US1020379A - Throttle-valve for carbureters. - Google Patents

Description

3 SHEETS-SHEET 1.

Patenta Mar.12,1912.

M. WBIWODA.

THROTTLE VALVE FOR OABBURETBRS.

APPLIoATIoN FILED 11113.15, 1910.

COLUMBIA PLANOORAFM C0.. WASHKNCITON, D. C.

Mm/J@ W M. WEIWODA.

THROTTLB VALVE FOR GARBURETERS.

APPLICATION FILED rmm, 1910.

1,020,379, Patented Mar. 12,1912.

3 SHEETS-SHBBT 2.

ATTOR/VE YS COLUMBIA PLANOCRAPH C0,.WASN|NOTON. D. C.

M. WEIWODA.

THROTTLE VALVE FOR OARBURBTERS.

APPLIoA'noN FILED rmm, 1910.

1,020,379, Patented Mar.12,1912.

a sums-SHEET a.

WITNESS/58 [NVE/WOR Wa/7am Wam/nda BYQl /1 TTOHNE YS wLUMBlA PLANOGRAP" C0.. wAsNlNa'roN. D, c,

yUNITED STATES PATENT OFFICE.

MATHIAS WEIWODA, OF NEW YORK, N. Y., ASSIGNOR T0 GEORGE W. STEVENS, 0F NEW YORK, N. Y.

THROTTLE-VALVE FOR CARBURETERS.

Specification. of Letters Patent.

Original application led February 20, 1909, Serial No. 479,045.

February 15, 1910.

To all whom it may concern:

Be it known that I, Mari-rms lVniwoDa, a citizen of thel United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Throttle-Valve for Carbureters, of which the following is a full, clear, and exact description.

This invention relates to certain improvements in throttle valves for use in carbureters, and more particularly to that type of throttle valve in which an automatic dilution of the explosive charge may be secured.

This application is a division of my prior application, Serial Number 479,045, filed February 20, 1909, and my improved throttle valve is illustrated in connection with the carbureter claimed in said application. It is evident that the throttle valve could be used with various other forms of carbureters, and that the details of the carbureter per se, which are illustrated in the accompanying drawings, are unimportant as far as the present invention is concerned.

Reference is to be had to the accompanying drawings, forming a part of this speciication, in which similar characters of reference indicate corresponding parts in all the figures, and in whieh Figure 1 is a central longitudinal section through a carbureter constructed as disclosed in my prior application above rcferred to and having my improved throttle valve secuied thereto; Fig. 2 is a central vertical section taken at right angles to the plane of Fig. 1; Fig. 3 is a top plan view of the carbureter; Fig. 4 is a view similar to a portion of Fig. 2, showing the throttle valve detached; and Fig. 5 is an end view of the auxiliary air intake connections and throttle controller.

In the specific carbureter illustrated, there is provided a spun metal casing 10, having a chambered cast metal top 11. Within the casing are a plurality of fabric plates 12 and a plurality of air supply pipes 13. The liquid is delivered to the casing through a conduit 14 and maintained at a predetermined level in the casing by a float valve within a removable valve casing 15. The chambered top 11 is subdivided into a eentral outlet chamber 16 and an annular inlet Chamber 17. The air enters the annular Patented Mar. 12, 1912.

Divided and this application filed Serial No. 543,913.

chamber 17 through a conduit 18, which may lead from adjacent the exhaust pipe of the engine, if it is desired to deliver warm air to the carbureter. At the inner end of the pipe 18, there is preferably provided a screen 19, formed of a series ot' concentric oppositely-disposed truncated cone sections and a central cone section, so that the screen presents a very large area and permits the free passage of air, but, at the same time excludes any solid foreign bodies sucked in through the pipe 1S. The air passes from the annular chamber 17 through the air pipes 13 and becomes charged with the liquid, so as to form the explosive mixture.

tral chamber 16, and thence into the casing 43 of my improved throttle valve. Within the casing there is provided an upwardly opening check valve 41 supported in any suitable form oi guide 42, and preferably seating in the opening from the baflles into the chamber 16. All of these parts are substantially as illustrated in my prior application above referred to, and it is evident that they do not, to any material extent, aiti'ect the details or' the throttle valve hereinafter described in detail.

