US1343547A - Priming means for internal-combustion engines - Google Patents

Description

T. F. BOURNE.

PRIMING MEANS FOR ENTEBNAL COMBUSTION ENGINES.

APPLICATION FILED NOV. 9.1913.

Patented June 15, 1920.

a citizen of the THEODORE F, BOURKE, OF liPPEB MONTCLAIR, NEW JERSEY.

PBIMING MEANS FOR IHTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented June 15,1920.

Application flied November 9, 1918. Serial No. 261,760.

To all whom it may concern:

Be it known that I, Tnnononn F. Boomer, United States, and resident of Upper Montclair, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Priming Means for Internal-Combustion Engines, of which the following is a specification.

An object of my invention 18 to prov de means for supplying priming charges to internal combustion engines from a supply) of ii uid fuel, such as liquid hydrocar on, which will be ready for use without requiring the priming charges to be supplied manually. A further obyect tion is to utilize, for priming the engine, liquid fuel flowing by gravity from the same receptacle that supplies such fuel to the carbureter of the engine.

In the accompanying drawings I haye illustrated a receptacle for liquid fuel in communication with the carburetor of the engine ,to supply the carburetor With said fuel by gravity, and manually controlled means providing communication between said receptacle and the engine mngture mamfold or intake conduit for supplying the latter with said fuel by grav1ty for prlmmg the engine. Means also provide communication between said receptacle and the en gine cylinders, such as through a connectron with said manifold, for producing a partial vacuum in said receptacle for charging s'a1d receptacle with such fuel from a main supply tank. Liquid fuel for primingthe engine thus will automatically be maintained in position to flow by gravity to said intake conduit or manifold when said manually controlled means is operated.

Mv invention also comprises novel details of improvement and combinations of parts that will be more fully hereinafter set forth and then pointed out in the claims.

Reference is to be had to the accompanying drawings forming a part hereof, where1n Figure l is a side elevation Illustrating an automobile equipped with my improve monts; Fig. 2 is an enlarged detail of parts shown in Fig. 1; Fig. 3 is a detail plan view of part of Fig. 2; Fig. dis an enlarged sectional view through the receptacle for the liquid fuel for supplying the carbureter and the priming charges for the engine; and Fig. 5 is a sectional detail:

In the accompanying drawings the reference numeral 1 indicates an internal comof the invenbustion engine, 2 indicates an intake conduit or manifold for the engine, and 3 indicates a carburetor communicating "with said conduit, which parts may be arranged and connected in any well known manner. At 4: isa main supply tank for liquid hydrocarbon fuel, such as gasolene, kerosene or the like, and at 5 is an auxiliary receptacle or tank in. communication with tank 4 to receive the fuel therefrom and in communication with the carburetor through a conduit or piping 6. The receptacle 5 is on a level higher than the carburetor and tank 4: to deliver-liguid fuel to the carburetor by ravity. lhe conduit or piping 6 extends rom.the lower part of said receptacle below the normal liquid level therein. The upper portion of the receptacle 5 is connected with tank 4 by means of a conduit or piping 7. Liquid may be caused to flow from tank 4 into receptacle 5 by means of exhaust or partial vacuum produced in said receptacle in any well known manner. In the example illustrated the upper portion of receptacle 5 above the liquid fuel therein, is

in communication with intake conduit or manifold 2 through a conduit or piping 8, whereby the exhaust produced by the engine cylinders in conduits 2 and 8 will cause the exhaust or partial vacuum in receptacle 5 for charging of the latter from tank 4.

The parts above described are well known constructions for maintaining a supply of liquid hydrocarbon for the carburetor of internal combustion engines.

