Timing device

Details Timing device Timing device

1978-08-17

1980-06-24

Jackmon, Edith S.

Horology: time measuring systems or devices

Signalling means

Time condition responsive

G04B 2302

Patent

active

042088674

ABSTRACT:
In an alarm clock with an alarm vibrator arm and a reciprocating vibrator shut-off lever having an alarm "on" position out of engagement with the vibrator arm and an "off" position in engagement with the arm, an improvement is provided in the shut-off lever which consists of making the lever in an integral molded plastic flat plane with a pair of co-planar upper and lower cantilever arms extending from a bight to form the free end, the arms being disposed adjacent and coextensive with each other. The arms are resiliently deformable toward each other in the plane and are disposed in the slot to be guided along the upper and lower edges respectively. The arms are inwardly tapered on their outer surfaces from the free end towards the bight and a bevel section is provided on the upper arm at the end thereof. The pivot pin extends below the upper edge of the slot to form a cooperating detent with the bevel when the lever is in the "on" position. Plural stops are disposed along the lower lever edge limiting reciprocation in the "on" and "off" positions.

REFERENCES:
patent: 2768332 (1956-10-01), Protzmann et al.
patent: 2920438 (1960-01-01), Phaneuf
patent: 3559396 (1971-02-01), Wingler

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