Patent GB-511703-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D7/06
Filed: 1938-02-24
Abstract: 511,703. Slicing machines. BERKEL & PARNALL'S SLICING MACHINE MANUFACTURING CO., Ltd., and THOMAS, H. Feb. 24, 1938, No. 5844. [Class 28 (ii)] In a slicing-machine, an auxiliary substanceholder 23, which is inactive when the usual substance-holder, e.g., a last-slice holder is in use, is mounted to lie normally below the feed-table 15 and is mounted on a frame 25-28 pivotally attached to the carriage 10 by pins 29. The holder 23 is provided with substanceengaging prongs 24 and is slidable on guide bars 26, 27 forming part of the frame. The bar 27 carries a roller 30 which co-operates with the face 32 of a ramp 31 which is detachably mounted when the feed-table 15 is removed, on a carrier 33, movable along guides 40 parallel to the direction of feed. The ramp is attached to the carrier by pihs 34 thereon engaging inclined slots 35 in the carrier, disengagement being prevented by a hooked latch 36 provided with a handle 37. One guide 40 is formed as a groove in the carriage 10 and receives rollers on the carrier. Means are provided whereby the carrier may be withdrawn step-by-step from the cutting-plane to allow the frame 25-28 to drop from a tilted position to a horizontal position ; or whereby the carrier may be freed for manual setting along its guides ; or whereby it is locked to the carriage in any desired setting. The said means comprise a hand lever 47 on the carrier 33, the end of the lever engaging a slide-block 48, on one of the guides 40, having a pin and slot connection 49 with a rack 41 connected to the carrier 33 by pins 42 engaging inclined slots 43 in the rack. Longitudinal movement of the rack, effected by operating the lever 47, thus raises and lowers it for engagement with or disengagement from a pinion 44, a spring 50 tending always to free the rack from the pinion. In position I of the lever 47. the rack and pinion are engaged, in position II they are disengaged, and in position 111 a distortional effect of the rack, slide-block, and pin and slot connection 49 is set up which locks the carrier 33 to the reciprocating carriage. A notched locking-lever 51 holds the lever 47 in position I, during the feed movement, until it is released by contact with a member on the tilting frame, the lever 47 being then forced into position II by the spring 50. The rack 41 is actuated by a pinion 45, co-axial with the pinion 44, engaging a rack 41 on the carriage 10. The feed-means for the auxiliary holder 23 comprises a pair of side-by-side pulleys 53, 54 co-axial with the pins 29, a pair of rear pulleys 55, 56, the pulley 55 being on the carriage 10 and the pulley 56 on the frame 25-28. An endless cable 57 is led around the four pulleys and is attached permanently at 58 to the holder 23. The part 13 receives normal feed-movements from the feed-screw 16 and is provided with a pivoted latch 64 which engages a collar 60 secured to the cable, which is therebyentrained to impart corresponding feed-movements to the holder 23. The latch 64 has a heel 63 which is depressed by engagement with the feed-table 15 when the latter is placed upon the machine, the feed-connection for the holder 23 being thus disconnected. The advance face of the latch hook is inclined so that, if incorrectly registered, the latch will move in the feed motion into automatic engagement with the collar. The rack mechanism may be modified, to move the ramp towards the slicing-plane, by the insertion of an intermediate gear wheel, and the operative face of the ramp may be at the back. Specifications 511,704, 511,705 and 511,719 are referred to.