Educational woodworking for home and school (1908)
Park, Joseph C · New York, MacMillan · leaf 99
Fig. 83. — Screw clamp, a, frame; 6, screw; c, washer; d, jaws. 80 EDUCATIONAL WOODWORKING I malleable iron, except the screw, which is made ofwrought iron. The screw clamps range in size from 3to 10^ … Screw and crank. Fig, 84. — Adjustable steel bar clamp. 56. Adjustable Steel Bar Clamp. — The adjustablesteel bar clamps are used in clamping wide surfaces to-gether, such asdoors, shelves,etc. They aremade in differ-ent sizes to openfrom 2 J feet to10 feet. If atany time a partof the clampbreaks,…
Manual training · Woodwork
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