US1145871A - Carbureter. - Google Patents

Description

C. B. SMITH.

CARBURETER.

APPLICATlON FILED JULY 10, 1914.

Patented July 6, 1915.

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CARIBURETER.

7 Be it known that 1, CHARLES D. SMITH, a. citizen of the .United States, residing at Dayton, in the 'county'of Montgomery and State of Ohio, have invented certain new and useful Improvements in Carbureters; and l do declare the following to be a full, clear, and exact description of the invention, such.- as will enable others skilled in the art to which it. appertains to make and use the ing .-drawings, and; to'the letters and figures 'of-reference' marked thereon, which form a part, offTthis-specifipation. v 1

'My .invention relates to certain improvements 'in. carbureters.

"l The-object of "the invention is to provide a eartareteataving certain structural parts and arrangements whereby a maximum eiiiciency-i is bbtained and all requirements of a barbureter are sub erved' to a desired extent. To the' fore oirfg ends'the improvements relate to ause le-valve and the seat thereof, thelatter being adjustable relatively to the valve, 1 y p 'The improvements further relate to a roitary valve and its. positionv relative to the tube'and through'which the primary fair a ftted to lthe mixin tube is" controlled-and regulated. And the improve- .lmentsi further relate to the mounting of .the {float relative to the inlet valve which is con:

trolled -thereby,'al1 as will hereinafter more fully-be described, reference being had to the accompanying drawings of which- Figured is a sectional elevation on the ,line li lofFig. 2; Fig. 2 is a sectional view fon the line 272 of Fig. 1; Fig. 3 is .a sectiona-l view on the line 3-3 of Fig. 1; Fig. 4 I i is anenlarged detail elevation of the needle-- *valve, adjustable therefor and adjunctive elements; 5 isa sectional elevation of the automatic air-controlled valve, the

. needle-valve and the support for the latter;

Fig dis a detail view of the positive air controlled valve; Fig.7 is a detail view of the' valve seat ad usting devlce.

' in a detail description of the invention,

Specification of Letters Patent.

drawings.

Patented July it, 11915;

v Application filed July 10, 1914. Serial No. 850,249.

similar reference characters indicate corre sponding parts .in the several views of the The carbureter casing is constructed with a view of accommodating the various elements supported thereby and; contained therein. A preferable form of such casing is here shownito consist of a shell 1, a mix ing tube 4, an air cylinder 15 and acap 2. The space within said shell, between the wall 1' thereof and the tube 4, receives the fluid orgasolene, and therein islocateda segmental 'formof float 3 to be again"referred to in connection with the main inlet valve through which the fuel is admitted. The tube 4 provides a mixing chamber and penetrating a side of said tube and extending from the float-chamber into said mixing chamber is a tube 5. Upon the upper end of said tube 5,2111 enlarged tubular member 6 is rigidly mounted upon which is adj ustably supported a valve seat 7 which cooperates with a needle-valve 14. There is a continuous passage through the-tube 5, its enlarge d extension 6, and the needle-valve seat7. On

- a sideof the needle-valve seat 7, a grooved block 19 is fixed within which a slidable block 20- is mounted by means of a T slot. Engaging the longitudinal slidable block 20 is a pin 21 which is eccentrically mounted in the end of'an' adjusting screw 22 which penetrates a side of the tube 4. The outer end of the adjusting screw 22 is provided with a head 24 and oppositely arranged shoulders 25 the latter being'in a position to engage a stop-pin 25 extending from a side of the tube 4-and thus limiting the turning movement of the screw 92. The needle-valve seat 7 is thus adjustable relative to aneedle-valve 14.- This valve 14 is mounted on a crosshead 12 Which inturn is supported at the upper endsof posts 11 which extend down guide-plate 13 being suitably secured in the upper end of the mixing tube 4:.

The air valve 8 seats upon the upper end of a spider '31 that screws into the lower end of the mixing tube 4. A guide-pin 9 penetrates an apertured boss 32 of saidspider and also passes through the valve 8 and forms a guide for said valve.- A conical spring 10 is placed between the valve 8 and a head 33 on the guide-pin 9, and by means of this spring the valve 8 is normally maintained upon 'its seat. The guide-pin 9 screws through the apertured boss 32 and is, therefore, adjustable to vary, the tension ofthe spring 10.

