Machine vice with force amplifier

Details Machine vice with force amplifier Machine vice with force amplifier

1988-09-30

1990-02-13

Hartman, Judy J.

Work holders

Relatively movable jaws

Means to actuate jaw

269221, B25B 110

Patent

active

048999997

ABSTRACT:
A machine vice with force amplifier comprises a base member (1) with an upwardly open, elongated recess (2), a fixed jaw (4) arranged at one end (1a), which is unitary with the base member (1). A movable jaw (5) is slidably mounted on the base member (1) and bears on its under side a unitary projection extending into the recess (2), with a spindle nut (7). A tightening device (8, 9) is arranged in the recess (2), consisting of a screw spindle (8) with force amplifier engaging in the spindle nut (7), which are adapted to be driven by a common handle (15). On the other end (1a) of the base member (1) a reaction plate (11) is fixed by a plurality of screws (12) on a fixing surface (14) ewxtending perpendicular to the spindle axis (A), against which plate the tightening device (8,9) abuts. The base member (1) comprises a second fixing surface ( 14a) for the reaction plate (11) at its one end (1a) and corresponding threaded bores (13a) for its screws (12).

REFERENCES:
patent: 2274428 (1942-02-01), Odin
patent: 3902707 (1975-09-01), Preisenhammer

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