Air operated hour clock

Details Air operated hour clock Air operated hour clock

1977-12-15

1979-10-16

Dobeck, B.

58 2, G04B 126

Patent

active

041708695

ABSTRACT:
This clock consists primarily of a main body to which is attached an air connection, on one end. Within the main body is a toothed piston rotor with spaced-apart indentations that removably receive a pair of drive screws in the base of the main body. The piston rotor is spring loaded on a central shaft, and a toothed cap is pinned in the bore of the main body. When air enters the main body, the piston rotor, the shaft and the hour hand are forced up, and the teeth turn this unit twenty-two degrees. When the air is turned off, the spring returns this unit to the base and forces the unit onto the drive screws of the main body, which turns the unit another eight degrees. This cycle advances the hour hand one hour, which is indicated by means of the radially spaced drive screws in the toothed cap.

REFERENCES:
patent: 2930362 (1960-03-01), Riester
patent: 3117413 (1964-01-01), Pulaski
patent: 3625126 (1971-12-01), Land

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