Chapter M: Baird & Co

EXPLANATION OF TERMS.

The several classes of locomotives manufactured by the Baldwin Locomotive Works have their respective distinguishing names, which are derived and applied as follows:

All locomotives having one pair of driving-wheels
are designated as B engines.
Those having two pairs of drivers, as C engines.
Those having three pairs of drivers, as D engines.
Those having four pairs of drivers, as E engines.

One or more figures united with one of these letters, B, C, D, or E, and preceding it, indicates the dimensions of cylinders, boiler, and other parts, and also the general plan of the locomotive: thus, 27-1/2 C designates the class of eight-wheeled locomotives (illustrated on pages 56 and 60) with two pairs of drivers and a four-wheeled truck, and with cylinders sixteen inches in diameter and twenty-two or twenty-four inches stroke. 34 E designates another class (illustrated on page 80), with four pairs of drivers and a pony truck, and with cylinders twenty inches in diameter and twenty-four inches stroke.

In like manner all the other classes are designated by a combination of certain letters and figures.

All corresponding important parts of locomotives of the same class are made interchangeable and exact duplicates.

The following table gives a summary of the principal classes of locomotives of our manufacture:

GENERAL CLASSIFICATION.

----------------------------------------------------------------------------------------------
| | | | DRIVERS. |Truck. |Weight in|
Designation| SERVICE. | Gauge. |Cylinders.|-------------| No. |Working |
of Class. | | | |No.|Diameter.|Wheels.|Order. |
-----------+--------------------------+------------+----------+---+---------+-------+---------|
| | | | | INCHES. | | POUNDS. |
8-1/2 C | Narrow Gauge | | | | | | |
| Passenger and Freight. | 3 feet | 9 x 16 | 4 | 36 to 40| 2 | 25,000 |
| | and over. | | | | | |
9-1/2 C | do. | " | 10 x 16 | 4 | 36 to 40| 2 | 30,000 |
12 D | Narrow Gauge Freight. | " | 11 x 16 | 6 | 36 to 40| 2 | 35,000 |
14 D | do. | " | 12 x 16 | 6 | 36 to 40| 2 | 40,000 |
8 C | Tank Switching. |4 ft. 8-1/2 | 9 x 16 | 4 | 36 | .... | 25,000 |
| | and over | | | | | |
10-1/2 C | do. | " | 11 x 16 | 4 | 36 | .... | 38,000 |
11-1/2 C | do. | " | 11 x 16 | 4 | 36 | 2 | 40,000 |
12 C | do. | " | 12 x 22 | 4 | 44 | .... | 43,000 |
14 C | do. | " | 14 x 22 | 4 | 48 | .... | 48,000 |
14-1/2 C | do. | " | 14 x 22 | 4 | 48 | 2 | 50,000 |
18-1/2 C | do. | " | 15 x 22 | 4 | 48 to 54| .... | 55,000 |
15-1/2 C | do. | " | 15 x 22 | 4 | 48 to 54| 2 | 57,000 |
21 D | do. | " | 15 x 22 | 6 | 44 | .... | 60,000 |
27-1/2 D | do. | " | 16 x 22 | 6 | 44 to 48| .... | 66,000 |
8 C | Switching, | | | | | | |
| with separate Tender. | " | 9 x 16 | 4 | 36 | .... | 22,000 |
10-1/2 C | do. | " | 11 x 16 | 4 | 36 | .... | 34,000 |
11-1/2 C | do. | " | 11 x 16 | 4 | 36 | 2 | 36,000 |
12 C | do. | " | 12 x 22 | 4 | 44 | .... | 38,000 |
14 C | do. | " | 14 x 22 | 4 | 48 | .... | 42,000 |
14-1/2 C | do. | " | 14 x 22 | 4 | 48 | 2 | 44,000 |
18-1/2 C | do. | " | 15 x 22 | 4 | 48 to 54| .... | 49,000 |
15-1/2 C | do. | " | 15 x 22 | 4 | 48 to 54| 2 | 51,000 |
19-1/2 C | do. | " | 16 x 22 | 4 | 48 to 54| .... | 56,000 |
21 D | do. | " | 15 x 22 | 6 | 44 | .... | 52,000 |
27-1/2 D | do. | " | 16 x 22} | 6 | 44 to 48| .... | 60,000 |
| | | 24} | | | | |
25-1/2 D | do. | " | 17 x 22} | 6 | 48 to 54| .... | 66,000 |
| | | 24} | | | | |
15 C | Passenger and Freight. | " | 10 x 20 | 4 | 54 | 4 | 38,000 |
16-1/2 C | do. | " | 12 x 22 | 4 | 54 to 60| 4 | 44,000 |
20-1/2 C | do. | " | 13 x 22} | 4 | 56 to 66| 4 | 50,000 |
| | | 24} | | | | |
22-1/2 C | do. | " | 14 x 22} | 4 | 56 to 66| 4 | 55,000 |
| | | 24} | | | | |
24-1/2 C | do. | " | 15 x 22} | 4 | 56 to 66| 4 | 60,000 |
| | | 24} | | | | |
27-1/2 C | do. | " | 16 x 22} | 4 | 56 to 66| 4 | 65,000 |
| | | 24} | | | | |
28 | do. | " | 17 x 22} | 4 | 56 to 66| 4 | 70,000 |
| | | 24} | | | | |
24-1/2 D | Freight. | " | 16 x 22} | 6 | 48 to 54| 4 | 67,000 |
| | | 24} | | | | |
26-1/2 D | do. | " | 17 x 22} | 6 | 48 to 54| 4 | 72,000 |
| | | 24} | | | | |
28-1/2 D | do. | " | 18 x 22} | 6 | 48 to 54| 4 | 77,000 |
| | | 24} | | | | |
27-1/2 D | Freight and pushing. | " | 16 x 22} | 6 | 48 to 54| 2 | 66,000 |
| | | 24} | | | | |
25-1/2 D | do. | " | 17 x 22} | 6 | 48 to 54| 2 | 71,000 |
| | | 24} | | | | |
30 D | do. | " | 18 x 22} | 6 | 48 to 54| 2 | 76,000 |
| | | 24} | | | | |
34 E | Freight and Pushing. | " | 20 x 24 | 8 | 48 | 2 | 96,000 |
----------------------------------------------------------------------------------------------

PREFATORY.

The dimensions given in the following Catalogue are for locomotives of four feet eight and a half inches gauge, unless otherwise stated.

The _loads_ given under each class are invariably in gross tons of twenty-two hundred and forty pounds, and include both cars and lading.

All the locomotives described in this Catalogue are sold with the guarantee that they will haul, on a straight track in good condition, the loads stated. Their actual performance under favorable circumstances may be relied upon largely to exceed the figures given in the guarantee.

