US1075881A - Water-gage. - Google Patents

Description

F. W. WALRAVEN & G. E. CALKINS.

WATER GAGE.

APPLICATION FILED AUG.7, 1912.

Patented Oct. 14, 1913.

00 I 1 )K Wilma/( 21.

(1LT Uni/ 12216.

Gum,

UNITED STATES PATENT OFFICE.

FRANCIS'W. HAL-RAVEN AND enemies E. o'llmr'ms, or Lets oksonvns, CANAL some.

WATER GAGE.

Spectfic'atitfin of Letters Patent.

application has au ust '2, 912. sesame-113,665.

Patenteo'0ct.14,113.

This invention relates to water gages for steam boilers, the object in view being to provide a simple, cheap, and reliable device of the class described to take the place of the ordinary glass gage now in common use, and provide a perfectly reliable and safe means of visually indicating the water level in steam boilers of all descriptions.

It is Well understood that the ordinary Water glass gages frequently burst, and on locomotives the engineers and firemen are often scalded by the hot Water and steam, and many have been permanently blinded by flying pieces of glass lodging in their eyes. Furthermore, water glass gages are not at all times reliable, inasmuch as they become discolored from sediment forming in the glass, thereby obscuring the water level from view; this often causesa false impression as to the level of the Water in the boiler, and results in a condition which may cause an explosion by reason of low water.

By means of the present invention, the objectionable features, hereinabove referred to, are entirely done away with, and the indicator is always in plain view, and the movement thereof varies with every change of the water in the boiler. Furthermore, large openings are practical, leading to and from the boiler. and are, therefore, not liable to become obstructed by scale and pieces of packing usually employed in connection with the glands of the boiler fittings of the water glass gage. After the device of this invention is installed, there is practically no expense of maintenance.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts, as will be hereinafter more fully described, llustrated in the accompanying drawings, and pointed out in the claim hereunto appended.

In the drawings: Figure 1 is a vertical longitudinal section through a water gage, embodying the present invention. Fig. 2 is a similar view taken at right angles to Fig. 1.

The water gage of this invention oomp'rises, in the preferred embodiment thereof, a vertical stand pipe or cylindrical body 1,

to which are attachedbase and cap sections 2 and 3, respectively, each of said sections being internally threaded, s shown, to receive. the adjacent e'xteriorly threaded end of the body 1. The base 2 is provided with a central openin 4 "extending downw'erd theret'hrough and internally threaded to receive a blow off nozzle 5 ada ted to allow any sediment to be blown ofi rom the gage in the usual manner. The base 2 is further provided with a laterally extending exteriorly threaded ni pie 6, to which the water connection from t is boiler may be fitted, in a manner well understood.

The upper cap section 3 is internally threaded to receive an exteriorly threaded plug 7, which is provided with a small central opening 8, through which the stem 9 of a float 10 passes, said float being of hollow construction, as illustrated in the drawings, and adapted to rise and fall in accordance with the level of the water contained in the body 1. Ordinarily the float 10 has the upper wall thereof thickened and internally threaded, as shown at 11, to receive the lower threaded extremity of the stem 9. The

plug 7 is further provided at its upper side with an internally threaded extension 12.

into which isscrewed a gland 13, beneath which suitable packing isarranged,as shown at 14,to provide a tight joint between the stem 9 to prevent the escape-of steam and water from the age. The gland 13 is further bored and t readed to receive the lower threaded extremity of a tube 15, which extends upward any suitable distance above the gage, and'is provided in one side with a longitudinal slot 16, in which works a small lateral extension 17 of thestem 9, as shown in Fig. 2. To the extension 17 is secured an indicator 18 which travels up and down against or adjacent to the outer face of the guide tube 16, thereby visually indicating to the fireman or engineer the level of water contained in the boiler and in thegage.

From the foregoing descri tion, it will be seen that the water gage of this invention is strong and reliable, and it is impossible for the indicator to become clogged or inoperative or unreliable, for any reason-whatever. Preferably, the stem 9 will be made quite small, so that there will be a minimum amount of friction in the reciprocatory movements of the same back and forth through the stuffing box, the tube 15 serving as a protection for the stem 9 to prevent the same from becomin broken, bent, or otherwise injured, when is ie float is in an elevated position. VVbat is claimed is: A water age for steam boilers, comprising a, cylin .rical body, base and cap sections having a threaded connection therewith and provided resiiectively with water and steam rts, a blow-ofi' nozzle leading outwardly tom the base section, a tubular casing extending upwardly from the cap section and provided with a longitudinal slot, :1 float in the cylindrical body movable back and forth between the steam and water 110115,; astem extending from the float upwardly within said tube and having a laterally extending extremity movable in said slot, and a sight indicator carried by the laterally extendinfv extremity of said stem and inovable along the outer face of said tube.

In testimony whereof We affix our signa-

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