Woodworker's clamp

A woodworker's bar clamp comprising:

• an elongate tubular sleeve having a top wall and adjacent side walls;
• a movable jaw and first support means for mounting said movable jaw on the top wall of said sleeve at a mounting location selected from plural mounting locations spaced along the length of said sleeve;
• an elongate slide bar, one end of which is received and supported within said sleeve for back and forth movement relative to said sleeve;
• a fixed jaw and second support means for pivotally securing said fixed jaw to the other end of said slide bar, facing said movable jaw;
• and
• means for maintaining said sleeve at an adjusted position along said slide bar for clamping a work-piece between the fixed and movable jaws with hand-applied pressure.

A woodworker's clamp comprising

• an elongate tubular sleeve having a top wall of inverted "U"-shape and adjacent side walls, and three locations for mounting a movable jaw, each location defined by a pin which extends transversely through said sleeve proximate its lower edge and which projects outwardly from both side walls:
• a flat elongate side bar supported within said sleeve on said transverse pins for back and forth movement relative to said sleeve;
• a fixed jaw and first support means for pivotally securing said fixed jaw to a free end of said slide bar;
• a movable jaw and second support means for releasably mounting said movable jaw at a selected mounting location on said sleeve, wherein said second support means includes a pair of plates each having a hook-shaped cutout at a lower end adapted to engage a respective projection of a transverse pin and a block between said plates and spaced upwardly from the lower end a distance approximately the width of the sleeve side walls and separating said plates by substantially the width of the top wall of said sleeve, said block having a lower surface contoured to substantially match the inverted "U"-shaped contour of the upper wall of the sleeve;
• and
• means for locking said slide bar and said sleeve against relative movement upon clamping a work-piece between said fixed and movable jaws with hand-applied pressure, said means for locking comprising ratchet teeth distributed along said slide bar and pawl means supported on a side wall of said sleeve and arranged to releasably engage said ratchet teeth;
• wherein said first support means includes an integral arm disposed substantially parallel to the longitudinal axis of said slide bar, and means threadably engaging said integral arm and adapted to engage said slide bar and, when engaged, tilts said first support means toward said movable jaw for increasing the clamping pressure between the jaws over that which can be applied by hand pressure alone.