US1422033A - Gas cock and jet plug therefor - Google Patents

Description

E. L. GLAUS.

GAS COCK AND JET PLUG THEREFOR.

APPLICATION FILED OCT. 16, I920- v Patented July 4, 1922.

mzz o ss.

lNVf/VTU/f BMIL. L. BLALIE:

ATTURA/EY ulllll m tl" EMIL L. CLAUS, OF MILWAUKEE, WISCONSIN.

GAS COCK AND JET PLUG THEREFOR.

incense.

Specification of Letters latent.

Patented July 4, 1922.

Application filed October 16, 1920. Serial No. 417,361.

T0 all whom it may concern:

Be it known that I, Earn. L. CLAUS, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of W isconsin, have invented certain; new and useful Improvements in Gas Cocks and Jet Plugs Therefor; and I do hereby decocks and in the method of making the same ;1 and in the means of assembling such 1111-;

proved jet plugs in the gas cocks thereof.

In late years gas companies have steadily lowered the standard of the gas which'theyhave supplied and at the same time considerably reduced the pressure of supply with the consequent result that in burningsuch gasthe heat produced is considerably less than heretofore and the flame is relatively small and weak. In order to take full advantage of all the heat units of present day gas and to overcome the objectionable low pressures and the fluctuation in pressures, my invention disclosed in United States Letters Patent No. 1320843, issued November a, 1919; was made- By the use of the structure shown therein present day gasis made to accomplish the results whichca'n be obtained from gas of greatly superior quality and higher pressure without the influence of the invention.

The primary'purpose of the invention illustrated in the accompanying-drawing is to procure all of the advantages which are possible through the use of the structure shown and described in said patent by means of a simpler, cheaper and stronger means; In other words it is the fundamental prin ciple of this present invention to produce a j'etpli'ig from a single piece of material shaped to form a solid wall shell of such thinness that it will. have sui'licient flexure to permit of tight frictional engagement in the part of the gas cook with which it is used. I

v It isalso an object of this invention to providea jet plug which, while' having a solid shell wall, may be drawn from a single blank disk of light stampingn'iaterial.

. It is also an object of this invention to provide an article of this nature which may be used with or without a jet orifice, and

which when used without may be employed 1n connection with suitable valve structure for regulating and cutting off gas flow.

A. still further object of the invention is to provide a gas cook of improved design with which said jet plugs may be used, the latter being accurately and easily assoc ated therewith and 50 arranged that it is impossible for the same to be mutilated by unskillful assembling of the valve structure.

lVith these and other objects in view which will become apparent as the description proceeds, my invention consists in the novel features of construction, combination and arrangement of parts which will be hereinafter more particularly described and claimed.

In the accompanying drawings Figure 1 represents a vertical sectional view through 'a gas cock embodying the essential features of my invention and showing one of my improved jet plugs assembled therein;

Figure 2 is a detail transverse sectional view on an enlarged scale, the plane-of said section being on the line 2-2 of Figure 1;

Figure 8 is a perspective view of one of my improved jet plugs;

Figure 4: is a plan view of a blank disk from which the'j'et plug shown in Figure 3- has been drawn by a suitable stamping operation, and

Figure 5 is an enlarged longitudinal sectional view through movable co acting parts of a gas valve structure having a modified form of my jet plug associated therewith, one portion of the latter being adapted to cooperate with a part of the former to regu late and cut of? gas supply.

Referring more particularly to the draw ings, it will be seen that a gas cock constru'cted in accordance with the principles otth-in'vention includes a casing 1 having an inlet- 2' and an outlet 3, and being pro vided with a taperedbore intersecting the plane of the inlet and outlet. Disposed for rotation in this bore of the casing 1 is a tapered valve plug 4: having a suitable handle 5 on one end and held in position by a spring-urged washer 6 on the other end. The out-let 3 of the casingis surrounded by a discharge nozzle? having a bore 8 of a diameter which is preferably larger than the diameter of the, said outlet and which is; very slightly tapered tor a short distance inwardly from its outer end as indicated at 7'.. The exterior of said nozzle is screw-threaded to receive the screw threads of a closure nipple 9. The improved jet plug 10 which is used with this gas cock structure'is shown most fice becauseof the extreme thinness of the shell forming the jet plug has no cylindrical wall to offer any restriction or to set up any friction which will interfere-with the flow of gas therethrough; In other words the gas which enters the open end of the body portion 11of the jet plug-1O is directed to this jet orifice by the tapered walls of the conical end portion 12 so that the natural flow of the gas is greatly increased in velocity.

