US1118346A - Water-glass. - Google Patents

Description

L. B. HOWELL.

WATER GLASS.

APPLICATION FILED JAN.20, 1913.

Patented Nov. 24, 1914.

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LESTER B. HOWELL, F WILMINGTON, NORTH CAROLINA.`

WATER-GLASS.

To all whomt may concern Be 1t known that I, LESTER BRYANT HOWELL, a citizen of the United States, residing at Wilmington, in the county of New Hanover and State of North Carolina, have invented certain new and useful Improvements in VVater-Glassesj; andI do hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to emergency valves "as applied to boilers, and an object of the invention is to provide means for automatically injecting water into the boiler when the water in the boiler has reached a prep boiler `ried by the water in the glass,

determined depth.

A further object of the invention is to equip the ordinary water gage of a boiler with means for automatically actuating an injector for the purpose of feeding water to the boiler. p

` With these and other objects in view, the invention consists in certain novel features of construction as hereinafter shown and described, and then specifically pointed out in the claims.

In the drawings, where similar reference characters designate corresponding parts: Figure l is an end eleva-tion of a locomotive showing improvement connected thereto. Fig. 2 is an enlarged vertical central section through the water glass.

Corresponding and like parts are referred to in the following description and indicated in the views of the drawings by the same reference characters.

Boiler explosions are frequently caused by the evaporation of all of the water in the boiler, this condition resulting `either from an oversight on the part of the attendant or from wilful neglect. W'hatever the cause however, the almost invariable result of low water is an explosion, and to overcome this,

`my invention aims to associate with the water glass a mechanism which will positively prevent the complete evaporation of water in the boiler. In accomplishing this result, I provide a glass having` a float caran in]eetor or other steam-actuated means for forcing water into the boiler, and a valve actuated by the float and throwing the injector' into operation.

Referring to the drawings, it will be seen that a boiler 1, which may be stationary, or

Specification of Letters Patent.

a water gage f2.

.and are provided with suitable Patented Nev. 24, 1914..

` Application` filed January 20, 1913. Serial No. 743,145.

type, has connected thereto The lower end of this` water gage is of the usual construction, having a water communication with the water of the boiler. The upper part of the gage is also of locomotive formed as are ordinary watei gages,ibut has added thereto a closure 3 secured to the glass of the gage and having therein a passage which may communicate by any suitable pipe -l with the steam dome of the boiler. Screwed upon the closure is a cap in the form of a hollow nut 5, the chamber 6 thereof communicatingby means `ofxa pipe `7 with a suitable cylinder 8. The closure 3 and the nut `.3 are secured tightly together, packing for preventing the escape of steam. A fioat stem 9, the lower end of which is provided with a float 10, passes slidably through openings 1l and l2 5, respectively, the prevent the escape of steam. Near the upper end of the stem 9, is provided a groove 13 of a length less than the distance between the top of nut 5, and the bottom of closure 3, but of greater length than the thickness of the closure. Vhile this particular form of opening 13 has been shown, it is to be understood that various other designs inay be formed in the stem to accomplish the saine result. The cylinder 8 has mounted therein, a piston lll, the piston iod of which is pivotally connected t0 one end of a pivoted link l5, while the other end of the pivoted link l5 is connected in any suitable means to the handle of a steam injector 16. In the operation of this embodi-` ment of the invention, it will be seenthat when the water falls in the gage, the Heat 10, which does not necessarily fit steam-tight against the walls of the gage, will descend with the water until the lower end of the groove 13 passes below the lower surface of the closure. As soon as this last-described condition takes place, steam will pass from the steam dome through the pipe l and passage, into the watei gage, up through the groove 13 into the chamber 6 formed in the nut 5, and out through the pipe 7 to the cylinder 8, the steam acting upon the piston l-l to force the same outwardly for the establish communication between the cham-` ber 6 and the upper end 25 of the housing which forms an exhaust Jfor the steam behind the piston 14 so that the injectorstarter can return to its normal position as shown in Fig. 2. Thus it will be seen that as soon as the water reaches a predetermined depth in the boiler, and water gage, the injector is set into operation for forcing water into the boiler.

By preference the water gages are surrounded by a suitable casing 24 which serves to protect thevglass or' the gage. a housing .25 can be erected upon the nut 5 for the protection of the upper'end of the vstem 9 to prevent the same from becomingy bent through accident and thereby destroying the steam pipe fit which is necessary to the operation or' this device. I have shown no particular type of injector, insoinuch as any of the approved forms can be used and I do not wish to be limited to the specific means shown 'for starting the injector by means of a system of lever.

Having thus described the invention, what I claim as new is: 1. In a device of the class described, the combination with a gage having a closure Copies of this patent may be obtained for It desired,

at its upper end provided with an opening and with a passage communicating with the interior of the gage, and a pipe leading from said'passage; of a float within the gage, a stem rising from the same through said openingand having a longitudinal groove whose lower end is adapted to enter the gage when the water therein falls, a cap screwed upon the closure .and having anv opening through Awhich said, stem passes,; said cap also having an internal chamber, and a pipe leading from this'chamber, for the purpose set iorth.

, 2. In a device of the class described, the combinationwith Aa gage having a closure at its upper end `provided with an opening vand with a passage communicating with the interior, of the gage, `and a pipe leading from said passage;- of a ioatwithin the gage, astem,` rising from the same through said opening and having a longitudinal groove whose lower lend is adapted to enter the gage when the water therein falls, a cap nut screwed upon the closure and having an opening through which said stemv passes,

.the top of the nut being spaced from the closure so that as such stem rises the lower end `ot'its groove is closed by the closure before its upper end is opened by the cap,

a pipe leading from the' interior of the cap,

andan exhaust mounted on the cap, -for the purpose set forth.

In testimony whereof I aHiX myV signature in presence of two witnesses.

LESTER B. HOVELL.

lVitnesses:

W. VVAKEFIELD, E. T. FENwIoK.

ve cents each, by addressing the Commissioner of Patents.

Washington, D. C.

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