The casing is substantially tubular in form with a horizontal axis, and is provided with an opening 44 in its under side communicating with the passage 16, and connected to a conduit 45 for delivering the diluted explosive mixture to the engine or other point of disposal. At the end of the valve casing opposite to the outlet 45, is an auxiliary air inlet, and in the top of the casing opposite to the inlet 44 is a second auxiliary air inlet. iVithin the casing is a hollow, cylindrical rotatable throttle valve 46, having openings corresponding to the openings in the casing. One end of the throttle .valve is open directly to the conduit 45, and within the valve casing adjacent the outlet `end from the throttle valve are a plurality of plates 47, for giving the explosive mixture aavhiiling motion as it emerges from the end of the throttle valve and enters the conduit 45. These plates are substantially radially disposed, but each is inclined at a slight angle longitudinally of the conduit to produce the desired result. The throttle valve at the end opposite to the outlet conduit 45, is provided with an outwardly-extending arm 48, carrying a spring-pressed catch 49, in engagement with a series of notches in the periphery of an end plate 50, rigidly secured to the throttle valve casing. This end plate along the upper portion thereof is spaced from the end of the casing proper to leave room for the arm 48, so that the latter may swing in an arc to rotate the throttle valve. The plate 50 is provided with a central aperture 51, and secured to the outer surface of the plate and covering this aperture is a hood, 52, provided with a conduit 53, leading from one side thereof to the main air delivering conduit 18. Thus air, heated from any suitable source, may be delivered through the conduit 18 to the main casing of the carbureter, and a small portion of the air may be deflected from the conduit 18 through the conduit 53 tothe hood 52 and thence into the throttle valve to dilute the explosive mixture. The deliver ing of air to the auxiliary air intake from the same source as the air delivered to the main body of the carbureter, constitutes an important feature of my invention.

For controlling the auxiliary air intake, the throttle valve is provided with an opening 54, registering with the opening 51 in the plate 50 and againstthe inner surface of the end of the throttle valve, and covering this opening is a valve plate 55. The valve plate is carried by a stem 56, and is normally pressed against its seat by a spring 57. The valve stem is threaded through a collar 58, and by rotating the valve stem the tension of the spring 57 maybe varied to vary the suction pressure required to open the valve. It is of course understood that the valve plate slides on the valve stem. The collar 58 preferably extends through an opening in the hood 52, and is rigidly supported from the end of the throttle valve by two arms 59, 59, one of which is shown in Figs. 2, 3 and 4, and both of which are shown in dotted lines in Fig. 5. At the outer end of the valve stem is a head 60, by means of which the valve stem may be adjusted, and surrounding the valve stem and in engagement with the outer end of the collar 58 is a thumb nut 61, serving to lock the valve stem in position. The valve 55 as above indicated, constitutes an auxiliary air intake for diluting the explosive mixture, but this valve is designed to operate only at medium or high speeds. For diluting the mixture at low speeds, I provide the valve with a slot /62 in the wall thereof opposite to the main intake, and the casing is provided with an opening corresponding to the slot, but of considerably greater dimension lengthwise of the throttle valve. The valve casing at opposite ends of the opening therein, has lugs 63 and 64, between which is mounted a slide 65 for varying the effective size of the opening in the throttle valve. The slide is movable lengthwise of the casing between the lugs 63 and 64, and is so constructed that when in engagement with the lug 64, the entire opening 62 is uncovered, while when the slide is in engagement with the lug 63, the opening is entirely closed. For varying the position of the slide, a threaded rod 66 is provided extending through the two lugs and having threaded engagement with the slide. By rotating the rod, the

Vslide is moved longitudinally. A spring 67 is preferably mounted between one end of the rod and the outer surface of the'lug 64, and preferably engaged by a flange 68 on the rod, so that a jarring action will not tend to rotate the rod. The spring also permits the rod and slide to be moved longitudinally to automatically vary the size of the air intake 62, without rotating the rod, thus when the engine is running the rod may be moved longitudinally to partially close the opening, and the effect of this on the speed of the engine, may be noted. If it tends to slow down the engine, the rod may be rotated to open the slide to a further extent, while if it tends to increase the speed of the engine, the rod may be rotated to hold the slide in the new position. The circumferential length of the opening 62 is exactly equal to the circumferential length of the main inlet opening at the opposite side of the throttle valve, so that as the throttle valve is ro tated, the main inlet and the auxiliary inlet 62 are opened or closed to exactly the same extent, and the relative cross sectional area of the main inlet and the auxiliary inlet remain constant irrespective of the position of the throttle.

