US1052397A - Carbureter for petrol-motors. - Google Patents

Description

W. WINGFIBLD.

OARBURETER FOR PETROL MOTORS.

APPLIGATION- FILED 13110.16. I911.

Patented Feb. 4, 1-913.

To all may concern:

. strain being put upon the metallby tlie ad- .40

. T QFFICE.

WALTER wmermnn, 0F. namne, ENGLAND.

cannunnrnn For; PETROL-MOTORS.

Specification of Letters Patent.

Patented Feb. 4,1913.

Application filed December 16, 1911. Serial no. 666,201.

Be it known that I, \VALTER WINGFIELD, a-subject of the Kin -.-of'Great Britain, residing at 60 Devonshire road,-Ealing, in the county of Middlesex, iiiIEngland, have invented new and useful Improvements in Carbureters for Petrol-Motors, of which-the following is a specification.

.This' invention has-for, its object to provide-a carbureter that gives a constant mixtiire of gas that varies in volume whatever position thev throttle valve may occupy, and

relates to that class 'of carburetor in which a quadrant attached toil-re body of a circular innershell valve is adapted to be at a eater or less distance from the petrol jet disposed beneath.

I The method of adjusting the petrol-jet by disposing a quadrant over its orifice and varyifig its distance therefrom is not new 1??- dse. Hitherto this quadrant has been formed with a fixed support at one end and an adjustable one at the other, so that the spring of the metal blade has been-relied upon to give a gradually increasing or de-' able at either its rear'or forward end or at both, and that its surface is always true, no

justment.

To more fully illustrate this invention reference is made to the accompanying drawings in which Figure 1, 1s an elevation of my imprq ed carbureter on a small scale.- Fig. 2, 1s a front elevation of the valve and casing w1th cover removed showing the jet, and quadrant and method of pivoting and fixing j same. Fig. 3, is a section through the valve center. Fig. 4, shows detail of a modification. Fig. 5, shows detail of valve.

In the drawing 1 is the valve casing having an inlet port 2, communicating with the hot air pipe and induction port 3 leading to the induction trunk of theengine. The valve casing is circular and is open at one i sideor'both; inltheexample shown the casing is prov1ded with aflange 4 on the front side and has a detachable cover 5. J ournaled in a stub bush or socket 6, forming part; of cover 5 is a shaft 7. This shaft carries the circular valve 8 fast thereon, said valve'clos'elji fitting within the caselwhich is turned toreceive it. The valvedifidy or f shell 8 is ported as at 8 to correspond with the induction and air ports of the casing 1.

The shaft 7'has a slot cut in its width as seenin Figs. 2, and 3, and within this is mounted the radius arm 10 of the quadrant.

The quadrant ll'may be in one piece with the arm 10, or be screwed thereto as shown in Fig. 2. -The quadrant 11 is of T section as shown and is adapted to lie above the jet as hereinafter more fully described.

The radius arm 10'is held within the slot by means of two pins 12 placed eccentrically on the setscrews 12 and 12 (see Fig. 3,) said pins being passed through elongated slots 13 and 13 respectively. The pin on screw. 12 owing to its'engagement within'the transverse slot 13 is, on rotation of the screw 12, capable ofmovin the arm 10 up and down, the said arm being alinedduring this operat on by -the', pin of screw 12 engaging the vertical slot 13; on the other hand pin or set 12 can move the arm 10 angularly by reason of its engagement with vertical slot 13%- Diuririgthis operation the pin of screw 12 sets as a,pivot within slot 13, allowing arm 10 'to move'radially. Hence by this means the pos on/of the quadrant 11 with regard to 'the et can be adjusted to a nicety." In order [70 lock the arm in .its adjusted position set screws 14: are em-.'

ployed, and so as to leave these adjustment,

and-setscrews in an accessible position a. detachable flanged plug 15 is screwed into the socket 6. The .jet '16 is fittedinto the cored petrpl pipe in a central position over the hot air intake. The valve shell 8 has a hot airport 8,the form of the, port being preferably as shown in Fig.- 5,"the 'part 8" being merely a pilot opening for slow running and arranged to come coincidentwith the. hot-air port when the quadraiftis' at its position nearest tothe sun-face: of the.

jet as shown in Fig. 2. As the valve opens the quadrant moves farther from thejet until the valve is full open and the quadrant is at its farthest position.

Anextra cold air port 8 is provided and adapted-to become coincident with a slot supply as determined by the position of thequadrant 11. The slot 8 admits of the valve body and spindle 7 being withdrawn over the petrol jet, without disturbing the latter when the cover 5 is removed.

Suitable stops are provided to limit the travel of the valve within its range of movement, and the usual connections are made externally forcontrol of the valve by disposing a lever on the spindle 7 or similar means. v

In Fig. 4, is shown an alternative arrangement in which adjustment of the quadrant ll is made by means of eyed adjustment screws 17 fitted 'o ver studs 18 and locked by nuts 19 on either side of lug orbracket 20, said lug being a projection from the radius sector 21, which latter corresponds to the arm 10 of Fig. 2. The screw 3 is. screwed into the sector 21, and a slot is formed in the metal of the quadrant to allow of radial movement.

Inoperation as the spindle is moved from zero the distance between the quadrant face in relation to the jet becomes greater, allow ing more petrolto issue'and thereby keeping the mixture constant whatever the demand of the engine may be. If the carbureter requires adjustment to obtain better results it"is only necessary to unscrew the plug 15 and alter the position of the screws 12 and 1%.

I claim -1. In combination in a carbureter, a hollow ported valve body disposed within an outer casing, a spindle supporting said valve body, a quadrant having a radius arm, a slot formed in said spindle and adapted to receive the radius arm, and means for adjustably pivoting said arm in said slot, whereby the position of said quadrant in relation to the petrol jet may be regulated,

and a petrol jet, substantially as described.

2. In a carbureter, means for adjusting J the position of a choking quadrant over a petrol jet consisting of slots disposed on the radius arm and of eccentrically mounted pivoting pins adapted to. enter said slots with set screws adapted to bear against said radius arm and retain same'in its adjusted position, a petrol jet, a quadrant attached to the body of a circular inner shell valve adapted to be at a greater or less distance from the petrol jet disposed beneath, subst'antially as described.

WALTER WINGFIELD.

Witnesses:

C. P. LrnnoN, H, D. JAMESON.

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