. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . to lesstemper-atureAbso-lute. Dry. With ^- Cubicume. metres In j kiloj^Tiun- metret. Cubic feetin foot-pounds. Cubicmetres Inkilopnm- metres. Cubicfeet infoot-pounds. Cent. Fahr. By increaie oftemperature al me. cientmoist-ure. 1 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 01 05 I | 25 1 200 )0167 18,4750 113 :W0125; 21,422 0 111 oiool DjduceJfrom 3. (i8 ,
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . to lesstemper-atureAbso-lute. Dry. With ^- Cubicume. metres In j kiloj^Tiun- metret. Cubic feetin foot-pounds. Cubicmetres Inkilopnm- metres. Cubicfeet infoot-pounds. Cent. Fahr. By increaie oftemperature al me. cientmoist-ure. 1 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 01 05 I | 25 1 200 )0167 18,4750 113 :W0125; 21,422 0 111 oiool DjduceJfrom 3. (i8 , 6-0120-4590 .3740 7,93213,,20<»,518 Durliicdfrom (J. iiois .%6r8 4,32<l4,,021 20 K5 5i:iO 4105 0195-3220 5243-2203 02S2299 681K6207:«()38442947050f) ? 5 1-0 1 22-3 1-375 1 - 495 1-()81 t kWH ? 7332,0043,4774,0295,8,090 0-6920 1900 2130-2-100 2000 274 » i:i5 5 107 179 liK) 284 567 8 g 10 3 0 4 04-85-40 06 4 »):CoiH) 4S,.(HK)75,000 .?r),(K)o ;K)52,.500 r))) 6 1 ?Hli .570-2 AIR-HOIST. 21. Air-hoist. AIR-HOIST. Fi<,. 1 shows a pneumatic hoist that has recently been introduced byPedrick & Ayer, of Phihidelphia, as a substitute for the commonly used chain hoists andblocks. The cylinder is made of extra strong wrought-iron pipe, whichis carefully reamed out; to the upper head is fastened an ordinary pipe-cap, to which there is attached a hook by which the hoists can be readilyhung to the overhead trolley, and, if desired, the hoist can be transferredto different parts of the shop. The lower head is made of two of which is screwed to the end of the cylinder and has a lug to re-ceive a screw-end of the valve which supplies the air for lifting. Bythis construction the piston can not travel below the air-opening, whichwould interfere with the proper operation of the hoist. To this lowerring
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
