US2860009A - Fuel atomizing spray device - Google Patents

Description

Nov. 11, 1958 C. P. ORR

FUEL ATOMIZING SPRAY DEVICE Filed July 15, 1955 ATTORNEYS FUEL ATOMIZING SPRAY DEVICE Charles Phillips Orr, Camden, N. J., assignor to Spray Products Corporation, Camden, N. 1., a corporation of New Jersey Application July 15, 1955, Serial No. 522,199

3 Claims. (Cl. 299-88) The present invention relates to the application of a special starting fluid to internal combustion engines and more particularly to a means of spraying a special starting fluid into the air intake.

One of the primary objects of this invention is to provide a spray device for atomizing and injecting starting fluid into the air intake passages of an internal combustion engine.

Another object of this invention is to provide a spray device of the character described which may-be sealed when not in use, to prevent evaporation of the starting fluid.

A further object of this invention is to provide a spray device of the character described with interchangeable spray reservoirs so that the spray mechanism may be changed from reservoir to reservoir as the spray fluid is used.

A still further object of this invention is to provide a spray device of the character described with a sealing valve which can be operated by rotation of the spray bulb.

Another object of the invention is to provide means to assist in starting engines which have been subjected to extremely cold climatic conditions.

Other and further objects and advantages of this invention will become more apparent from a consideration of the following specification when read in conjunction with the annexed drawings, in which:

Figure l is a side elevation of the invention shown in spraying position with relation to an internal combustion air intake;

Figure 2 is a top plan view of the device partly broken away;

Figure 3 is an enlarged vertical cross section with parts broken away, taken on the line 3--3 of Figure 2, looking in the direction of the arrows, and

Figure 4 is a vertical cross section taken on the line 4-4 of Figure 3, looking in the direction of the arrows.

Referring now more specifically to the drawing, reference numeral indicates generally the air intake of an internal combustion engine. It should be understood that the'term internal combustion engine used throughout this specification refers to both classes of engines, namely, those employing an electrical ignition system and those which are fired automatically due to high compression. These engines are known in the trade as gasoline engines and diesel engines.

Aspray can 11 is provided with a reduced neck portion 12 at the upper end thereof which terminates in an inwardly extending flange 13 surrounding the opening 14. The spray can 11 is constructed with sealing beads 15 at the top and bottom edges of the cylindrical portion of the can.

A cap 16 of slightly larger diameter than the flanged portion 13 of the spray can 11 is provided with a depending flange 17 which is screw-threaded as at 18 to engage the screw-threaded portion 19 of the can 11. The bottom of the flange 17 of thecap 16 is reverted to form tes Patent 'ice outwardly under the cap 16, sealing the cap fitting 23 air-tight to the cap 16. The cap fitting 23 is provided with a central hollow area 26 and has depending from the lower face of the cap fitting 23 a tubular extension 27 which supports the vertically depending tube 27a that extends into the starting fluid in can 11 communicating with the hollow area 26. The hollow area 26 serves as a temporary fuel storage chamber for accumulating suflicient starting fluid from the tube 27a for establishing an adequate supply head of fluid in fluid conduit 39 for insuring continuous atomization at spray opening 43 of nozzle 41. A screw-threaded bore 28 extends through the side of the cap fitting 23 with its axis in a generally horizontal plane. A second screw-threaded bore 29 of-a diameter somewhat smaller than the screwthreaded bore 28 extends through the other side of the cap fitting 23 in axial alignment with the bore 28. Both of the bores 28 and 29 extendfrom the outside of the cap fitting 23 to the hollow area 26. An air bleeder port 30 communicates with the bore 29 and the interior of the can 11 to permit the passage of air therethrough.

An adapter fitting 31 is provided with an elongated tubular extension 32'which is screw-threaded along its outer surface and is adapted to be threaded into the bore 29. The body 23 at the side adjacent the here has an inwardly tapered recess 23a which coacts with a tapered annular complementary surface 31a on fitting 31 forming a seal when the device is not in use. When a seal is established between recess 23a and surface 31a the tubular extension 32 also'closes or seals port 30 preventing leakage of fluid from can 11. The adapter fitting 31 has a port 33 extending longitudinally therethrough and is provided at its end opposite the tubular extension 32 with an outwardly extending flange 34. A flange 35 is positioned on said fitting 31 at a point spaced apart from the flange 34. The screw threaded portion of tubular extension 32 is of such length that the fitting is maintained in position for sealing body 23 against leakage when fitting 31 is backed off from body 23 in.

the threads of the threaded bore 29 sufficiently to uncover port 30 and provide the recycling path for fluids through tube 27a, chamber 26 and port 30 back to the reservoir constituted by can 11, while bulb 37 is being repeatedly and successively compressed. That is to say, the external threads on the fitting 31 and the internal threads in the bore 29 outwardly beyond the port 30 cover a lineal distance suflicient to maintain the fitting 31 in position with respect to can 11 and in sealed relation to the body 23. A flexible conduit 36 is adapted to engage over the flange 34 with its end seated against the flange 35. An atomizer bulb 37 formed of flexible material is secured to the opposite end of theflexible conduit 36. The atomizer bulb 37 is provided with an air-tight valve 38 to permit air to enter thebulb 37 after the bulb 37 has been compressed.

