Diehl Datensysteme G.m.b.h

Gottfried Burkhardt

Andreas Metschnabl

A type carrier arrangement for producing a roller print, which includes a continuously rotating type drum having arranged thereon a plurality of type carriers respectively carrying one type. Each type carrier has one gear segment arranged thereon for producing a rolling print. This print is brought about by a control member in cooperation with a gear segment associated with the printing area and not rotating with the type drum. The gear segment of the type drum includes a guiding section formed by the omission of a tooth. After the gear segment has meshed with the tooth segment designed as inner tooth segment, the guiding section is held by fixing means in the starting position thereof. The control means is designed as pawl controlled to act upon a ratchet tooth on the type carrier shaft so that the gear segment is turned in the direction toward the inner tooth segment. Each type shaft comprises in one cross-sectional plane at least two types offset relative to each other at an angle. The types are adapted by stationary pawls arranged in conformity with the type-offset selectively to be caused to print. The tooth spaces of the inner tooth segments correspond to the total of the number of teeth of the gear segment and the number of teeth of the maximum type-offset.

Type carrier arrangement for roller printing

A reversing device for the longitudinal advance of a ribbon on type printers for the alternating drive of two reels by means of a feed shaft which is selectively drivingly connectable to one of the gears respectively connected to the reels for the ribbon. The drive from the respective winding-up reel to the respective unwinding reel is reversible by a feeler lever controlled by the ribbon coil, by a second lever adapted to be controlled by the feeler lever while being displaceably guided by an interengaging pivot-slot arrangement, and by an eccentric rotating in synchronism with the feed shaft. The eccentric is arranged on a stationarily journalled drive shaft continuously drivingly connected to the feed shaft. The displaceable second lever is designed as a pendulum lever displaceable about perpendicularly to the longitudinal axis of the feed shaft and is pivotal about parallelly to the longitudinal axis of the feed shaft. The pendulum lever comprises a pin engaged by the feeler lever for the longitudinal displacement thereof and also comprises two abutments which for purposes of reversing the transporting direction selectively cooperate with one of two abutments on the feed shaft for an axial displacement thereof.

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Winkelhaid, Germany

Gottfried Burkhardt