Rogers' drawing and design; an educational treatise relating to linear drawing; machine design; working drawings; transmission methods; steam, electrical and metal working machines and parts; lathes; boiler and parts; instruments and their use; tables, etc (1913)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 375
lder which is rapidly becoming mostpopular, is shown in Fig. 574; it is calledthe Reaction Brush Holder. Here thebrush is wedded in between the brushholder and the commutator without anysupport on the outer side, the pressure ofthe curved lever forcing the carbon brushagainst the inclined face of… … Fig. 574. the notches on the lever, thus regulating the pressureof the lever to any desired degree. The magnet frame may be cast in one or moreparts, together with the pole pieces, or the polepieces may be bolted to the frame. The magnetframe must be rigidly secured to the base. Thebearings or…
Mechanical drawing · Machine design
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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