Abstract: A multipurpose woodworker's clamping and spreading apparatus consisting of an elongated support bar component and a pair of elongated crossbar components held together by the respective vertically inclined and horizontally inclined sleeving elements of each of a pair of a two-way adjustable bar holder components with each crossbar holding, as well, one of each of a pair of adjustable workholder components via the horizontally inclined sleeving member of each and with each workholder component featuring an externally threaded holding bolt threadably held within the bolt holder thereof welded to the sleeving member and with the ball shaped end portion of a small rod extension from the base of the bolt, rotatably holding a shoeholder element, in turn holding a shoe element, the sleeving member portion of which features sleeving for such holding and the base member portion of which serves to hold work for clamping or spreading.

Abstract: A multipurpose woodworker's clamping and spreading apparatus consisting of an elongated support bar component and a pair of elongated crossbar components held together by the respective vertically inclined and horizontally inclined sleeving elements of each of a pair of a two-way adjustable bar holder components with each crossbar holding, as well, one of each of a pair of adjustable workholder components via the horizontally inclined sleeving member of each and with each workholder component featuring an externally threaded holding bolt threadably held within the bolt holder thereof welded to the sleeving member and with the ball shaped end portion of a small rod extension from the base of the bolt, rotatably holding a shoeholder element, in turn holding a shoe element, the sleeving member portion of which features sleeving for such holding and the base member portion of which serves to hold work for clamping or spreading.

Abstract: A screw device with an elongated shank, a self-tapping cutter located thereon on and with a cutting head within which there are two equivalent and opposing grooves the angularity of which with reference to horizontal is the same and equivalent to the angular pitch of the threading about the shank and with serrated edging about the bottom side of the cutting head and in the top side of the cutting head there being found a closed hole.