US1487590A

US1487590A - Gas-engine attachment

Info

Publication number: US1487590A
Application number: US621873A
Authority: US
Inventors: Guy R Moats; Claude B Rexroad
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-02-28
Filing date: 1923-02-28
Publication date: 1924-03-18
Anticipated expiration: 1941-03-18

Description

March 18 1924.

G. R. MOATS ET AL GAS ENGINE ATTACHMENT Filed Feb. 28'. 1925 C/m/o e .fle z/vac/ gayfl maafa INVENTORS WITNESS:

ATTORNEY Patented Mar. 18, 1924.

UNITED STATES PATENT P OFFICE."

GUY R. MOATS AND CLAUDE B. REXBOAD, OF HARRISVILLE, WEST VIRGINIA.

GAS-ENGINE ATTACHMENT.

Application filed February 28, 1923. Serial No. 621,873.

To all whom it may concern: 7

Be it known that we, GUY R. MOATS and CLAUDE B. RExRoAD citizens of the United States, residing-at I-larrisville, in the county of Ritchie and State of West Virginia, have invented new and useful Improvements in Gas-Engine Attachments, of which the following is a specification.

An object of this invention is to produce an air mixer for gas engines of a construction whereby a rich or lean mixture may be delivered to the engine cylinders as oocasion requires.

A further and important object of the invention is to produce, in a gas mixing device for engines, means, in the nature of a headed valve for closing the gas inlet to the mixing chamber, and wherein said valve is unseated only by the suction from the engine, and wherein means, in the nature of an atmospheric air admitting sleeve surrounds the valve seat and has a flared mouth directed toward but out of contact with the head of the valve whereby the adjustment of the sleeve will regulate the admission of airinto the mixing chamber, and as a consequence regulate the seating and unseating of the valve by the engine suction, and furthermore to cause tobe delivered to the engine cylinders either a rich or lean mixture.

A still further, and also important object of the invention is to produce a mixmg chamber for gas engines in which the gas inlet may be connected with a gasometer when natural or artificial gas by varying or high pressure is employed, and in which the inlet is normally closed by a valve having a disk head and which is unseated only by the suction from the engine, the valve seat being surrounded by an atmospheric air inlet sleeve having its mouth fiared'inwardly toward but out of contact with the head of the valve and adjustable with respect thereto whereby tovary the quantity of air admitted into the mixing chamber and consequently regulate the seating and unseating of the valve by the engine'suction, in accordance with the adjustment of the sleeve toward or away from the valve head, such adjustment also regulating the mixture in the mixing chamber, adjustable spring means being provided for contacting engagement with the valve stem when the valve "is at all times provide a passage therebetween,"

said sleeve being adjustable withrespect to the valve head to regulate the admission of air to the mixing chamber as well as to provide a passage for back fire from the en-, gine should the same occur, while in the sleeve there is a choker valve that is normally in open position but is movable to closed position to permit of the easy starting of the engine.

To the attainment of the foregoing and many other objects which will present themselves as the nature of the invention is better understood, reference is to be had to the drawing Which accompanies and which forms part of this application.

In the drawing Figure 1 is an approximately central vertical'longitudinal sectional view through the improvement.

' Figure 2 is a top plan view thereof.

Figure 3 is a bottom plan View of the valve. 1

Figure 4 is a. side elevation of the air inlet sleeve. T

In the drawing, like characters denote corresponding parts throughout the several views.