The feed-water for all locomotives specified is supplied by two pumps, or one pump and one injector. One or more injectors can also be supplied in addition to the two pumps, if desired.

DIVISION I.

ROAD LOCOMOTIVES FOR PASSENGER OR FREIGHT SERVICE.

CLASS 15 C.

General Design Illustrated by Print on Page 52.

CYLINDERS.

Diameter of cylinders 10 inches.
Length of stroke 20 "

DRIVING-WHEELS.

Diameter of drivers 54 inches.

TRUCK.

FOUR-WHEELED TRUCK, WITH CENTRE-BEARING BOLSTER.

Diameter of wheels 24 inches.

WHEEL-BASE.

Total wheel-base 16 ft. 3-3/4 inches.

TENDER.

ON FOUR WHEELS.

Capacity of tank 900 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 23,000 pounds.
On truck 15,000 "
------
Total weight of engine, about 38,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 550 gross tons.
" 20 ft. grade 250 " "
" 40 " 160 " "
" 60 " 115 " "
" 80 " 85 " "
" 100 " 65 " "

DIVISION I.

ROAD LOCOMOTIVES FOR PASSENGER OR FREIGHT SERVICE.

CLASS 16-1/2 C.

General Design Illustrated by Print on Page 52.

CYLINDERS.

Diameter of cylinders 12 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 54 to 60 inches.

TRUCK.

FOUR-WHEELED TRUCK, WITH CENTRE-BEARING BOLSTER.

Diameter of wheels 24 to 26 inches.

WHEEL-BASE.

Total wheel-base 19 ft. 1 inch.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1200 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 28,000 pounds.
On truck 16,000 "
------
Total weight of engine, about 44,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 665 gross tons.
" 20 ft. grade 305 " "
" 40 " 190 " "
" 60 " 135 " "
" 80 " 100 " "
" 100 " 75 " "

DIVISION I.

ROAD LOCOMOTIVES FOR PASSENGER OR FREIGHT SERVICE.

CLASS 20-1/2 C

General Design Illustrated by Prints on Pages 52 and 56.

CYLINDERS.

Diameter of cylinders 13 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

Diameter of drivers 56 to 66 inches.

TRUCK.

FOUR-WHEELED CENTRE-BEARING TRUCK, WITH SWING BOLSTER.

Diameter of wheels 24 to 30 inches.

WHEEL-BASE.

Total wheel-base 20 ft. 1-3/4 inches.
Rigid " (distance between driving-wheel-centres) 6 ft. 6 inches.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1400 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 30,000 pounds.
On truck 20,000 "
------
Total weight of engine, about 50,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 710 gross tons.
" 20 ft. grade 325 " "
" 40 " 200 " "
" 60 " 140 " "
" 80 " 105 " "
" 100 " 80 " "

DIVISION I.

ROAD LOCOMOTIVES FOR PASSENGER OR FREIGHT SERVICE.

CLASS 22-1/2 C.

General Design Illustrated by Prints on Pages 52 and 56.

CYLINDERS.

Diameter of cylinders 14 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

Diameter of drivers 56 to 66 inches.

TRUCK.

FOUR-WHEELED CENTRE-BEARING TRUCK, WITH SWING BOLSTER.

Diameter of wheels 24 to 30 inches.

WHEEL-BASE.

Total wheel-base 20 ft. 7-3/4 inches.
Rigid " (distance between driving-wheel-centres) 7 ft.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 35,000 pounds.
On truck 20,000 "
------
Total weight of engine, about 55,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 835 gross tons.
" 20 ft. grade 380 " "
" 40 " 240 " "
" 60 " 170 " "
" 80 " 125 " "
" 100 " 100 " "

DIVISION I.

ROAD LOCOMOTIVES FOR PASSENGER OR FREIGHT SERVICE.

CLASS 24-1/2 C

General Design Illustrated by Prints on Pages 56 and 60.

CYLINDERS.

Diameter of cylinders 15 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

Diameter of drivers 56 to 66 inches.

TRUCK.

FOUR-WHEELED CENTRE-BEARING TRUCK, WITH SWING BOLSTER.

Diameter of wheels 24 to 30 inches.

WHEEL-BASE.

Total wheel-base 21 ft. 3 inches.
Rigid " (distance between driving-wheel-centres) 7 ft. 8 inches.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1800 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 39,000 pounds.
On truck 21,000 "
------
Total weight of engine, about 60,000 "

LOAD.

IN ADDITION TO WEIGHT OF ENGINE AND TENDER.

On a level 930 gross tons.
" 20 ft. grade 430 " "
" 40 " 270 " "
" 60 " 190 " "
" 80 " 140 " "
"100 " 110 " "

DIVISION I.

ROAD LOCOMOTIVES FOR PASSENGER OR FREIGHT SERVICE.

CLASS 27-1/2 C.

General Design Illustrated by Prints on Pages 56 and 60.

CYLINDERS.

Diameter of cylinders 16 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

Diameter of drivers 56 to 66 inches.

TRUCK.

FOUR-WHEELED CENTRE-BEARING TRUCK, WITH SWING BOLSTER.

Diameter of wheels 24 to 30 inches.

WHEEL-BASE.

Total wheel-base 21 ft. 9 inches.
Rigid " (distance between driving-wheel-centres) 8 ft.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 2000 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 42,000 pounds.
On truck 23,000 "
------
Total weight of engine, about 65,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1000 gross tons.
" 20 ft. grade 460 " "
" 40 " 290 " "
" 60 " 205 " "
" 80 " 150 " "
" 100 " 120 " "

The distance between centres of drivers (rigid wheel-base) can be made 8 ft. 6 in., if preferred to 8 ft. as given above. This greater spread of wheels, throwing more weight on the drivers, gives the engine greater adhesion, and thus adds to its efficiency for freight service. Owing to the peculiar construction of the truck, the engine is found to pass short curves without difficulty, even with this greater distance between driving-wheel-centres.

DIVISION I.

ROAD LOCOMOTIVES FOR PASSENGER OR FREIGHT SERVICE.

CLASS 28 C.

General Design Illustrated by Prints on Pages 56, 60, and 64.

CYLINDERS.

Diameter of cylinders 17 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

Diameter of drivers 56 to 66 inches.

TRUCK.

FOUR-WHEELED CENTRE-BEARING TRUCK, WITH SWING BOLSTER.

Diameter of wheels 24 to 30 inches.

WHEEL-BASE.

