GB830593A - Scissors cutters - Google Patents

Abstract

830,593. Scissors. FRITZINGER, G. H. May 27, 1958, No. 16910/58. Class 30 [Also in Group VIII] A scissors cutter comprises a pair of pivotally interconnected frame members, transverse blades mounted on portions of the frame members remote from the pivot of the latter and having cutting edges engageable with each other as the frame members are turned towards one another, at least one of said cutting edges being inclined to the direction of relative movement between the blades, one of the blades being rigidly secured to its frame member and the other blade being pivoted to its frame member on an axis substantially parallel to the pivot axis of the frame members, means for biasing said other blade about its pivot axis to provide contact pressure between the blades when they are engaged with each other, the cutting edges of the blades being inclined relative to each other as viewed in the direction of relative movement between the blades to provide a progressive point contact between the cutting edges with retraction of the pivoted blade about its pivot axis against the force of said biasing means as the blades are progressively engaged. As shown, the scissors cutter is adapted to be held in the palm of the hand and comprises lower and upper overlying frame members 40, 41 which are pivotally interconnected by a pivot rod 42 carried by a bracket 43 on the frame member 40. This bracket is secured to the frame member 40 at one side only to provide a through space 44 which is open at one side for sidewise feed of strip material between the frame members. A blade 49 is fixedly mounted on the frame member 40 and a blade 50 is pivoted to the frame member 41 on a cross pin 51. The blade 50 engages the inner side of the blade 49 under the action of a torsion spring 54 surrounding the pin 51. The frame members are biased open by a U-shaped spring 59 interposed between the frame member 41 and the cross arm 46 of the bracket 43, the open position being defined by abutment of an end flange 60 of the frame member 41 against the bracket arm 46. In a modification, Figs. 12 to 14 (not shown), the pivot between the frame members is offset sidewise relatively to the blades to provide a through space at right angles to the blades for feed of material to be cut.