1
Improvements in or relating to combined electric switches and plug couplings. Walsall Conduits, Ernest Perkins, October 28, 1935: GB437309-A (5 worldwide citation)

437,309. Snap-action switches. WALSALL CONDUITS, Ltd., and PERKINS, E., Excelsior Works, West Bromwich, Staffordshire. May 9, 1934, No. 13980. [Class 38 (v)] [See also Group XXXVI] A switch associated with a wall socket fixture is operated by a rotatable boss 17, Fig. 2, that is turned by a projecti ...


2
Improvements in or relating to combined electric switches and plug couplings. Walsall Conduits, Ernest Gough, May 8, 1941: GB536276-A

536,276. Two-part couplings. WALSALL CONDUITS, Ltd., and GOUGH, E. Dec. 14, 1939, No. 32212. [Class 38 (i)] A switch socket fitting having means for locking the switch open when the plug is removed has also a resilient device associated with one of the sockets so as to surround one of the pins, e.g. ...


3
Improvements in or relating to combined electric switches and plug couplings. Wandsworth Electrical Mfg Comp, Thomas Batchelor, July 9, 1936: GB450026-A

450,026. Plug couplings. WANDSWORTH ELECTRICAL MANUFACTURING CO., Ltd., Imperial Works, Kenyon Street, and BATCHELOR, T., 67, The Avenue, Acocks Green, both in Birmingham. Feb. 22, 1935, No. 5677. [Class 38 (i)] In a switch socket, a spring-loaded lever or catch which, prior to the insertion of the ...



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