Total wheel-base 22 ft. 6-1/4 inches.
Rigid " (distance between driving-wheel-centres) 8 ft.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 2200 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 45,000 pounds.
On truck 25,000 "
------
Total weight of engine, about 70,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1075 gross tons.
" 20 ft. grade 495 " "
" 40 " 310 " "
" 60 " 220 " "
" 80 " 165 " "
" 100 " 130 " "

The distance between centres of drivers (rigid wheel-base) can be made 8 ft. 6 in., if preferred to 8 ft. as given above. This greater spread of wheels, throwing more weight on the drivers, gives the engine greater adhesion, and thus adds to its efficiency for freight service. Owing to the peculiar construction of the truck, the engine is found to pass short curves without difficulty, even with this greater distance between driving-wheel-centres.

ADDENDA.

ADAPTATION FOR EITHER PASSENGER OR FREIGHT SERVICE.

The five preceding classes, embracing road locomotives with cylinders from thirteen to seventeen inches in diameter, admit of construction with either a twenty-two or a twenty-four inches stroke, and with driving-wheels of any diameter from fifty-six to sixty-six inches. Each class can, therefore, be adapted to either passenger or freight service, by giving the shorter stroke and the larger wheel for the former use, and the longer stroke and smaller wheel for the latter. The same cylinder pattern is used for both the twenty-two and the twenty-four inches stroke, the difference in length being made by recessing the cylinder heads.

ANTHRACITE COAL BURNERS.

The illustrations and figures given for engines in this Division are all for soft coal or wood burners. For anthracite coal the form of the furnace is changed, giving a longer grate and shallower fire-box. The barrel of boiler, length of connecting-rods, number and length of flues, etc., remain the same, so that no change in principal patterns results. The change in shape and dimensions of fire-box, however, alters the distribution of weight, throwing more load on the drivers and less on the truck, while the total weight of engine remains nearly the same. The hard coal burners, accordingly, having from this cause somewhat more adhesion than the soft coal burners of the same class, have proportionately more tractive power, and will haul loads from ten to fifteen per cent. greater than those given for the corresponding soft coal or wood burning engines.

STRAIGHT AND WAGON-TOP BOILERS.

All the engines of this division are built with wagon-top boilers or with straight boilers and two domes, as preferred. Where the latter form is made, the throttle-valve is placed in the forward dome. The wagon-top and straight boilers for the same class are so proportioned as to give equal steam space and the same number of flues in both forms of construction.

DIVISION II.

TEN-WHEELED FREIGHT LOCOMOTIVES.

CLASS 24-1/2 D.

General Design Illustrated by Print on Page 68.

CYLINDERS.

Diameter of cylinders 16 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

REAR AND FRONT PAIRS WITH FLANGED TIRES 5-1/2 INCHES WIDE. MAIN PAIR WITH PLAIN TIRES 6 INCHES WIDE.

Diameter of drivers 48 to 54 inches.

TRUCK.

FOUR-WHEELED CENTRE-BEARING TRUCK, WITH SWING BOLSTER.

Diameter of wheels 24 to 26 inches.

WHEEL-BASE.

Total wheel-base 23 feet.
Rigid " (distance between centres of rear and
front drivers) 12 ft. 1 inch.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 51,000 pounds.
On truck 16,000 "
------
Total weight of engine, about 67,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1230 gross tons
" 20 ft. grade 570 " "
" 40 " 360 " "
" 60 " 260 " "
" 80 " 195 " "
" 100 " 155 " "

DIVISION II.

TEN-WHEELED FREIGHT LOCOMOTIVES.

CLASS 26-1/2 D.

General Design Illustrated by Print on Page 68.

CYLINDERS.

Diameter of cylinders 17 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

REAR AND FRONT PAIRS WITH FLANGED TIRES 5-1/2 INCHES WIDE. MAIN PAIR WITH PLAIN TIRES 6 INCHES WIDE.

Diameter of drivers 48 to 54 inches.

TRUCK.

FOUR-WHEELED CENTRE-BEARING TRUCK, WITH SWING BOLSTER.

Diameter of wheels 24 to 26 inches.

WHEEL-BASE.

Total wheel-base 23 ft. 2-3/4 inches.
Rigid " (distance between centres of rear and
front drivers) 12 ft. 8 inches.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1800 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 54,000 pounds.
On truck 18,000 "
------
Total weight of engine, about 72,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1300 gross tons.
" 20 ft. grade 600 " "
" 40 " 380 " "
" 60 " 270 " "
" 80 " 205 " "
" 100 " 160 " "

DIVISION II.

TEN-WHEELED FREIGHT LOCOMOTIVES.

CLASS 28-1/2 D.

General Design Illustrated by Print on Page 68.

CYLINDERS.

Diameter of cylinders 18 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

REAR AND FRONT PAIRS WITH FLANGED TIRES 5-1/2 INCHES WIDE. MAIN PAIR WITH PLAIN TIRES 6 INCHES WIDE.

Diameter of drivers 48 to 54 inches.

TRUCK.

FOUR-WHEELED CENTRE-BEARING TRUCK, WITH SWING BOLSTER.

Diameter of wheels 24 to 26 inches.

WHEEL-BASE.

Total wheel-base 23 ft. 2-3/4 inches.
Rigid " (distance between centres of rear and
front drivers) 12 ft. 8 inches.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 2000 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 58,000 pounds.
On truck 19,000 "
------
Total weight of engine, about 77,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1400 gross tons.
" 20 ft. grade 645 " "
" 40 " 410 " "
" 60 " 290 " "
" 80 " 220 " "
" 100 " 175 " "

ADDENDA.

HARD AND SOFT COAL BURNERS

In the three classes of engines of Division II. certain differences occur between hard and soft coal burners. The print on page 68 illustrates the plan of the soft coal or wood burner. In the hard coal burner the fire-box is made longer and shallower; the rear drivers are brought farther forward, and the three pairs of drivers are arranged so that the distance between centres of rear and main drivers is the same as the distance between centres of main and front drivers. The point of suspension of the back part of the engine being thus brought forward, a greater proportion of the total weight is carried on the drivers and rendered available for adhesion, and the tractive power of the hard coal burner is accordingly somewhat greater than that of the soft coal engine. The rigid wheel-base of the hard coal burner is also lessened from 17 to 24 inches by the same modification.

CURVING.

All engines of this Division are built with a swing-bolster truck. The middle pair of drivers have tires without flanges. The engine is accordingly guided on the rails by the truck and the flanges of the front driving-wheels, and is found to pass curves without difficulty.

If preferred, however, the front instead of the main pair of drivers can have the plain tires. Both methods are in use.

STRAIGHT AND WAGON-TOP BOILERS.

All the engines of this Division are built with wagon-top boilers or with straight boilers and two domes, as preferred. Where the latter form is made, the throttle-valve is placed in the forward dome. The wagon-top and straight boilers for the same class are so proportioned as to give equal steam space and the same number of flues in both forms of construction.

