GB190823423A - Improvements relating to Electrical Switches. - Google Patents

Abstract

23,423. Lodge, F. B., and Lodge, A. M., [trading as Lodge Bros. & Co.]. Nov. 3. switches. - Reversing-switches for use with induction coils &c., and applicable in the ignition circuits of motor road vehicles, comprise a pair of contact-rollers e mounted through springs f on a rotatable arm d, a series of fixed contacts b<1> ... b<4> connected with the battery and trembler, and means for preventing reverse rotation of the arm. The opposite fixed contacts are connected to the same circuit ; thus the contacts b<2>, b<4> are connected to the circuit of the batteries h, Fig. 3, and the contacts b<1>, b<3> are connected to the trembler circuit of the induction coil i. With the rollers against the projections c of an opposite pair of contacts, as b<1>, b<3>, the battery is disconnected from the coil. On rotating the arm to carry the rollers into contact with the projections of adjacent contacts, the circuit is closed. The next movement opens the circuit again, and the following one closes it with the current in the coil in the opposite direction, and so on. To ensure that the handle is turned in one direction only, a ratchet attachment to the spindle may be provided; or the handle may be screwed to the spindle. A two-way switch may be combined with the reversing switch by providing two contacts j<1>, j<2>, either of which may be connected by a movable arm to one of the four fixed contacts, so that either or both of the batteries h may be put into operation as desired.