Method and apparatus for forming strings of pocketed springs

Metal working – Upholstered article making – Method

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Details

29430, 29451, 29779, 53114, B68G 700

Patent

active

057491330

ABSTRACT:
Methods and apparatus are provided for forming strings of springs enclosed within pockets having flat overlapping side seams avoiding problems with false loft in mattress construction.

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patent: 2113457 (1938-04-01), Zeier
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patent: 2983236 (1961-05-01), Thompson
patent: 3668816 (1972-06-01), Thompson
patent: 4234983 (1980-11-01), Stumpf
patent: 4439977 (1984-04-01), Stumpf
patent: 4986518 (1991-01-01), Stumpf

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