DIVISION III.

FREIGHT OR PUSHING ENGINES.--"MOGUL" PATTERN.

CLASS 27-1/2 D.

General Design Illustrated by Print on Page 74.

CYLINDERS.

Diameter of cylinders 16 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

REAR AND FRONT PAIRS WITH FLANGED TIRES 5-1/2 INCHES WIDE. MAIN PAIR WITH PLAIN TIRES 6 INCHES WIDE.

Diameter of drivers 48 to 54 inches.

TRUCK.

ONE PAIR OF LEADING WHEELS, WITH SWING BOLSTER AND RADIUS-BAR, EQUALIZED WITH FRONT DRIVERS.

Diameter of wheels 30 inches.

WHEEL-BASE.

Total wheel-base 21 ft. 4 inches.
Rigid " (distance between centres of rear and
front drivers) 14 ft.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 57,000 pounds.
On leading wheels 9,000 "
------
Total weight of engine, about 66,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1400 gross tons.
" 20 ft. grade 655 " "
" 40 " 415 " "
" 60 " 300 " "
" 80 " 230 " "
" 100 " 180 " "

DIVISION III.

FREIGHT OR PUSHING ENGINES--"MOGUL" PATTERN.

CLASS 25-1/2 D.

General Design Illustrated by Print on Page 74.

CYLINDERS.

Diameter of cylinders 17 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

REAR AND FRONT PAIRS WITH FLANGED TIRES 5-1/2 INCHES WIDE. MAIN PAIR WITH PLAIN TIRES 6 INCHES WIDE.

Diameter of drivers 48 to 54 inches.

TRUCK.

ONE PAIR OF LEADING WHEELS, WITH SWING BOLSTER AND RADIUS-BAR, EQUALIZED WITH FRONT DRIVERS.

Diameter of wheels 30 inches.

WHEEL-BASE.

Total wheel-base 21 ft. 10 inches.
Rigid " (distance between centres of rear and
front drivers) 14 ft. 6 inches.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1800 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 62,000 pounds.
On leading wheels 9,000 "
------
Total weight of engine, about 71,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1500 gross tons.
" 20 ft. grade 695 " "
" 40 " 445 " "
" 60 " 320 " "
" 80 " 245 " "
" 100 " 195 " "

DIVISION III.

FREIGHT OR PUSHING ENGINES--"MOGUL" PATTERN.

CLASS 30 D.

General Design Illustrated by Print on Page 74.

CYLINDERS.

Diameter of cylinders 18 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

REAR AND FRONT PAIRS WITH FLANGED TIRES 5-1/2 INCHES WIDE. MAIN PAIR WITH PLAIN TIRES 6 INCHES WIDE.

Diameter of drivers 48 to 54 inches.

TRUCK.

ONE PAIR OF LEADING WHEELS, WITH SWING BOLSTER AND RADIUS-BAR, EQUALIZED WITH FRONT DRIVERS.

Diameter of wheels 30 inches.

WHEEL-BASE.

Total wheel-base 22 ft. 5 inches.
Rigid " (distance between centres of rear and
front drivers) 15 ft.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 2000 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 66,000 pounds.
On leading wheels 10,000 "
------
Total weight of engine, about 76,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1600 gross tons.
" 20 ft. grade 740 " "
" 40 " 470 " "
" 60 " 340 " "
" 80 " 260 " "
" 100 " 205 " "

ADDENDA.

ANTHRACITE COAL BURNERS.

For anthracite coal, a long and shallow fire-box is constructed, and the back driving-wheels are placed at the same distance from the main pair as the latter are from the front drivers. This reduces the rigid wheel-base to some extent, but retains the same weight on drivers.

CURVING.

The leading wheels having a swing bolster, and the middle pair of drivers having no flanges, the engine is guided by the truck and the front drivers, and is found to pass short curves without difficulty.

TRACTIVE POWER.

It will be seen that in engines of this pattern nearly all the weight of the machine is utilized for adhesion, only enough load being thrown on the leading wheels to steady the engine on the track. The tractive power of these engines is accordingly greater in comparison with their total weight than that of either the eight-wheeled C or the ten-wheeled D patterns, and they are, therefore, especially suited to working steep grades and hauling heavy loads at low speeds.

STRAIGHT AND WAGON-TOP BOILERS.

All the engines of this Division are built with wagon-top boilers or with straight boilers and two domes, as preferred. Where the latter form is made, the throttle-valve is placed in the forward dome. The wagon-top and straight boilers for the same class are so proportioned as to give equal steam space and the same number of flues in both forms of construction.

DIVISION IV.

FREIGHT OR PUSHING ENGINES.--"CONSOLIDATION" PATTERN.

CLASS 34 E.

Illustrated by Print on Page 80.

CYLINDERS.

Diameter of cylinders 20 inches.
Length of stroke 24 inches.

DRIVING-WHEELS.

REAR AND SECOND PAIRS WITH FLANGED TIRES 5-1/2 INCHES WIDE. FRONT AND MAIN PAIRS WITH PLAIN TIRES 6 INCHES WIDE.

Diameter of drivers 48 inches.

TRUCK.

ONE PAIR OF LEADING WHEELS, WITH SWING BOLSTER AND RADIUS-BAR, EQUALIZED WITH FRONT DRIVERS.

Diameter of wheels 30 inches.

WHEEL-BASE.

Total wheel-base 21 ft. 10 inches.
Rigid " (distance between rear and second pair of
drivers) 9 ft. 10 inches.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 2400 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 87,000 pounds.
On leading wheels 9,000 "
------
Total weight of engine, about 96,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 2000 gross tons.
" 20 ft. grade 990 " "
" 40 " 635 " "
" 60 " 460 " "
" 80 " 355 " "
" 100 " 285 " "

ADDENDA.

GENERAL DESIGN.

The plan of this engine admits of either straight or wagon-top boiler, and of the use, with the proper form of grate, of either anthracite or bituminous coal or of wood.

WHEEL-BASE.

The arrangement of the wheels is such as to permit the engine to traverse curves with nearly as much facility as an engine of the ordinary type with only four drivers. The leading wheels having a swing bolster, and the front and main drivers having no flanges, the engine is guided on the rails by the leading wheels and by the flanges of the rear and second pairs of drivers. It is, therefore, impossible for the wheels to bind on the rails. Engines of this class are run around curves of 400 feet radius and less.

TRACTIVE POWER.

