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 (1916)
Ritchey, James, Monroe, Walter W. (Walter William), b. 1869 · Chicago, American technical society · leaf 119
rm at the outer endd = the outside diameter of the pulleyiv = the width of the rimn = the number of arms Thus, for a pulley 24 inches in diameter, with a rim (Hnches wide andfitted with 5 arms, the formula becomes 24X6 = ->/3^ 5X8= 1.53 inches, or say \\ inches The width of the arm should be… … Fig. 179. Pattern for LiftingPlate
Patternmaking
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