Patent GB-283987-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D1/16
Filed: 1926-09-23
Abstract: 283,987. Fitzpatrick, H. D., (Maatschappij tot Vervaardiging van Snijmachines Volgens van Berkel's Patent en van Andere Werktuigen). Sept. 23, 1926. Cutting slices in succession.-In a slicing- machine, a skin-support is arranged to move, during the working of the machine, to preserve the requisite relationship with the cutting-edge of the knife, and, at the same time, to maintain its upper surface substantially flush with the substance supporting surface of the machine. As shown in Fig. 1, the invention is applied to a swinging disc-knife machine, the arm 3 being pivoted to the stationary frame 1 and containing the sprocket and chain driving-gear for the knife. The skin support 11 is slidahle on guide rods, one rod 12 being of circular section, the other, of rectangular section, being engaged by a forked portion of the support. The arm 3 is extended at 18 to engage, by a pin 19 and slot 20, a lever 15 pivoted at 16 to the frame 1. The lever 15 is coupled to the support of a link 17 so that the support is reciprocated along the guide rods as the knife oscillates across the feed table. In a modification, the lever 15 has a cam slot which is engaged by a pin on the arm 3. In another modification, the meat-supporting table is troughshaped or arcuate and the skin support is correspondingly curved and is secured directly on the arm 3. The support follows an arcuate path substantially at the level of the meat supporting surface. In Fig. 6, the invention is applied to a reciprocating disc knife machine of the type wherein the knife is guided along a slotted rack bar 33, the cutting stroke and rotation of the knife being effected by rotating the crank handle 37 and the idle stroke being effected by a direct backward pull on the handle 37. The meat is held by a clamp 41 and the skin support is reciprocable along a guide 43 by a bracket 44 pivoted on the spindle 37<a>. In the modification shown in Fig. 7, the invention is applied to the machine described in Specification 247,179. A T-sectioned slot 50 in the side of the undertable 51 forms a guide for rollers 52 on the skinsupport 53 which has a slotted extension 54 engaged by a pin 56 on a bracket 57 secured to the knife bracket. 'The skin-supports may be notched to extend on both sides of the knife edge. One of the Provisional Specifications describes further modifications. In one, applied to a swinging arm machine, the skin support slides in a guideway in the base and is provided with a projection, which may be a roller, in the path of an extension of the swinging arm too skin support being thereby moved by the arm in advance of the knife. The return is effected by a spring. Alternatively the spring may be dispensed with by arranging the extension of the swinging arm to pass through a slotted extension of the skin support. In other arrangements applied to swinging arm machines the skin support is connected by duplex cables or chains to a drum rotated by the swinging arm, the cable being led around pulleys to pull the support in both directions; or a single chain or cable is used, the return being effected by a spring; or the support is engaged with a screwed spindle driven from the swinging arm and forming a support for the skin support. In a modification applied to a reciprocating disc knife machine, the skin support slides on a guide rail of polygonal cross section.