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US 4,262,588 AGranted
Scissor press
OwnerWilliam D. McDonaldinventor
Life of this patent
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OwnerWilliam D. McDonaldinventor
Estimating the term…
A press for applying nailing plates across joints of wooden trusses and for other like usage is disclosed. A suspension harness for the press is adapted to be carried by an overhead universally movable support. The lower jaw member of the press is rockably mounted on the suspension harness with adjustment means provided to level the work-engaging jaw plates. An operator-controllable power cylinder is connected between rear arm extensions of the press jaws. The work-engaging jaw plate of the upper jaw is rockable on a transverse axis relative to adjustable plate stops. The lower jaw work-engaging plate is finely adjustable to enable the press to apply nailing plates with even pressure and with the proper degree of penetration into the work pieces and to accommodate variations in thickness of work pieces. Spring loaded guards on the lower jaw working-engaging plate prevent accidental displacement of nailing plates prior to application. Manipulating handles on the suspension harness and power cylinder enable guiding of the press by the operator in all directions.
A press for installing nailing plates to truss lumber joints and the like comprising a pair of opposing jaws which are pivotally interconnected between their ends for relative swinging movement toward and away from each other, a suspension harness carrying said jaws and adapted for connection with an overhead movable support, a power actuator for the jaws interconnecting rear extensions thereof on one side of the pivot axis of the jaws, an upper jaw plate rockably mounted on the uppermost of the jaws forwardly of the jaw pivot axis and with the rocker axis of the upper jaw plate parallel to said jaw pivot axis, adjustable stop means for the upper jaw plate on said uppermost jaw and limiting rocking movement of the upper jaw plate in one direction, a lower jaw plate on the lowermost jaw in opposing relationship to the upper jaw plate, and means to finely adjust the level and the angle of the lower jaw plate relative to the upper jaw plate.
Dependencies are inferred from the claim text.