The distribution of the total weight of the engine gives about twenty-two thousand pounds for each pair of drivers,--a weight no greater than is carried on each pair of drivers of the larger sizes of ordinary eight-wheeled C engines. The single pair of leading wheels carries only nine thousand pounds. This arrangement renders available for adhesion a total weight of 87,000 pounds. One of these engines on a recent trial hauled one hundred and fifty gross tons of cars and load up a grade of one hundred and forty-five feet with sharp curves, and two hundred and sixty-eight gross tons of cars and load up a grade of one hundred and sixteen feet to the mile. The pressure in the first case was one hundred and ten pounds, and the speed six minutes to the mile; in the second case, the pressure was one hundred and twenty pounds, and the speed seven and one-half minutes to the mile.

These engines are especially adapted to the working of steep gradients or where heavy loads are to be moved.

DIVISION V.

SWITCHING ENGINES WITH SEPARATE TENDERS.

CLASS 8 C.

General Design Illustrated by Print on Page 84.

CYLINDERS.

Diameter of cylinders 9 inches.
Length of stroke 16 "

DRIVING-WHEELS.

Diameter of drivers 36 inches.
Distance between centres 6 feet.

TENDER.

ON FOUR WHEELS, 30 INCHES IN DIAMETER.

Capacity of tank 750 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 22,000 pounds.

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 530 gross tons.
" 20 ft. grade 245 " "
" 40 " 155 " "
" 60 " 110 " "
" 80 " 85 " "
" 100 " 70 " "

DIVISION V.

SWITCHING ENGINES WITH SEPARATE TENDERS.

CLASS 10-1/2 C.

General Design Illustrated by Print on Page 84.

CYLINDERS.

Diameter of cylinders 11 inches.
Length of stroke 16 "

DRIVING-WHEELS.

Diameter of drivers 36 inches.
Distance between centres 6 feet.

TENDER.

ON FOUR WHEELS, 30 INCHES IN DIAMETER.

Capacity of tank 750 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 34,000 pounds.

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 825 gross tons.
" 20 ft. grade 385 " "
" 40 " 250 " "
" 60 " 180 " "
" 80 " 140 " "
" 100 " 110 " "

DIVISION V.

SWITCHING ENGINES WITH SEPARATE TENDERS.

CLASS 12 C.

General Design Illustrated by Print on Page 88.

CYLINDERS.

Diameter of cylinders 12 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 44 inches.
Distance between centres 7 feet.

TENDER.

ON FOUR, SIX, OR EIGHT WHEELS, 30 INCHES IN DIAMETER.

Capacity of tank 900 to 1400 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 38,000 pounds.

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 925 gross tons.
" 20 ft. grade 435 " "
" 40 " 280 " "
" 60 " 200 " "
" 80 " 155 " "
" 100 " 125 " "

DIVISION V.

SWITCHING ENGINES WITH SEPARATE TENDERS.

CLASS 14 C.

General Design Illustrated by Print on Page 88.

CYLINDERS.

Diameter of cylinders 14 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 48 inches.
Distance between centres 7 feet.

TENDER.

ON FOUR, SIX, OR EIGHT WHEELS, 30 INCHES IN DIAMETER.

Capacity of tank 900 to 1400 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 42,000 pounds.

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1020 gross tons.
" 20 ft. grade 480 " "
" 40 " 305 " "
" 60 " 225 " "
" 80 " 170 " "
" 100 " 135 " "

DIVISION V.

SWITCHING ENGINES WITH SEPARATE TENDERS.

CLASS 18-1/2 C.

General Design Illustrated by Print on Page 88.

CYLINDERS.

Diameter of cylinders 15 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 48 to 54 inches.
Distance between centres 7 feet.

TENDER.

ON EIGHT WHEELS, 30 INCHES IN DIAMETER.

Capacity of tank 1600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 49,000 pounds.

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1200 gross tons.
" 20 ft. grade 560 " "
" 40 " 360 " "
" 60 " 260 " "
" 80 " 200 " "
" 100 " 160 " "

DIVISION V.

SWITCHING ENGINES WITH SEPARATE TENDERS.

CLASS 19-1/2 C.

General Design Illustrated by Print on Page 88.

CYLINDERS.

Diameter of cylinders 16 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 48 to 54 inches.

WHEEL-BASE.

Total wheel-base 7 ft. 6 inches
Rigid " 7 ft. 6 inches

TENDER.

ON EIGHT WHEELS, 30 INCHES IN DIAMETER.

Capacity of tank 1600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 56,000 pounds.

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1360 gross tons.
" 20 ft. grade 640 " "
" 40 " 410 " "
" 60 " 300 " "
" 80 " 230 " "
" 100 " 180 " "

DIVISION V.

SWITCHING ENGINES WITH SEPARATE TENDERS.

CLASS 11-1/2 C

General Design Illustrated by Print on Page 94.

CYLINDERS.

Diameter of cylinders 11 inches.
Length of stroke 16 "

DRIVING-WHEELS.

Diameter of drivers 36 inches.

TRUCK.

TWO-WHEELED, WITH SWING BOLSTER AND RADIUS-BAR.

Diameter of wheels 24 inches.

WHEEL-BASE.

Total wheel-base 11 ft. 3 inches.
Rigid " 4 ft. 8 inches.

TENDER.

ON FOUR WHEELS, 30 INCHES IN DIAMETER.

Capacity of tank 750 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 30,000 pounds.
On truck 5,000 "
------
Total weight of engine, about 35,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 725 gross tons.
" 20 ft. grade 335 " "
" 40 " 215 " "
" 60 " 155 " "
" 80 " 120 " "
" 100 " 95 " "

DIVISION V.

SWITCHING ENGINES WITH SEPARATE TENDERS.

CLASS 14-1/2 C.

General Design Illustrated by Print on Page 94.

CYLINDERS.

Diameter of cylinders 14 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 48 inches.

TRUCK.

TWO-WHEELED, WITH SWING BOLSTER AND RADIUS-BAR.

Diameter of wheels 24 inches.

WHEEL-BASE.

Total wheel-base 13 ft. 8-1/2 inches.
Rigid " 6 ft. 6 inches.

TENDER.

ON FOUR WHEELS, OR TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1200 to 1600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 38,000 pounds.
On truck 6,000 "
------
Total weight of engine, about 44,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 865 gross tons.
" 20 ft. grade 400 " "
" 40 " 255 " "
" 60 " 180 " "
" 80 " 140 " "
" 100 " 110 " "

DIVISION V.

SWITCHING ENGINES WITH SEPARATE TENDERS.

CLASS 15-1/2 C.

General Design Illustrated by Print on Page 94.

CYLINDERS.

Diameter of cylinders 15 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 48 to 54 inches.

TRUCK.

TWO-WHEELED, WITH SWING BOLSTER AND RADIUS-BAR.

Diameter of wheels 24 inches.

WHEEL-BASE.

