US1125548A - Priming apparatus for explosive-engines. - Google Patents

Description

w. JAY. IRIMING` APPARATUS F08 EXPLOSIVB ENGINES.

I AIPLIOATION FILED D10. 29, 1913. l l 1,125,548. 1 y Patented .131119,1915.

z SHEETS-SHEET 1.

W. JAY.

PRIMING APPARATUS F011 EXPLOSIVE IENGINES. APPLIGATION FILED 11110.29, 1913.

Patented Jan. 19, 1915.

2 SHEETS-SHBET'Z.

11H1! IIIIIIIIIWIIIIIIII' Wg@ J@ hydrocarbon suiicient to Iagain `start the WEBJAY,OF CHICAGO,v ILLINOIS.

'PRIMING APPARATUS FOR EXPLOSIVE-ENGAINES.

Application led December 29, 1913.

To all lwhom it may concern. 1

Be 1t known that I, .Vnn JAY, a citizen 4of the United States, residing at Chicago, in thecounty ofy Cook and State of Illinois,

have invented certain new and-useful Improvements in Priming Apparatus vfor IlXplosive-Engines, of Which thefollowing is a specification. i f

My invention relates .ingeneral to eXplosive engines and more particularly to means for facilitating the starting of such engines. .Considerable diiiiculty. is often experienced in starting explosive engines, such,

`for insta'ncc,'as those commonly used to propel automobiles, especially in cold Weather when the liquid hydrocarbon does notvaporizeas readily as in vWarm Weather. The relative proportions of fluid hydrocarbon and air, which form the most efficient explosive mixture for running-an. engine after it has started, are often 4not suli'cientlyhighly explosive to initiate the explosions when. the engine is cranked. It is, therefore, frequently necessary to inject directly into an engine cylinder .a small quantity of liquid hydrocarbon in order. thatA the explosions may be started.

My present invention relates to thetype of priming device covered by Patent No. 1,052,826, granted-tome on.February 11, 1913, and more especiallyio an improve- `ment in the embodiment of 4my saidinvention disclosed in my co-'pending application 'Serial No. 67-l,549,i`1led January l3l, 1912.y

` The objectof my; present invention `is to provide. a priming .device ofthe character referred tom-Which the-reservo1r chamber inthe priming conduit for containing .a

priming supply of hydrocarbon Will .be located in a position visible. to the operator of the engine, so that the operatormay readily observe, before stopping the engine,

whether the chamber contains a supply of engine.

My invention also comprises other features of construction Whichnwillbex hereinafter more fully disclosedin the. speoication and specifically pointed out in lthe claims.

In the accompanying drawings I have illustrated my. invention as embodied in two convenient and practical forms, in Which- Figure 1 is a side elevational view .showing my invention appliedtan automobile, the latter. being` indicated iinildotted lines;

Specification of Letters Patent.

tank, to the carburetor.

IParenteel 32111.19, 1915.

serial Naeoaass.

is-supported; nF ig. 3a a sectional detail view Y of the air inlet-valve; Fig.` Il a View similar to' fFig. 1 showing a slightly modified embodiment `of my invention Fig. 5 an enlarged plan View ofthe priming chamber shown in Fig. 4, the dash-board upon which it is supported being shown in section; and Fig. 6 a verticalsectional View on line 6, 6,-Fig. 5.

' Similar reference characters-are used to designate similar. parts in the several figures of4 thedrawings.

Referring 4more particularly to Figs. 1, 2 and 3, reference character A designates in dotted lines an automobile comprising an engine of one or more cylinders B', B2, B3 and B4.

C indicates the carburetor .with Which. the fuel tank D communicates. through the. conduit;l (l. -The explosive mixture is drawn from the carbureter through the conduit 'C to the manifold b of the engine cylinders.

E indicates the dash-board of the automobile.

The automobile above described does not in itself constitute part of my invention, but

.is merely illustrated in order that the-con- 'dent that my'invention yis not limited in its application to any particular type of automobile, nor in' factto automobiles, but is capable of use in connection With explosive engines in general.

