Journal of the Franklin Institute; devoted to science and the mechanic arts (1826)
Franklin Institute (Philadelphia, Pa.) · Oxford, Eng. [etc.] Pergamon Press [etc.] · leaf 182
side of the switch, and about half way between its ex-tremity and the pivot on which it moves, is a hole in the cast ironplate, on which the switch traverses, of a fitting size: through thishole a catch projects from beneath the plate, over which the switchmoves, as does the latch of a door; except… … a. The catch, or latch. b. Lever extending from it. c. The axle, working on.d d. Pivots. e. Spring of the lever./. Projecting arm, moved by g. An arm projecting from h. The vertical axle.k. Shoulder, and o. Pin on do. m m. The cast iron plate on which the switch moves. The catch a, (see the…
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