Railways – Traction – Chain
Patent
1981-05-21
1983-09-27
Bertsch, Richard A.
Railways
Traction
Chain
104 56, 104167, 105 29R, 46122, B61B 1004, A63H 1100
Patent
active
044062311
ABSTRACT:
In systems for moving items such as novelties along a predetermined path, it is desirable that the system be lightweight and inexpensive, while being capable of forward and backward movement along the path. To accomplish this, an apparatus is provided for moving the item having a hollow holding means, such as a tube, with a slot which extends along the predetermined path. A helically threaded means is provided inside the holding means with a predetermined spacing between each of the threads. Driving means mesh with the space between the threads to move the helically threaded means relative to the hollow holding means. Mounting means, such as pins, are provided on the helically threaded means to extend through the opening in the holding means for connection of an item to the helically threaded means. As an alternative to the helically threaded means, a cable having alternating large and small diameter regions can be provided. Also, as an alternative for the hollow tube, a channel-shaped spring holder can be provided having substantially flat upper surfaces for supporting a carrier upon which the item to be moved can be mounted.
REFERENCES:
patent: 2264549 (1941-12-01), Pecker
patent: 3163054 (1964-12-01), Werner
patent: 3190140 (1965-06-01), Werner
patent: 4086855 (1978-05-01), Newbegin
patent: 4237648 (1980-12-01), Moe et al.
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