Patent GB-442470-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D7/32
Filed: 1935-02-09
Abstract: 442,470. Slicing-machines. BERKEL & PARNALL'S SLICING MACHINE MANUFACTURING CO., Ltd., Aden Road, Ponders End, Middlesex.-(Maatschappij van Berkel's Patent Naamlooze Vennootschap ; 33, Boexemsingel, Rotterdam, Holland) Feb. 9, 1935, No. 4233. [Class 28 (ii)] A conveyer for a slicing-machine stacking- mechanism comprises an assembly of several side-by-side rotary rolls presenting, throughout the slice-conveyance plane, slice-contacting portions which provide a flat slice-conveying support extending from the slice-taking position to the slice-discharging position. As shown in Fig. 1, the conveyer comprises a number of parallel rolls 27 journalled at their ends in the frame 28, withdrawable pointed pintle bearings 27<1> at one end allowing the rolls to be removed for cleaning &c. Each of the rolls 27 are provided with collars 29, the collars on each roll being staggered with respect to the collars on adjacent rolls. The rolls may be arranged to be rotated by the slice itself as it passes to the conveyer from the knife, or positive driving means may be provided, e.g. the shaft 30 may be rotated intermittently by a belt connecting it to a one way drive pinion engaging with an endless chain which is connected to the reciprocating carriage of the machine, the shaft 30 being. formed as a worm engaging worm wheels at the lower ends of the rolls 27. The slice naturally lies flat against the collars 29 during transit upon them, since the supporting plane is set at a backward inclination (about 30‹ to the vertical). A guide plate 41 is provided at the active side of the conveyer and is slotted to allow the collars 29 to project through. The surface of the plate is provided with a series of wires 43 to prevent the slices from making heavy contact with the flat surface of the plate 41. Alternatively the plate 41 could be provided with horizontal ribs or anti-friction rolls. The plate 41 functions also as a discharge fly, being pivoted on the shaft 30 and actuated by a cam 48, which contacts with a roller 47, and a tension spring 52. The action of the spring 52 is braked by links 57, 57<1>, which slide a block 54 along a rod 55 against the resistance of a spring 58 which bears against an abutment 59 adjustable, to vary the braking action, by a knob 61 on a screwed shaft threaded in the abutment. Instead of the plate 41 being used as a discharge fly, the conveyer together with its supporting frame and the plate 41 may be arranged to swing bodily to discharge the slice. In a modification, Fig. 7, the conveyer comprises a number of horizontally arranged rolls 80 having helical ribs which contact with the slices. The rolls 80 are rotated intermittently by means, associated with the reciprocating carriage, driving a rope or the like passing around pulleys 84 on the rolls 80. The fingers 89 of the discharge fly 88 are arranged between the rolls, the shaft 90, carrying the fly, having arms 91, 92 whereby the fly receives its slicedischarging movement against a suitable brake action. The conveyer structure may be arranged, as in Fig. 1, to swing bodily to act as a discharge fly. The plane of the supporting surfaces of the rolls 80 is vertical, and to retain the slices against the rolls during their transit, a plate 93, Fig. 8, is provided which is hinged to the frame of the conveyer at 94 and is provided with wires, ribs, rolls or the like on its face to reduce frictional resistance to the passing slice. The plate 93 is moved out of the way for each slice-discharging operation by a roller 96 at the top of the fly 88 engaging a cam-like wire 95 on the plate 93. In a modification, the plate 93 and the fly 93 are connected by a link to effect the displacement of the plate during the slice-discharge. According to the Provisional Specification, the conveyer may be an endless traveller such as one or more belts, provided with blunt slice-supporting projections.