Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 704
Bimple form. 1. \\ hen in use, in the course of the rraphic circuit, proceeding from the battery. When the hand depresses the key, itwith the knob and metallic Btrip below, making connection between the two -ind completing the battery circuit. While the key is depressed, a continuous curi.but if it…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
