Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 164
he motion. Ordinarily the tool cuts only when the platen is movingtoward the right Fig. 173. As a result of this condition, the 122 MACHINE SHOP WORK. platen is made to move more rapidly in the direction of tliearrow than in the reveree. Tliis is accomplished by varying thesj)eeds of the pnlleys D… … Fig. 173. end of the travel of the platen. It is so arranged that anyvertical or horizontal feed may be given to the tool. Planers are made in a great variety of sizes and styles.Very frequently there are three driving pulleys placed side byside on the same shaft, the central one of the three keyed…
Mechanical engineering
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