Automatic Switch In 1929

103

00:45:54

Bottom circuit shows working circuit with lamp where common outlet plug would be.

Mounted on board base. at left, is wind up alarm clock with wind up alarm and both top alarm bells removed.  Clock is secured with twisted wire to board base.  The flag type lever is soldered to wind up alarm winder lever.  When set alarm time is reached, the flag will rotate downward to open the knife switch handle (where lamp is) and come to rest on wood block below lamp in about 1/3 of turn.  The block of wood at far right is mount for knife switch.

This can be set to turn on/ off radios,fans, or heating pads with alarm clock precision.

published 10 years ago

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