US380743A - Ptters - Google Patents

Description

(No Model 2 SheetsSheet 1. F. BREDEL'.

AUTOMATIC GAS GOVERNOR.

N i PatentedApr. 10, 1888.

N. PETERS. Pholmbmugnphnr. Wash-Halon, n. C,

(No Model.) 2 Sheets-SheetQ.

I. BREDEL.

AUTOMATIC GAS GOVERNOR. No. 380,743. Patented Apr. 10. 1888.

UNITED STATES EErcE,

PATENT FREDERICK BREDEL, OF NEl/V YORK, N. Y.

SPECIFICATION forming part of Letters Patent NO. 380,743, dated April 10, 18188.

Application filed November 17. 1887. Serial No. 255,421. (No model.)

of reference marked thereon, which form a part of this specification.

My invention relates to pressure regulators or governors for gas or similar fluids; and it has for its object to provide agovernor of improved construction, which may be so adjusted as to obtain an automatic variation of pressurein exact accordance with the variations of consumption in the plant to which it may beapplied. Regulators for gas governors have been operated by means of weights arranged upon a proper support, so as to bear upon the valvestem, and adjusted by the addition or removal of weights from time to time as the consumption varies.

By the use of my improved form of gov-' ernor the trouble incident to placing and removing the weights will be entirely obviated, and a steady and uniform variation in pressure will be maintained.

To these ends, and to such others as the invention may relate, the same consists in the peculiar combinations and in the novel construction, arrangement, and adaptation of parts, all as more fully hereinafter described, shown in the accompanying drawings, and then particularly defined in the claims.

In the drawings, Figure l is a side elevation, partly in section, of a gas-governor embodying the principles of my invention. Fig. 2 is a side elevation, partly in section, of the automatic pressure-adjuster. Figs. 3 and 4 are diagrams showing the operation of the arm adjusting mechanism.

.Reference being had to the details of the drawings, A represents the main leading from the gas-holder and the interior pipe, and A. represents the service-main.

B is the cylindrical wall or casing of the water-tank, and B the float-chamber, which is of well-known construction, excepting in certain details, which will hereinafter be more fully explained.

0 represents aconical valve-body, bolted at its lower edge to the outwardly-extending flange 0, formed upon the upper end of the service-main A, and provided at its upper edge with an outwardlyprojecting flange, G which serves as a stop for the valve 0 at the outlet of the valve-chamber 0*.

D is a valve-dome bolted securely to a flange formed at the top of the float-chamber B. The upper edge of the valve-chamber G is enlarged and substantially conical in form, as shown, and is provided at its lower end with the pipe or extension 0 opening at its lower end into the interior of the float-chamber.

E is aplate or weight-holder, which is secured to the lower edge of the spool or drum E through the center of which passes the vertical shaft E the lower portion of which is screw-threaded.

E is an adjusting-wheel mounted upon the screw-threaded portion of the shaft E and resting upon a flange upon the cover of the valve-dome.

F F are uprights bolted to the upper edge of the water-tank, and F are arms, carrying at their lower ends the shafts E, which are journaled between the vertical arms of the uprights F. The opposite ends of the arms are bifurcated, as shown, and within their bifurcations and similar ones upon the outer ends of the arms G are journaled the wheels G upon which rests the plate E, carrying the weights b b. The inner ends of the arms G are pivotally connected to the cross-head G It may be found advantageous in some instances to slightly modify the construction of the automatic pressure-adjuster byconstructing the arms F and G in separate sections and connecting the adjacent sections by means of a turnbuckle, ff, as I have shown in Fig. 2 of the drawings. In said figure I have dispensed with the wheels G2 and substituted therefor pivoted links 9, the ends of the pivots moving horizontally in slots h, formed in suitable guide-plates, If.

