Railways – Turntables – Actuators
Patent
1975-12-23
1977-08-16
Spar, Robert J.
Railways
Turntables
Actuators
104147A, B61J 102, B60S 1302
Patent
active
040418740
ABSTRACT:
The apparatus provides for the rotation and precise positioning of miniature train turntables so as to allow miniature locomotives and/or other miniature railroad rolling equipment to roll onto, or off of, the miniature turntable from, or to, the track to which the said apparatus has positioned the miniature turntable. Additionally, the apparatus provides electrical circuitry for the determination of the phase relationship between the miniature train turntable and the position of interest; in the case of electrically driven miniature trains, it provides circuitry for the electrical activation of the track to which the apparatus has positioned the miniature turntable; it provides circuitry for maintaining the polarity of tracks peripherally related to the miniature turntable so as to allow the movement of miniature locomotives and/or other miniature railroad rolling equipment onto, or off of, the miniature turntable from, or to, said tracks peripherally related to said turntable.
REFERENCES:
patent: 2629336 (1953-02-01), Seidel
patent: 2823622 (1958-02-01), Prewitt
patent: 2911922 (1959-11-01), Mahan et al.
patent: 3534688 (1970-10-01), Ernst
patent: 3695182 (1972-10-01), Ernst
patent: 3705553 (1972-12-01), Ernst
Reese Randolph A.
Semmes J. Gibson
Spar Robert J.
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