US305884A - Gage-cock - Google Patents

Description

(No Model.)

T. R. BINGHAM.

GAGE COOK.

110 805384. Patented Sept. 30, 1884.

Nrrs S'ra'rss ATENT' Fries.

GAGE-COCK.

To all whom it may concern.-

a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form, a part of this specification, in which- Figure 1 is a longitudinal section of my improved gage-cock. Fig. 2is a side view of the valve and stem.

This invention relates to that class of steamboiler attachments known as gage-cocks and it consists in the construction and combination of parts, substantially as hereinafter fully described and claimed.

The invention comprises a formation of the valve and valvestem such that while the valve is one adapted to close against the pressure it will be guided centrally in its movement away from and toward its seat. It further comprises a peculiar construction which guides the escaping steam or water in a direction which shall not injure or cut the valve-seat; further, an abutment or flange-on the valvestem to receive the thrust of the boiler-pressore when the valve-opening device is operated, and thus prevent the latter becoming battered; and, finally, the invention comprises certain simple and efficient opening and closing devices whereby the valve-stem is centered and given a direct axial movement in' operation.

In the drawings, A designates the rear section, and Bthe front section, of the gage-cock, the two being united by the threaded fitting c, as shown. Section A has the usual threaded exterior for insertion in a boiler-head, and has the central bore, d, contracted to a cylindrical passage or port, e,which at its outer end terminates in the valveseat f, as shown. G is the valve having the annular guide 72 behind it fitting in the cylindrical bore (Z of section A, so as to be capable of easy movement therein. Guide h is hollow and open at its rear end to admit the steam or water from the boil er, and next the valve G is constructed with "Pfi-CIEICATION forming part of Letters Patent NoQ305,884-, dated September 30, 1884.

Application filed November 16, 1883. No model.)

two or more ports, i, so formed as to direct theescaping steam or water in lines substantially parallel with the faces of valve G and seat f. By this construction when valve G is on its seat steam or water can escape only by passing'through the annular guide hand ports 0?, so that guide his always ready to fulfil its function of sustaining the valve on its true axis. The valve-stein it extends forward into section B, and protrudes through the central bore, m, of the latter, and terminates in the hard bearing-point n of agate, buck-horn, or other substance having anti-corrosive qualities.

On stem is, I form the flange or collar 0, so that when the valve is full open collar 0 will rest against the section B and to a great extent prevent undue leakage or escape of steam or water through bore m. The escaping steam and water emerge from section B at the nozzle or'portp, as shown.

At the front end section B branches into the two forks q, having-their faces parallel, form ing slides for the bearing-plate s, which is provided with top and bottom lugs, t, to prevent it from dropping out of place.

In the embrace of the forks q, I pivot the lever V, having the eccentric or cam 10 and the weight n, as shown. A stop-lug, r, on lever V engages with plate 8 when the leverV has been raised to nearly vertical, so as to prevent it coming to a position of balance or beyond, and thus I insure the gravitating action of the weight '0 at all times. In the normal condition the weight a will be about horizontal, the leverage then acting, by means of the cam w, to force the valve G to its seat f, in which position the gage-cock is closed. when necessary to test for level, the lever V is elevated,

'say,'to the position shown in Fig. 1. The

pressure of the cam w on plate 8, and thence on stem 7:, is relieved, and the boiler-pressure forces the valve G off its seat f. The steam or water passes out by ports 1 and port p. In all positions the valve G, though it shuts against the pressure, is guided and centered, so there can be no irregular seating of the valve in operation. The cutting of the seat by the escaping contents of the boiler is avoided by guiding it past the seat in parallel direction. The collar or flange 0 plays the double part of preventing leakagepast stem k; and a stop for the movement of the valve and stem to prevent injury to the operating devices;

. its bore e.

I claim as my inventi0n' 1. In a gage-cock having its valve seating against the pressure, the combination, With conical valve G and valve-seat f, of the hol- 10w guide h on the pressure side of the valve having inclined port or ports a substantially parallel with the face of said valve and seat, as set forth.

2; Ina gage-cock, the combination of the bifurcated section B, protruding stem k, plate 8, having lugs t, and pivoted Weighted lever V, having cam 10, substantially as described.

3. In a gage-cock having reciprocating stem 70, the combination therewith of the slidingplate 8 and pivoted cam-lever V, having lug r, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two Witnesses.

v THOMAS R. BIN GHAM.

Witnesses:

T. J. PATTERSON, M. B. OHAPLIN.

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