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Publication numberUS1970425 A
Publication typeGrant
Publication dateAug 14, 1934
Filing dateDec 1, 1932
Priority dateDec 1, 1932
Publication numberUS 1970425 A, US 1970425A, US-A-1970425, US1970425 A, US1970425A
InventorsDietrich Grabbe
Original AssigneeDietrich Grabbe
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Auxiliary fueling for internal combustion motors
US 1970425 A
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Description  (OCR text may contain errors)

EL). GRABBE' 1,970,425


Filed Dec. 1, 1952 anvewtoz DIETRICH GRABBE Patented Aug. 14, 1934 UNITED STATES PATENT OFFICE AUXILIARY FUELING FOR INTERNAL COM- BUSTION MOTORS This invention relates to internal combustion engines, particularly to types used in propelling vehicles, aeroplanes, boats and the like where there are demands for increased or reserve energy.

One of the objects of the invention is to provide a tank in which compressed gas may be stored or supplied with means for making gas, and so connected with the carbureter that the contents may be used at will as an additional source of power.

A further feature is in the provision of means of supplying auxiliary fuel to the motor in such quantities and at such times as may be desired.

Another purpose is to produce a simple, effective and practical device under the instant control of the operator for increasing the speed and power of the motor in a novel manner.

These several advantageous objects are attained by the novel construction and arrangement of parts hereinafter described and shown in the accompanying drawing, forming a material part of this disclosure, and in which:

Figure 1 is a side elevational view of a conventional type of motor showing the application of an embodiment of the invention.

Figure 2 is a sectional view taken on line 2--2 of Figure 1, drawn to an enlarged scale.

Figure .3 is a similarly enlarged sectional view taken on line 33 of Fig. 1.

As seen in the drawing a motor housing, designated generally by the numeral 10, is supplied with the usual parts which include a carbureter 11, manifold 12 and transmission casing 13.

A sectional tube connects the carbureter to the manifold, its lower section 14 being provided with a shutter or butterfly valve 15 controlled by a foot lever 17 to which it is connected by a rod 18 as usual, the rod, in this case being provided with a slot 19.

Carried at any convenient point in the vehicle is a tank 20 having a relief valve 21 and connected by a pipe 22 to a pressure gage 23 fixed on some part of the vehicle, as the dash board 24.

The tank 20 is preferably supplied with calcium carbide and water whereby a powerful gas is evolved and retained therein until required, but the tank may also be used for storing any suitable gas under compression.

Connected to the gage 23 is a needle valve controlling the gas from the tank and leading from the valve is a pipe 26 extending to the inlet of a rotary plug valve 27 fixed on the motor housing 10; the valve outlet is engaged by a pipe 28 with the upper section 16 of the tube 14, which it enters as at 29.

The valve 27 has a cylindrical plug 30 held in position by a screw 31 engaging in an annular recess 32 at its inner end and is provided with a transverse port 33 controlling the passage through the valve body.

The extending stem of the plug passes through a stufiing box having a packing nut 34 and has fixed on its end a lever 35 in which is set a crank pin 36 engaging in the slot 19 of the connecting rod 18.

From the foregoing it will be apparent that the valve 15 is moved by the foot lever 17 in the usual manner, but if an excess of power be required, a full opening of the valve causes the end of the slot 19 in the connecting rod to open the valve 27, admitting gas from the tank 20 above the carbureter in amount controlled by the needle valve 25, thereby materially augmenting the power of the motor.

From the foregoing it will be seen that a simple device for this purpose has been disclosed in the preferred form of its embodiment, but it is not desired to restrict the details to the exact construction shown, it being obvious that changes, not involving the exercise of invention, may be made without conflicting with the scope of the appended claims.

'Having thus described the invention, what is claimed as new and desired to secure by Letters Patent, is:-

1. In an internal explosion motor having a carbureter connected with an intake passage to use gasoline as a fuel, an independent tank for gas, means to connect said tank to the connection between said carbureter and intake passage, a manually operable valve in said connections, a pedally actuated valve controlling the fiow of gas from said connections to said carbureter, and a spring pressed relief valve for said tank.

2. In an internal explosion motor having a carbureter connected with an intake passage to use gasoline as a fuel, a valve in said connections, a foot lever to operate said valve, a tank having means to generate gas, a connection between said tank and the connection between said carbureter and intake passage, a valve in the last named connection, and means operated by said foot lever to actuate the last named valve in sequence to the first named valve.

3. In an internal motor having a carburetor DIETRICH GRABBE.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3816083 *Nov 9, 1972Jun 11, 1974Patco Prod IncAccessory cartridge for improving internal combustion engine efficiency
US4068639 *Jun 14, 1976Jan 17, 1978Earl Charles CookAutomobile engine economizer
US4492207 *Feb 27, 1981Jan 8, 1985Petrosystems International, Inc.Dual fuel system
US6276345Dec 22, 1999Aug 21, 2001Kohler Co.Dual fuel system for an internal combustion engine
U.S. Classification123/525, 123/575
International ClassificationF02M13/00, F02M13/08
Cooperative ClassificationF02M13/08
European ClassificationF02M13/08