Endless-belt type walking presser foot

Abstract

An endless belt-type walking presser foot is provided, which is capable of preventing slippage of cloth during superimposed seaming. A frame member has a pair of first endless belt guide grooves formed in a bottom surface thereof at locations near lateral side edges of the bottom surface and extending in a longitudinal direction of the presser foot. A pair of roller supports are provided in front and rear portions of the frame member. A plurality of rollers are each journaled to a corresponding one of the roller supports and each have a second endless-belt guide groove in the form of an annulus formed therein. A pair of endless belts each have a train of guide projections formed on an inner peripheral surface thereof and fitted in a corresponding one of the first endless belt guide grooves and a corresponding one of the second endless belt guide grooves, and a train of cloth slippage preventing projections are formed on an outer peripheral surface thereof. The inner peripheral surface of each of the endless belts has a train of small projections formed thereon which are configured so as to be in point or line contact with the bottom surface of the frame member and the roller.

Dependencies are inferred from the claim text.