US364756A

US364756A - Safety waterxgage

Info

Publication number: US364756A
Authority: US
Publication date: 1887-06-14
Anticipated expiration: 1904-06-14

Description

SAFETY WATER GAGE.

No.. 364356. Patented June 14, 1887.

15M i1 A.;

' l 5TH 'M P ./f) f 11\ 16 A l i 5 1Q- Witnesses. Inventor.

* UNITED STATESl PATENT OEErcE.

ARTHUR H. FOVLER, OF BUFFALO, NEW YOItK.

SAFETY WATE RGAG E.

lSPIE!CIFICATIN forming par-t of Letters Patent No.364,756, dated June 14:, 1887.

Application filed September 16, 1886. Serial No. 213,713. (No model.)

To all whom it may concern,.-

Be it known that I, ARTHUR H. FowLER, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Self- Closing Valves for Steam-Boilers, of which the following is a specification.

My invention relates to certain improvements in self-closing valves for steamboilers. Its object is to prevent the escape of steam or water if the glass tube of a water-gage or other device for conning the steam or water in front of ,the valves should break; and it consists of an automatically-acting stop-action valve, or valves'which'are instantly closed by the force of the escaping steam or water should the pressurein front ofthe valves be suddenly released, all of which will be fully and clearly hereinafter described, shown, and claimed, y reference being had to the accompanying drawings, in which I have shown the invention in connection with a glass `water-gage as a suitable device for illustrating one ofthe uses to which the invention may be adapted.

Figure 1 is a vertical central section through the valve, valve-cases, and glass tube, showing also a portion of a boiler to which it is attached. Fig.'2 is a section on line A B, Fig. 1. Fig. 3is a section online C D, Fig. 1; and Fig. 4 :is a section through line E F, Fig. 1.

The upper valve-case, 1, is provided with a screw-cap, 2, havinganut-section, 3, adapting it to be secured in place by a wrench in the usual way. Its object is to provide the means for inserting the tube 8 when required. I Theupper part of the case 1 is also provided with a valve-chamber, 4, having a valve-seat, 5. G represents the lower valve-case. It is also provided with a valve-chamber 4 and a valve-seat 5. At the bottom of the case 6 is l a small screw-cap or plug, 7, adapted to be valve-chambers 4, so as to give them a tendency to keep open, or away from the valvescats 5, while the device is in operation.

Through each valve is an opening, 14, into which the end 15 of the arm 17 passes. This arm 17 is mounted upon a shaft, 18, having the square portion 19 adapted to fit closely in the square opening in the arm 17, and thereby holdit rigidly in its position thereon. This shaft 18 is provided with a round tapering portion, 2l, (see Fig. 3,) the largest part of which is small enough to pass through the square opening in the arm 17.

22 represents another tapering portion similar to the portion 21. It tapers in the same direction, and is made of larger diameter. These tapering portions are adapted to tit in the bearings 23 24, (shown in Figs. 3 and 4,) and are ground so as to be steam-tight. lAt one end of the shaft or pin 18 is a nut, 25, for securing and holding it in place. At the opposite end is a nut-section, A26, .adapted to receive the handle 27 when it is necessary to open or close the valve by hand. The hole through the valves'is made long enough to permit a certain amount ot lost motion, so as to allow them to be shut automatically bythe action of the steam Without moving. the arm 17 should the glass tube 8 burst or break and permit the steam or water to escape.

Itwill be seen from this construction that the valves may be operated either by hand or automatically by the steam and water, and that in the event ofthe glass tube 8 breaking and suddenly releasing the steam and water therein the full force of the steam and water will instantly be brought against the back of thevalves and-cause them to move up the inhandles into the vertical position shown in said Fig. 1.

The object in placing the valves in inclined chambers is to cause them to keep away by gravity from the valve-seats, or to resist any slight pressure of steam or water, and conse- IOO quently to keep them open at alltiuies, unless closed by the sudden removal of the pressure in front of the valves or the breakage of the glass tube, as above mentioned, whereby the full force of the steam and water is brought against them.

The objeet of the handle 27 is to provide the means for closing the valves when the deviee iS in use, or to remove the valves from their seats when the breakage above referred to is repaired, so as to leave them in position to Work, and to allow the steam or Water to close them automatically should another release of pressure infront of the valve oecur.

I (lo not limit myself to the use of this de viee in connection with a glass water-gage; but I have shown it in this connection for the purpose of illustrating` one of its uses, as it is adapted for use for other purposes in connection with the use of steam or Water.

It will be noticed that the inclined valveehambers 4t are provided with an opening at the bottom, so as to permit the end 15 ot' the arm 17 to pass up through it into the recess or opening in the valves.

I elaim as my invention l. A self-closing valve set in a gnideway inelinng` from the valveseat downward and provided with an opening, 14, in combination with a shaft set in bearings within the valveease and having a handle, 27,1'oro1ieratingit, and an arm, 17, the end of which proj eets through the bottom of the valve-chamber L into the opening 14, and is made smaller than the opening, whereby the valve may be closed automatically by the force of the steam or water, or opened or Closed by hand, substantially as and for the purposes described.

2. A. gage for steam-boilers, consisting of two valves, 12 and 13, set in inclined guideways within the valveease and adapted to be open `while in their normal condition and to be automatically closed by the foree of the steam er water when the pressure is suddenly Withdrawn from the front of the valves, substantially as specified,

3. The combination ol' the tube 8, the eases l and 6, to vl'hieh the tube is secured, the inelined gnideways and valves 12 and 13, and a steamtight-1ltting` shaft provided with an arm for opening or Closing the valves by hand, as and for the purposes deseriber'l- ARTHUR H. FOWLER. Witnesses:

Jannie M. CALDWELL, Janes SANGs'rnR.