Sew length control and measuring apparatus

Details Sew length control and measuring apparatus Sew length control and measuring apparatus

1978-05-19

1980-05-06

Hunter, H. Hampton

Sewing

Stitch forming

Feeding work material

112318, 112322, D05B 2716

Patent

active

042011450

ABSTRACT:
The lengths of at least a pair of limp workpieces fed through a work station are controlled by pressing each of the workpieces into engagement with a separate toothed wheel and by controlling the rotational velocity of one of the toothed wheels as a function of the rotational velocity of the other toothed wheel. In one preferred embodiment the contorl of the rotational velocities of the two wheels is accomplished by means of a differential gear and a motor which operates under the control of rates of feed sensors which monitor the rates of feed of the two workpieces.

REFERENCES:
patent: 3285211 (1966-11-01), Hayes et al.
patent: 3425377 (1969-02-01), Scharmer et al.
patent: 3960097 (1976-06-01), Block
patent: 3980032 (1976-09-01), Kleinschmidt et al.
patent: 4036156 (1977-07-01), Becker et al.

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