Back to results
US 4,441,444 AGranted
Anti-friction apparatus for cloth feedplate
AssigneeAMF Incorporated
InventorWilhelm H. Jung
Life of this patent
Estimating the term…
Abstract
A throat plate of a sewing machine with a feed plate is provided with disc type bearings retained in fixed position adjacent to the needle hole of the throat plate to support and provide low friction surfaces in contact with the feed plate.
Claims8
In a sewing machine having a throatplate with a needle hole and a feedplate disposed above said throatplate universally driven in accordance with a preprogrammed pattern and having an opening continuously exposing the needle hole, the improvement comprising an anti-friction means comprising
- a plurality of openings in said throat plate in a spaced series around said needle hole;
- a plurality of bearing and support means each disposed in close fitting relationship in a different one of said openings and extending outwardly therefrom engaging said feed plate from beneath to support same at a fixed distance above the throatplate and to provide a low friction connection beneath the throatplate and the feedplate;
- said bearing means being of a better wear resistant material having a lower coefficient of friction than said throat and feedplates.
Dependencies are inferred from the claim text.