Total wheel-base 14 ft. 9 inches.
Rigid " (distance between driving-wheel centres) 7 ft.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 44,000 pounds.
On truck 6,000 "
------
Total weight of engine, about 50,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1060 gross tons.
" 20 ft. grade 495 " "
" 40 " 315 " "
" 60 " 230 " "
" 80 " 170 " "
" 100 " 135 " "

DIVISION V.

SWITCHING ENGINES WITH SEPARATE TENDERS.

CLASS 21 D.

General Design Illustrated by Print on Page 100.

CYLINDERS.

Diameter of cylinders 15 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 44 inches.

WHEEL-BASE.

Total wheel-base 9 ft. 9 inches.
Rigid " 9 ft. 9 inches.

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 52,000 pounds.

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1260 gross tons.
" 20 ft. grade 590 " "
" 40 " 375 " "
" 60 " 270 " "
" 80 " 210 " "
" 100 " 165 " "

DIVISION V.

SWITCHING ENGINES WITH SEPARATE TENDERS.

CLASS 27-1/2 D.

General Design Illustrated by Print on Page 100.

CYLINDERS.

Diameter of cylinders 16 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

Diameter of drivers 44 to 48 inches.

WHEEL-BASE.

Total wheel-base 10 feet.
Rigid " 10 "

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 60,000 pounds.

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1460 gross tons.
" 20 ft. grade 685 " "
" 40 " 440 " "
" 60 " 320 " "
" 80 " 245 " "
" 100 " 200 " "

DIVISION V.

SWITCHING ENGINES WITH SEPARATE TENDERS.

CLASS 25-1/2 D.

General Design Illustrated by Print on Page 100.

CYLINDERS.

Diameter of cylinders 17 inches.
Length of stroke 22 or 24 inches.

DRIVING-WHEELS.

Diameter of drivers 48 inches.

WHEEL-BASE.

Total wheel-base 10 feet.
Rigid " 10 "

TENDER.

ON TWO FOUR-WHEELED TRUCKS.

Capacity of tank 1800 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 66,000 pounds.

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 1600 gross tons.
" 20 ft. grade 755 " "
" 40 " 485 " "
" 60 " 350 " "
" 80 " 270 " "
" 100 " 215 " "

DIVISION VI.

TANK SWITCHING ENGINES.

CLASS 8 C.

General Design Illustrated by Print on Page 106.

CYLINDERS.

Diameter of cylinders 9 inches.
Length of stroke 16 "

DRIVING-WHEELS.

Diameter of drivers 36 inches.

WHEEL-BASE.

Total wheel-base 6 ft. 6 inches.
Rigid " 6 ft. 6 inches.

TANK.

Capacity 250 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 25,000 pounds.

LOAD.

IN ADDITION TO WEIGHT OF ENGINE.

On a level 565 gross tons.
" 20 ft. grade 265 " "
" 40 " 170 " "
" 60 " 125 " "
" 80 " 100 " "
" 100 " 80 " "

DIVISION VI.

TANK SWITCHING ENGINES.

CLASS 10-1/2 C.

General Design Illustrated by Print on Page 106.

CYLINDERS

Diameter of cylinders 11 inches.
Length of stroke 16 "

DRIVING-WHEELS.

Diameter of drivers 36 inches.

WHEEL-BASE.

Total wheel-base 6 ft. 6 inches.
Rigid " 6 ft. 6 inches.

TANK.

Capacity 400 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 38,000 pounds.

LOAD.

IN ADDITION TO WEIGHT OF ENGINE.

On a level 855 gross tons.
" 20 ft. grade 405 " "
" 40 " 265 " "
" 60 " 195 " "
" 80 " 150 " "
" 100 " 120 " "

DIVISION VI.

TANK SWITCHING ENGINES.

CLASS 12 C.

General Design Illustrated by Print on Page 106.

CYLINDERS.

Diameter of cylinders 12 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 44 inches.

WHEEL-BASE.

Total wheel-base 7 feet.
Rigid " 7 "

TANK.

Capacity 500 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 43,000 pounds.

LOAD.

IN ADDITION TO WEIGHT OF ENGINE.

On a level 960 gross tons.
" 20 ft. grade 455 " "
" 40 " 295 " "
" 60 " 215 " "
" 80 " 170 " "
" 100 " 135 " "

DIVISION VI.

TANK SWITCHING ENGINES.

CLASS 14 C.

General Design Illustrated by Print on Page 106.

CYLINDERS.

Diameter of cylinders 14 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 48 inches.

WHEEL-BASE.

Total wheel-base 7 feet.
Rigid " 7 "

TANK.

Capacity 600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 49,000 pounds.

LOAD.

IN ADDITION TO WEIGHT OF ENGINE.

On a level 1100 gross tons.
" 20 ft. grade 525 " "
" 40 " 340 " "
" 60 " 250 " "
" 80 " 195 " "
" 100 " 155 " "

DIVISION VI.

TANK SWITCHING ENGINES.

CLASS 18-1/2 C.

General Design Illustrated by Print on Page 106.

CYLINDERS.

Diameter of cylinders 15 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 48 inches.

WHEEL-BASE.

Total wheel-base 7 feet.
Rigid " 7 "

TANK.

Capacity 700 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 56,000 pounds.

LOAD.

IN ADDITION TO WEIGHT OF ENGINE.

On a level 1230 gross tons.
" 20 ft. grade 585 " "
" 40 " 380 " "
" 60 " 280 " "
" 80 " 215 " "
" 100 " 175 " "

DIVISION VI.

TANK SWITCHING ENGINES.

CLASS 11-1/2 C.

General Design Illustrated by Print on Page 114.

CYLINDERS.

Diameter of cylinders 11 inches.
Length of stroke 16 "

DRIVING-WHEELS.

Diameter of drivers 36 inches.

TRUCK.

TWO-WHEELED, WITH SWING BOLSTER AND RADIUS-BAR.

Diameter of wheels 24 inches.

WHEEL-BASE.

Total wheel-base 11 ft. 3 inches.
Rigid " 4 ft. 8 inches.

TANK.

Capacity 400 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 35,000 pounds.
On truck 5,000 "
------
Total weight of engine, about 40,000 "

LOAD.

IN ADDITION TO WEIGHT OF ENGINE.

On a level 785 gross tons.
" 20 ft. grade 370 " "
" 40 " 240 " "
" 60 " 175 " "
" 80 " 135 " "
" 100 " 110 " "

DIVISION VI.

TANK SWITCHING ENGINES.

CLASS 14-1/2 C.

General Design Illustrated by Print on Page 114.

CYLINDERS.

Diameter of cylinders 14 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 48 inches.

TRUCK.

TWO-WHEELED, WITH SWING BOLSTER AND RADIUS-BAR.

Diameter of wheels 24 inches.

WHEEL-BASE.