Referring' now to the drawing in detail, the

numeral 1 designates the cylindrical casing ofour improvement. The casing is integrally formed with an inwardly directed pipe element 2 having an inwardly directed branch 3 disposed centrally with respect to the casing 1. The branch 3 has its mouth flared inwardly to provide a seat for a frusto-conical valve 4. The valve has'an enlarged head portion inthe nature of a outstanding flange that overlies the said widened end of the casing. Above the head there is a semi-cylindrical hollow member 10 having its edge flanged outwardly, as at 11, to overlie the flange 9. and pass ng through the flanges 11 and 9 and entering threaded orifices in the widened or thickened end of the casing 1 there are the shanks of screws 12. The end of the stem 6 which enters the hollow chamber 10 1s kerfed, as at 13 and is disposed opposite but not in contact with the straight end 14 of an arched spring 15. The spring is secured to one side of the chamber by removable means, such as a screw 16. V

The chamber 10 iscentrally formed with a threaded opening that receives therethrough the shank of a screw having a milled head 16. Secured" on thetop of the chamber 19 there is a spring finger 171designed to engage with the milled head 16 of the screw to hold the same adjusted. Theturning of the screw will, of course, adjust the arched spring to bring its stralght end 14 toward or to permit the, same to spring away from the kerfed end of the stem 6.

By providing the stem with thegkert 13 a suitable implement such as a screw driver may be inserted therein after the chamber 10 is removed, and the turning thereof will cause the grinding of the valve 4 on its seat.

In a line with the pipe 2 the casing 1 has an outstanding interiorly threaded ring enlargement or boss 18 in which is screwed one:

end of a pipe 19 that is connected with a gasometer when natural gas or artificial gas of varying or high pressure is employed. The gas passage through the pipe 19 may be controlled by a valve (not shown), if desired.

In the chamber 1 there is an air inlet regulatingsleeve 20. The sleeve 20 has one of its sides fromjits inner end notched, as at 21 to receive therethrough the pipe element 2 of the casing. The sleeve-2O has its upper end or mouth flared inwardly, as at 23, the said flared portion being disposed in close proinixity but not in contact with the disk head 5 of the valve 4. The sleeve is held adjusted in the casing 1 through. the medium of a set screw 22 but, of course, other suitable means may be provided for this purpose.

The sleeveis provided with an elongated longitudinally disposed opening 23 for the passage of the shaft 24 of choker valve 25. In the showing of the drawing, the shaft 24 has a link secured to one of its ends and to this link there is an'operating rod 25. The choker valve 25 is normally in full open position and is only closed when a full flow of gas is desired on the starting of the engine. The portion of the casing 1, above the mouth of the air inlet valve stem to meet'requirements.

sleeve 20 provides a mixing chamber and is, for distinction, indicated in the drawing by the numeral 26. The inlet chamber has .an outlet opening 27 surrounded by a suitable threaded pipe extension 28 connected to the throttle tube for the intake manifold of the engine (not shown).

As disclosed in Figure 1 of the drawing, we removably attach to the lower end of the casing 1 a pipe element 29 which is directed from the building in which the device is installed to the upper atmosphere.

In operation, the choke valve, as previously stated, 1S. first closed to admit a full charge of gas to the mixing chamber on the I starting of the engine The choke valve-is then moved to fully open position so that atmospheric air is admitted throughthe sleeve 20 around the head!) of the valve 4 into the mixing chamber 26.

suction from the engine. The quantity of air admitted through the sleeve into the mixing chamber, however, regulates the unseat the simple means providecha rich or lean.

mixture may be readily obtained in the mix; mg chamber, gttllCl incident to the passage that is always maintained between the flared 'mouth 23 of the sleeve 20 and the disk head 5 of the valve, backfiring by the engine will find an outlet through. this passage.

to any of the parts construction it will be seen that the spring does not normally contact the valveor'the valve seat so that undue friction which would be occasioned by such contact or by a coiled spring surrounding the valve stem between the sleeve 7 and the head 5 of the valve is effectively dispensed with. The adjustment of the spring, as previously stated, is accomplished by the turning of the screw 16 sothat'the arm 14 of the said spring may be positioned desired distances fliom the 3 P viding the dome-sha Jed chamber 10, no grease or foreign su stances can contact with the stem 6 or with the interior of the This air does not in any way influence the valve, and the, unseatmg of the valveoccurs only'by'the 011 high speed casing 1 and the free sliding of the valve stem through this guide is thereby effectively assured.

