US1972700A - Carburetor - Google Patents

Description

Sept. 4, 1934.

s. CAMPANELLA 1,972,700

CARBURETOR Filed Nov. 1e, 195:5 2 sheets-sheet 1 /A/VE/VTOE Sept. 4, 1934.

S. CAMPANELLA CARBURETOR Filed Nov. 15, 1933 2 Sheets-Sheet 2 J200/V50 CAM/DAA/ZA Patented Sept. 4, 1.934

UNITED s'lrvrlzsv PATENT" OFFICE 1 Claim.

This invention relates to improvements in carburetors.

The primary object of -the invention resides in a carburetor for internal combustion engines which may be accurately adjusted t0 Various engines to assure maximum eillciency of fuel consumption.

Another object -ofthe invention is to provide' but by detaching the attachment from the car' buretor, an improper mixture of air and gas results which is incombustible within the engine, thus a motor vehicle may be made theft proof when parked.

A still further object of the invention is the provision of a carburetor attachment which assists the suction of the motor in feeding the vaporized gases to the intake manifold to assure a full charge of fuel to the cylinders on each intake stroke of the engine.

With these and other objects in view, the invention resides in the certain novel construction, combination and arrangement of parts, the essential features of which are hereinafter fully described, are particularly pointed out in the appended claim, and are illustrated in the accompanying drawings, in which:

Figure 1 is a top plan view of my improved carburetor.

Figure 2 is a side elevational view thereof.

Figure 3 is a vertical transverse sectional view on the line 3-3 of Figure 2.

Figure 4'is an enlarged vertical longitudinal view on the line 4-4 of Figure 1.

Referring to the drawings by reference characters the numeral l0 designates a carburetor in its entirety and l1 my fuel economizer attachment. The carburetor 10 comprises a casing 12 formed of two threadedly connected sections, the interior of the casing constituting a fuel reservoir 13. Entering the bottom of the casing 12 is one end of a fuel supply pipe 14 which is adapted to convey gasoline from the fuel tank to the reservoir 13. A valve 15 is provided for regulating the flow of fuel from the pipe 14 to the reservoir 13 and for operating the valve 15, there is provided the usual float 16 which is operatively connected to the valve 15 by operating means 17. As the level of the liquid fuel within the reservoir 13 60 drops, the float 16 will move downwardly thus causing the operating means 1'7 to open the valve 15. and admit fuel to the reservoir 13 and during the rising of the fuel within the reservoir, the float rises until. a predetermined level is reached, after which the mechanism 17 moves the valve 15 to a closed position. A pet cock l18 is provided in the bottom of the casing 12 for draining the reservoir when desired.

The top of the casing 12- is threaded to the 70 under side 'of a fitting 19, the said fitting terminating in a threaded nipple 20 at one end and a flange 21 at its opposite end. The nipple end 20 is provided with an air inlet 22 whereas the opposite end is provided witha fuel outlet 23, the flanged end 21 adapted to be xedly connected to the intake manifold of an internal combustion engine.

The fitting 19 intermediate the inlet 22 and the outlet 2 3 is provided with a seat 24 for receiving 80 a block 25, the said block being bolted or other-l wise fixedly secured to the fitting 19 as at 26. The bottom of the fitting 19 is provided with an inlined or conical portion 27 which extends down into the reservoir 13 and is provided with a pas- 85 sage 28 for establishing communication between the reservoir 13 and the unobstructed passage through the fitting 19.

The block 25 is provided with an inlet passage 29 which communicates with the air inlet 22 90 while a baille 30 formed in the'block 25 depends within the well formed by the conical bottom 27. The baffle 30 is circular in cross section and forms an outlet 31 which is in communication with the fuel outlet 23.

A vertical valve stem 32 'is threadedly mounted in the block 25 as at 33, the lower end of which extends down through the outlet passage 3l and has its lower end beveled as at 34 for coaction with the walls of `the passage 28. n The valve e'nd 100 34 is shown seated so as to close the passage 28 but the stem 32 may be adjusted to regulate the amount of fuel which is to pass from the reservoir 13 for mixture with the air stream. The upper end of the stem 32 is provided with a square ex'- 105 tension 35 which projects above the top of the block 25 and fits into a square socket 36 provided in the vertical' arm 38 of an indicating member4 38. The member 38 is held connected to the squared extension 35 by a union connection 39. 110

The indicating member 38 is also provided with a vertical pointer or finger 40 which is adapted to coact with an annular series of indicating marksl 41 inscribed upon the at horizontal top of the block 25. By reason of the indicating arm 38 and indicating characters, an accurate visible setting of the valve stem 32 may be obtained.

