Work holders – Relatively movable jaws – With means to fasten holder to support
Patent
1986-05-14
1987-10-06
Schmidt, Frederick R.
Work holders
Relatively movable jaws
With means to fasten holder to support
269208, 269247, B25B 110
Patent
active
046978011
ABSTRACT:
A forwardly opening parallel vice has a housing (1) which can be fixed to a workbench (3) and which carries the stationary clamping jaw (2) and which is provided with a quadrangular guide structure. Displaceable in the guide structure is a hollow slider which is supported with a plurality of guide surfaces (13) on the guide tracks (11) of the guide structure and which carries the movable clamping jaw (14). Of a screw spindle-nut assembly (15-17) which is provided in the slider (12), one part (15, 16) is mounted rotatably and axially immovably in the slider (12) while the other part (17) is fixed to the housing (1). The slider (12) is of square cross-section and the axis (A) of the screw spindle is arranged precisely at the center of the square cross-section. In that arrangement the guide surfaces (13) which are provided at the four sides of the slider (12) and the guide tracks (11) of the housing (1), which co-operate with said guide surfaces, form tangents to a common circle (k) whose centerpoint is the axis (A) of the screw spindle.
REFERENCES:
patent: 1265218 (1918-07-01), Long
patent: 1538500 (1925-05-01), Aubard
patent: 1799474 (1931-04-01), McChesney
patent: 3675916 (1972-07-01), Kartasuk et al.
patent: 4330113 (1982-05-01), Ferdinand et al.
patent: 4415149 (1983-11-01), Rees
Gressel AG
Schad Steven P.
Schmidt Frederick R.
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