Hook drive for chain stitch sewing machines, particularly for ha

Details Hook drive for chain stitch sewing machines, particularly for ha Hook drive for chain stitch sewing machines, particularly for ha

1987-07-15

1988-05-10

Reynolds, Wm. Carter

Sewing

Stitch forming

Overseaming

112169, 112199, D05B 106

Patent

active

047427876

ABSTRACT:
A hook drive for chain stitch sewing machines, in particular for those suited to be hand-held, which comprises an upper hook and a lower hook of curvilinear configuration having a hook holding shank supported obliquely in a box-like case. Each hook is connected to a drive including a gear whereto one end of a swinging yoke is articulated eccentrically which has the opposite end pivoted centrally to a block made rigid with a respective one of said shanks. The two driving gears, one of which is connected to a drive shaft, are in meshing engagement with each other and with a third gear which may drive a movable cutter blade.

REFERENCES:
patent: 407286 (1889-07-01), Fefel
patent: 2639683 (1953-05-01), Huntington
patent: 2829612 (1958-04-01), Schwartz
patent: 3257979 (1966-06-01), Michaud

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