GB190405294A - Improvements in or relating to Electric Alarms. - Google Patents

Abstract

5294. Kiewert, J. March 3. Signals, electric-bell ; signals, time-alarm. - In electric contact apparatus for clocks, whereby circuits may be energized by the clock at desired times to sound bells or other alarms, the movable ebonite clamps a can be fixed by means of a setscrew at any point upon a ring or frame surrounding the clock dial r, and, when in position, the hour hand s makes contact with the flat spring b as it passes, while the minute hand escapes it. The connections to the hour hand. and, by means of a flexible wire t to the spring are such that the contact completes a circuit containing a battery, switch, and electric bell. The Figure shows a number of ccntact-pieces upon the clock, a common battery v, and a number of bells w, each with its switch c, together with a cross-strip plug switchboard z by means of which any spring contact may be put into the circuit of any bell. Where the dial of the clock is let into a wooden plate or bezel, the terminal a is preferably placed in one of a number of holes arranged at equal intervals in a circle around the dial.