Chapter CXXXIV: Section 58: Packings, Joints, Stuffing-Boxes and Pistons

(_See also p. 132._)

=2342. Piston ring joint= lapped and scarfed.

=2343. Intermediate stuffing-box= and sleeve for high and low pressure cylinders.

=2344. Dished steel piston.=

=2345. Bucket piston,= with valve and bridle and leather packing.

=2346. Stuffing-box,= with screwed cap gland.

=2347. Piston leather= for cold water.

=2348 to 2352. Piston ring joints.=

=2353. Double cone joint= for a swivelling fitting for steam or water. The joints are ground in like a mushroom valve.

=2354. Pipe connection,= with rubber disc joint, for moderate pressures.

=Swivel pipe joint.= See No. 2303.

=2355. Collar packing= for a valve spindle, where the pressure tends to compress the packing.

=2356. Piston with two ~L~ section rings,= expanded both vertically and radially by a spiral spring. This makes a tight joint with the cylinder and also with the junk ring.

=2357. Adjustable piston= or piston valve. F. H. Richards’ patent, U.S.A.

=2358. Rubber expanding plug.=

=2359. Gas engine piston,= with three rings and junk rings between them.

=2360 & 2361. Valve spindle joints= without packing or stuffing-boxes, kept tight by cone seatings and set screws.

=2362. Piston (spring) ring joint,= with glut.