A tubular fluid conduit 39, having one end thereof screw threaded as at 40, is threaded into the bore 28 of the cap fitting 23 and extendsasubstantial distance longitudinally therefrom. The outer end of the fluid conduit 39 is provided with a fluid nozzle 41. The nozzle 41 is recessed at 42 so as to permit the fluid conduit 39 to be inserted therein, The outer end of the nozzle 41 is provided with a spray opening 43 of substantially reduced diameter with the inner face of the spray opening outwardly bevelled to form a valve seat 44 surrounding the spray opening 43.

An air conduit 45 is seated within thebore 33 of the fitting 31 and extends coaxially with the fluid conduit 39. A-tubular valve member 46 is provided with a bevelled valve face 47 which'is adapted to cooperate with the valve seat 44 when the air conduit 45is completely contained within the fluid conduit 39. The outer face of the tubular valve 46 is longitudinally grooved as at 48 to permit fluid to pass therethrough to reach the spray opening 43.

In the use and operation of. the invention, the can 11 is filled with a starting fluid preferably having the following, properties:

Specificgravity 0.7

Flash point, -F 2O Ignition temperature, F 366 Auto ignition temperature, F:

Gasoline 495 Diesel #1 fuel 490 Diesel #2 fuel 494 Range of inflammability in air Min. 2%-Max. 44%

Thespray opening 43 of the device is brought into close proximity with the air-intake portion of an internal combustion engine which may be a normal opening found in the apparatus or a special opening formed for the purpose. The atomizer bulb 37 is then revolved in a counterclockwise direction, unscrewing the tubular extension 32 from the cap fitting 23 which unseats the valve 47 from the valve face 44 and partially opens the air bleeder opening'or port 30. Pressure is then applied to theatomizer bulb 37 which produces a flow of air through the air conduit 45' which in turn by Venturi action draws starting fuel from the can 11, spraying it in an atomized form into the air intake of the engine.

A recycling path for the fluid is provided from the tube 27a through storage chamber 26 escaping through port 30 which is uncovered by tubular extension 32 andreturning to the reservoir constituted by can 11 insuring a continuous supply of fluid in chamber 26 for delivery throughfluid conduit 39 to the atomizingnozzle 41. l

The engine is simultaneously operated by a conventional starter to create a vacuum at the air intake, pulling the starting fluid into the cylinders thereof. When the engine has been started the adapter fitting 31 is returned to the position shown in Fig. 3 in which tubular extension 32is; screw-threaded firmly into the bore 29 closing port 30 and establishing a-sealed annular seat with cap fitting 23"as indicated, at 23a.

One of the chief advantages. of this invention is the portability of the completely sealed device. The can 11, sealed but ready for use, can be carried in the tool box or elsewhere in the vehicle, without creating a fire hazard, so as to be available on the spot whenever difficult starting occurs. It should be understood, of course, that additional sealed reservoirs may be carriedfor attachment' to the spray when the original reservoir is exhausted; With this invention there is no necessity to carry a large container of starting fluid for refilling purposes with the, attendant dangers of explosion or fire.

Large containers create a fire hazard and, hence, it is desirable to have a container which can be immediately neck formed on the upper end of said reservoir, an in-" ternally threaded sleeve detachably engaged with said' threaded neck, a cylindrical body, said body having an internal central hollow area constituting a fuel storage chamber and an axial bore extending from said chamber to the lower end of said body, said body having an annular recess formed in its lower edge portion, a radial flange on said sleeve engaging in said annular recess, a

tube mounted in said axial bore and extending into said reservoir, said body having a threaded bore extending from said chamber radially outwardly through said body,

said body having a diametrically opposed axial aligned second threaded bore extending from said chamber" through said body, a port extending from said first threaded bore through the lower end of said body in spaced relation and parallel to said axial bore, an adapter fitting having an axial bore provided with an externally threaded tubular extension detachably engageable in said first threaded bore, resilient pump means secured to said fitting and adapted to pump air through the axial bore in said fitting, said threaded tubular extension cooperating to close the open upper end of said port extending from said first threaded bore when said adapter fitting is fully advanced into said body, an elongated conduit having an externally threaded end detachably supported in the second threaded bore in said body, a nozzle carried by the end of said elongated conduit opposite said threaded end, a valve seat formed internally of said nozzle, and a second conduit having one end thereof mounted in the axial bore in said fitting and having a valve face formed on its opposite end cooperating with the valve seat in said nozzle with said second conduit concentrically positioned with relation to said elongated provided with a tapered annular sealing surface and wherein said adapter fitting has a complementary tapered surface providing a sealing connection between said fitting and said body while the threaded tubular extension of said fitting closesthe port in said first threaded bore.

3. A fuel atomizer for starting internal combustion engines as set forth in claim-1 in which the externally threaded tubular extension of said fitting and the linearly threaded portion of said first threaded bore' outwardly beyond the port therein provides a suflicient intercoupled relationship of the threads therein to' maintain said fitting in sealed relation to said body and supported in respect thereto.

References Cited in'the' file of this patent UNITED STATES PATENTS 1,545,102 Holmes July 7, 1925 2,213,522 Holmboe Sept. 3, 1940 2,730,093 Neely Jam. 10, 1956"

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