GB748639A - Apparatus for freezing desserts - Google Patents

Abstract

748,639. Mixing appliances. ENTERPRISE MANUFACTURING CO. OF PENNSYLVANIA. Jan. 13, 1954, No. 969/54. Class 86. [Also in Group XIII] Relates to means for freezing ice-cream &c. comprising a tray A adapted to be inserted in a refrigerator and having a lid C carrying a motor J which drives through gearing K, at least two agitators G, H depending into the tray. According to the invention agitators G, H are so constructed that, if rotated in the same sense, one would urge the mix downwards and the other upwards and they are detachably and interchangeably coupled to the gearing which rotates them in opposite senses. The result is that in one position both agitators urge the mix downwards to give a dense product and, if the agitators be interchanged, they both urge the mix upwards to give a fluffy product. Agitators G, H have each two wings having triangular openings 33 which act as dies for mixing the mix and one wing of agitator H and both wings of agitator G have cambered upper edges 29 so disposed as to give the desired mixing motion. The wings sweep the bottom and arcuate end walls of the tray with a clearance which is sufficiently small to prevent accumulation of frozen mix thereon. The lid C has a cover D enclosing the gearing K and is held in place by a clip 15 engaging under a top flange 4 of the tray A. Lid C around each agitator coupling has upward and downward facing bosses 9, 10, Fig. 4, on the former of which a drive gear 45 of gearing K runs. A driving stud 44 from the gear 45 passes down through the lid and works in a bearing sleeve 49 and a lubricating pad 48 carried on an inturned flange 11 of boss 10. The stud 44 is held from upward movement by a split ring 46 lying in a groove therein and abutting the underside of flange 11. The stud 44 has a squared end 50 engaging a squared socket 24 in the hub of the agitator. A readily detachable connection between the hub and the stud 44 is effected by a split ring 51 lying in grooves in the stud and hub. The top 21 of the hub surrounds boss 10 and abuts the underside of the lid C to prevent passage of mix into the detachable connection. In a modification, Fig. 9, the motor Q is located above the gearing R, three agitators are provided and an auxiliary lid S is provided beneath the main lid P carrying the gearing. Side levers T are provided which, when swung outward, bear on lid S to break any frozen bond between it and lid P and to hold the agitators in place, and free the connection between lid P and the tray. The former is then removed with the gearing and driving studs and the agitators are left in the tray which is covered by lid S. The orbits of the agitators may intermesh.