Method of assembling coil springs

Details Method of assembling coil springs Method of assembling coil springs

1977-06-30

1978-11-07

Combs, E. M.

Wireworking

Fabric making

Link and perforated plates

140 924, B21F 2716

Patent

active

041240413

ABSTRACT:
A coil spring assembly having increased firmness in a preselected area of the assembly through use of a novel spring connector structure and method. The increased firmness is provided by, during fabrication, overlapping joint segments of a pair of adjacent coil springs' top loops, positioning a levelizer wire across the overlapped joint so formed, deflecting at least one of the overlapped joint segments out of its normal arcuate attitude toward a linear attitude, and wrapping a helical lacing wire around the overlapped joint segments and levelizer wire in a sufficiently tight manner to prevent the deflected joint segment from returning fully to its normal arcuate attitude, thereby maintaining the spring joint so established in a prestressed state. Preferably, this structure and method employs a single levelizer wire and a single lacing wire to connect adjacent springs in adjacent parallel rows from one end of the rows to the other.

REFERENCES:
patent: 1881672 (1932-10-01), Kirchner
patent: 1895429 (1933-01-01), Foster
patent: 2120093 (1938-06-01), Foster
patent: 2265426 (1941-12-01), Foster
patent: 2609865 (1952-09-01), Horton et al.
patent: 2644174 (1953-07-01), Hood

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