Metal deforming – With means to actuate both elements of tool-couple – Handle actuated
Patent
1999-05-19
2000-10-10
Crane, Daniel C.
Metal deforming
With means to actuate both elements of tool-couple
Handle actuated
81416, 81385, 81387, 30192, B21D 706
Patent
active
061289434
ABSTRACT:
The present invention is an adjustment mechanism for both hand and production tools of any capacity. An eccentric pin mechanism provides the pivot between two handles or other load transferring members. The rotation of the pin moves the two members closer or farther apart, indirectly controlling the final position of the blades or jaws. This adjustment can be used to compensate for wear or to provide adjustment for a specific use. The eccentric pin is locked into position by means of a pressure pin mechanism. For light duty tools, this pressure pin mechanism would consist of a spring loaded pin which resists rotation of the eccentric pin during normal operation of the tool. The spring loaded pin would allow rotation of the eccentric pin when a tool is used to rotate it. For heavy duty applications, the pressure pin mechanism would consist of a solid set screw. This set screw would be loosened before rotation of the eccentric pin, and then tightened after adjustment to prevent rotation of the pin during normal use. Rotation of the eccentric pin can be performed with various hand tools. A handwheel or lever could be used for certain applications which would require rapid adjustment of the tool. This handwheel or lever would allow adjustment of the eccentric pin without the use of tools. In this situation, a second eccentric pin could be located at another pivot point to provide additional adjustment.
REFERENCES:
patent: 584191 (1897-06-01), Porter
patent: 2926556 (1960-03-01), Dupre
patent: 5012666 (1991-05-01), Chen
patent: 5842371 (1998-12-01), Liaw
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