Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent
1988-07-19
1990-12-04
Hartman, J. J.
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
81 583, B25B 2308
Patent
active
049744780
ABSTRACT:
A screw driving and gripping tool for holding and tightening the screws on pivoted tools such as scissors shears and the like having a variety of thicknesses. The screw driver and gripping device includes a pair of elongated gripping members which are pivotably connected and each of which has a pair of jaws on one end. One of the jaws is adapted to support tools being tightened and the other of the jaws is adapted to support a screw driving bit for engaging the kerf of the screws on pivoting tools such as scissors, shears and the like. The screw driving bit is supported in a support which is drivingly connected to the screw driver jaw while rachet motion in either direction and for driving the screw driver bit whenever the tool grips a tool whose screw is to be tightened. The screw driving bit projects from the screw driver support jaw a variable distance so that shears scissors or the like of variable thicknesses can be accommodated with the screw driver bit still engaging squarely into the kerf of the screw holding the scissors or shears. Means are provided for adjusting the distance that the screw driver bit projects from the screw driver support means so that the device can accommodate shears of variable thicknesses.
REFERENCES:
patent: 1191873 (1916-07-01), Cressy et al.
patent: 1795054 (1931-03-01), Summers
patent: 1802666 (1931-04-01), Mueller
patent: 2005723 (1935-06-01), Munn
patent: 2033892 (1936-03-01), Parvin
patent: 2079863 (1937-05-01), Koon
patent: 2352917 (1944-07-01), Scott
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