Metal working – Upholstered article making – Tufting
Patent
1997-09-10
2000-08-15
Gorski, Joseph M.
Metal working
Upholstered article making
Tufting
29771, 29822, 53114, B68G 700
Patent
active
061016977
ABSTRACT:
The apparatus takes coil springs and sequentially forms fabric pockets around the coil springs to form a string of pocket coil springs. It includes a system for forming a length of folded fabric for movement on a frame, a split cylinder which moves to an inclined position to receive a coil spring and then to a generally vertical position to locate the coil spring on a support member and to allow a compressing member to extend through the gap of the split cylinder to compress the coil spring. An inserting device is employed to insert the compressed coil spring between the folded layers of the length of folded fabric which then is moved on the frame to bonding units to allow an edge bond and transverse bonds to be made to form a pocket around each coil spring. The bonding units includes of two stationary ultrasonic bonding devices fixedly located below the length of folded fabric with movable anvils located above the length of folded fabric which are employed for carrying out the bonding operations.
REFERENCES:
patent: 1861429 (1932-05-01), Schneider et al.
patent: 3668816 (1972-06-01), Thompson
patent: 4389743 (1983-06-01), Callaway
patent: 5537699 (1996-07-01), Bonaddio et al.
patent: 5613287 (1997-03-01), St. Clair
McLaren W. Kenneth
Stumpf Walter
Gorski Joseph M.
International Bedding Corporation, Inc.
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