US 2479268 A
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ug. 16, M949. N, SARRM METHOD OF SPACE HEATING Filed Dec. 30, 1947 INVENTOR.
Patented Aug. 16, 1949 UNITED STATES PATENT OFFICE METHOD F SPACE HEATING Nelida Sarria, Buenos Aires, Argentina Application December 30, 1947, Serial No. 794,485 In Argentina January 14, 1947 1 Claim. 1
My invention consists of an improved method of space heating by means of a device which takes advantage of the calories produced by an electric current in a metallic radiator and maintains and continues to distribute the said heat for a period of time considerably in excess of that given by the usual electric radiators and stoves, whilst consuming less current than such other stoves.
With this new device, owing to its capacity for retaining heat, it is possible to continue the heating, even when the current is shut olf for intervals of time, thereby economising current and consuming far less than the usual type of electric heater.
The device consists of an electric radiator which may be of any shape, preferably that of a rectangular prism, the case of which is made of metal and the iront outside wall of which may be chrome or nickel plated, containing an electric resistance of the usual kind of a size proportionally suitable to the apparatus, covered with sheets of mica to insulate same and completely surrounded by a material which retains and redistributes heat, preferably fine, dry sand, with which the whole of the interior of the metallic case of the heater is filled.
Between the said sand and the metal outer case of the -radiator a thick sheet of insulating material, such as asbestos is interposed at the top, back and bottom of the inside of said radiator and said sheets are attached in close contact to the inner surfaces of said three positions in order to prevent the loss of heat in these three directions, which arrangement is illustrated in the attached drawings, where:
Fig. 1 is a vertical section through the center of the front elevation.
(l) the `outer wall, which is of metal and of which the front outer surface may be chrome or nickel plated. The thick asbestos sheet (2) separates the metal walls from the sand in three positions. (3) is the ne, dry sand and (4) is the electric resistance insulated by two sheet mica covers. (5) is the plug for attaching the radiator to the source of electric supply (6) is the removable lid controlled by a spring.
Fig. 2 shows a vertical central section in side elevation.
Fig. 3 shows an exterior elevation of the radiator with its double movable covers at the top for greater facility in changing the electric resistance, or attending to any other defects. The handles for lifting the lids are shown at (l).
The manner of using the new method of heating in accordance with my invention is as follows: The plug is attached to the source of electric current and the radiator heats up the dry sand which, owing to its heat-retaining properties, maintains the said heat for a long period.
Automatic electric switches and thermostats may be attached to the apparatus for the purpose of automatically regulating the space temperature by switching the current on or off as required.
As will be clearly seen, the advantages of my invention are very great both economically and in the consumption of electric current in homes and business premises, etc. firstly through the great economy in consumption, secondly by the avoidance of large water boilers and furnaces with the attendant troubles of fuel storage etc. and labour for attending same. Thirdly because of more rapid heating and longer duration of same without current consumption, owing to the retention of heat. Fourthly as these heaters need only be used in certain rooms where necessary or desirable and do not require a complete installation in the whole building. Fifthly on account of hygiene and the facility of being handled without any danger. Sixthly as there is a great saving of space that would otherwise be occupied by the boiler, fuel storage etc. of the usual space heating installation. A
Having now described my invention, what I claim is':
A storage heater comprising a metal casing provided with a tightly closing lid, at least one` electric heating element in the casing, a thick sheet of asbestos board adjacent to the interior surfaces of the casing and lid, and a filling of ne sand in the casing between the asbestos board and the heating element.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 854,318 Wantz May 21, 1907 1,060,718 Stanley May 6, 1913 1,528,495 Lennig Mar 3, 1925 1,758,213 Bartik May 13, 1930 2,022,812 Roe Dec. 3, 1935