초록 ▼

The machine dispenses a ready-made milk shake. A freezing chamber has a dispensing valve having porting and a valve element so arranged that flow of the semi-frozen comestible and the flavoring material occurs simultaneously. A beater mixes the two during dispensing. A conduit for the flavoring mate

The machine dispenses a ready-made milk shake. A freezing chamber has a dispensing valve having porting and a valve element so arranged that flow of the semi-frozen comestible and the flavoring material occurs simultaneously. A beater mixes the two during dispensing. A conduit for the flavoring material has a unique coupling to the valve block and a quick-release coupling intermediate its ends. Upon release of the latter, a manually operable sampling valve may be connected to the conduit to selectively draw a sample of the flavoring. A pump is provided for sucking in a liquid comestible and gas in a preselected proportion and delivering them to the bottom of the freezing chamber. A vent is located in the valve block to vent air from the freezing chamber upon start-up of the machine. The vent has an inlet located at a level so that the liquid and gas volumes in the chamber are about equal to the respective proportions pumped.

대표청구항 ▼

In a semi-frozen confection machine including a freezing compartment having an outlet at its front end and adapted to freeze a liquid comestible; a reservoir communicating with the freezing compartment and adapted to hold and supply thE liquid comestible to the freezing compartment; and a rotary bea

In a semi-frozen confection machine including a freezing compartment having an outlet at its front end and adapted to freeze a liquid comestible; a reservoir communicating with the freezing compartment and adapted to hold and supply thE liquid comestible to the freezing compartment; and a rotary beater in the freezing compartment to rotatably stir the comestible therein; and improvement comprising: a valve block having a back side adjacent the freezing compartment outlet and having a valve chamber therein; said chamber having a dispensing outlet and first and second inlet ports; a first passageway connecting one inlet port to the freezing compartment; a second passageway leading from the other inlet port to the exterior of the valve block at one side thereof; a supply of flavoring material; a conduit connected to said supply and having an end at said one side of the valve block; a coupling on the end of the conduit and having a portion received in the second passageway; seal means on the coupling for sealing against the passageway; the valve block having a bore extending transverse of the passageway at a location between the seal means and the one side of the block; and a manually-removable fastener extending through the bore and engaged with the coupling to hold it in the passageway, a valve member mounted in the valve chamber and reciprocably movable between an open position and a closed position blocking flow through the inlet ports; a pair of spaced parallel grooves on the valve member located one below and one above the inlet ports when the valve member is in the closed position; a third groove on the valve member intermediate said pair and shaped so that it is below one of the inlet ports and above the other; and a sealing ring disposed in each groove and sealing against the valve chamber; whereby the intermediate sealing ring seals the inlet ports from each other when the valve member is in closed position. In a machine for dispensing a semi-frozen comestible and a flavoring material including a freezing compartment; refrigeration means for refrigerating a surface of the freezing compartment; a first reservoir for holding a liquid comestible; a first supply means for supplying the liquid comestible and a gas to the freezing compartment; means in the freezing compartment for mixing the frozen comestible and the gas therein; and a second reservoir for a flavoring material, the improvement comprising: a valve block at the freezing compartment and having at least one generally upright elongate chamber therein; said chamber having a dispensing outlet at its lower end; and first and second inlet ports at opposite sides of the chamber and spaced about an equal distance above the dispensing outlet so that the inlet ports are about the same level in the chamber; a first passageway connecting one inlet port to the freezing compartment; a second passageway connecting the other inlet port to said second reservoir means; feed means for feeding the flavoring material under pressure through the second passageway to said other inlet port; an elongate valve member mounted in the chamber and reciprocably movable between an open position and a closed position; said valve member having upper and lower spaced sealing rings extending therearound in planes crosswise of the valve member respectively above and below said inlet ports when the valve member is in its closed position and an intermediate sealing ring extending around the valve member intermediate the upper and lower sealing rings and canted relative to the valve member so that it is below one of the inlet ports and above the other inlet port when the valve member is in its closed position to seal the inlet ports from each other, said upper, lower and intermediate sealing rings being disposed above said inlet ports when the valve member is moved to its open position whereby flow of semi-frozen comestible and flavoring material occurs simultaneously when the valve member is in open position and is stopped when the valve member is in its closed position.