In the example illustrated I utilize receptacle 5 as a means to supply liquid hydro-- carbon for priming the engine, whereby so long as there is a supply of liquid fuel for the carburetor in rcrcptucle 5 there will be the same supply for priming the engine. From a point below the liquid level in rece'ptacle 5 I provide a conduit or piping 9 to afford communication from said F0001)- taclc to the engine cylinders, and as shown said conduit 9 is connected with the intake conduit or manifold. By preference conduit 9 is connected to the intake leg 2 ol the manifold at a point above the carbureter for mixing the priming charge with the mixture from the carburetor. 9 may, of course, be connected to any other conduit or passage leading from the carbureter to the engine cylinders, according to well known practice, as where an external manifold is not interposed between the en- 'lhe conduit gine and the carburetor but where the carbureter is connected directly to the intake passage in the engine. I provide a valve indicated at 10 to control the flow of liquid fuel from receptacle 5 through conduit 9 and bypreference said valve will automatically close to shut oil the How of priming fuel. Said valvemay be of any suitable construction, yet I have shown the same in the form of an ordinary apertured tapering plug valve journaled in a casing 11 having a threaded branch 12 for connection with hub 13 at the bottom of receptacle 5, said casing having a branch 14 which may be closed by a plug or valve indicated at 15, whereby the receptacle may be drained. A union 16 may connect the casing 11 with the conduit or pipe 9. For automatically closing valve 10 it may be connected to a suitable spring lilthe opposite end of which spring is connected to the valve casing, a stop 18 on said casing cooperating with a projection 19 connected with the valve stem serving to retain the latter in closed position. At 20 the valve stem is shown provided with a projection or arm whereby the valve may be operated. Said projection '20 may be manually operated by any suitable means, such as by means of a wire or flexible.

connection 21 extending to an operating member, such as a lever 22, pivotally supported in any suitable manner upon a suitable part of the automobile, boat or other apparatus to which the described appliances are applied, such as to the dash-board 23 of the automobile, in a convenient position for operation. By preference valve 10 is located adjacent to receptacle 5 so that the length of conduit or pipe 9 from such valve to the conduit or manifold 2 will contain a limited supply of liquid fuel to be drawn to the engine after valve 10 is closed, for continuing the priming charge until the supply of fuel has been sucked out of conduit 9, to enable th operator quickly to close valve 10 withol t oversupplying the priming charge, and yet permitting the engine pistons to continue to draw the priming charge for a limited period.

In Fig. 4 I have illustrated a so-callcd vacuum receptacle, for containing the supply of liquid fuel in connection with which my improvements are applied, Said receptacle is similar to that disclosed in Letters Patent to vVebb Jay, No. 1,125,549, issued Jan. 19, 1915, and is illustrated for the purpose of disclosing means to automatically maintain such a supply of liquid hydrocarbon for the carbureter and for priming, although my invention is not limited to the particular construction of such receptacle set forth. In Fig. 4 the conduit 8 is controlled by a valve 25 and air intake passage 26 is controlled by a valve 27, the passage 26 having communication through the engine cylinders passage 28 with the space 29 between the outer wall 5 and the inner vessel 30 of receptacle 5. Said valves are so connected to the lever 31 that they can open and close alternately, as described in the aforesaid patent. When valve 25 is open the valve 27 is closed, and the engine suction is permitted to effect the reduction of pressure within vessel 30 to cause the flow of fuel from tank 4 through pipe 7 into vessel 30 to cause the rise of float 32. Said float is connected by a lever 33 and link 34 to an arm 35 fulcrumed coaxially with lever 31, serving to support one end of tension spring 36 whose opposite end is connected to the lever 31, whereby the spring tends to fold the members 31 and 35 toward each other, either above or below their fulcrum, to resist the rise of the float, and whereby the float may rise suddenly to its upper limit of move ment to cause the unseating of air valve 27 and the seating of valve 25, to cutoff the engine suction and restore atmospheric pressure within vessel 30. lVhen the level ofthe fuel in said vessel is sufiiciently lowered the float will descend to cause the operation of lever 31 and arm 35 for opening valve 25 and closing valve 27 to permit the engine suction to cause the charging of the receptacle, and so on in well known manner. The passage 37 controlled b valve 38 permits the flow of the liquid uel from vessel 30 into the shell 5. From the construction described it will be of the liquid fuel in receptacle 5 is automatically maintained at such, a heightv as to simultaneouslysupply by gravity said liquid fuel to the carburetor for the production of mixture for" the engine and to theconduit or manifold leading from the carburetor to for the priming charge.

