US1140064A - Carbureter. - Google Patents

Description

H. L. RAKESTRAW Y CARBURETER. APPLlcATloN f|LED'rE.,7.1914.

Patented My 18, 1915.

' Wl TNE SSE S HARRISON L. RAKESTRAW, or TOLEDO, omo.V

GARBURETEB.

To all/whom it may concern.'

Be it known that I, HARRISON L. RAKE- STRAW, a citizen of the United States of Y America, residing at Toledo, Lucas county,

Ohio, have invented a new and useful Carbureter, of which the following is a specification.

This invention relates to vaporizing a liquid. 4

This invention has utility when adapted to forming fuel gas by the commingling of a liquid and air, and as disclosed herein may be readily used for carbureting gasoleneor kerosene, or different hydrocarbons of Widely diderent properties.

Referring to the drawings, Figure 1 is a medial vertical section through a carbureter embodying features of the invention; Fig. 2 is a section on the line II-II, Fig. 1, looking 'in the direction of the arrow; Fig. 3 is la fragmentary view, on an enlarged scale of the cam controlling the by-pass duct; and

Fig. 4 is a section on the line IV-IV, Fig. 1, looking in the direction of the arrow.

`The duct 1, for fuel supply, say gasolene, is in communication through the passage 2 (Figs. 1, 4) inthe valve 3 with the upwardly extending passage 4 in the valve 3. The valve 3 may be shifted by the arm 5 from the supply passage 1 to cut off said passage 1 and be in communication with the passage 6, say supplying kerosene, or a less easily carbureted hydrocarbon than is sup` plied by the passage 1. The handle 5 permits of ready control of the three-way valve 3.

The valve passage 4 has its communication with the fuel supply passage 7 controlled by the needle valve 8 mounted on the lever 9 carrying the float 10 in the reservoir 11 in communication by the passage 12 with the passage 7. The float 10, through-the valve 8 maintains a constant level of fuel in the reservoir 11 and passage 7.

The'fuel is removed by injector action for the carbureting through the duct 13, which has the needle valve 14, which may have its degree of opening accurately controlled by the cam eled in the shoe or adjustable cam face 17.

By shifting the arm 18 through the link 19,

Specification of Letters Patent.

positions of the cam.

15 provided with the bolts 16 swiv- Patented May 18, 1915.

Application filed February 7, 1914. Serial No. 817,138.

theposition of the cam 15 may be such as to Y allow the spring 2O to hold the valve needle 14 inthe proper clearance as to the passage 13 for-allowing the desired liquid fuel supply to pass as determined for the various vThe passage 13 ley-passes and is in direct communication with the entrance to the passage 7, -permitting this passage 13 at once to receive the character of fuel with lwhich the arm 5 has placed the valve 3 in communication, and conduct such liquid fuel to be sprayed immediately by the spreading tubular jets 21 in the upward flow of .the primary air supply from the'v duct 22 1n the upwardly extending passage 23 passingcentrally through the reservoir 11 to the fuel or mixing chamber. The fuel dispersing jets 21 tend to subdivide ther liquid to such an extent'throughout the inrushing air that complete atomization is approached.

A supply fora heating mediumis conveniently available in the form of internal combustion engineexhaust having the passage 25 provided with the enlargementv 26 therein jacketing the chamber 24 in its vtravel to its outlet section 27 The chamber 24`has the inward and downwardly extend.- ing heatl conducting and liquid draining baffles 28, which are alternately oppositely inclined. The warmed walls of the chamber 24 keep these baiiles 28 heated, and any liquid particles adhering thereto are warmed to approach vaporization temperature. Should Vaporization not be thus effected, the

the reservoir 11 accumulated liquid in running down the 'baiiies approaches the high velocity vapor stream and in fallingV into the volume thereof has its vapori'zationV made certain. The Vundercut continuous edges 29 of the walls of the chamber 24 and passage 23, like the baiiles. 28 conduct any condensation into the air or gas stream volume to be re-vapOriZed. Between the reservoir-11 'and the chamber 24 is the heat insulation -packing 30 reducing the tendency toward vaporization of the liquid fuel in the reservoir 1 1, thereby avoiding loss from this source aswell as fluctuation in the oat control due to gravity change. The flow of the fuel from the mixing or fuel chamber 24 may be controlled by the controllable valgye -or throttle 31 which may be in communication witlr'the cylinders of readily carbureting supply may be selected' -by the valve 3. That themixture may be rich, onlytheprimary air, supply 22 may bey internal combustion motors for the drawing of the fuel supply therefor.

In startinga' motor, an easily combustible mixture may be desired, andthe more used. As. the motor gets under Way and iheated' up, the less readily vaporized fuel vmaybeusedi To decrease the richness of the f uel mixture, a secondary air supply may be admitted by so shifting the'lever 32v as to allow the disk-33 to rise that the spring 34 may permit the valve 35 to unseat at y the suction through the chamber 24:, and draw in a further air supply by way ofthe passage 36 in communication withthe plus rality of parallel tubes 37 jacketed' to be',

heated by the exhaust and then delivered to the chamber 24. By cupping the valve 35, it may unseat some distance before clearance f or any appreciable air intake occurs, thereby avoiding chatter in operation.

The carbureter as herein disclosed, is. simple in its structure, capable of use with widely varying character 'offuel or fuels,.

for easy and economical operation.

In the operation of the throttle 3l, the fuel intake valve 14 may to advantage be controlled'simultaneously by the shifting of the cam l5 to let in more fuel as the throttle l uses more mixed charge from 'thejcham- 'lfhel central rsleeve -38- of the valve disk:

35 guides the disk in lits reciprocations along the rod 39, rwhile adjusting the nut 40 may through the disk 33 fast on the stem 39 vary the seating force of the spring 34 as may be desired in normal running in` dependently of thecut out of this air supply by the lever 32.

-`What is claimed and it isdesired to secure by Letters Patent is:

1. A; carbureter embodying a centrally disposed upwardly opening fuel supply passage, an air supply passage there'about for initially bringing the fuel into suspension,

a chamber to which said passages deliver,

said chamber provided with baffles inwardly and downwardly extending, the undersides of said baffles upwardly extending from central of the chamber, each lower baffle having its free edge overlapped by the drip edge of the next battle above, whereby any consage, control means for selecting theduct to supply the passage, al1 al1'S`l1pply passage, and a vfuelley-pass .ductdirect from the valve to the air supply passage.

3. The combination in 'a-'carbureter of ai' float reservoir and a mixing chamber, of heating means for the chamber,and'a-v heat insulating4 partition `between and reservoir,

In witness whereof I ailix m in the presence of two witnesses. y

l HARRISON L. RAKESTRAW. Witnesses: l

' GEO. E. KIRK,

GLADYS JAMESON.

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