US957731A - Carbureter. - Google Patents

Description

F. W. BRA-DY.

v GARBURETER.

APPLICATION FILED SEPT. 19, 1907.

2 8HBETSSHBET 2,

0 1 y a M d 9 b n .w a P To all whom it may concern: Be-it known that I, FRANCIS W. BRADY, a citizen of the United States, residing at New York, in the city, county, and" State of New York, have invented certain new and useful Improvements in Carburetors; and I do hereby 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 same.

The particular object of my invention is to produce an im roved carbureter for the heavier hydro-car on oils, though a carbureter made in accordance with my invention may be used to advantage with any oil to be vaporized.

The construction and mode of operation of my improved carbureter will be understood from the following description when read in connection with the accompanying drawings in which the same reference chara acters are applied to like parts throughout.

In the drawin s, Figure l is a central vertical section 0 my improved carbureter; Fig. 2 is a plan on the line 2-2 of Fig. 1; Fi 3 is a section on a line at right angles to Fig. 1 and viewed from the left parts be- |ing shown in elevation; Fig. 4 isa plan on the line H of Fig. 3.

The main body of the carburetor ismade up of the casings a and Z) secured together by the bolts 0. The chamber a; constitutes the vaporizing or carbureting chamber, into which. air is introduced through the inlet pipe d, and from which the carbureted air is withdrawn through the outlet pipe 05. For the purpose of heating the carbureter the casing 12 has an inlet pipe 6 and an outlet pipe e through which the products of combustion from an internal combustion engine or the like may be led. To increase the heating eflect the interior of the casing 71 is formed with a series of bafile plates f, forming a tortuous passage for theheated gases.

For the purpose of initially heating the carburetor there is an opening 9 through which any suitable heating medium, such for example as the flame from a gas burner, may be introduced. The upper surface of the casing b is provided with a series of radial projections h for the purpose of distributing the heat in the' vaporizer.

- The vaporizing surface 0. and the deflector Specification of Letters Patent. 7 Patentedlviay M19, 1910. Application filed September 19, 1907. Serial No; 393,714.

o of the carbureter are mounted for rapid rotation so that the oil fed thereon from the nozzle 8 may is driven in the specific embodiment shown.

from engine cam-shaft m, by a sprocketchain (indicated in dotted lines) running ,over sprocket-wheel Z mounted on sleeve m -shaft is journaled in bracket Z.- The v on stu sleeve m may be clutched in drivin connection with shaft is by clutch-mem er n, which is screw-threaded on the end of stubshaft is and may be screwed back and forth to clutch and unclutch sleeve m with shaft is. "When so clutched shaft is drives bevelgear on its end, which in turn drives spindle 7' through bevel-gear 3'.

Slightly below the air inlet pipe of the easing a has a fiaring enlargement, and Within this enlargement and secured to the s indle y by a transverse pin is the bell-shape ,vaporizinjg surface 0. This surface is so sha ed that the passa e between it and the flaring enlargement o the casing a is of substantially the same cross-section throughout.-

Beneaththe vaporizing surface 0 and closely fitting the interiorof thecasing a, the de Hector 0 is secured to the s indle j by a transverse pin passing throu 1 its hub and through the spindle. The eflector has a series of openings p radiating from its center for the passage of the air, and is so positioned that it is above the outlet from the carbureter. Immediately beneath the deflector 0 is a stationary drip-cup p, the hub of which extends within the socket in the hub i'and is secured thereto by the set screw 9. This cup 30 is so shaped that the passage between itsupper edge and the deflector '0' is smaller on the side nearest the vapor outlet than on the side further removed from the vapor outlet, so that the air passing through the carburetor distributes itself throughout the enlarged heated chamber of the casing wand is thoroughly carbureted before it pass es from the carbureteim The drip-cup p has a drip-passage q positioned to communicate with a dripipe 1' secured in the wall of the casing b an in the hub casing a, and held from Vertical the casing a va or out-take por't below The hub of the deflector 0' has a flaring boss at its lower end, and a boss at its upper en to prevent creeping of oil up the spindle, and similarly the cup 11 has a raised boss on its hub for the same' purpose.

