The pattern maker's assistant : embracing lathe work, branch work, core work, sweep work, and practical gear construction : the preparation and use of tools : together with a large collection of useful and valuable tables (1878)
Rose, Joshua · New York : D. Van Nostrand · leaf 142
141 "WHEIUL AND PULLEY WORK. foregoiflg. It is as follows : Upon a flat piece of board, fasten a piece of paper, and describe upon the latter a cir- cle; then divide the circumference of the latter into as many equal parts as it is required to have arms, and dray ^ lines from this center of the… … at or near the extremities, when any error will be easily detected and rectified. Then glue the pointed ends all to- gether, fastening each piece temporarily to the board, as before, and set the whole away, until it is quite dry, when the piece may be taken from the board, and the required form…
Patternmaking
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