Setting means for estimated time of arrival clock hands

Details Setting means for estimated time of arrival clock hands Setting means for estimated time of arrival clock hands

1976-01-12

1977-03-22

Witkowski, Stanley J.

58152G, 58 855, G04B 1928, G04B 4706

Patent

active

040129004

ABSTRACT:
A clock for indicating estimated time of arrival has a minute hand and hour hand for indicating present time in combination with a minute and hour hand which are set for estimated time of arrival (ETA). An ETA hour hand knob positioned above the crystal on the face of the clock has a hollow shaft which protrudes through a central aperture in the clock crystal. The ETA hour hand is mounted to the shaft and mounting tension for the hour hand knob is maintained by a spring washer between the ETA hour hand and clock crystal. An ETA minute hand knob has a shaft portion which coaxially protrudes through the hollow shaft of the hour hand knob. An ETA minute hand is securely fastened to the end of the minute hand knob shaft. A second spring washer is provided between a shoulder on the ETA minute hand knob and a top portion of the hour hand knob, the entire combination providing a simple, stable, individually settable ETA hour and minute hand set.

REFERENCES:
patent: 267824 (1882-11-01), Bell
patent: 1790359 (1931-01-01), Weir
patent: 2645077 (1953-07-01), Olson
patent: 3837161 (1974-09-01), Wuthrich

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