Patent GB-273372-A (GB)
Title: Improvements in and relating to machines for slicing meat and other substances
IPC: B26D7/02
Filed: 1926-03-22
Abstract: 273,372. Berkel & Parnall's Slicing Machine Manufacturing Co., Ltd., and Thomas, H. March 22, 1926. Cutting slices in succession.-In a slicing- machine, the substancecarrying device is supported and positioned, at one side only, tu a member having an operative connection with the feed mechanism, and is removable therefrom by a simple lifting movement, without the aid of tools. The said member is preferably a slidable element of the guide mechanism serving to guide the substancecarrying device across the under table or reciprocating carriage. The substance-carrying device may be a pin-plate or table, a display tray, or an end piece holder. Narrow guide mechanism such as that described in Specifications 22.5,342, 225,343, 225,344, 225,345, 228,457, may be used in which case the usual feed table may be dispensed with. The narrow-guide mechanism, may consist of a bar, e.g. the feed screw, and a. sleeve or runner slidable thereon. Means, e.g. an extension of the sleeve which bears against the under carriage, are provided for preventing angular movement of the sleeve. As shown in Figs. 1, 3 and 4, the display tray D is removably positioned on the runner 2, 3 of the narrow guide mechanism, the stem portion 2 of the runner having a groove engaged, by a feather 4 on the stationary guide member 1. The tray D is formed with a stepped side wall 14, 15, the top flange 14 being recessed at 14<1> above a bracket 9, which carries the lever 7 for releasing the feed nut H, and having opening 16, shaped as shown in Fig. 3, to engage under the knobs 13 of pillars 12 secured to the portion 3 of the runner. The wall 15 of the tray D rests against the wall 3<1> of the runner 2, 3. The feed nut H is housed in a recess 5, is pressed by a spring 6 into engagement with the feed screw B, and is disengaged by the co-operation of the cam part 10 of the lever 7, Fig. 4, with a roller 11 carried on the nut 11. Stops 9<11> limit the movement of the lever 7. The display tray carries the clamping-means E, F, G, and is removed from the machine without disturbing the feed mechanism by lifting the free side of the tray, the large portions of the holes 16 then coming under the knobs 13 and allowing the tray to be lifted. In a modification, Fig. 6, the feed nut H is slidable in a recess formed between the head 3 of the runner and a bracket 21 screwed thereto, and is operated by a cranked lever 23 pivoted to the bracket. The tray D is supported by a ledge 27 projecting from the runner and engaging the lower corner of the tray. The pillars 26 which engage the holes in the top flange 14, may have collars 26<1> in place, of, or in addition to, the ledge 27. Cam means may be provided to move one of the guide members laterally to allow the runner and feed nut to be removed for cleaning. In another modification, Fig. 9, the display tray 1) is supported by a feed table which may be in the form of an open frame tu permit the tray tu rest therein and thereby minimise the sagging of the overhanging meat. The frame comprises side members J', and a member connecting them at the end remote from the knife. The frame slides in guides L<1>, one guide being resiliently mounted on the undertable A and urged against the frame by springs L<3>. The tray D is supported as in the former constructions, the side J<1> of the frame functioning in the same manner as the head 3 of the runner. A supporting-ledge 37 is secured to the side J'. The pillars 13, Figs. 1, 3; 26, Fig. 6, and 30, Fig. 9, may be tapered from a small diameter at the bases to a large diameter at the tops; or may be tapered outwardly towards the ends from an intermediate part, or may be notched to engage the tray, or provided with shoulders or collars The substance supporting device may be supported, at the side remote from the feed screw, by rollers. may be provided to prevent the substance-carrying member from being accidentally canted upwards at its unsupported side, e.g. a spring-pressed plunger mounted on the member engaging a stop plate when so displaced. An end piece holder may be supported and positioned at one side on a pillar on a feed member.