. 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 74 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 74 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 cylinder. Edwards patent. The object of the design is to produce an ar- B t cr .T31—M L™. rangement of cyHn- ders, steam valves,and ports whereby theback pressure of theintermediate cylinderwill not act as an op-posing force on thehigh-pressure piston,and will also furnishfull pressure of steamin the intermediatewithout increasing back pressure in the high. Steam enters the cham-ber a^, passes through an opening between the two piston valves, whichopened to the upper piston, a, when it passed the bottom center. Thecut shows it in the act of closing. When working as a triple expansion the valve closes when the pistonre
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Keywords: ., bookauthorhiscoxga, bookcentury1900, bookdecade1910, bookyear1910
