Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 314
and floor connector for office or dining room floor or any placewhere it is desirable to operate a signal on the floor. A slight pressure of the foot willclose the contact. Its construction is simple; its action perfect. When placed underrug or carpet it will not become short circuited. The felt… … SWITCH
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
