Pressure roller assembly
AssigneeWang Laboratories, Inc.
InventorRichard E. Quinn, Jr.
Life of this patent
Estimating the term…
Abstract
A truck assembly unit has two identical parts which lock together capturing two rollers. The truck assembly unit is supported on a cylindrical portion of a support bar so that it can rotate through a limited range, the range being limited by a ridge running along the bar. The bar is affixed eccentrically on journals captured in the frame of a typing machine so that rotation of the bar moves the supported truck assembly towards and away from a platen. Arms supporting the rollers provide flexure to bias the rollers against the platen.
Claims4
In a mechanism for feeding web such as paper in a typing machine, a truck assembly unit comprising two identical roller support members and two identical rollers,
- said roller support members including base means for supporting said truck assembly unit on a bar structure spanning a typing machine, and spring arms supporting said rollers on the base means and, when installed in a typing machine, pressing both the rollers against a platen of a typing machine,
- the two roller support members including journal means for capturing said rollers between the support members and supporting the rollers so captured,
- the roller support members including self complimentary snap locking means for permanently locking two of them together with rollers captured therebetween to provide a permanently assembled unit for installation as a whole in a typing machine.
Dependencies are inferred from the claim text.