When it is desired to start the engine it is merely necessary to open valve 10 for a relatively short period and to rotate the engine crank shaft, either with a selfstarter or by hand operation, whereby the engine cylinders will not only be supplied with fuel for the mixture in the usual way,

but with priming fuel from the same source to enrich said mixture for ready starting of thejengine. The valve 10 may be closed when required, and ma be maintained open temporarily, as esired, to supply fuel additional to that supplied tc the carburetor while the engine is being warmed. I

My invention for priming internal combustion engines utilized in connection with the usual supply of liquid'fuel for the car bureter provides a simple and yet most convenient means for priming the engine Without requiring the engine suction to elevate the liquid from a low level tankfor priming, and without requiring the operator-to do any more than operate valve 10 for understood that the level I i from said receptacle,

starting the priming charge. 1 thereby dispense with devices heretofore proposed or priming engines, such as pumps, pruning cups requiring manual charging with priming fuel, and other known auxiliary devices additional to the usual supply receptz-icle or tank for fuel for the carburetor. My im provements also obviate drawing upon the fuel supply in the carburetor for priming with the conseipient lowering of the liqui level therein.

My invention is ticular details of construction set fort since'thc same may be varied, within the scope of the appended claims, without departing from the spirit of my invention.

' Having thus described my invention, what I claim and desire to secure by Letters Patent is z-- 1. The combination of an internal combustion engine having an intake conduit, a carburetor communicating with said c0nduit, a receptacle for liquid fuel communirating with said carburetor to supply it by gravity, means providing, valve hereinafter named, unobstructed communication between said receptacle and said intake conduit below the normal liquid level in the receptacle to supply priming charges by gravity for the engine from said receptacle independent of the carbureter and a valve to control said first named means.

2. The combination of an internal conibustion engine having an intake conduit, a carburetor communicating with said conduit, a receptacle for liquid fuel communicating with said carbureter to supply it by gravity for running the engine, means providing communication between said rece tacle and said intake conduit to supply priming charges by gravity for the engine means to control said first named means, a main fuelsupply tank, a conduit providing communica ion between said tank and saidreceptacle, and means providing communication between said receptacle and the engine ey inders for causing partial vacuum in said rece tacle for charging the letter from said tank.

3. The combination of an internal combustion engine having an intake conduit, a carburetor communicating with said conduit, a receptacle for liquid fuel located on a level higher than the carbureter, means to feed liquid fuel from said receptacle to the carburetor by gravity for running the en gine, a conduit connected to said receptacle below the normal liquid level therein and in 0 communication with the engi e intake conduit to feed the latter by gravity and means not limited to the parexcept for the the supply to control the flow from said receptacle to the second named conduit for priming the enginb, the last named conduit being arranged toprovide direct and uninterrupted flow of such priming fuel to said intake conduit while said control-means is in an unobstructive Position.

4. The combination of an internal combustion engine having an intake conduit, a carburetor communicating with said conduit, a receptacle for liquid fuel, three se arate means of communication between said receptacle and said intake of said means ccptacle .belo w therein, and the other the normal level of liquid of said means communicating with the receptacle above the said two means communieating with said conduit through the carburetor, and means to control the [low oi' priming charges through the other of said two means.

5. The combination of an internal coinbustion engine having an intake conduit, :1 carbureter communicatingwith's'aid conduit, a receptacle for liquid fuel communieating with said carbureter, a conduit pro viding communication between said receptacle and conduit above the carburetor and below the normal liquid level in the receptacle, means to control the flow through said conduit, a conduit providing corn munication between said first mentioned conduit and said receptacle above the liquid level therein, a valve to control said con duit, said receptacle having an air inlet, a valve to control said air inlet, a float open atively connected with said valves to open and close them alternately according to the rise and fall of the float, a main fuel sup ply tank at a lower level than the receptacle, and a conduit providing communication between said tank and receptacle.

6. The combination of an internal combustion engine having an intake conduit, a carburetor communicating with said conduit, a receptacle for liquid fuel communicating with said carburetor to supply it by gravity, aconduit providin except for the valve hereinafter named, direct and uninterrupted flow of )rimin fuel from below the normal level oi liqui in said receptacle to said first named conduit separate from 9 said fuel to the carbureter t 0 engine, and a valve to conow through the second named said level, one of for. runmn trol the conduit.

.Si ned at New York, count of our ork, this 7th day 0 THEODORE F. BOURNE.

and State November,

conduit, twocommunicatmg with the re-

Images