The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose

by Thomas Walter Barber

[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].