Total wheel-base 13 ft. 8-1/2 inches.
Rigid " 6 ft. 6 inches.

TANK.

Capacity 600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 44,000 pounds.
On truck 6,000 "
------
Total weight of engine, about 50,000 "

LOAD.

IN ADDITION TO WEIGHT OF ENGINE.

On a level 980 gross tons.
" 20 ft. grade 465 " "
" 40 " 300 " "
" 60 " 220 " "
" 80 " 170 " "
" 100 " 140 " "

DIVISION VI.

TANK SWITCHING ENGINES.

CLASS 15-1/2 C.

General Design Illustrated by Print on Page 114.

CYLINDERS.

Diameter of cylinders 15 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 48 to 54 inches.

TRUCK.

TWO-WHEELED, WITH SWING BOLSTER AND RADIUS-BAR.

Diameter of wheels 24 inches.

WHEEL-BASE.

Total wheel-base 14 ft. 7-1/2 inches.
Rigid " 7 ft.

TANK.

Capacity 700 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 50,000 pounds.
On truck 6,000 "
------
Total weight of engine, about 56,000 "

LOAD.

IN ADDITION TO WEIGHT OF ENGINE.

On a level 1120 gross tons.
" 20 ft. grade 535 " "
" 40 " 345 " "
" 60 " 255 " "
" 80 " 195 " "
" 100 " 160 " "

DIVISION VI.

TANK SWITCHING ENGINES.

CLASS 21 D.

General Design Illustrated by Print on Page 120.

CYLINDERS.

Diameter of cylinders 15 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 44 inches.

WHEEL-BASE.

Total wheel-base 9 ft. 9 inches.
Rigid " 9 ft. 9 inches.

TANK.

Capacity 750 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 60,000 pounds.

LOAD.

IN ADDITION TO WEIGHT OF ENGINE.

On a level 1375 gross tons.
" 20 ft. grade 650 " "
" 40 " 420 " "
" 60 " 310 " "
" 80 " 240 " "
" 100 " 195 " "

DIVISION VI.

TANK SWITCHING ENGINES.

CLASS 27-1/2 D.

General Design Illustrated by Print on Page 120.

CYLINDERS.

Diameter of cylinders 16 inches.
Length of stroke 22 "

DRIVING-WHEELS.

Diameter of drivers 44 to 48 inches.

WHEEL-BASE.

Total wheel-base 10 feet.
Rigid " 10 "

TANK.

Capacity 900 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

Total weight of engine, about 66,000 pounds.

LOAD.

IN ADDITION TO WEIGHT OF ENGINE.

On a level 1470 gross tons.
" 20 ft. grade 700 " "
" 40 " 455 " "
" 60 " 335 " "
" 80 " 260 " "
" 100 " 210 " "

DIVISION VII.

NARROW-GAUGE PASSENGER AND FREIGHT LOCOMOTIVES.

CLASS 8-1/2 C.

General Design Illustrated by Print on Page 124.

CYLINDERS.

Diameter of cylinders 9 inches.
Length of stroke 16 "

DRIVING-WHEELS.

Diameter of drivers 36 to 40 inches.

TRUCK.

TWO-WHEELED, WITH SWING BOLSTER AND RADIUS-BAR.

Diameter of wheels 24 inches.

WHEEL-BASE.

Total wheel-base 11 ft 11-1/2 inches.
Rigid " 6 ft. 3 inches.

TENDER.

ON FOUR OR SIX WHEELS.

Capacity of tank 500 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 20,000 pounds.
On truck 5,000 "
------
Total weight of engine, about 25,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 480 gross tons.
" 20 ft. grade 225 " "
" 40 " 140 " "
" 60 " 105 " "
" 80 " 75 " "
" 100 " 60 " "

Engines of this class can be adapted to a gauge of 3 feet or upward.

DIVISION VII.

NARROW-GAUGE PASSENGER AND FREIGHT LOCOMOTIVES.

CLASS 9-1/2 C.

General Design Illustrated by Print on Page 124.

CYLINDERS.

Diameter of cylinders 10 inches.
Length of stroke 16 "

DRIVING-WHEELS.

Diameter of drivers 36 to 40 inches.

TRUCK.

TWO-WHEELED-WITH SWING BOLSTER AND RADIUS-BAR.

Diameter of wheels 24 inches.

WHEEL-BASE.

Total wheel-base 12 ft. 4-1/2 inches.
Rigid " 6 ft. 6 inches.

TENDER.

ON FOUR OR SIX WHEELS.

Capacity of tank 600 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 25,000 pounds.
On pony truck 5,000 "
------
Total weight of engine, about 30,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 605 gross tons.
" 20 ft. grade 285 " "
" 40 " 175 " "
" 60 " 125 " "
" 80 " 95 " "
" 100 " 75 " "

Engines of this class can be adapted to a gauge of 3 feet or upward.

DIVISION VIII.

NARROW-GAUGE FREIGHT LOCOMOTIVES.

CLASS 12 D.

General Design Illustrated by Print on Page 128.

CYLINDERS.

Diameter of cylinders 11 inches.
Length of stroke 16 "

DRIVING-WHEELS.

Diameter of drivers 36 inches.

TRUCK.

TWO-WHEELED, WITH SWING BOLSTER AND RADIUS-BAR.

Diameter of wheels 24 inches.

WHEEL-BASE.

Total wheel-base 14 ft. 3 inches.
Rigid " 8 ft. 7 inches.

TENDER.

ON FOUR OR SIX WHEELS.

Capacity of tank 750 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 31,000 pounds.
On truck 4,000 "
------
Total weight of engine, about 35,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 730 gross tons.
" 20 ft. grade 340 " "
" 40 " 220 " "
" 60 " 160 " "
" 80 " 120 " "
" 100 " 100 " "

Engines of this class can be adapted to a gauge of 3 feet or upward.

DIVISION VIII.

NARROW-GAUGE FREIGHT LOCOMOTIVES.

CLASS 14 D.

General Design Illustrated by Print on Page 128.

CYLINDERS.

Diameter of cylinders 12 inches.
Length of stroke 16 "

DRIVING-WHEELS.

Diameter of drivers 36 to 40 inches.

TRUCK.

TWO-WHEELED, WITH SWING BOLSTER AND RADIUS-BAR.

Diameter of wheels 24 inches.

WHEEL-BASE.

Total wheel-base 15 ft. 4 inches.
Rigid " 9 ft. 4 inches.

TENDER.

ON FOUR OR SIX WHEELS.

Capacity of tank 900 gallons.

WEIGHT OF ENGINE IN WORKING ORDER.

On drivers 36,000 pounds.
On truck 4,000 "
------
Total weight of engine, about 40,000 "

LOAD.

