Modern buildings : their planning, construction and equipment (1905)
Middleton, G. A. T. (George Alexander Thomas) · London : Caxton Publishing Company, Limited · leaf 218
Modern Buildings 190 terminals, A, B, and C, and two pairs of contact springs, the under side of the brass strip S, and a similar con- tact is made on the other side of the handle. On D, E, and F, G. The points C, D, and F are connected together, G and B are connected together, and so are account… … tact exists between C and B ; while if the knob is pressed over the other way the contact is broken with a fuse attached is shown in F ig. 1S1. Two of these between C and B, and made between C and A. The are often mounted together to form a double-pole switch. method of connecting up two-way…
Building · Architecture
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
