Manufacture of agricultural discs

Details Manufacture of agricultural discs Manufacture of agricultural discs

1974-01-22

1976-06-01

Lanham, C. W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

72336, 72340, 172604, B21K 1900

Patent

active

039598632

ABSTRACT:
In order to overcome the limitations on availability of suitable steel strip or bars in widths to suit all diameters of agricultural discs, a method of manufacturing such discs comprises cutting blanks from rolled steel strip or bar having a thickness greater than the thickness of the finished discs and a width less than the diameter of the finished disc, the blanks having a length substantially equal to the diameter of the finished discs, rolling each blank in the direction of its width until that dimension has increased to not less than the diameter of the finished discs, and blanking out from each rolled blank a disc with a diameter not less than the diameter of the finished discs and with a central hole, the cross-rolling of the strip or bar necessary to achieve the required increase in width and reduction in thickness having the beneficial result in affording quality comparable with that of discs formed from cross-rolled plate or sheet.

REFERENCES:
patent: 488514 (1892-12-01), Arnold
patent: 691565 (1902-01-01), Norton
patent: 1007399 (1911-10-01), Spalding
patent: 1924099 (1933-08-01), Bain et al.
patent: 2154534 (1939-04-01), Schuster
patent: 2395184 (1946-02-01), Hume et al.
patent: 2416742 (1947-03-01), Farr
patent: 2814580 (1957-11-01), Hoover

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