Oil is fed onto the vaporizing surface 0 from the small nozzles in the oil pipe 17 which passes throughthe walls of the casing a above the vaporizing surface and is secured in position by nutst', as shown inFig. 3, so that when the nuts are loosened it may be turned on its own axis, thereby changing the direction of the nozzle .9 and varying the amount of vaporizingsurface upon which the oil is fed. By this means the amount of oil vaporized on the surface 0 may be varied.

lhe o eration is as f0llows:'-1he'carbureter is initially heated, if the heavier hydro-carbon oils are used, through the opening g. Thereupon the sprocket l is clutched to the shaft is and the spindle j is set into rotation, Thereu on the oil pipe is opened allowing oil to ow through the nozzle 8 onto the rotating vaporizing surface 0, on

which the oil is spread in a thin film. Air is drawn into the engine, or into a storage res-' ervoir for the carbureter mixture, through the inlet pi e d, the casing a and the outtake ipe The air: passes downwardly over t e vaporizing surface 0 against the deflector 0','and owing to the close fit of the. deflector within the casing a substantially all of the air passes through the openings p and owing to the peculiar shape of the cup 2' the air is forced to circulate within the lower enlarged chamber portion of the easing a in contact with the radial ribs h before it passes into the pipe 213. An intimate mixture is thus effected between the air and the vapor arising from the oil spread on the vaporizing surface. After the engine is under way the heat of the carbureter is maintained by the exhaust gasespassing through 4 b. When easily volatilized hydro-carbon oils are used it will be unnecessary to heat thecarbureter and in suchcase the casing b may be dispensed with andany other suitable inclosure for the lower casing 4 containing a support for the spindle 7' may be substituted.

The foregoing is a'de'scription of the referred form of my invention, but it wil be seen that its nature is such that the rinciples and mode of operation of it may e emodied more or less completely in other eguivalent structures utilizing apart or all the improved features. What I claim is I 1. A carbureter comprising a carbureting chamber and a vaporizing member rotatably mounted therein, said chamber havin an air inlet port above the vaporizin mem er and tie vaporizing mem er, in combination with means for feeding a stream 'of oil on the upper surface thereon in a of the vaporizing member, and mechanism for rotating said-member to spread the oil caused to pass directly across the film of oil on the vaporizing surface; substantlally as described.

2. A carbureter comprising a casing having a contracted end and an enlarged chamber, connected by a flaring portion, an air inlet in the contracted end and a vapor outtake from the enlarged chamber, a spindle extending through the casing axially of the flaring portion, a bell-shapedyapo'rizing surface mounted on the spindle in the flaring portion, means for feeding oil onto the vaporizing surface, and mechanism for rotating the-spindle and with it the vaporizing surface; substantially as described.

3. A carbureter comprising a carbureting chamber and a vaporizing member rotatably mounted therein, said chamber having an air inlet port above the vaporizing member and a va or out-take port below the vaporizing mem er, and a baflie havin a central passage and substantially.divid1ng the chamber between the vaporizing member, and the vapor out-take port, in combination with means for feeding a stream of oil on the upper surface of the vaporizing member and mechanism for rotating said member to spread the oil thereon in a thin film, whereby the air is caused to pass directly across the film of oil. on the vaporizing surface and in a tortuous path through the central passage in the baflle; substantially as described.

4. A carbureter comprising a carbureting feedin a stream of oil onto the upper surface 0 the vaporizing member, mechanism for rotating said member to spread the oil thereon in a thin film; a drip cup below the vaporizing member to catch any oil that drips therefrom, and a drainage pipe leading from the drip cup to the exterior of the carhiireting chamber, whereby the air is caused to pass directly across the film of oil on the vaporizing surface and the accumulation of oil in thechamber is prevented; substantially as described. I

5.A carbureter comprising a carbureting chamber and a vaporizing member rotatably mounted therein, said chamber having an air inlet port above the vaporizing member, and a: vapor out-take ort below the vaporizing member, and a bath surface with a central passage; and substantially dividin the chamber bet'ween the vaporizin mem er and the vapor out-take port, in combination with means for feeding a streamof oil onto the upper surface of the vaporizing member, mechanism for e having a concave upper thin film, whereby the air is rotating said member on in a thin film,

sea-2'31 to'spread the oil there-- a drip cup below the battle to catch any oilthat drips therefrom, and a drainage pipe leading from the drip cup to the exterior of the carbureting' chamber, whereby the air is caused to pass directly across the film of oil on the vaporizing surface and 'by a tortuous path through the central passage of the battle, and the accumulation of oil in the chamber is prevented; substantially as described.

6. A carbureter comprising a casing hav.-..

ing a contracted end and an enlarged chamber connected inlet in ,the contracted end anda vapor outtake from theenlarged chamber, a spindle extending through the casing axially of the flaring portion, a bell-shaped vaporizing surface mounted on the spindlein the flaring portion, a baffle having central passages, surrounding the spindle between the vaporizing surface and the out-take and substantially fitting the casing, means for feeding oil onto the vaporizing surface, and means for rotating the spindle and with it the vaporizing surface; substantially as described.