Supported in any convenient position, visible to theoperatorof theengine, is a chamber F for containing a priming supply of fuel. This chamber communicates through a conduitn F with. the fuel tank, such conduit conveniently being connected with the conduit cl leading from the fuel The conduit F is connected by a suitable coupling f with a passageway f2 1in the-Wall of the chamber F. A short pipe z. communicates With the passage f and depends Within the chamber-F. A. tube K, open at 4its upper end, extends vupwardly Within the chamber F and comlconneotedfvvith a conduit-N leading to and communicating with the manifold b of the engine. p ting L is controlled by a needle valve-.msecured to a valve stem M which is'providedv with a knurled head m.

The chamber F may be conveniently supported upon the dash-board E so as to be in a position to be conveniently observed by the automobile operator. The chamber is provided with a flange .f which overlies the inner surface of the dash-.flaoardffaroud the opening Vin which the chamber is seated.'

Screws may be extended through the flange f into engagement with the dash-boardto securely support the chamber. The exposed wall of the chamber is preferably formedfof glass G, which is surrounded by a rim g having a flange g in which the glass is supported. The flange g is provided with an exteriorly screw-threaded flange g, which engages an interior screw-threaded flange on the surrounding portion of the chamber F.

The manner of using, and operation of, my improved priming device are as follows: When the engine is initially started `and there is no. fuel in the priming chamber F, the engine is turned over in the usual manner either by a hand crank or a self-starter. The valve m has been previously opened so that the suction created in the engine cylinders is communicated through the manifold to the conduit N and thence through the fitting L and tube K to the interior of the chamber F. The partial vacuum created in the chamber F lifts the hydrocarbon through the conduit F, coupling f', and depending tubc h, into the chamber. When the fluid reaches the level of the open upper end of the tube K, it is drawn therethrough into the conduit N and thence through the manifold into the engine cylinders, thereby supplying a rich explosive mixture which facilitates the starting of the engine. After the engine has been started the valve m is closed so as to disconnect the engine cylinders from the chamber F. Ifdesired, however, the valve m mayl remain open after the' engine has started in order that a more rich explosive mixture may be supplied to the engine until it becomes Warm, than is supplied through the carbureter. It is therefore possible to permit the carbureter to remain adjusted to supply the mixture most eliicie'nt when the engine is warm owing to the fact that it is not necessary that the carbureter should supply a mixture sufficiently rich to initiate the explosion when the engine is cold. Before the operator stops the engine he observes the level of the fuel in the chamber F, and if thereis insufficient fuel already stored in the chamber, the valve m is opened so that the suction created inthe engine cylinders will refill the chamber F from the fuel tank D to substantially the level of the top of the tube K. The valve mis The passageway through the fits" then closed and the engine may be stopped. In orderv to facilitatel the succeeding starting of the engine, the valve m is opened so that the fuel stored in the chamber F will flow through the hole lc adjacent the bottom ofthe tube K, thence pass through the fitting L, conduit N to the manifold, and into the engine cylinders by gravity. The eX- plosions may consequently be quickly started either by the hand crank or by the selfstarter.

In Figs. 4:, 5 and 6 I have illustrated a slightly modified embodiment of my invention in which in lieu of the chamber F I employ a chamber comprising a gas cylinder R supported upon afbase O, the latter comprising spaced tubes O and O2 adapted to extend through holes in the dash-board E. The tubes are provided with clamp nuts o .which engage the outer surface of the dashboard. he passageway through the tube O is continued through the base O andk opens into a space communicating with the interior of the cylinder R. The passageway through the tube O2 is continued through the base O and communicates with the lower end of a tube Rwhich extends upwardly within the cylinder R. S designates a cap for lclosing the upper end of the cylinder R. The tube O is connected with the conduit F leading from the fuel tank, while the tube O2 communicates through suitable couplings with a fitting Ll provided with a valve seat coperating with the valve m to control the passageway to the conduit r and thence through the manifold to the engine cylinders.

