nions of the key the ear, the bail is thus held in upright position. position by a lever at c is pivoted a forwardly extending forked cross key, or lever, a. The key knob is divided, its forward portion Surg^eon Parke. the stub piece being attached directly to the end of the key lever in may be… … a brilliant repre- slippingoff un- VAN DEUSEN'S TELEGRAPH KEY, sentative gather- til its removal the forward end of the forked lever, each arm of which ing of the members of the medical profession, who Is desired. has a strip of insulating material resting on the side had assembled to do him honor…
Patents · Device · Hops · Scientific American · Ice cream · Electric light · Illustration represents · Revolving tower · Gutta percha · Patent office · Steel ties · Stub piece · Switch rod
Internet Archive · Public domain (published before 1931). Free to use for anything.
