Patent GB-354806-A (GB)
Title: Improvements in or relating to apparatus for the mechanical treatment of food
IPC: B02C18/06
Filed: 1930-04-15
Abstract: 354,806. Mixing-machines. HOBART MANUFACTURING CO., Troy, Ohio, U.S.A.-(Assignees of Slager, J. C. and Johnston, H. L.; of Hobart Manufacturing Co., Troy, Ohio, U.S.A.) April 15, 1930, No. 11914. Convention date, May 11, 1929. [Class 86.] In a machine for the mechanical treatment of food, more particularly cutting or agitating, an enclosed motor 14 is suspended beneath the tabletop 10 of a frame 11, and a rotary food container 30 with an overhanging shaft 66 carrying foodtreating means 71, is mounted above the top 10, the driving connections between the motor shaft and the shafts driving the container and the food treating means being substantially enclosed by a lubricant-containing casing 24 having covered access holes. As shown, the food-treating means are knives. The motor shaft 15 carries an interchangeable pinion 16, the plate 150 having an eccentric hole 152 to accommodate the bearing end of the motor so that when the plate 150 is turned pinions of different sizes may be used on the motor shaft. Packing pieces 148 of corresponding thicknesses are used. The bowl 30 has a screwed ring 41 bolted to its underside, the ring being screwed into an annular worm-wheel 35 which is retained in place by a keeper plate 44. The bowl is thus removable by unscrewing it from the wheel 35. The wheel 35 is driven by a worm 31. Fig. 3, slidable on the shaft 18 so that by hand rotation of the bowl 30, it can be engaged with or disengaged from a clutch 33. The worm is held stationary when disengaged from its driving connection by a spring-pressed ball 161 which engages one of a number of longitudinal slots in the periphery of the clutch part 32 on the worm. The shaft 18 runs in a casing 121 supplied with oil from a pressure connection to the bearing 19, and extends through the oil pocket 123 which lubricates the worm gearing. Oil is prevented from escaping from the pocket by baffles 126, 127. The shaft 18 carries a pinion 51 which meshes with a gear wheel 52 on a driving member 55 for an attachment such as a meat chopper or coffee mill. The gear 17 on the shaft 18 meshes with a gear 65 on the knife shaft 66 which is journalled in bearings 67, 68 carried by a lubricant-containing extension 70 of the gear case 24, the knife bearing having an oil feed-back device. The knives are secured to a sleeve which is bolted to the end of the shaft 66 so that the knives may be removed as a unit, and to prevent the ingress of water, the knife bearing has also a water feed-back. The gear 65 may be slidably arranged on the shaft 66 to permit the drive to the knives to be disconnected. The guard cover 83 is pivotally mounted over the bow, and co-operates with a safety switch mechanism as described in Specification 294,924, [Class 28 (ii), Kitchen and like appliances &c.]. The hinge for the cover 83 is so arranged that removal of the cover for cleaning &c. is only possible after the cover has been tilted back. The cover is provided with a knife cleaner comprising a plate adjustably clamped to the cover and having slots into which the rotating knives pass.