US 3,949,852 AGranted

Typebar support

AssigneeSCM Corporation

InventorsHans W. Mueller, Richard E. Shattuck

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Abstract

A typebar support for low cost typewriters includes an arcuate segment supported on a frame where a plurality of typebars are pivotally mounted. The free ends of the typebars are supported by an arcuate support. The support is rockably suspended on the frame by a pair of arms extending from the ends of the support to the frame. The arms are biased upward by a pair of springs and limited in its upward movement by an abutment mounted on the segment. As a typebar returns to rest after a print cycle has been completed, the energy accumulated in the typebar during flight is partially dissipated when it impacts on a yieldable pad on the typebar receiving edge of the support. The remaining energy is absorbed by the rocking motion of the support. The energy dissipation by the yieldable pad combined with the energy absorption by the rockable support results in a typebar support that effectively reduces typebar rebound and the accompanying problems.

Claims5

Dependent claims

In a typewriter having a frame, a typebar segment rigidly assembled to the frame, a plurality of typebars having one end pivotally anchored in the segment, and a yieldable support having a rest position for the free end of the typebars, the yieldable support comprising:

arcuate means spaced from the frame for supporting the free end of the typebars;
arm means having one end fixed to said arcuate means and having its opposite end defining an enlarged aperture therethrough;
retention means comprising a reduced cross sectional portion, and an enlarged cross sectional portion, said reduced portion extending through and beyond said aperture and into said frame with sufficient clearance between said reduced portion and said aperture to allow said arm means to rock relative to the frame and wherein said enlarged portion is secured to said reduced portion on the side of said aperture opposite said frame;
and
biasing means for dissipating energy of an impacting typebar and for urging said arm means toward the rest position of the free end of the typebars.

2 more elements

Dependencies are inferred from the claim text.