In operation a sufficient weight, b, is placed upon the weight-holder E to cause the float chamber B to lower, thus opening the valve 0. Gas is thus allowed to pass through the inlet-pipe A to the valvechamber 0*, and thence through the valve 0 to the valve-dome D, whence it passes through the openings 0 to the float-chamber B, where it exerts its pressure under the roof of the chamber and passes to the service-main A. As soon as the gas which has been admitted to the float-chamber exerts its pressure beneath the roof of the same, the chamber is raised and the valve 0 partly closed, until the opening of the valve will be sufficient to admit such quantity of gas as will be required, under a pressure to be dc termined by the amount of weight applied to the weight-holder and the inclination of the rods G. When a greater volume of gas is consumed, the pressure within the fioat-chamber will be lessened and the chamber carrying the valve will be opened so as to allow the gas to enter more freely, and at the same time-the rod E carrying with it the crosshead G will be lowered, thereby lessening the angle of vertical inclination of the rods G, and the weight is caused to hear more directly upon the cross head G and thence upon the float-chamber, thus requiring a greater pressure within the chamber to counterbalance the same, and the gas will consequently be discharged through the service-main under greater pressure, and itwill only return to the original pressure when less gas is consumed, thus allowing a greater quantity of gas to enter through the valve 0 than is required for consumption. The gas thus entering under a higher pressure will instantaneously exert its pressure beneath the roof of the float-chamber, closing the valve C and at the same time,'by lifting the rod E and the cross-head G return the arms G to a more horizontal position.

In order to prevent the gas entering at A under varying degrees of pressure from ex-' erting any pressure upon the valve 0 and thereby on the float-chamber B, I construct the valve-chamber in the snbstantially-conical form shown, the vertical projection of which cone is equal to the superficial area of the valve 0 thereby making it in itself a counterbalance-valve, as will be understood. In case the superficial area of the valve is O, the chamber 0 will'become a cylinder.

The operation of the automatic pressure-adj uster will be understood by reference to Figs. 2, 3, and l. The rods F swing around the points 2, while the rod G swings upon the points 3". The points 4 and 5 remain at all times in the same horizontal plane. WVhen the float sinks, and thereby causes the shaft E to descend, the weight will be increased gradually until the point 3 reaches the point 3, at which it will attain its maximum pressure, as shown by the position of the point 3", which is about onehalf the distance between the extreme points 3 and 3, the angle of pressure being lessened at this point about fifteen degrees. Figs. 3 and 4 show the variations in the angle of pressure occasioned by the lengthening or shortening of the arms F? and G by means of the turn buckleff, as will at once be evident.

While I have described the valve-chamber O as conical in form,and prefer such construction, I do not desire to limit myself thereto, as it is evident that the form of the chamber may be modified or changed without departing from my invention. Instead of using turn-buckles for changing the length of the arms, any other suitable appliance adapted to the purpose may be substituted.

It will be observed that the valve is arranged within the float-chamber near the top thereof, and is readily accessible for repairs or other purposes by reason of the top of the dome being made removable, as shownin Fig. 1. This is important. 7

Having thus described my invention, what I claim to be new, and desire to secure by Let ters Patent, is

1. The combination, with the float-chamber and a removable top therefor, and a valvechamber in the float-chamber and having near its lower end an outlet communicating with the float-chamber, ofa valve within said chamber and accessible from the top of the floatchamber, substantially as and for the purpose described.

2. The combination, with the float-chamber, of a yalve chamber therein of increased area at its top and provided at its lower end with an outlet communicating with the float-chamber, substantially as and for the purpose described.

3. The combination,with the floatchamber,

of the valve-chamber therein having an outlet near its lower end communicating with the float-chamber and outlets from the valve chamber above the valve into the float-chamber, substantially as described.

4. The combination, with the water-tank and float-chamber, of a weight-support, an adjust able rod carrying said support and engaging the float-chamber, and pivoted connections between said rod and the watertank, and the roller G on which the weight-support rests.

5. The combination,with the water-tank and float chamber, of the vertical rod adjustably connected with said float-chamber, a weightsupport vertically movable on said rod, a crosshead on said rod directly beneath said weightsupport and sustaining the weight of the same, arms pivoted to said cross-head, and arms F, pivotally connecting said arms with the watertank, substantially as described.

6. The combination, with the inlet-pipe, of an outlet-pipe inclosed within the same and a valve attached to the upper end of the outletpipe and serving to close the upper end of the inlet-passage, as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

FREDERICK BREDEL.

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