By providing the improvement with the detachable pipe member 29 that leads to the atmosphere, all requirements of fire underwriters is complied with inasmuch as the same provides a safety device for escaping gas should the valve 4:, for any reason become clogged or scaled to prevent the proper seating thereof when the engine is stopped.

It is believed that the foregoing description, when taken in connection with the drawing will full} set forth the construction, operation and advantages of our improvement to those skilled in the art to which such inventions relate, but it is to be understood that while we have herein set forth a satisfactory embodiment of our device the same is susceptible to such changes and modifications as fall within the scope of our claims without departing from the spirit of our invention.

The straight end of the spring 15 not only serves as a means for quickly reseating the valve when the same is elevated an undesirable distance above its seat, but by adjusting the screw 16, the said end 14 of the spring may be brought to such position with respect to the end of the stem 6 as to regulate the opening of the valve by the suction from the engine.

Having described the invention, we claim 1. In a gas and air mixer for gas engines, a mixing chamber having a port connected with the gasintake of a gas engine, and a gas inlet pipe having its mouth flared to provide a valve seat which is arranged below the port, a frusto-conical valve for the seat, a disk head thereon, a stem for the valve having an outer kerfed end, guide means for the valve stem, an air inlet sleeve having an inwardly flared mouth arranged below, in

' close proximity to, and surrounding the disk head of the valve, a choke valve in the sleeve, and means holding the sleeve adjusted with respect to the head of the valve.

2. In a gas and air mixer for gas engines, a mixing chamber having a port connected with the gas intake of a gas engine, a gas inlet providing a valve seat in the chamber below the port, a frusto-conical valve on the seat having a disk head and a kerfed stem, and whose combined weight normally retains the valve seated, guide means for the valve stem, spring means in the path of contact with the stem for exerting an impelling fore thereagainst to quickly-seat the valve when the latter has been moved too far off of its seat by the suction of the engine, an air inlet sleeve having an inwardly flared mouth disposed below the disk head of the valve to direct air currents through the passage therebetween into the mixing chamber, and likewise to direct such air currents against the under face of the disk head of the valve, a choke valve. in the sleeve, operating means therefor, and means holding the sleeve adjusted with respect to the valve head.

3. In a gas and air mixer for gas engines, a cylindrical casing having a port adjacent its upper end connected with the gas intake of a gas engine, a pipe member therebelow having an upwardly directed branch reamed to provide a valve seat, a valved pipe connected with the first mentioned pipe and with a gasometer, a frusto-conical valve on the valve seat having a disk head and a stem whose outer end is kerfed and whose combined weight normally retains the valve seated, a member closing the upper end of the casing having a depending sleeve providing a guide through which the valve stem freely passes, a dome-shaped chamber secured to said member and to the casing, an

arched spring having one end secured in thechamber and its opposite end bent to form a straight portion disposed above but not in contact with the valve stem whereby to impel the valve to seated position when the same has been raised too far above its seat by suction from the engine, means operated exteriorly of the chamber for adjusting the straight end of the spring with respect to the valve stem, latching means for said adjusting means, an air inlet sleeve in the bot- .tom of the casing, notched toprovide for the passage of the gas intake pipe therethrough and having its upper end rounded inwardly toward the under face of the disk head of the valve, the mouth of the sleeve being of a slightly greater area than the diameter of the disk head, means holding the sleeve adjusted with respect to the disk head to regulate the inflow of air through the sleeve into the mixing chamber provided above the valve and to likewise direct such currents of air against the under face of the head of the valve, a choker valve in the sleeve, operating means therefor, and a conductor pipe secured to the lower end of the casing and communicating with the atmosphere.

In testimony whereof we aflix our signatures.

GUY R. MOA'IS. CLAUDE REXROAD.