US273843A - hovey - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

G. F. HOVBY. APPARATUS FOR REDUCING THE DENSITY OP ILLUMINATING GASES. No. 273,843. A Patented Mar.13,1883.

(No Model.) 2 Sheets-Sheet 2 O. F. HOVEY.

APPARATUS FOR REDUCING THE DENSITY 01-" ILLUMINATING GASES. No. 273,843. Patented Mar. 13,1883.

I a. J Ifllllllllllllllllllllumm N. PflERs. Phmtrbllwgnphur. Washington. 11c

UNITED STATES ATENT OFFICE;

CHARLES F. HOVEY, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO THE GILBERT & BARKER MANUFACTURING COMPANY, OF SAME PLACE.

APPARATUS FOR REDUCING THE DENSITY F lLLUMlNATlNG-GASES.

SPECIFICATION forming part of Letters Patent No. 273,843, dated March 13, 1883,

Application filed May 22, 188-2.

To all whom it may concern Be it known that I, CHARLES F. Hover, a citizen of the United States, residing at Spring field, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in Apparatus for Reducing the Density of Illuminating-Gases, of which the following is a specification.

This invention relates to improvements in valve devices adapted to be interposed'at the point of union of a gas and ofan air current between said currents, as they tlow either into a gas-holder or to a point of consumption in a hydrocarbon-gas apparatus, the object being I to provide improved devices of this class for producing a proper mixture of said gas and air, and to so govern the gas and air passages in said valves as to cause the requisite proportions of said aerii'orm fluids to beadmitted to said holder or conveyed to the place of combustion.

In the drawings forming part of this specitication, Figure I is a view, partly in section, of an ordinary gas-holder and tank having 2 applied thereto a gas-and-air-mixing valve constructed according to my invention. Fig. II is a transverse section through the valvecase on lineg 3 Fig. I, but showing certain detail parts in full lines. Fig. Ill is a side ele- 0 vation of the mixing-valve with its air-inlet and cross-valve cover removed.

In the drawings, II indicates a gas-holder tank provided with a central vertical passage, m,and supported upon suitable legs, as shown,

5 to provide room beneath it for the gasand-airmixing valve, which is bolted to the bottom thereof, as seen in Fig. I. The gas-holderh is of the usual construction. The vertical and transverse lines marked a; through said tank 4.0 and holderindicate broken lines therein.

The gas-and-ainmixing valve consists of the case A, mainly of cylindrical form, provided with a flange around its upper end, whereby it is bolted to the under side of tank H, and

5 with an air-inlet and valve-box, D, and a gas- :inlet, B, opposite to said inlet D. Said case is also provided with an outlet, E, upon one side, near its lower end, for the outward passage of the mixed gas and air from the case A and (No model.)

from the holder h, and has two slots formed in its sides at the base of each of the inlets B and D, the slot at the base of inlet B being lettered s, and that at the base of D being lettered t. A cap, to, is screwed onto the lower end of said valve, making it gas-tight at that point. The case A is finished true and smooth in its interior, and has a stop-ring, z, fitted in its upper end, the lower edge of which is on a line with the upper ends of said slots 8 and it.

Two semicylindrical cut-oft valves or gates, c c, are fitted to move up and down in case A, in close contact with its sides and over said slots 8 and t therethrough. Said valves 0 c are provided with suitable converging arms, as shown, to support the two halves (l d of a central hollow 'hub, whereby a free passage is formed centrally between the valves 0 c to permit of an unobstructed movement of gas or of the contents of holder h downward toward the outlet E. Thecontiguousinner sides of said hubs (l d for a certain distance each side of their centers are parallel; but at each end. thereof they are of a hollow conical form. A valve-rod, 0, whose upper end is secured to the roof of the gas-holder h, has a conical formation, w, near its lower end, adapted to fit between the upper ends of the hubs d d, and from thence said rod extends downward between the parallel sides of said hubs, and sufficiently below their lower ends to permit of screwing a nut, cc, thereon. A cone-shaped plug, to", is placed on rod 6 above nut m and is by the latter forced between the lower ends of said hubs, and the same movement of said nut draws the cones between their upper ends. Thus by turning nut 00 the valves or gate-soc are caused to be forced laterally against the sides of case A, or that portion thereof surrounding the slots 8 t therethrough. closely enough to prevent the passage of gas or air between said valves and case, and to compel any incoming flow of said aeriform fluids to pass only through such portion of said slots as the position of said valves may leave uncovered. 5 A cut-off block, 0, is fixed to the side of the valve 0, and is adapted to fit closely against the opposite edge of the slot t in case A, and

is of the same thickness as the side of said case at this point, its outer face being in the same plane as the Hat face b of the valve-box at the base of the inlet D, as clearly shown 'in Fig. 111, and its upper edge is even with that of the valve upon which it is secured.

