Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 145
tly perforated. The racks 5 and 17, Fig. 2429, aredrawn with three teeth in the length of a foot, which will divide plates to a four-inch pitch; but it willbe obvious, that for a different pitch the racks must be changed, and it may in some cases, (such aswhen the pitcli required is not an aliquot… … JACQUARD PERFORATING MACHINE. 14]
Mechanical engineering · Mechanics · Engineering
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