US855764A - Carbureter. - Google Patents

Description

PATBNTBD JUNE 4, L. B. GAYLOR. GA-RBURETER. APPLIOATION FILED JAN. 17. 1907.

' To all whom it may concern: I

UNITED STATES PATENT OFFICE.

LEONARD B. GAYLOR, OF BOSTON, MASSACHUSETTS.

CARBURETER,

Specification of Letters Patent.

Patented June 4, 1907.

Application filed January 17,1907. Serial No. 352,679.

Be it known that I, LEONARD B. GAYLOR, a citizen of the United States, and .a resident in the city of Boston, county of Suffolk, State of Massachusetts, have invented a new and useful Improvement in Carbureters, of

which the following is a specification, reference being had to the accompanying drawings, in which- Figure 1 i view of one form in which the invention may be embodied, certain parts being shown in elevation and in the position they occupy when the needle valve which controls the entrance ofliquid fuel to the float chamber, is

closed. Fig. 2 illustrates a view similar to.

. heavy 'piece of metal, one end being turned down to form the valve proper, the other end being usually turned down also to afford a suitable spindle for the guidance of the upper end of the valve. In such constructions the weight of the valve is relied-upon to secure.

its proper and efflcient engagement with its s'eat.. Sometimes also a smaller and lighter needle valve has been used, having weights at plied to it, insuch manner as to cause it by t e action ofgravity to properly'attain and retain its seat. Both these forms are satisfactory under many circumstances, but not so where the incidents of use are such that the carbureter is. subjected. to excessive although not necessarily violent vibration, because under such circumstances, the inertia of the valve, heavy or weighted, as it receives the impulses due to the. vibrations and to the;

continuous vertical movements of the float, is such that it works up and down after the fashion of a miniature rock drill wearing its point away very'rapidly and also wearing the valve seat and allowing the fuel to unduly enterthe chamber, and as a result,-t0 over flow the standpipe, sometimes even running out at the top of the float chamber.

After extensive experimentation, I" have llustrates a vertical sectional discovered that if the needle valve be made of thin wire, exceedingly light and provided with a weak spring to aid in its seating and retaining its-seat, then the valve itself having less inertia than the spring is controlled thereby, there will be no movement of the. valve consequent to the vibrations and that v if the vertical movementsof the float acting through the devices connecting it with the valve should occasionally give it an impulse, I

nevertheless having but little weight and consequently little inertia, the lift of the Valve from its seat under the impacts will be very slight and instantly recovered.

'Not only does my invention accom lish.

the above stated advantages, but also y a very simple device. I am enabled to regulate the pressure of the spring-on the valve and thus the fuel level can be set at any desired height, thus avoiding the weighting of the float or reducing the weight of the needle, as formerly necessary.

The fore oing so fully sets forth the inventi on that a rief description only of the drawings will be necessary The drawings show a form of carbureter in. which my invention may conveniently be employed. The gasolene is admitted at A, from whence it enters the float chamber B by the needle valve C. When the gasolene in the chamber is not'up to its full level, as

ing lower position, restsupon lugs D on the outer ends of two small .pivoted levers, E, E,

depressing these outer ends, thus raising the reason of the contact of the inner ends of the levers 'a ainst 'a collar G on Wire stem H of. the nee le valve.- As the gasolene rises in the float chamber, reaching its normal lever, as shown in Fig. 1,-the float rises with it, re-

lieving the Epressureupon the outer ends of' the levers E, whereupon theneedle valve is presseddownwardly into the valve seat by needle valve 0 out from its valve seat by a weak sprin I near its upper end, which is capable of a justment so that it will exert more or less .pressureupon the stem of the needle valvev by the screw block'J which is provided Witha set nut K. The gasolene passes from the float chamber, through an o ening L into a suitable'stand. ipe' (not s own) located in the mixing chain er of the carbureter, in which it attains? a level the same as that in the float chamber in a'manner well understood. The detailsof this part of the apparatus are unimportant.

It will be obvious to those who are familiar with such matters that the details of con struction of the apparatus shown and de-J scribed are immaterial because the nveI1- ti 0n may be embodied '11 many different forms. I therefore do not limit myself to such details.

I claim:

In a carbureter a float chamber, a needle valve consisting of alight wire pointed at the bottom and seated in an underlying corre sponding seat, a collar upon the needle at some distance from its end, a spring engaging with the collar at one end and with a movable i device at its othef'end, which supplements the action of gravity in seatin the valve, a '15 float and means actuated by t e descent of the float and which engage the" needle,

whereby it is lifted from its seat. i. LIn testimonywhereoi I have signed my name to this specification. in the presence of} o two subscribing witnesses,

LEONARD B.- GAYLORQ [Li 5 Witnesses: i

JAMES E. PowERs, ALFRED L. POWELL.

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