The face d of the aforesaid valve-box upon the side of case A, at the base of the air-inlet D, is finished to a true surface, and a fiat-faced cut-off valve, 1, is tightly fitted to said surface, and is adapted to be moved transversely across slot t (more or less) by the screw-rod c, which is fixed to turn in opposite sides of the valvebox without moving endwise. A nut, a, moves back and forth on saidv rod 0, and one edge thereof occupies a position between two upstanding projections on the back of valve '5, (one of which projections is shown broken off in Fig. I,) and between thelatter and said out a spring, f, is interposed, which operates to press valve '6 tightly against the face b.

The screwed inlet D, together with the valvebox, of which the latter is a part, is bolted to the face I) on case A. I

The rod 0, connecting the gas-holder IL with the valves 0 c, is adjustable vertically in the roof of said holder, to which it is attached, whereby said valves maybe caused to occupy any desired position relative to the slots 3 and t when said holder is down. The gas-holder may be weighted or counterweighted, as is ordinarily practiced, to adjust it to such pressnre as it is desired to maintain upon the supply and delivery pipes of the apparatus.

The operation of my improvements is as follows: The holder h and the valves 0 0 being in their lowest positions, leaving the slots 8 t open, the gas and air pipes, connected at B and D, are opened, letting gas and air flow through said slots to the interior of the valve, and thence out at the outlet E and up into holder it through passage m to such an extent as to cause the latter to operate vertically and to govern the position of the valves 0 0' within case A. The force of the pumps supplying the currents of gas and air and the weight of the gas-holder are, as usual, adapted one to the other, soas to keep up a supply-current through outlet E at nearly an unvarying pressure, he

the draft by burning more or less. The holder is welghted to cause it, under ordinary burning-pressure, to retain valves 0 c at a certain position relative to the lower ends of slots 3 t,

. and to leave .such openings through the latter,

when valve '5 lies partly over slot t, as are requisite for the passage of gas and air in proper proportions when the gas is of anordiuary or medium weight and richness; but when, as is often the case, the generator has been freshly supplied with gasoline, the gas becomes too rich and gives out much smoke, screw e is turned to draw back valve '5 and increase the air-opening through slot t, and when from the exhaustion of the gasoline at the generator the determined by the upward position of the former in slot t and the transverse position of the latter across said block and slot.

riable from time to time according to the regularity of the supply of gas and air and the quantity burned, so that the vertical movement of the holder increases and reduces the openings through slots 8 and t.

What I claim as my invention is- 1. The gas-holder h, the tank H, having a central vertical passage, at, opening into said holder, the valve-case A, secured to said tank under said vertical passage, and pro ided with the gas and air inlets B and D, and with the slots .9 and t in its sides, and appliances within said case A, connected centrally with said holder, whereby by the movements of the latter the openings through said slots are increased or reduced, combined and operating substantiallyas set forth.

2. In combination,the tank H,provided with the passage m, the holder h, the rod 6, secured centrally and adjustahly tosaid holder and provided with the conical part 90, the case A, having gas and air inlet slots in its sides, the valves 0 0, having the sectional hubs d d, the plug :0 and nut m substantially as set forth.

3. The case A,havingthe slot t therein, and provided with a valve-box on one side, having a valve-face, b, valve 0, having the block 0 thereon to fit between the sides of said slot, and having its outer face even with said face I) of the valve-box, the valve '1", having a bearing upon said face b and the face of said block 0, capable of adjustment, by means substantially as described, transversely across said CHAR LES F. HUV EY.

\Vitnesses:

H. A. CHAPIN, 1t. F. HYDE.

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