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Publication numberUS2507213 A
Publication typeGrant
Publication dateMay 9, 1950
Filing dateMay 18, 1948
Priority dateMay 18, 1948
Publication numberUS 2507213 A, US 2507213A, US-A-2507213, US2507213 A, US2507213A
InventorsMcconnell Roy H
Original AssigneeMcconnell Roy H
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Internal-combustion engine warmer
US 2507213 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

May 9, 1950 R. H. MCCONNELL 2,597,213



Patented May 9, 1950 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to a device designed for use in warming and maintaining engine blocks of internal combustion engines warm during cold weather, and when the motor is stored in a garage, as over night.

Another important object of the invention is to provide a device of this character which may be positioned on a motor block without the necessity of bolting, hanging or otherwise clamping the device to the motor block, to the end that the heating device may be positioned at any desired place, as for example adjacent to the carbureter or intake manifold, to maintain the carbureter or intake manifold warm to insure better combustion of the fuel passing therethrough.

'Still another object of the invention is to provide a device of this character including a thermostat for cutting the device in or out, with the change of temperature.

With the foregoing and other objects in View which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts, hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing Figure 1 is an elevational View illustrating an engine block warming device, constructed in accordance with the invention.

Fig. 2 is a diagram illustrating the circuit to the heating device and electromagnets.

Referring to the drawing in detail, the reference character 5 indicates an engine block on which the device is positioned, the device being shown as disposed adjacent to the rear end of the engine block.

The device comprises a body portion 6 which is provided with an open side fitted against the engine block 5, the body portion having an opening in which the resistance coil 'I is secured, the resistance coil being in circuit with electric wires 8 leading from e, suitable source of house elec- :5,

tricity supply, the wires 8 being plugged into the usual wall socket of the house wiring circuit, by means of the plug 9.

Disposed within the circuit is a thermostat l0 which is designed to control the circuit to the resistance coil 1, to cut the coil in or out, as is required.

The eleotromagnets i I, form an important part of the invention, since they are so constructed and arranged with respect to the body portion 6, that they will support the body portion E on the engine block, thereby providing means to permit the device to be either removed or replaced to reposition the device, at the will of the operator.

The magnets also provide means whereby the device may be readily and easily disconnected when it is desired to move the engine or motor vehicle equipped with the engine and which has been warmed by the device.

As shown, the electromagnets H are in circuit with the source of electricity supply through the wires 8, in such a way that the electromagnets will remain energized, regardless of whether the electric circuit to the resistance coil l, has been broken.

While I have shown and described an electromagnet as used in the circuit for removably securing the heater to an engine block, it is to be. understood that the usual permanent horse-shoe magnet may be used in supporting the heater on the engine block in lieu of electromagnets, without departing irom the spirit of the invention.

From the foregoing it will be seen that clue to the construction shown and described, I have provided a means whereby an engine block or any part of the motor may be maintained warm during the cold periods or during a warming up period after being idle over night, to the end that the motor will be rendered easy starting.

Having thus described the invention, what is claimed is:

In a motor warmer, the combination of a body having an open side positioned adjacent to the engine block to be warmed, a resistance coil disposed within the open side of the body, wires providing an electric circuit leading from a source of electric power and being connected with the resistance coil and energizing the resistance coil` electromagnets in the circuit, the electromagnets being so constructed and arranged that they will attach the body to the motor block when electric input circuit is completed, the magnets being deenergized when the input circuit is broken, releasing the warmer, and a thermostatic switch in the circuit controlling the electric current passing to the resistance element and regulating the heat to the motor.


REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,244,817 Willson Oct. 30, 1917 1,561,554 Little Nov. 17, 1925 1,603,171 Wade Oct, 12, 1926 1,646,845 Wright Oct. 25, 1927 1,765,655 Chapman et al June 24, 1930 1,932,143 Piercy Oct. 24, 1933 2,095,035 Houtman June 18, 1935 2,067,102 Simon Jan. 5, 1937

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1244817 *Feb 15, 1917Oct 30, 1917Russell A WillsonElectric heater for hot-water tanks.
US1561554 *Sep 2, 1921Nov 17, 1925Frederick B LittleMagnetic fixture
US1603171 *May 17, 1924Oct 12, 1926Charles WadeTrouble lamp
US1646845 *Dec 12, 1925Oct 25, 1927Lamb Knitting Machine CompanyElectric heater
US1765655 *Sep 13, 1928Jun 24, 1930Fred A ChapmanInternal-combustion-engine heater
US1932143 *Feb 11, 1932Oct 24, 1933Thomas & Skinner Steel ProductPermanent magnet support for lamps
US2005035 *May 22, 1933Jun 18, 1935Philips NvX-ray apparatus
US2067102 *Jul 10, 1936Jan 5, 1937George W SimonAutomobile motor warmer
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2877899 *Apr 4, 1955Mar 17, 1959Ernest J NewhouseMagnetic collector and neutralizing element for engines and the like
US3194944 *Jun 18, 1963Jul 13, 1965Papp Stephen JMagnetically attached engine heater
US3835290 *Dec 5, 1973Sep 10, 1974Peters RMagnetically supported vehicle engine warmer
US4492355 *Mar 21, 1982Jan 8, 1985Bylin Heating Systems, Inc.Magnetic mount for heating module
US4506138 *May 5, 1983Mar 19, 1985Future Tech, Inc.Magnetically attachable electric preheater for automobile engines
US6225893Jun 19, 2000May 1, 2001Laurent CaissieAlarm system for engine block heater
USRE32643 *Jul 9, 1985Apr 12, 1988Winland Electronics, Inc.Magnetically attachable electric preheater for automobile engines
U.S. Classification219/205, 248/206.5
International ClassificationF02M1/00
Cooperative ClassificationF02M1/00, F02M2700/435
European ClassificationF02M1/00