The manual training school, comprising a full statement of its aims, methods, and results, with figured drawings of shop exercises in woods and metals (1887)
Woodward, C. M. (Calvin Milton), 1837-1914 · Boston, D.C. Heath · leaf 128
D PULLEY. steps of the operation are simple and easy enough ; the diffi¬ culty lies in thinking out the process. Fig. 114. Half of Grooved Pulley Pattern in Drag. In 1, Fig. 114, we have half the pattern in the drag in the usual way. In 2, Fig. 115, we have the drag rolled over and an annular… … In 3, Fig. 116, we have a mound of sand well rammed cover¬ ing the upper half of the pattern and filling the crater, but
Manual training
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