Abstract A machine for vending warm drinks selectively (a) by extracting extractable ingredients and (b) by dissolving soluble ingredients comprises an apparatus for supplying both hot water for extracting and warm water for dissolving. A tank for holding a supply of warm water is separated from a substantially smaller second tank for holding a supply of hot water by a heatconducting wall. An electrical heating coil in the second tank is provided with a thermostatic control responsive to the water temperature in the second tank for maintaining said water temperature slightly below the boiling point. Means are provided for maintaining the transfer of heat from the second tank to the first tank at rate such as to maintain a water temperature of 70*-75* C. in the first tank when the water temperature in the second tank is slightly below the boiling point. A valvecontrolled outlet is provided for withdrawing hot water from the second tank for extracting, and a separate valve-controlled outlet is provided for withdrawing warm water from the first tank for dissolving.
In a machine for vending warm drinks selectively (a) by extracting extractable ingredients and (b) by dissolving soluble ingredients, an apparatus for supplying both hot water for extracting and warm water for dissolving, comprising a tank for holding a supply of warm water, a substantially smaller second tank for holding a supply of hot water which is separated from the first tank by a heat-conducting wall, an electrical heating coil in the second tank which is provided with a thermostatic control responsive to the water temperature in the second tank for maintaining said water temperature slightly below the boiling point, means for maintaining the transfer of heat from the second tank to the first tank at rate such as to maintain a water temperature of 70*-75* C in the first tank when the water temperature in the second tank is slightly below the boiling point, a valve-controlled outlet for withdrawing hot water from the second tank for extracting, and a separate valve-controlled outlet for withdrawing warm watEr from the first tank for dissolving.
Claim 2
Dependent Claim
173 words
In a machine for vending warm drinks selectively (a) by extracting extractable ingredients and (b) by dissolving soluble ingredients, an apparatus for supplying both hot water for extracting and warm water for dissolving, comprising a tank for holding a supply of warm water, a substantially smaller second tank for holding a supply of hot water which is separated from the first tank by a heat-conducting wall, an electrical heating coil in the second tank which is provided with a thermostatic control responsive to the water temperature in the second tank for maintaining said water temperature slightly below the boiling point, means for maintaining the transfer of heat from the second tank to the first tank at rate such as to maintain a water temperature of 70*-75* C in the first tank when the water temperature in the second tank is slightly below the boiling point, a valve-controlled outlet for withdrawing hot water from the second tank for extracting, and a separate valve-controlled outlet for withdrawing warm watEr from the first tank for dissolving.
Claim 3
Dependent Claim
45 words
An apparatus according to claim 1 wherein the second tank is in the form of a vertical tube having an open lower end spaced from the bottom of the first tank and having its upper end extending above the water level in the first tank.
Claim 4
Dependent Claim
39 words
An apparatus according to claim 2 wherein the vertical tube is supported at least in part by a nipple which forms the outlet of the second tank and which is fixed in a side wall of the first tank.
Claim 5
Dependent Claim
35 words
An apparatus according to claim 1 comprising a float-controlled inlet for supplying water to the first tank, and an auxiliary overflow line having an inlet above the water level normally maintained by the float-controlled inlet.