The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose; (1902)
Barber, Thomas Walter. [from old catalog] · New York, Spon & Chamberlain · leaf 145
modifications of No. 1120. 1123. Direct-acting, with rocking lever valve motion; see the* Worth-ington and other Duplex pumps, in which two engines arecombined so that one works the valve of the other. 1122,1124, & 1125. Other forms of direct-acting engines. 1126. Horizontal compound… … nt&.
Mechanical movements
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