. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 142. TYPES OF COMPOUNDENGINES. Twin compound, closeconnected tandem with high-pressurecylinders forward, cranks at 120° onends of shaft, fly wheel in center. 143. The relative positions of thepistons are shown in the two figuresat alternate strokes. 73 /4 STEAM POWER


. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 142. TYPES OF COMPOUNDENGINES. Twin compound, closeconnected tandem with high-pressurecylinders forward, cranks at 120° onends of shaft, fly wheel in center. 143. The relative positions of thepistons are shown in the two figuresat alternate strokes. 73 /4 STEAM POWER 144. TYPES OF COMPOUNDENGINES. Tandem compoundtypes in which the forward cylinderis high pressure with close connectionto the low-pressure-cylinder with onlya metallic sleeve as a stuffing box. 145. In the reverse type the cylin-ders are independent and separated ashort distance with regular stuffingboxes. 146. TRIPLE EXPANSION ENGINE; with double tandemhigh-pressure cyhnder. Edwards patent. The object of the design is to produce an ar-


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