Patent GB-178335-A (GB)
Title: Improvements in machines for cooling, beating and finishing creams, fondant, and like plastic substances
IPC: A23G3/14
Filed: 1921-04-28
Abstract: 178,335. Kellie & Son, Ltd., R., and Kellie, R. W. April 28, 1921. Rotary batch-mixers.-Relates to machines for cooling, beating, and finishing creams, fondant, and like plastic substances, and comprising stationary scraper blades carried on a. bar by which they are raised or lowered into a revolving container, and a fan or blower for cooling. According to the invention, the mechanism is arranged so that a device for lifting and lowering the blades can be thrown into gear, an automatic stop action taking place at each end of the travel ; or the fan may be put in gear while the container is at rest, the blades being either raised or lowered; or both fan and container may be put in gear while the blades are in the lower position. A shaft 3, Figs. 1 and 4, is driven from a power shaft (not shown) through fast and loose pulleys 64, 65, and passes into a gear-box 1 carrying a slow-speed shaft 6, and has slidably mounted upon it a spur-pinion 4. The pinion may be put into gear with a wheel 5 keyed on the slow-speed shaft to rotate the container 8 on a vertical shaft 7 through bevel-gear 9, 10. Alternatively, it may be put in gear with a wheel 20 keyed to a. sleeve carrying a pulley 19 connected by a belt. 21 to a pulley 23, Figs. 1 and 7, adapted to be put into gear with a shaft 24 for elevating and lowering the blades 66, 67, 68 in the container 8. The fan 12, Fig. 1. is driven from a pulley 11 on the shaft 3, the air being carried by a duct 16 to a drum 17, which it enters at a tangent, and passing through openings in the lower side into a hood 18 over the container. The means for raising and lowering the blades is operated from the pulley 23, Figs. 1 and 7, driven from the wheel 20 when the pinion 4 is in the left-hand position. The pulley 23 is keyed on a boss loose on a shaft 24 and provided with clutch-jaws 25 and a mitre-wheel 26 gearing with mitre-wheels 27, 29, the latter of which is freely mounted on the shaft 24 and is provided with clutch jaws 30. A double-sided clutchmember 31 is moved to the left to rotate the shaft 24 in the same direction as the pulley 23 and to the right to reverse it. The reversing-shaft 24 is extended to the left into a gear-box 33, Figs. 1 and 8, and rotates a nut 35 through bevel-gearing 32, 34 to lift or lower a screw 36 carrying a slide bar 37 supporting the scrapers 66, 67, 68. The slide bar is constrained to travel vertically by columns 69, 70, and is provided with a trip 40 adapted to contact with adjustable stops 71, 72 at the top and bottom of its travel respectively. The stops are carried on a trip-rod 42, which. through an arm 43 on a spindle 44, declutches the pulley 23 from the shaft 24 and thus arrests the vertical movement. The shaft is thrown into and out of gear by a lever 51. A hand-wheel 52. Figs. 1 and & is provided on the main gear-box 1 to operate a pinion 55 and rack 56, Figs. 4 and 6, embracing the driving-pinion 4. A camplate 58 is attached to the hand-wheel 52 and is provided with three depressions 59 with which a belt-shifting lever 60 engages when the belt is on the fast pulley 64, and while the machine is being driven, the hand-wheel cannot be moved. An index may be engraved on the cam, a finger 61 indicating which combination of gear is in motion, and to facilitate the interlocking of the lever 60 with the hand-wheel, a spring-urged ball 62 is adapted to enter one of the recesses 63 in the spindle. The three positions of the handwheel cause, respectively, right position, the wheel 5 to be in gear, the container rotated, and the fan acting; central position, the shaft 6 at rest and fan acting; left position, the wheel 20 in gear for raising and lowering the blades and the fan acting.