For varying the size of the main inlet to the throttle valve, a slide 69 may be movable longitudinally of the throttle valve to vary the length of the opening. Mechanism may be provided for operating this slide similar to that employed for operating the slide 65. As shown, a threaded rod 70 terminates in a lug 71 at the outlet end of the throttle and has threaded engagement with a lug 72 carried by the slide. The outer end of the rodV terminates outside of the valve casing in a head 73, whereby the rod may be readily rotated to move the slide longitudinally. The slide may be normally held against movement by a spring 74 and may be guided by slot-and-pin connections 75 to the interior of the throttle valve. Neither the movement of the slide 65 nor the slide 69 varies the size of the openings in the throttle valve circumferentially thereof, but varies said openings longitudinally of the throttle valve. Thus the slides lvary the percentage composition of the mixture for any particular position of the throttle, but the movement of the throttle varies only the amount and not the composition of the mixture.

The throttle valve may carry a series of plates 76 disposed substantially radially and arranged about the inlet opening 54, and each set at a slight angle, so as to give the air entering past the automatic air inlet valve 55, a rotary or whirling motion. A lug 78 having an adjustable stop 7 9 may be provided for limiting the position of the arm 48 and the throttle valve.

Various changes may be made in the construction of my improved throttle valve within the scope of the appended claims and without departing from the spirit of my invention.

I-Iaving thus described my invention, I claim as new and desire to secure by Letters Patent:

l. A carbureter having a hollow, cylindrical, rotatable throttle valve having an explosive mixture inlet in one side thereof and an outlet at the end thereof, an auxiliary air inlet in the side of said valve opposite to said first-mentioned inlet, a easing sur rounding said valve, a manually-controlled slide carried by said casing and controlling said last-mentioned aperture, and an automatic valve-controlled air inlet at the end of said throttle valve opposite to said outlet.

2. A carbureter having a hollow, cylindrical, rotatable throttle valve provided with an opening in one side thereof and a second opening at one end thereof, a slide within said valve adapted to rotate therewith and movable longitudinally thereof for controlling the admission of explosive mixture through said first-mentioned opening, a casing surrounding said valve, and means for operating said slide from the outside of said casing.

3. A earbureter having a hollow, eylin drical, rotatable throttle valve, a casing inclosing said valve, a spring-pressed auxiliary air inlet valve normally closing one end of said throttle valve, a hood inclosing the end f said casing and the last-mentioned end of said throttle valve and serving to deliver air to said air intake, and an arm extending out radially between said hood and the end of said casing, for rotating said throttle valve.

4. A carbureter provided with a hollow cylindrical throttle valve, one end of said valve having an opening leading to a conduit, and a plurality of radially disposed plates in said opening and disposed at a slight angle to the length of said opening, said plates giving a whirling motion to fluids passing from said valve through said opening.

5. In a carbureter, a casing having an outlet, a valve for controlling said outlet and having an auxiliary air inlet, a movable member for controlling said air inlet, a rotatable rod having threaded engagement with said member for moving the latter, said rod being also longitudinally movable with said member to control said air inlet, and a spring for normally preventing the longitudinal movement of said rod.

6. In a carbureter, a casing having an outlet, a rotatable valve for controlling said outlet, a slidable member carried by said valve for controlling said outlet independently of the rotation of said valve, a rod having threaded engagement with said slidable member for adjusting the position of the latter, said rod being longitudinally movable with said member to vary the position of the member, and a spring in engagement with the rod and normally preventing the longitudinal movement of the rod and resisting the rotation thereof.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MATHIAS VEIVVODA.

Vitnesses C. R. GRIFFIN, Liso. J. CURREN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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