Abstract: A slush freezer has a stationary baffle with a set of stationary fingers and a rotatable agitator having a shaft and a set of movable fingers which interleave and interact with the stationary fingers of the baffle. Interference between the movable and stationary fingers is prevented by a thrust bearing between the agitator and the baffle.

Abstract: Slush freezing apparatus with an upper liquid reservoir provided with a rotary agitator above the divider plate between the upper liquid reservoir and lower freezing chamber. The agitator stirs the liquid in the reservoir, thus redissolving ice which forms in the reservoir or which migrates into the reservoir from the freezing chamber. This action keeps the reservoir free of ice. A sealing ring above the divider plate has a contractible loop which interrupts the continuity of the ring and leaves a gap therein. This gap is disposed above the inlet to the dispensing spigot from the freezing chamber, thus to channel flow of liquid from the reservoir to the freezing chamber to the vicinity of the spigot inlet and flush the inlet with liquid from the reservoir and inhibit ice formation over the inlet.

Abstract: An agitator carriage is supported and powered for oscillatory movement along the length of an elongated vat, i.e. from end-to-end of the vat. A pair of stirring blades are supported from the carriage, one stirring blade depending into the vat from each side of the carriage. Each stirring blade is supported to move through a generally circular path in a vertical plane, and the blades are powered independently of the carriage drive. The stirring blade movement has both a vertical and horizontal component as it moves in the vat. The speed of movement of both the carriage and the blades can be varied, independently one from the other, so that the blades, as they move longitudinally of the vat, can be made to define, in the vertical planes of movement, loops varying from generally circular to smaller loops approaching a generally undulating path.