Chapter LXV: Section 75: ROTARY ENGINES, PUMPS, &c

Nearly all rotary engines can be used either as motors, pumps, blowers, or meters, and most of the following typical devices have been applied to all four purposes. Most of them are reversible by simply reversing the direction of the motor fluid.

=1305. Disston’s;= used as a pressure blower.

=1306. Root’s, blower and pump.=

=1307. Root’s.=

=1308. Mackenzie’s;= may have one, two, or three vanes.

=1309. Gould’s.=

=1310. Bagley and Sewall’s.=

=1311. Greindl’s rotary pump.=

=1312, 1313, 1314, & 1315. Varieties of intergeared piston rotary engines.=

=1316. The small crescent-shaped piston= revolves three times to one revolution of the three-armed piston.

=1317. The hinged shutter= is thrown out of the way each time the revolving arm passes it.

=1318. Sliding shutter= and cam piston device.

=1319 & 1320. Varieties of the “Root” engine.=

=1321. The hinged vanes= are closed upon the revolving piston as they pass the flat side of the casing.

=1322. Has an eccentric piston and two hinged vanes.=

=1323. Eccentric piston and sliding diaphragm.=

=1324. Klein’s motion.= The eccentric ring revolves in contact with the inner and outer casings, but is prevented from revolving on its axis by the fixed shutter and slot.

=1325. Baker’s pressure blower.=

=1326. A modification of No. 1323.=

=1327. The eccentric ring= revolves on its centre, allowing the vanes to alternately project into the steam space as the wheel revolves.

=1328. Ivory’s.= An eccentric cam and two sliding shutters, with a central steam inlet.

=1329. Mellor’s= has a rocking vane oscillated by an eccentric piston carried round by a crank.

=1330. Eccentric piston and two sliding vanes= or steam stops.

=1331. Differential rotary engine,= with elliptical gear (see Section 34), or Stewart’s differential gear (No. 554) may be employed.

=The “Tower” spherical engine= is a well-known form of rotary engine.
See _Engineer_, August 10th, 1883.

=1332. An eccentric four-armed piston,= with four rolling stoppers or packings.

=1333. Mellor’s patent pump= has a rocking vane or partition, with packing device which accommodates itself to the revolving oval piston.

=1334. Bisschop’s disc engine,= with three or four cylinders, single acting, whose rams press alternately on the edge of the disc.

=1335. Another form of disc engine,= in which partitions (rising and falling vertically) form the steam stops.

=1336. A modification of 1316.=

=1337. Rotary or centrifugal pump= or fan, numerous varieties of which are in use. Many of the later forms, as Blackman’s and others, have the vanes fixed diagonally so as to propel the air at right angles to the plane of motion.