ELECTRIC ALARM TIMEPIECE
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Abstract
THE ALARM-HAND PIPE CARRIES A SWITCH CONTACT EMBEDDED IN A SYNTHETIC CONTACT WHEEL TO EXPOSE ONE SURFACE, THE OTHER CONTACT OF WHICH BEING CARRIED BY THE HOUR WHEEL TO SLIDE OVER THE CONTACT WHEEL AND TO MAKE CONTACT WITH THE FIRST CONTACT WHEN AT THE POSITION OF THE LATTER. THE DIAL SUPPORTS THE CONTACT WHEEL AGAINST AXIAL MOVEMENT, AND THE ONLY FRICTION BETWEEN THE HOUR AND CONTACT WHEELS IS THAT OF THE ONE CONTACT SLIDING OVER THE CONTACT WHEEL.
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