The body'portion 11 of the jet plug is also fluted or is provided with longitudinally eX- tending alternately disposed ribs and grooves, the ribs and grooves being diametrically opposed as shown in Figure 2. Also from this view it will be seen that the opposed pairs of ribs are located at'right angles 1 to each other, as are also the pairs of grooves.

As a, result of such construction, if the jet plug is inserted 111a bore of uniform diameter, gas may flow both through the plug and around the same, or between the ribs.

. As hereinbefore mentioned the jet plug 10 is formed of a one-piece shell, the walls of which are solid, this being in contradistinction to the longitudinally splitbody wall of the type of plug illustrated in the hereinbefore referred to patent. Many different ways may be employed for making the new type of plug shown in the present drawing, since the kind of material and method of formation is relatively unimportant so long as the solid wall shell'is of requisite thinness to permit slight'flexure's and has a conical end and a fluted or ribbed body portion. For instance such a plug as this may be made from metal bar stock drilled hollow and fluted, or

' from lava and similar mineral material prepared in the same manner.

On the other hand I have found that a most eflicient article can be produced very cheaply and quickly through a simple stampmg or drawing operation. That is to say I provide a' flat circularblank B ofappropri ate diameter such as is shown in Fig. 4 and, after subjecting the same to the necessary stamping or drawing operations, form'the jet plug shown in Figure 3. The male and female dies by which the operations are carried out may be'varied as to'size and shape to operate on blanks of different diameters and to produce jet plugs of varying sizes and with different numbers of alternate ribs'and grooves, After the stampingor drawing is complete the jet orifice maybe made in the same is affected.

tip of the conical end portion 12, or said end portion may be left solid to produce an articlesuch as is illustrated in Figure 5.

lVhen a jet plug 10 is assembled with a gas cook structure such as is illustrated in Figure l, which is practically the final as sembling operation, the former has" the larger end of its elongated body inserted in the slightly tapered outer end of the dis-' charge nozzle 7 and forced therein as far as possible by hand. After this the closure nipple 9 is threaded on the nozzle until the conical discharge opening 9 has the tip of the conical end 12 of the jet plug engaged therewith and centered therein. lVith the parts arranged in this position,tl1e jet plug will be forced into the bore of the nozzle 7 as the nipple is threaded on the latter and at the same time will be correctly centered or in other words the outer surface of the conical end of theplug 10 will beconcentric with the similar surface of the discharge opening 9 of the nipple 9. Consequently when the nipple is unscrewed a predetermined extent after having forced the jet plug into the nozzle, the flow of gas through the discharge opening 9 and around the conical end of the jet plug will be uniform. This "combination of parts provides a very simple manner of correctly assembling the jet plugs in the gas cock structures and enables the'latter'to be completely assembled before said plugs are added thereto, thereby decreasing the liabil- V ity of derangement of parts through rough handling or the like.

