Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Retarded or delayed type
Patent
1975-10-30
1977-09-13
Jackmon, E. S.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Retarded or delayed type
335 81, 335229, G04C 300, H01H 5122, H01F 708
Patent
active
040473767
ABSTRACT:
An electrical clock is provided in which pulses of a 10% duty cycle are repeatedly applied at a one second rate to a solenoid which attracts an armature attached to a reciprocating ratchet once every second, the reciprocating ratchet being returned to a neutral position between each pulse. The reciprocating ratchet drives a toothed wheel which is located on a main axis of the clock frame view suitable pawls. The second hand of the clock is directly coupled by a second hand shaft to the toothed wheel. The toothed wheel, by means of a pinion, drives an intermediate gear which is located outbound from the main axis. The intermediate gear drives a minute gear, the minute gear being mounted on a minute tube concentric with the second hand shaft. The minute hand is directly affixed to the minute hand tube. The minute gear, by means of a pinion, drives an outbound motion gear, the motion gear in turn driving an hour gear coupled to an hour tube whose axis is concentric with the second shaft and the minute tube. The hour hand is affixed directly to the hour tube. Various other embodiments of the electrical clock mechanisms of the subject invention are described in more detail herein.
REFERENCES:
patent: 3140431 (1964-07-01), Schalkwijk
patent: 3528239 (1970-09-01), Ganter et al.
patent: 3748846 (1973-07-01), Kikuchi
patent: 3766728 (1973-10-01), Nagy
patent: 3857235 (1974-12-01), Wobler
patent: 3902310 (1975-09-01), Kreidler
Arbuckle F. M.
Bunker Ramo Corporation
Jackmon E. S.
Niro R. P.
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