Paper tape punch assembly

Claim 1

A punch assembly for paper data tape having drive apertures along the length thereof comprising: a toothed drive wheel for engaging said drive apertures in said tape to advance said tape in fixed increments through the assembly, means for selectively driving said toothed wheel in response to control signals and to periodic rotational motion applied to said driving means, a link, one end of said link being coupled to said driving means for imparting said periodic rotational motion to said driving means; and an adjustable eccentric assembly, said eccentric assembly comprising: a shaft, a first means having an aperture therethrough for mounting said first means on said shaft and eccentric therewith, said first means arranged to be rotatably driven at a uniform rate; a body; a ball bearing assembly arranged to receive the second end of said link and to be mounted on said body; means for securing said ball bearing assembly to said body; said body comprising: a circular outer surface for engaging the race of said ball bearing assembly, a circular inner surface substantially larger in diameter than the diameter of said shaft to permit said shaft to be passed through said body and to adjust said body relative to the circular surface of said shaft, means for securing said body to said first means in a selected position including: adjusting means for adjusting the relative position of said body about said shaft to select a position corresponding to a desired eccentric motion, said adjusting means comprising: a mounting screw; a cylindrical sleeve having an eccentric passage therethrough for receiving said mounting screw and comprising an exposed flange for rotating said sleeve about said mounting screw, a mating passage through said first means for receiving said sleeve and means in said body for engaging said mounting screw, and a second mounting means for locking said body to said first means in said selected position.