US 3,963,109 AGranted

Single element typehead positioning mechanism

AssigneeRoyal Business Machines, Inc.

InventorWilliam J. Smith

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Abstract

A non-homing positioning mechanism to effect type selective movements of a single element typehead by means of coordinate band systems wherein the coordinate band systems are cntrolled by a translator comprising a four armed cross-shaped member unidirectionally rotatable in 90.degree. steps. A set of radially spaced pins are arranged along opposing arms of the cross-shaped member, the sets being alternately selectively settable in response to successive character selections to cause selective band displacement incident to each 90.degree. rotation of said cross-member. One end of each band system is anchored and the other end is connected to position and hold the typehead to a selected character in accordance with the displacement thereof through selected pins on opposing arms of and incident to movement of the cross-shaped member.

Claims10

Dependent claims

In a machine having a positionable type element and translator mechanism for positioning said type element to any of a plurality of selected coordinate positions in response to coded input signals,

means biasing said type element to a zero coordinate position,
a rotatably indexable member,
a plurality of pins mounted on said rotatably indexable member at locations spaced from the axis of rotation thereof and movable from unset to set positions in an axial direction,
at least one band anchored at one end and connected at its other end to said type element, said band being located in the path of movement of for displacement by set pins on and incident to indexing of said rotatably indexable member,
means for setting pins in response to input code signals,
and means responsive to a printing cycle initiating signal for indexing said rotatably indexible member through 90.degree. whereby set pins will displace said band to position said type element to a selected position incident to indexing movement of said rotatably indexable member.

3 more elements

Dependencies are inferred from the claim text.