Variable walking foot apparatus for a sewing machine for mattres

Details Variable walking foot apparatus for a sewing machine for mattres Variable walking foot apparatus for a sewing machine for mattres

1996-03-20

1997-10-21

Lewis, Paul C.

Sewing

Method of sewing

On specified product

112 21, 112313, 112321, D05B 2704

Patent

active

056785020

ABSTRACT:
A method and apparatus for forming a partial mattress sack which prevents radial bunching of the mattresses. The method includes the steps of feeding first and second panels having different edge lengths at different rates through a sewing machine to form the partial mattress sack. The apparatus includes a variable speed upper walking foot having an automatic speed adjustment.

REFERENCES:
patent: 3256844 (1966-06-01), Chezaud et al.
patent: 4503794 (1985-03-01), Ishihara et al.
patent: 5309854 (1994-05-01), Mulcahey et al.
patent: 5520127 (1996-05-01), JeanBlanc
patent: 5526761 (1996-06-01), Mulcahey et al.

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