Patent of the Day: Repeating Alarm Clock
On this day in 1904, William Fletcher was granted U.S. Patent No. 752,319 for a REPEATING ALARM CLOCK. .
This invention relates to certain improvements in alarm-clocks, and especially to that class of clocks in which the alarm is sounded intermittently, as distinguished from the ordinary alarm mechanism, where the gong is sounded continuously until the spring has been fully unwound.
The principal object of the invention is to provide a novel form of mechanism for governing the operation of the clapper-rod and to provide a simple and inexpensive mechanism by means of which the intermittent movement may be governed by the ordinary clock mechanism.
A further object of the invention is to provide a means for regulating the intermittent movement of the clapper, so that the intervals of ringing will be uniform.
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