Clock or calendar with removable casing

Details Clock or calendar with removable casing Clock or calendar with removable casing

1975-08-25

1976-12-14

Weldon, Ulysses

58 54, 58 56, 58127R, G04B 3700

Patent

active

039967360

ABSTRACT:
Apparatus for indicating the passage of time, which may be a clock or a calendar, comprising a base that is mounted on a wall and operating mechanism that is mounted on the forward side of the base. A removable cover comprises a transparent front plate surrounded by a frame, which frame in turn surrounds and is releasably secured to a forwardly extending flange that surrounds the base plate. Bosses on the upper inner side of the rear edge of the frame engage in upwardly opening recesses on the top of the base flange; while interengageable hooks at the bottom of the frame and base flange releasably retain the cover on the base. One of these hooks is manually disengageable from the other by pressing on a spring-urged button.

REFERENCES:
patent: 2253715 (1941-08-01), Lux
patent: 2558518 (1951-06-01), Heymann
patent: 2638735 (1953-05-01), Schlenker
patent: 2838905 (1958-06-01), Marble
patent: 3837160 (1974-09-01), Hettich
patent: 3905189 (1975-09-01), Siefert et al.

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