' The primary. air inlet is controlled by a rotary valve 16 which is mounted in the cylinder 15 and has a spiral opening 17 extend.

ing longitudinally thereof which may communicate with an inlet port 34: which. in turn opens into the mixing tube 4. The rotary valve 16 is turned by means of a head :18 and is limited in its rotation by a pin 36 which is so arranged as to engage a suitable.

portion of the cylinder 15.

The shell 1 has a lateral extension 1" into which an apertured plug 37 screws the aperture in said .plug terminating in a vertical portion 27 which is controlled by a valve 28 mounted in a support 38 extending from the inner extended portion of said plug 37. Also extending from the inner portion of said valve plug 37 is .a bifurcated extension 29 between which'a float lever 30 is fulcrumedosaid lever being attached to the float 3. The free end of the lever 30 extends over the end of the valve 28 in a position to close the valve when the float; level assumes the requisite position such as is shown in Fig. 1. lVhen the lever frees the'said valve 28 by .the float falling to a lowerlevcl the said valve 'is then under theinfluence 'of the incoming gasolene and the gasolene flows into the float chamber until the requisite level is again attained to shut ofi? the intake.

39 designates a collar screwed on to the outer end of the apertured plug 37 by means of which a fuel inlet nozzle 40 is coupled with the member 37.

It'will be observed that the apertured plug 37 is conveniently assembled in its operative position with the valve 28 in its position and the inner extension 29 of said plug in a convenient position for inserting the pivot of the float lever 30. The needle-valve seat 7 1' is movable up or down within certain limits to form a proper opening for the fuel admission.

While I have described minutely the means for adjusting the needle-valve seat, I do not desire to limit myself to the specific means herein shown and described for it 1s obvious that other means than an eccentric and slidable block may be employed to effect such adjustment.

Having described my invention, I claim- 1. In a carburetor, the combination with a shell providing a fuel receptacle and a mixing chamber, of an inlet valve controlling the admission of the fuel to said inixing chamber, a seat member for said valve, and means extending laterally from said valve seat member to the exterior of the shell for adjusting said valve seat relatively to the valve. o

. 2. In a oarbureter, the combination with a shell providing a fuel chamber and a mixing chamber, of a pipe extending from the fuel chamber to the mixing chamber, a movable valve seat member supported on said pipe within the mixing chamber, means extending laterally from said valve seat member to the exterior of the shell for adjusting said valve seat, and a valve cooperating with said seat and controlling tlieedinission of fuelto the mixing chamber.

3. In a carbureter,the combination with a shell providing a fuel chamber and a mixing'chainber, of an air valve controlling the admission of air into the lower end of said chamber, a fuel admission valve connected with said air valve, a movable seat member cooperating with said fuel admission valve,

-a tube extending from the fuel chamber 'to operating with said needle-valve,f ineans for :IflJUSiZIIIg said valve seat member relatively to. the needle-valve, said means extending laterally from the valve seat'member to the exterior of the shell, and a tube extending from the fuel chamber to said valve seat.

5. In a carburetor, the combination with a shell providing a fuel chamber and a mixing chamber, an air valve mounted in the lower end of said mixing chamber, posts extending from said air valve, a crosshead supported.on-=the upper ends of said posts, a needle-valve supported on said crosshead, a

guide member through which said posts and needle-valve project, a movable seat member cooperating with said needle-valve, and means for-adjusting said movable valve seat member relatively to the needle-valve cooperating therewith, comprising a slidable member mounted on the side of said valve seat member.

6D In a carbureter, the combination with 5 a shell providing'a fuel chamber and a mixing chamber, said mixing chamber having an elongated air port ina side thereof, a cylinder mounted parallel with the mixing chamber and over said-air port, of a rotary 1e air valve mounted in said cylinder parallel with said mixing chamber and having a spiral air port therein adapted to partially register with the air port in the side of the mixing chamber. I

In testimony whereof I afiix my signature, 15 inpresence of two Witnesses.

CHARLES D. SMITH. Witnesses:

R. 1]. MCOARTY, MATTHEW SIEBLER.

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