Arranged within the fuel outlet 23, is a butterfly. valve 42 which is operatively connected to the throttle control of the vehicle in which the motor is installed. A butterfly valve 43 is mounted in the air inlet passage 22 for regulating the flow of air to the carburetor.

The fuel economizer 11 includes a pair of elbow sections 44 and 45 threadedly connected together as at 46. The free end of the elbow section 44 opens to the atmosphere whereas the free end of the other elbow section 45 terminates in an internally screw threaded nipple 47 which has threading engagement with the externally screw threaded nipple 20 lof the tting 19.

The elbow, section 45 adjacent the end connected to the elbow section 44 is provided with a reduced portion or restricted throat 48, while formed in the horizontal branch of the elbow 45 adjacent the nipple end 47 is an enlarged globular chamber 49. Slidably mounted in a spider 50 formed within the elbow section 45 and disposed in axial alinementv with the inlet 22 is a stem 5l, one end of which is screw threaded as at 52 and has threading engagement in an opening 53' in the elbow 45. A jamb nut 52 is threadedly con- 1 nected to the exteriorly projecting threaded end of the stem 51 and after an adjustment of the stem has been made, the nut 52 is screwed tight against the elbow to lock the stem against accidental turning movement. The opposite end of the stem 5l is provided with a head 54 having a kerf' or slot 55 in the outer face thereof for facilitating the screwing of the stem by a screw driver or other like instrument into the wall of the elbow 45 with the nut 52 loosened for facilitating the adjustment of the stem in a manner and for the purpose to be described. Slidably mounted upon the unthreaded portion of the stem 51 is a disk 56, the diameter of which is suicientto freely slide into the portion 57 formedwithin the elbow portion 45 adjacent the enlarged globular chamber 49. Interposed between the spider 50 and the adjacent side of the disk 56is a spring 58 while interposed between the opposite side of the disk 56and the head 54 is a spring 59. The

- springs 58 and 59 may be termed equalizing springs to normally position the disk 56 within the portion57 during which time a restricted ininoperative position, but it will be seen that by turning the indicator 38 to a predetermined position, the valve stem 32 may be moved upwardly to a desired open position. Assuming that the flanged end 21 is connected to theintake manifold of an internal combustion engine, it follows that upon each intake stroke of the piston of the engine, a suction through the carburetor andthe attachment 11 is produced. On

each suction stroke, the disk 56 is moved inwardly against the tension of the spring 59 so vas to be disposed within the globular chamber- 49 thus increasing the size of the passage of atmospheric air to the air inlet 22 of the carburetor. When the carburetor is used in connection with engines of multiple cylinders and is operating at a high speed, a rapid reciprocation is imparted to the disk 56 which in addition to controlling the volume of atmospheric air to the carburetor, also serves to push or force the air to the inlet 22 and which force is also exerted upon the vaporized gases after the air has packed the passage 28 and mixed with the fuel drawn from the fuel reservoir 13.

It will be appreciated that various motors require different proportions of air and gas to assure proper combustion of the fuel and this proportion may be accurately obtained by varying the adjustment of the valve 32, the best adjustment being noted by the indicator and permitting an accurate resetting of the valve after each closing of the same.

By threadedly connecting the nipple 47 to the carburetor proper, the said attachment may be easily removed when the owner of a motor vexhicle parks the same, whereby any attempt by an unauthorized person to start the motor will result in failure, as without the attachment 11, an improper mixture of air and gas will result. Thus the motor vehicle may be made theft proof when parked. When the attachment 1l is removed the valve 32 may be shut off and when the attachment is replaced the owner having knowledge of the correct setting of the` valve 32 may instantly turn the indicator 38 to the proper position on the dial 41.

From the foregoing description, it will be seen that I have provided a simple and inexpensive carburetor and fuel economizer, and although one embodiment of my invention has been shown and described, it will be understood that various changes as come within the scope of the appended .claim may be resorted to if desired.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent of the United States, isz- An air control attachment for carburetors comprising an elbow pipe, the end of one branch of which is adapted to be connected to the air intake of a carburetor, while the end of the other branch is open to the atmosphere, an enlarged chamber within the first mentioned branch, a spider within the same branch as said chamber and disposed inwardly of said chamber, a stem slidably mounted in said spider axially of the branch, one end of said stem being screw threaded, a head on the other end of said stem, the bend of'said elbow pipe having a screw threaded opening therein for threadedly receiving the screw threaded end of said stem and through which the said threaded end of said stem extends, a jamb nut threaded to the exteriorly projecting threaded end of said stem and screwed tight against said elbow, a disk slidably mounted' upon said stem between said head and said spider,

and a pair of equalizing springs surrounding said stem, one of said springs being interposed between said disk and said head While the other spring is interposed between said-disk and said of said enlarged chamber.

SECONDO CAMPANELLA.

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