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US 4,196,831 AGranted
Punched paper tape feed wheel mechanism
AssigneeTeletype Corporation
InventorsAlexander Druschitz, Ingard B. Hodne
Life of this patent
Estimating the term…
Abstract
The elements of a drive assembly for punched paper tape are arranged in a fixed relation on a shaft (42) to which the paper feed wheel (70) is attached. The assembly includes a drive mechanism (25 or 27) for selectively imparting equal increments of rotational motion to the shaft, first and second ball bearing assemblies (65, 75), spacers (74, 68, 69) and a nut (76). The shaft assembly is slidable within holes in the frame sideplates (71, 73) and within curved surfaces of projections (66, 67) of the paper guide body (28).
Claims3
A punched paper tape feed wheel mechanism comprising:
- a frame comprising first and second sidewalls, spacer means for maintaining said sidewalls in parallel spaced apart relationship, said sidewalls having opposed first and second identical holes therein;
- a paper guide assembly comprising:
- a body having a paper tape guide surface and a complementary cover for maintaining punched paper tape within the guide;
- said body proportioned to fit snugly between said sidewalls, means for securing said body to said frame;
- said body having a hole in said guiding surface for receiving a paper feed wheel;
- said body comprising first and second downwardly extending legs respectively adjacent the inner surface of said first and second sidewalls;
- each of said downwardly extending legs having a curved surface corresponding in size and shape to at least a portion of the said opposed holes in said sidewalls;
- said curved surfaces of said legs being aligned with said holes in said sidewalls when said body is secured to said frame;
- and
- a feed wheel assembly comprising:
- a shaft having a length exceeding the distance between said sidewalls, means attached to one end of said shaft for selectively rotating said shaft in equal increments, first and second ball bearing assemblies fixed on said shaft at a spacing corresponding to the distance between said sidewalls each of said assemblies comprising a race, a retaining ring and a plurality of bearing balls held between said race and said retaining ring, the outer dimensions of the retaining rings of said ball bearing assemblies corresponding to the dimensions of said holes and said sidewalls so as to provide a sung but slidable fit of said ball bearing assemblies in said sidewalls and with said curved surfaces of said downwardly extending legs;
- a paper drive wheel assembly affixed to said shaft intermediate said ball bearing assemblies;
- and means mounted on said sidewalls for adjusting the lateral position of said feed wheel assembly in said frame.
10 more elements
Dependencies are inferred from the claim text.