7. A carbureter comprising a casing having a contracted end and an enlarged cham'- her connected by aflaring portion, an air inlet in the contracted end and a vapor outtake from the enlarged chamber, a s indle extending through the chamber axia ly .of

the flaring portion, a bell-shaped vaporizing surface mounted on the spindle in the flaring portion, a baflie having central passages secured to the. spindle between the vaporizing surface and the out-take and substantially fitting the casing, means for feeding oil onto the vaporizing surface and means for rotating the spindle and with it the vaporizing surface and baflle; substantially as described.

8. A carburetor comprising a casin having a contracted upper endand an en arged chamber at its lower end connected by an intermediate flaring portion, an air'inlet in the contracted end and a vapor out-take from one side of the enlar ed chamber, a vertical s indle extendingtfirough the casing axial y of the flaring portion, a bellshaped vaporizing surface mounted on the spindle in the flaring portioti, a battle, havmg central passages surrounding the spindle below the vaporizing surface and substantially fitting the casing, a drip-cup below the baffle and having its edge so shaped that it gradually approaches the baffle on the side nearest the outlet, means for feedin oil onto the vaporizin surface and-means or rotatvaporizing surface;'substantially as described. c

9. A carburetor comprising a chamber having an air inlet port and a vapor outtake port, a rotatable vaporizing surface interposed in said chamber bet-ween the ports,

means for feeding oil onto the vaporizing by a flaring portion, an air.

' m central surface, and mechanism for rotating the surface, in combinatlon wlth means for heating 7 the chamber comprising a. casing closing the bottom thereof and containing a passage for heated gases; substantially as described.

10. A carbureter comprising a chamber take .port, a rotatable vaporizing surface interposed in said chamber between the ports, means for feeding oil onto the vaporizing surface, and mechanism for rotating the surface, in combination with means for heating the chamber comprising a casing closing the bottom thereof and pontaining a passage for heated gasesand heat radiating ribs extending into the said chamber; substantially as described.

.11. A carburetor comprising a chamber having an air inlet portand a vapor outtake port, a rotatable vaporizing surface interposed in said chamber between the ports, means for feeding oil onto the vaporizing surface, and mechanism for rotating the surface, in combination with means for heating the chambercomprising a. casing closing the bottom thereof and having an opening for admission of aheating medium; substantially as descr-ibed.

12. A carbureter comprising a casin having a contracted upper end and an en arged chamber at its lower end connected by an intermediate flaring portion, an air inlet, in the contracted end and a vapor out-takefrom one side of the enlarged chamber, avert-ical spindle extending through the easing axially of the flaring portion, a bellshaped vaporizing surface mounted on the spindle in the flaring portion, a baflle, havpassages surrounding the spindle below the vaporizing surfaceand substantially fitting the casing, a dr p-cup below the bafileand having its edge so shaped that it gradually approaches the baflle on the slde nearest the outlet, means for feeding Oll onto the vaporizing surface, and means for rotathaving an air inlet port and a. vapor outing the spindle and with it the vaporizing surface, in combination with a'secon'd casing closin the bottom of the aforesaid casing and se 'ving as a support for the spindle, an I provided on its upper surface with heatradiating ribs, and having a passage for heated gases; substantially as described.

13. A carbureter comprising a chamber I having an air inlet port a vapor outtake port, a rotatable vaporizing surface 1nterposed in said chamber between the ports,

and an adjustably mounted oil feed pipe extending into said chamber and carrying a nozzle directed toward .the vaporizing surface, whereby the direction of the nozzle may be changed to vary the extent of vaporizing surface upon which the 01l 1S fed; substantially as described.

. 14. A carbureter comprising a. casing having an air inlet port and a vapor out-take port, rotatably mountegl, bell-shaped vaporizin surface in sai chamber, anoil earrylng a laterally projecting nozzle directed toward the vaporizing surf-ace, said .pipe being rotatable on its own axis to change the direction of the nozzle and thereoy vary the'extent of vaporizing surface upon which the oil is fed;' substantially as described. 10 V feed'plpe extending into said chamber and 7 In testimony whereof I afiii: my signature,

in presence of two witnesses.

4 FRANCIS W. BRADY. Witnesses: v

HOWARD E. JOHNSON, L. C. MOORE.

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