The machinist and tool maker's instructor, containing an easy method of calculating and laying out difficult work in the machine shop .. (1896)
Genung, Edward. [from old catalog] · New York [Press of J. B. Savage, Cleveland] · leaf 218
nce between the radius of the crank andthe radius of the drum, thus: 16-^-2^=6.4, and multipliedby the compound ratio 14=89.6, and this again multiplied by50, the force on the crank =4480 pounds, the answer. Or, as follows, which is the usual way. 15Xl5=225,and 4X4=16; then 225-^-16=14 ratio, which… … THE SCREW AND GEAR. We have a machine combining the following parts, asshown in Fig. 10, in which A is a crank, 16 radius, o- length;B is a worm of 4 threads per inch; C a worm wheel 12 inchesdiameter on the pitch line. On the same shaft with the wormwheel is a pinion D, 3 inches diameter (pitch…
Machinery
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