Patent GB-295543-A (GB)
Title: Improvements in or relating to slicing machines
IPC: B26D7/02
Filed: 1928-01-09
Abstract: 295,543. Berkel, J. C. van. Jan. 9, 1928. Cutting slices in succession.-In a slicing- machine provided with a clamp arranged at or near the front of a substance support mounted on a carriage adapted to be moved recurrently past a knife adapted to be rotated about a stationary axis, means are provided for engaging and supporting one or both sides of the substance behind the clamp so as to prevent distortion of the sub stance during slicing, such means being freely adjustable towards the substance but automatically locked against return movement. As shown in Figs. 1, 3, wherein the clamp comprises a bar 2 slidable on a guide 3 upstanding from the support 1, the bar being held frictionally in adjusted position by a spring-pressed pawl 4, one side of the substance is adapted to abut against a flange 1<1> upstanding from the side edge of the support posts 8 depending from a bar 7 pivotally mounted on the end of a member 6, the other end of which is pivoted on the free end of the bar 2, the member 6 being held in adjusted position against the action of a spring 12 by a spring-pressed pawl 11 carried by the bar 2 and co-operating with a ratchet wheel 10 carried by the member 6. The latter may be released by depressing an extension 11<1> of the pawl 11. A plain portion 14 on the wheel 10 prevents the bar 7 from being moved beyond the front edge 1<11> of the support, so that it cannot foul the knife. In the form shown in Fig. 4, the sides of the substance are adapted to be gripped by two posts 27 slidable in a guideway formed by a plate 24 secured to the rear end of the support 20, a pawl 28 rigidly secured to the lower end of each post being adapted to engage ratchet teeth 26 formed on the lower wall of a slot 25 formed in the plate 24. The weight of the posts 27 normally holds the pawls in engagement with the teeth 26, so preventing outward movement of the posts while allowing them to be pushed inwards. The pawls can be removed from the teeth to allow outward movement of the posts by tilting the latter. In another form, a pair of upstanding posts are slidably mounted on a rod arranged at the rear end of the support, the holes in the posts being slightly larger than the rod and having sharp edges which, owing to the weight of the posts, assisted by springs, are caused to bite into the rod so as normally to prevent outward movement of the posts. As shown in Figs. 10, 11, a pair of upstanding posts 50, provided with lateral extensions 50<1>, are fulcrumed on sleeves 51 which are slidable along guides 52 secured to the rear end of the support 53. The sleeves 51 have smooth bores fitting a rod 54 journaled at the rear end of the support and having right- and left-handed square threads. The toe of each post engages an opening in a stirrup 59 accommodated in a recess in the sleeve, the rod 54 passing through openings 60 in the stirrups 59. The arrangement is such that the weight of the posts normally causes the stirrups to engage between the threads so as to lock the posts, but, by tilting the latter inwards, the stirrups are moved clear of the threads so that the posts can be slid across the support. Tht rod 54 may be rotated by means of a handle 61 so as to adjust the posts. As shown in Figs. 13, 14, one side of the substance is adapted to abut against a flange 76<1> upstanding from one side edge of the support 76, while the other side is adapted to be engaged by posts 71 depending from a bar 72 pivoted to the end of an arm 73, the other end of the latter being secured to a vertical pin 75 journaled in a bracket 74 secured to the rear end of the support. A pinion 80 secured to the pin 75 meshes with a rack 81 formed on the end of a bar 82 slidably mounted at the rear of the support. By pulling the rod 82 by means of a knob 85, the posts may be moved towards the substance, but retrograde movement is prevented by a roller 86 wedged by a spring 87 against an inclined face 88. The roller may be released by raising a lever 91.