Mattress making machinery

Details Mattress making machinery Mattress making machinery

1974-12-30

1977-03-29

Lanham, C.W.

Wireworking

Fabric making

Link and perforated plates

140 927, 140 9294, B21F 2700, B21F 4516

Patent

active

040143716

ABSTRACT:
This invention is concerned with manufacture of spring interior units using known machinery for the manufacture of hour-glass shaped spring members wherein a plurality of the hour-glass shaped spring members are conveyed to a locality whereat a plurality of said hour-glass shaped spring members are displaced in a form of a row located adjacent to another row of springs whence the two rows of springs are joined together at both their end convolutions and the process repeated until a spring interior unit with a predetermined number of rows of springs is formed automatically.

REFERENCES:
patent: 2351659 (1944-06-01), Bronstein et al.
patent: 2388106 (1945-10-01), Woller
patent: 2630145 (1953-03-01), Stevens
patent: 3585700 (1971-06-01), Jansson
patent: 3774652 (1973-11-01), Sturm

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