Brushing – scrubbing – and general cleaning
Patent
1976-07-19
1978-09-19
Moon, Charlie T.
Brushing, scrubbing, and general cleaning
29509, 29522R, F16B 3928, B21D 3900, B23P 1102
Patent
active
041146700
ABSTRACT:
At least one screw means provided with an angular stepped neck by certain distance from the bearing surface of a screw head thereof is fastened firmly onto a metal plate having at least one opening of a shape corresponding to that of the stepped neck through the opening at the surface of a receiving means having at least one hole bored therethrough to insert a screw body of the screw means thereinto by pressing the stepped neck and the receiving means against each other to cause the stepped neck and the opening to be deformed plastically so that the metal plate is tightly clamped between the deformed stepped neck and the screw head to form the fastened assembly of the metal plate and the screw means.
When fastening a plurality of screw means onto the metal plate, a receiving means having a plurality of holes corresponding to the screw bodies respectively is used for upsetting operation. The holes are constructed so that the axes of the holes adjacent to each other are in one plane and are parallel to fasten the plural screw means onto the metal plate regularly and firmly at a time. The fastened assembly is detached from the receiving means by tapping and pushing up the heads of the screw bodies with a knockout means.
An apparatus for fastening the screw means onto the metal plate and detaching the fastened assembly therefrom comprises a vertically movable pressing means for applying force to the stepped necks, a receiving means positioned under the pressing means for fastening together the both components and a knockout means positioned under the receiving means for detaching the fastened assembly from the receiving means.
REFERENCES:
patent: 1591057 (1926-07-01), Schwartz
patent: 1759339 (1930-05-01), Andren
patent: 1872616 (1932-08-01), Andren
patent: 2007179 (1935-07-01), Bullis
patent: 2129583 (1938-09-01), Johansson
patent: 2276050 (1942-03-01), Leighton
patent: 3367685 (1968-02-01), Church et al.
patent: 3381362 (1968-05-01), Church et al.
Akashi Tetsuya
Nikawa Akio
Moon Charlie T.
Topura Co., Ltd. (Kabushiki Kaisha Tohpura)
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