Patent GB-409723-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D7/06
Filed: 1932-11-04
Abstract: 409,723. Slicing - machines. MAATSCHAPPIJ VAN BERKEL'S PATENT NAAMLOOZE VENNOOTSCHAP, and BERKEL, W. A. VAN, 33, Boezemsingel, Rotterdam, Holland. Nov. 4, 1932, Nos. 31103/32 and 15565/33. [Class 28 (ii).] In a slicing-machine, the substance-engager (pusher and /or clamp) has a displaceable connection with the feed means whereby the range of feed is increased. In one construction, the substance engager is formed with prongs on both faces and on top and bottom edges, and is pivoted to a double sleeve member, vertically slidable on two uprights, so as to swing bodily in a curved path through an angle of 180‹, the substance-engager being locked by a spring stop at each end of the curved path. The substance-engager thus may occupy a position close to or remote from the cutting plane to suit the length of the article to be sliced. In a modification, Fig. 4, the substance-engager 50 has spikes on one face and on the bottom edge only, and is mounted on parallel links 52, 53 whereby it may be swung from the full line position to the dotted line position, locking- means holding the engager in either position. The links 52, 53 are pivoted to a double sleeve 55 vertically adjustable on the posts 34. In Fig. 6, the engager 60 is rigid with a member 61 having a hole 69 to engage one or other of the pins 69<1>, 692 on the feed member 62, and a slot 68 for engagement with the corresponding clamping-screw and nut 68<1>, 68<2> carried by the feed member 62. The member 60, 61 can thus be disengaged from the remote full-line position and re-connected to the feed member 62 by the pin and nut 69<2>, 68<2> in the dotted line position which is relatively near the cutting plane. In a modification, the engager 60 is pivoted to a link pivoted to the member 61 whereby the engager can be used as a clamp as well as a pusher. The above-described constructions are particularly applicable to pushpull machines, wherein the feed is manual, or is effected by a spring or weight. In Fig. 10, the feed carriage 81 of an automatic feed machine is detachably connected to a feed member 82 which carries a feed nut engageable with or disengageable from the feed screw 86 in known manner. The detachable connection is effected by one of a number of arms 87, on a shaft 88 carrying a handle 89, engaging a recess 90 in the member 82. When the limit of feed permitted by the screw 86 is reached, the feed nut is raised, the arm 87 is disengaged from the recess 90, and the feed member 82 is slid along its guides and the screw 86 to be locked by the engagement of the other arm 87 with the recess 90. The shaft 88 carries cams which lock the feed carriage 81 against displacement when the arm 87 are both disengaged from the recess 90. There may be one arm 87 only on the shaft 88, engageable with one of a series of recesses 90. In the modification shown in Fig. 12, two feed nuts 101, 102 are provided. The lifting dog 108 for the nut 101 is fast on the shaft 109 whilst the lifting dog 112 for the nut 102 is loose on the shaft. A turnable cam-faced adjusting member 114 bears on ball ended sliding rods 111, 113, the rod 111 bearing on an arm 110 fast on the shaft 109 and the rod 113 bearing on the dog 112. The feed nuts are pressed towards the feed screw by springs (not shown in Fig. 12), and, according to the position of the member 114, one or the other of the feed nuts is raised against the spring action by one of the rods 111, 113. The member 114 has a projecting portion which engages a stationary stop during the feed motion, so that as the nut 101 approaches the end of the screw, the member 114 is swung over to raise the nut 101 and lower the nut 102, the continuity of the feed being preserved. In the construction shown in Fig. 18, the feed nut mounting is clutched to a rod 133 on the feed carriage by a tilting ring clutch 156. As the feed progresses, a spring 158 is compressed, or a weight is raised, when a projection on the feed nut catches in a rotary toothed wheel 153 on the feed screw, the feed nut is lifted and the spring 158 or weight slides the feed nut mounting back along the rod 133, the clutch ring permitting this movement. The feed nut is retained in its raised position by a spring catch 150, until the nut is positively depressed by striking a cam 154. The nut is then re-engaged with the feed screw, and the clutch ring again becomes operative. In a simpler form of this construction, the clutch ring and the automatic re-positioning means are dispensed with, the feed nut mounting being clamped to the rod 133, in the desired position, by a set screw manually operated.