The modified form of my invention shown in Figs. 4, 5 and 6 operates in substantially the same manner as that above described in connection with Figs. 1, 2 and 3. The operation of the engine stores a priming' supply of fuelin the chamber R, and such priming fuel is utilized in again starting the engine by opening the valve m so that the fuel in the chamber flows through the opening p atthe base of the tube P, thence through the passage inthe tube O2, through the .fitting L', conduit N and manifold to the interior of the engine cylinder, thereby supplying a rich mixture to facilitate the starting of the explosions.

In order to secure the best results in initially starting the explosions, it is sometimes desirable to mix a limited quantity of air with the priming liquid. This may be accomplished by providing an air inlet valve on the reservoir, as shown at T in Figs- 2 and 3. The'air inlet valve is shown in detail in Fig. ,3 and comprises a cylindrical casing having a reduced screw-thread ed end which engages within a screw-threaded opening inawall of the reservoir F. An inwardly unseating valve T coperates With a seat t" at the lower end of the valve casing to control the passage of atmosphere into the reservoir. The valve is yieldingly held against its seat by a coiled spring surrounding the valve spring t2 and resting at its lower end upon a shoulder above the valve seat t', and engaging at its upper end an adjustable cap T3. The cap T3 is provided with a cylindrical ange t4 which loosely surrounds the upper end of the valve casing and with a central portion t? depending within the valve casing and in screw-threaded engagement with the valve stenrjg. The end of the i valve stem which projects through the cap T3 is provided with a knurled disk T2 by means of which the valve stem maybe adjusted relatively to the cap T3 so as to adjust the tension of the spring. The quantity of air admitted to the reservoir F vmay consequently be regulated by adjust ing the tension of the spring to suit varying weather conditions so as to produce an effi.- cient priming mixture.

From the foregoing description it will be observed that I have invented an improved priming device for explosive engines by the use of Which the operation of the engine stores a priming supply of fuel in a chamber above the cylinder intake, so that such prim-- ing fuel may iiow by gravity into the cylinders in subsequently starting the engine, and Ain which the operator of the engine may observe the supply of fuel in the priming chamber and maintain a desired amount of priming fluid so as to insure the necessary supply for the subsequent vstarting of the engine.

I claim:

1. The combination with an explosive engine, of a reservoir containing liquid fuel, a conduit leadin to said reservoir from a supply of liquid uel, a conduit projecting up- Wardly Within said reservoir and communieating with the engine cylinder, said latter conduit having a hole therethrough adjacent the bottom of the reservoir, and a valve controlling the passageway through said last mentioned conduit.

2. The combination with an explosive engine and a fuel tank therefor of a reservoir containing liquid fuel; a conduit leading to said reservoir from said fuel tank; a conduit projecting upwardly within said reser- Yvoir and communicating with the engine cylinder; said conduit having a hole there,r through adjacent the bottom of said reservoir; a valve controlling the flow of fuel through said last mentioned conduit to the engine cylinder, said reservoir comprising means for rendering visible the amount of fuel therein, and means for supporting said reservoir in a position convenient for the observation of the engine operator.

3. The combination with an explosive engine, of arcarbureter for supplying an explosive mixture to the engine, a priming conduit leading from a supply of liquid fuel to the engine cylinder, a chamber forming part of said conduit for automatically trapping therein a priming supply of fuel, and an inlet valve for controlling the supply of atmosphere to said chamber.

4. The combination with an explosive engine, of a carbureter for supplying an explosive mixture to the engine, a priming conduit leading from a supply of liquid fuel to the engine cylinder, a chamber forming part of said conduit for automatically trapping therein a priming supply of fuel, an inlet valve for controlling the supply of atmosphere to said chamber, and means for adjusting said valve to vary the amount of air supplied to said chamber.

In testimony whereof, I have subscribed my name.

WEBB JAY.

Witnesses:

HENRY A. PARKS, E. M. ANDERSON.

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