Pattern making; a practical treatise for the pattern maker on wood-working and wood turning, tools and equipment, construction of simple and complicated patterns, modern molding machines and molding practice (1921)
Ritchey, James, Monroe, Walter W. (Walter William), b. 1869 · Chicago, American technical society · leaf 120
proportioned to thewidth of the rim as well asits diameter. The length ofthe hub should be abouttwo-thirds the width of therim, except in the cases oftight and loose pulleys, wherethe hub should be a triflelonger than the width of the rim, and it may then project aboutI inch on the sides in… … Draw Iron Screw Draw Plate Fig. 182. Rapping and Draw Plate 104 PATTERN MAKING The molder is therefore in the habit of rapping the pattern gentl:*In order to loosen it in the sand before attempting to draw it. lithe pattern is not provided ^vith a metal plate, the molder will drivethe sharp point…
Patternmaking
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