Patent GB-509149-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D7/01
Filed: 1938-01-11
Abstract: 509,149. Slicing-machines. BERKEL & PARNALL'S SLICING MACHINE MANUFACTURING CO., Ltd., and THOMAS, H. Jan. 11, 1938, No. 847. [Class 28 (ii)] A slicing-machine having a disc knife and a substance-carrier including an inclined or inclinable substance-support, between which carrier and the knife a to-and-fro slicing motion is effected, is provided with a skin-support or a skin-cutter, or a combination thereof, which is movable by the inclination of the substancesupport to retain a predetermined positional relationship with the said support and the knife. As shown in Fig. 2, the skin support 25 is carried by an arcuate bracket 29 secured to the plate 26 which masks the centre of the knife 21 and is journalled in a stationary sleeve on which the knife is journalled. The attachment 30 permits the support 25 to be adjusted to suit the diameter of the knife. The skin element, or its bracket, is provided with a roller or pin 31 which engages in a groove track 32 arranged at the same inclination as the surface of the substance-support 23, so that during the to-and-fro slicing motion, the support 25 rises and falls, around the axis of the knife, and remains approximately flush with the substance-support. The extreme positions of the members 25, 29, 31 are shown in full and dotted lines. The support 25 may be similarly carried from a pivoted slice-deflecting plate instead of from a mask-plate. The substance support 23 may be pivotally adjustable on its carriage, about an axis at right angles to the slicing plane. In a modification, the skinsupport is slidably mounted on a guide post carried by the machine base, a spring on the guide post maintaining a roller on the skinsupport against an inclined guide rail on the underside of the correspondingly inclined substance-support. The substance-support, in the above constructions, may have a section of flattened V-form, in which case the guide path for the roller is of corresponding V-form so that the skin support falls and rises during the slicing - stroke. The skin - support may be notched to receive the edge of the knife. In a further modification, Fig. 9, the substancesupport 23 is pivoted on an axis parallel to the slicing-plane, so that, although it is normally used in horizontal position, it may be raised into an inclined setting, or into any of a range of inclined settings, or angularly displaced stepby-step by appropriate mechanism, to cut slices on the slant or at varying obliquity. The skin-support is in two parts, one part 251 being slidable on rods 43, 44 to a position determined by a cam-shaped projection 46 which is urged by a spring 47 against a rail 32 on the underside of the substance-support, which rail is lowered as the substance-support is pivoted upwards. The other part 25<2> embodies the main skin-supporting face 48 which is curved in shape to suit the substance when disposed at an inclination or horizontally. The part 25<2> is pivoted at 49 on the first part 25<1>, a spring 52 serving to prevent looseness in the pivot connection. A fixed pin 51 engages an arcuate slot 50 in the part 25<2>, the slot being so shaped that as the substance-support is swung up and the edge thereof adjacent to the knife approaches the cutting plane, the face 48 is correspondingly moved towards the cutting plane. In a simplification of the last modification, a single-piece skin-support is arranged only to rise and fall with the edge of the substance-support.