Patent GB-254807-A (GB)
Title: Improvements in and relating to mincing machines, sausage-making machines and the like
IPC: B02C18/30
Filed: 1925-04-09
Abstract: 254,807. Hetherington, J. April 9, 1925. Mincing; sausages.-A mincing-machine comprises a barrel or casing, a series of independent feeding-worms arranged therein, said worms alternating with stationary perforated plates, and means for coupling the works together. As shown in Fig. 1, the worms 18, 20, 22, 23 alternate with plates 11 and are coupled by flattened projections which engage similarly shaped recesses in the adjacent faces of the next worms. A similar connection 38 couples the worm 18 to the driving-mechanism contained in a casing 24 which carries a motor having a spindle 25 provided with an eccentric portion 26 loosely carrying a pinion 27 meshing with an internal gear 28 fixed within a recessed part of the casing. One face of the pinion 27 is slotted diametrically to engage a corresponding diametral projection 29 on a coupling disc 30, the other face of the disc being provided with a diametral projection, at right angles to the other projection, which is adapted to engage a corresponding slot in a disc 31 carried by a stub shaft 32 journaled in a conical casing which closes the gear space. The shaft 32 drives the shaft 37 through a pin and slot connection and a clutch 36 pressed into engagement by Belleville washers or other spring means 35. The gear casing is divided on the plane 39 and the parts are hingedly connected to facilitate inspection &c. of the gears, the division of the driving-mechanism occurring at the clutch 36. The worms may decrease in pitch towards the outlet of the machine. The worm 18 has an undercut cutting-edge 19, the other worms having radial cutting-edges 21. The perforated plates are prevented from rotating by pins engaging recesses, and the perforations are smaller in the plates nearer the outlet. The worm casing is divided on a longitudinal plane, preferably about 30‹ to the vertical, and one part is removable, being normally held in position by the tapered sleeves 43, 45 which engage bearing surfaces 44, 46, the sleeves being screwed on the casing. The surface 46 is only provided on the removable part. Instead of a long sleeve 43, a series of sleeves may be used. In modifications, the worm casing parts are hinged together and secured by pin and lug means, the pin having an eccentric portion for tightening the parts on longitudinal V-shaped grooved packing joints. The hinged part may have a transparent section. The worm casing may be divided on transverse planes, the parts being screwed together. In another modification, the worms are slidably feathered to a central shaft journaled at the outlet end in a spider which bridges the worm casing and at the other end in the wall of a gear casing. The shaft is driven through sprockets and a friction clutch by an electric motor. The surfaces of the leading edges of the worms may be serrated and the perforated plates may also be serrated to engage therewith. For filling sausages, a nozzle 48 is screwed to a cap 47 and a removable sleeve, on which the sausage casing is already threaded, is mounted on the nozzle and attached thereto by a bayonet joint or like means.