Scientific American Supplement, No. 344, August 5, 1882
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The spindle isheld by the sleeve, g, which latter is screwed into the spindle rail, S, this being moved by the pinion, a; the collar is elongated upwards in acuplike form, c, the better to hold the oil, and keep it from flying;d is the wharf, which has attached to it the sleeve, m, and which issituated loosely in the space between the spindle and the footstep, e. Above the wharf the spindle is hexagonal in shape, and to this part isattached the friction plate, a. Between the latter and the uppe...r surfaceof the wharf a cloth or felt washer is inserted, to act as a brake. Thefootstep, e, is filled with oil, in which run the foot of the spindleand the sleeve m, the latter turning upon a steel ring situated on thebottom of the footstep. As, thus, the foot of the spindle is quite free, the upper part of the spindle can give sideways in the direction of anysudden pull, and the foot of the spindle can follow this motion in theopposite direction, the collar forming the fulcrum for the spindle.
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