The bore-8 of the discharge nozzle 7 is relatively longso that even though the nipbore 8. If such is permitted tosocc'urthe I V conical end portion 12 isliable to be mutilated with the result that the flow of gas both through the jet plug and around the To further prevent the possibility of the jet plug being thus brought into contact with the end'of its bore 8, the base portion of the discharge nozzle 7 is provided with a stop shoulder13 against, which the inner end of the nipple 9 is adapted to abut. Engagement between these two parts will occur beforeengagement between the inner end of the jet plug and the inner end of the bore 8. i r

When a jet plug 10 is properly assembled in its gas cock as shown in Figure 1, there will be a flow of gas'through the jetorifice of saidjetplug, assuming the valve plug 4- to have its passage aligned with the inlet 2 and outlet 3, and the tapered and,non cylindrical inner wall 'of the conical end portion 12 will cause the gas to be eXpelled through the opening 9' in the nipple 9 at its greatest possible velocity This will have the effect of drawing other gas at the normal pressure of supply around the outside of the jet plug 10, between the ribs thereof, and between the outer surface of the conical end portion 12 and the adjacent surface of the inner nipple wall. In other words the flow of gas through the jet orifice of the jet plug will operate on the injector principle and supply a uniform volume of gas at a constant velocity to the air mixer A or other appliance with which the gas cock is associated. WVhile it is possible to vary the size of the jet orifice, it is preferable to permit the same to remain at one size irrespective of the pressure of the gas supply because the quantity of gas furnished an appliance with which my invention is used is automatically regulated in view of this principle of operation. In other words even though the quantity of gas which passes through the jet orifice is constant irrespective of pressure the quantity of gas drawn into the air mixer will be uniform on account of the compensating nature of the flow of gas around the outside of the jet plug.

My invention will be found to be of considerable advantage when used in connection with so-called simmering burners wherein it is essential that a relatively small quantity of gas at a uniform pressure be furnished. \Vhen so used the closure nipple 9 of the structure depicted in Figure 1 would be threaded onto the discharge nozzle 7 a sufficient extent to prevent any gas escaping around the jet plug 10, all gas being directed through the discharge orifice.

Another use of a jet plug constructed in accordance with my invention is shown in Figure 5. In this case a jet plug 15 is seated in the end of a discharge member 16 carried by any suitable gas appliance structure. A regulating nipple or the like 17 is threaded on the end of this discharge member 16 and has an outlet 18, the wall of which is tapered. Any suitable means may be employed for nick and easy manipulation of the nipple 1 7 to move it toward and away from the imperforate conical end portion 15 of the jet plug. In this arrangement of parts it is necessary that the gas flow around the jet plug 15 if it is to escape from the outlet 18, and therefore the body of the plug is ribbed in a manner similar to the jet plug shown in the other figures of the drawing. Obviously by moving the nipple 17 so that the wall of the outlet 18 is disposed diiferent distances away from the outer surface of the conical end 15 of the jet plug, the gas flow is varied, or entirely out off if the parts are arranged as shown in the dotted lines in Figure 5. Thus my improved jet plug may be employed as one element of a valve structure.

I claim:

1. A gas cook comprising a casing provided with an inlet and an outlet, a valve plug fitted in the casing, a discharge nozzle surrounding the outlet and having a jet plug receiving bore, the outer end of said bore being slightly larger than the inner end portion and tapered there-toward, a closure nipple associated with the discharge nozzle and movable inwardly and outwardly thereof, said nipple having a conical shaped discharge opening, and a jet plug disposed in said bore of the nozzle and having a conical end portion extended therefrom, said jet plug being forced into the bore of the nozzle after being seated in said tapered outer end by moving the discharge opening of the nipple into engagement with the conical end of the jet plug substantially as described, and then moving the nipple outwardly of the nozzle to provide a uniform annular passageway between the wall of said discharge opening of the nipple and the outer surface of the conical end of the jet plug.

2. A gas cock, comprising a casing provided with an inlet and an outlet, valve means intermediate the inlet and outlet, a discharge nozzle surrounding the outlet and having a jet plug receiving bore, the outer end of said bore being slightly larger than the inner end portion and tapered theretoward, and a jet plug disposed in said bore, said jet plug including a relatively thin hollow shell, the main portion having longitudinal ribs forming channels whereby fluid may pass around the plug and the outermost diameter of said plug as defined by said ribs giving to have snug frictional engagement with the walls of said bore.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee in the county of Milwaukee and State of Wisconsin.

EMIL L. CLAUS.

Images