Vise with interchangeable jaw members

For use with a vise for holding a workpiece in compression, said vise having a vise body, the body including a base, a support housing mounted on the base, a fixed jaw on the support housing, a movable jaw, and a mechanism for moving the movable jaw in facing relation to the fixed jaw, a workpiece holding attachment comprising:

• a pair of support blocks one on the fixed jaw and one on the movable jaw, each of said support blocks having a pair of vertically extending ribs on the longitudinally opposed sides thereof and a longitudinally extending horizontal ledge thereon, and further having a generally flat front vertical surface extending between said pair of ribs, said ribs defining a corresponding pair of laterally outwardly open and vertically oriented slots disposed in positions spaced rearwardly from said front vertical surface by the thickness of said ribs;
• and
• a pair of interchangeable jaw members, each of said jaw members having a front working surface and a generally flat rear vertical surface, and a pair of generally L-shaped locking arms at longitudinally opposed sides of said rear vertical surface, said locking arms each having a first leg portion extending generally rearwardly from said rear vertical surface for a distance greater than the thickness of said ribs on said support blocks and a second leg portion extending generally laterally inwardly and having a size and shape relative to the size and shape of said slots on said support block for loose fitting locking reception of said locking arms of each of said jaw members with respect to said pair of vertically extending ribs on one of said support blocks, so that each of said interchangeable jaw members may be engaged to one of said support blocks to fit loosely thereon and moved downwardly by sliding until the sliding is stopped by contact of said interchangeable jaw member with said longitudinally extending horizontal ledge, whereby said front vertical surface of said support block and said rear vertical surface of said jaw member are placed in a facing abutting relation when said front vertical surface of said jaw member is subjected to a rearwardly directed compressive force.

For use with a vise having jaws for holding a workpiece in compression, wherein at least one jaw has a support block thereon, said support block having a generally flat front vertical surface extending between a pair of vertically extending ribs at longitudinally opposing sides thereof defining a pair of laterally outwardly open vertical slots disposed in positions spaced rearwardly from said front surface by the thickness of the ribs, and a longitudinally extending horizontal ledge along the lower end of the front surface, an interchangeable jaw member, comprising:

• a plate having a front working surface thereon and a generally flat rear vertical surface, said plate further having a pair of generally L-shaped locking arms at longitudinally opposing ends of said rear surface, said locking arms each having a first leg portion extending generally rearwardly from said rear vertical surface for a distance greater than the thickness of the ribs on the support block and a second leg portion extending generally laterally inwardly and having a size and shape relative to the slots on the support block for loose fitting locking reception of said arms into the slots defined by the vertically extending ribs, whereby the plate may be loosely engaged over the ribs and slid downwardly until the downward movement is stopped by contact against the horizontal ledge with the rear surface of said plate disposed for facing abutting relation with the front surface of the support block when said front working surface is subjected to a rearwardly directed compressive force.