Metal working – Upholstered article making – Tufting
Patent
1989-06-01
1990-03-13
Echols, P. W.
Metal working
Upholstered article making
Tufting
29173, 29709, 29712, 29715, 200 6141, 140 93D, B68G 700
Patent
active
049073273
ABSTRACT:
A device for automatically securing a borderwire on a mattress innerspring comprising a plurality of coils is disclosed. The device comprises a tool for sequentially joining segments of the borderwire to perimeter ones of the coils located along a perimeter of the innerspring, apparatus for advancing the mattress innerspring and borderwire toward the tool, a conductive element for sequentially contacting the perimeter ones of the coils, a sensor for detecting contact of the conductive element with the perimeter ones of the coils, and a control responsive to the sensor for actuating the tool.
REFERENCES:
patent: 3573406 (1971-04-01), Neuhoff
patent: 3697710 (1972-10-01), Jarrett
patent: 4461936 (1984-07-01), Kimura et al.
patent: 4724590 (1988-02-01), Langas et al.
patent: 4829643 (1989-05-01), Ayres et al.
Ayres Donald B.
Forsthoff Mark A.
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