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Speed

If a drum 42 1/4 inches deam-
eter drives the beater of a [blowing?]
machine 1344 revolutions per
What number of revolutions per
minute will the beater of
make if driven from a drum
49 1/25 inches diameter
42 1/4 or 42-25: 1344: [:49.04?] or 43 1/25
1344
49.04
5376
120960
5376
4225 [sqrt?] 65909.76 1560
revolutions of beater a minute
nearly

Speed
If a [pully?] 13 inches diameter
drives the main cylindar of a
[carding?] engine at the rate of 126
revolutions a minute what
diameter must a pully be, to
reduce the speed of the cylindar
to 112 revolutions

126 revolutions given
13
376 inches diameter of given pully
revolutions required 126
112 [sqrt?] 163 14.625 or 14 5/8 inches diameter of pully required
112
518
448
700
672
280
224
560
560