IN ADDITION TO ENGINE AND TENDER.

On a level 870 gross tons.
" 20 ft. grade 405 " "
" 40 " 255 " "
" 60 " 185 " "
" 80 " 140 " "
" 100 " 110 " "

Engines of this class can be adapted to a gauge of 3 feet or upward.

GENERAL SPECIFICATION.

The following general specification of an ordinary freight or passenger locomotive is given to show principal features of construction.

BOILER.

Of the best Pennsylvania cold-blast charcoal iron, three-eighths inch thick, or of best homogeneous cast-steel, five-sixteenths inch thick; all horizontal seams and junction of waist and fire-box double-riveted. Boiler well and thoroughly stayed in all its parts, provided with cleaning holes, etc. Extra welt-pieces riveted to inside of side-sheets, providing double thickness of metal for studs of expansion braces. Iron sheets three-eighths inch thick riveted with three-fourths inch rivets, placed two inches from centre to centre. Steel sheets five-sixteenths inch thick riveted with five-eighths inch rivets, placed one and seven-eighths inches from centre to centre.

WAIST made straight, with two domes, steam being taken from the forward dome; or with wagon-top and one dome.

FLUES of iron, lap-welded, with copper ferrules on fire-box ends; or of seamless drawn copper or brass.

FIRE-BOX of best homogeneous cast-steel; side- and back-sheets five-sixteenths inch thick; crown-sheet three-eighths inch thick; flue-sheet one-half inch thick. Water space three inches sides and back, four inches front. Stay bolts seven-eighths inch diameter, screwed and riveted to sheets, and not over four and one-half inches from centre to centre. Crown bars made of two pieces of wrought-iron four and one-half inches by five-eighths inch, set one and one-half inches above crown, bearing on side-sheets, placed not over four and one-half inches from centre to centre, and secured by bolts fitted to taper hole in crown-sheet, with head on under side of bolt, and nut on top bearing on crown bars. Crown stayed by braces to dome and outside shell of boiler. Fire-door opening formed by flanging and riveting together the inner and outer sheets. Blow-off cock in back or side of furnace operated from the footboard.

GRATES of cast-iron, plain or rocking, for wood and soft coal; and of water tubes, for hard coal.

ASH-PAN, with double dampers, operated from the footboard, for wood and soft coal; and with hopper with slide in bottom, for hard coal.

SMOKE-STACK of approved pattern suitable for the fuel.

CYLINDERS.

Placed horizontally; each cylinder cast in one piece with half-saddle; right and left hand cylinders reversible and interchangeable; accurately planed, fitted and bolted together in the most approved manner. Oil valves to cylinders placed in cab and connected to steam-chests by pipes running under jacket. Pipes proved to two hundred pounds pressure.

PISTONS.

Heads and followers of cast-iron, fitted with two brass rings babbited. Piston-rods of cold-rolled iron, fitted and keyed to pistons and crossheads.

GUIDES.

Of steel, or iron case-hardened, fitted to guide-yoke extending across, or secured to boiler and frames.

VALVE MOTION.

Most approved shifting link motion, graduated to cut off equally at all points of the stroke. Links made of the best hammered iron well case-hardened. Sliding block four and one-half inches long, with flanges seven inches long. Rock shafts of wrought-iron. Reverse shaft of wrought-iron, made with arms forged on.

THROTTLE-VALVE.

Balanced poppet throttle-valve of cast-iron, with double seats in vertical arm of dry-pipe.

DRIVING-WHEELS.

CENTRES of cast-iron, with hollow spokes and rims.

TIRES of cast-steel, shrunk on wheel-centres. Flanged tires five and one-half inches wide and two and three-eighths inches thick when finished. Plain tires six inches wide and two and three-eighths inches thick when finished.

AXLES of hammered iron.

WRIST-PINS of cast-steel, or iron case-hardened. SPRINGS of best quality of cast-steel.

CONNECTING-RODS of best hammered iron, furnished with all necessary straps, keys, and brasses, well fitted and finished. EQUALIZING BEAMS of most approved arrangement, with steel bearings. Driving-boxes of cast-iron with brass bearings babbited.

FRAMES.

Of hammered iron, forged solid, or with pedestals separate and bolted and keyed to place. Pedestals cased with cast-iron gibs and wedges to prevent wear by boxes. Braces bolted between pedestals, or welded in.

FEED WATER.

Supplied by one injector and one pump, or two brass pumps, with valves and cages of best hard metal accurately fitted. Plunger of hollow iron. Cock in feed-pipe regulated from footboard.

ENGINE TRUCK.

SQUARE wrought-iron frame, with centre-bearing swing bolster.

WHEELS of best spoke or plate pattern.

AXLES of best hammered iron, with inside journals.

SPRINGS of cast-steel, connected by equalizing beams.

HOUSE.

Of good pattern, substantially built of hard wood, fitted together with joint-bolts. Roof finished to carlines in strips of ash and walnut. Backboards with windows to raise and lower.

PILOT.

Of wood or iron.

FURNITURE.

Engine furnished with sand-box, alarm and signal bells, whistle, two safety-valves, steam and water gauges, heater and gauge cocks, oil-cans, etc. Also a complete set of tools, consisting of two jack-screws, pinch-bar, monkey, packing, and flat wrenches, hammer, chisels, etc.

FINISH.

Cylinders lagged with wood and cased with brass, or iron painted. Heads of cast-iron polished, or of cast-brass.

Steam-chests with cast-iron tops; bodies cased with brass, or iron painted.

Domes lagged with wood, with brass or iron casing on bodies, and cast-iron top and bottom rings.

Boiler lagged with wood and jacketed with Russia iron secured by brass bands polished.

GENERAL FEATURES OF CONSTRUCTION.

All principal parts of engine accurately fitted to gauges and thoroughly interchangeable. All movable bolts and nuts and all wearing surfaces made of steel or iron case-hardened. All wearing brasses made of ingot copper and tin, alloyed in the proportion of seven parts of the former to one of the latter. All bolts and threads to U. S. standard.

TENDER.

On two four-wheeled trucks. Wheels of best plate pattern, thirty inches in diameter. Truck frames of square wrought-iron with equalizers between springs, or of bar-iron with wooden bolsters. Axles of best hammered iron. Oil-tight boxes with brass bearings. Tank put together with angle iron corners and strongly braced. Top and bottom plates of No. 6 iron; side plates of No. 8 iron. Tender frame of wood or iron.

PAINTING.

Engine and tender to be well painted and varnished.

[Transcriber's notes: Obvious printer's errors have been corrected, all other inconsistencies are as in the original. The author's spelling has been maintained.

V[] is used to mark square roots; e.g.: V[6 + 1] means the square root of 6 + 1.]