Dunnage bar and method of making it

Details Dunnage bar and method of making it Dunnage bar and method of making it

1979-02-05

1980-12-09

Hunt, Brooks H.

Stock material or miscellaneous articles

All metal or with adjacent metals

Workpiece with longitudinal passageway or stopweld material

428595, 428598, 428603, 211162, A47F 500

Patent

active

042385504

ABSTRACT:
A dunnage bar constructed from a single strip of sheet metal formed into a tubular, rectangular configuration having a working or load engaging face and an oppositely disposed base portion connected by a pair of parallel sides. The working face has a pair of walls which extend toward each other from the sides, are separated by a longitudinal slot, and are connected by a transverse web located inwardly of the slot. Each wall is composed of a double thickness of metal, each of the sides is a single thickness of metal, and the base portion also has double metal thicknesses which are interlocked with the sides along the edges of the base portion. The method of making the dunnage bar employs a plurality of stands of rolls through which the sheet metal strip is passed and is progressively formed from its center outward into the above-described configuration.

REFERENCES:
patent: 931164 (1909-08-01), Vining
patent: 1054105 (1913-02-01), Galbally
patent: 2055771 (1936-09-01), McLaughlin
patent: 2791017 (1957-05-01), Mulka

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