Teletype Corporation

Jerome L DeBoo

Werner Jung

David G Geis

The drive mechanism for a paper tape punch and reader assembly utilizes tape drive assemblies which move the paper tape in response to the application of continuous periodic motion and control signals. The periodic motion serves to oscillate a rocker plate between first and second limits and the control signls serve to selectively engage and disengage a detent which effects coupling between the drive shaft and the source of periodic motion. The periodic motion is imparted to the drive assembly by a connecting link which in turn is driven by an adjustable eccentric. The eccentric comprises a pulley plate which is fixed to a shaft. A circular body is adjustably movable with respect to the pulley plate and is arranged to engage the race of a ball bearing assembly which further comprises balls and a retaining ring. The connecting link has a circular opening which provides a snug fit to the exterior of the retaining ring. The pulley plate and the body are held in a fixed physical relation by two locking screws and the relative position of the two is established by an eccentric which is mounted on one of the locking screws.

Paper tape punch assembly

A paper guide extends around the platen of a printing machine and has a flexible extension which bears against the front of the moving printing mechanism included in the printing machine. The close proximity of the paper guide to the printing mechanism of the printing machine serves to guide the paper as closely as possible into the small gap between the printing head and the platen and also to guide the paper as accurately as possible out through the paper-exit opening of the cabinet of the printing machine. Being so closely guided (particularly in the case of multiple sheet carbon set-ups or the joints of fan-fold paper), the leading edge or a fold of the paper is less likely to catch on the ribbon or get caught on the edge of the paper-exit opening of the cabinet. The flexible final guide extends so high up the printing mechanism side of the platen that it actually bears against the printing head and is flexibly deflected by the printing head as the printing head moves across the front of the platen.

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Barrington, IL, United States of America

Jerome L DeBoo