US1218661A - Water-gage. - Google Patents

Description

H. s. HUNTER 1 T. wATKlNs.

Patented Mar. 13, 1917.

2 SHEETS-SHEET l.

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H. S.' HUNTER 6L T. WATKINS.

WATER GAGE.

APPLICATION FILED IAN. 13. 1916.

Patented Mar. 13, 1917.

2 SHEETS-SHEET 2l HEIsTER s. HUNTER AND r'ii-ioiviiis wATKiN's, or riiiiiannmniii, ENNSYLVANIA.

WATER-GAGE.

Appli-cation led January 13, 1916.

To all whom t may concern.'

Be it known that we, Iiins'rnn S. HUNTER and Trioiiiis W'Ariiins, citizens Vof the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain newand useful Improvements in lVatenGages,

of which the following is a specification.

The principal object of the present invention is to simplify the construction and specic arrangement of water-gages now in general use with a view to enhancing the commercial value thereof. A further object of the present invention is to provide a water-gage so constructed that safety in its use is emphasized and wherein the probability of the reflex glass thereof breaking and the fractured particles scattered free of the gage parts, with consequent escape of steam, is reduced to a minimum. A further object of the present invention is to provide a water-gage wherein the necessity for the employment of usual packings is obviated. Other and further objects of the present invention reside in the providing of general details of construction and in the providing of specific arrangement, combination and connection of parts as will hereinafter appear.

The invention consists of the improvements hereinafter described and Vfinally claimed.

The nature, charcteristic .features and vscope of the invention will be more fully understood from the following Vdescription taken in connection with the accompanying drawings forming part hereof and in which: Figure- 1, is a front or face view of the water-gage.

Fig. 2, is a view in vertical section taken at right angles to Fig. 1.

Fig. 3, is a view in cross section, taken,

upon the'line 3 3 of Fig. '2, and drawnV to an enlarged scale. l

Fig. 4, is a. view inl plan of the inner face of one ofthe removable caps.

Fig. 5, is a face view of the gasket.

Fig. 6, is a similar view of the reflexglass. f Fig. 7, is a similar View ofthe backing element. l w

F A8, is aY top or planviw thereof, and

Fig. 9, is a view in side elevation of the backing element. t Referring to the drawings, there is disclosed ay physical embodiment of the invention designed in a'mode best known to iis at specification of Letters Patent.

serial No. 71,829.'

this time yfor practising the same. Obviously details of construction may be varied without departing from the fair spirit and scope i of the appended clainis. In the specific ein* the casing l0, is substantially D-shaped, see

Fig. 3. Top and bottom the casing'lO, is enlarged and annular and is tapped as at 1-1, each tapped portion being of a diameter at least equaling the body diameter. The tapped portions receive caps 12, and 13, which caps in turn are tapped to receive coupling pipes lil, and 15. The inner faces of the caps are counter-sunk as at 16, and are centrally apertured in register with the pipes 111, and 15. The front face of the casing 10, has therein an elongated slot or sight opening 17, through which a. reading of the gage may be had. The enlarged annular ends of the casing 10, at the rear thereof, are provided with squared offsets 18, tapped to receive set screws 19, for a purpose to presently appear.V Within the body 10, are located a flat gasket 20, of lead, a reflex glass 21, and a backing element 22, of brass. The flat gasket 20, is fitted against the fiat inner integral face of the body 10, and covers the same. The reflex glass l21, abuts against the gasket and in practice is assembled so that in width or thickness, it does notproject beyond the vertical medial line of the water gage. Abutting against the reflex glass is the backing element 22. In cross-section, this backing' element is of C-shape, or in other words, it is semi-tube like in contour'.` It is disposed within the casing so that the edges 23, thereof impinge against the reflex glass 21. VWith these parts in abutting position, assembled as shown inthe drawings,there is present acentral continuous yertical passage formed immediately between vthescored face of the re-V nient, jam nuts 241', beingY employed to prevent accidental displacement thereof. In this connection it is to be observeduthat the .face of the casing 10, isv integral part," in

Patented inail. i3, rait.

contradistinction to being a removablepface. rlhe lead gasket and reflex glass are positioned in abutting relation against such face and steam pressure which may be present within the water-gage is directly back of the refieX-glass with the result that pressure upon said glass is evenly distributed over the entire inner surface thereof. Consequently as there is no strain exerted upon the outer face of said glass, as by set screws or the like, the probability of the being fractured is reduced to a minimum. Even should said glass become fractured, such fractured parts will not be scattered frce of the body or casing, with consequent blo-wing out of steam, because no strain is present upon the outer face of the glass and an even pressure is maintained upon the inner face of the glass. By reason of the removable caps an unobstructed central opening is present through the casing 10, whereby the gasket, glass and backing element in their relative abutting positions may be readily placed within the casing and secured to place by the set screws 19. ln this connection, it is to be noted that said gasket, glass and backing element are of the same height and extend throughout sub-- stantially the entire height of the casing 10. The grooved face ofthe backing element top and bottom is recessed as at 25, in order to provide an enlarged upper and lower mouth for the central passage before described. The flat gasket of lead forms a relatively yielding member which lends itself to any irregularities of the body-face or refiex glass, so that when the set screws are adjusted to place a steam and water tight joint is effected between said parts, thus obviating numerous packings. 1t is to be noted in this respect that a shroud for the reflex glass is not required. By having the central continuous passage directly back of the reflex glass, the latter is maintained free of sediment or deposits, so that a clear reading of the gage may be had.

What we claim is:

1. A water-gage embracing an elongated integral continuous body having'a central passage therethrough, the central portion of which body is contracted and the ends of which are enlarged and internally screwthreaded, thc diameter of each threaded portion being at least equal to diameter of said central passage, said body having a fiat front face provided with a sight opening and having tapped portions upon the body back, removable caps each having an opening therethrough for partially closing the open ends of said body, a flat gasket within the body for covering the flat inner surface of the body face, a reflex-glass tted against said gasket, a backing element of semi-tube con- Uopies `of thisppatent may be obtained for tour disposed within the body to form a continuous verticalV passage directly to the rear of said glass and in alinemcnt with the cap openings, and set screws operative through the tapped rear of said body engaging the backing element to force said element, glass and gasket bodily against the face of the body.

2. A water-gage embracing an elongated integral continuous body having a central passage therethrough, the central-portion of which body Vis contracted and the ends of which are enlarged and internally screwthreaded, the diameter of each threaded portion being at least equal to diameter of said central passage, said body having a flat front face provided with a sight opening and having tapped portions upon the body back, caps each having an opening therethrough for partially closing said open ends, a gasket of yielding metal within the body for covering the fiat inner surface of the body face, a reflex-glass fitted against said gasket, a backing element of C-shape disposed within the body to form a continuous vertical passage directly to the rear of said glass and in alinement with the cap openings, and set screws operative through the tapped rear of said body for engaging the curved rear face of said backing element to force said element, glass and gasket bodily against the face of said body.

3. A water-gage embracing-an elongated integral continuous body, the central portion of which is contracted and of D-shaped cross-section and the enlarged ends of which are of circular cross-section internally tapped to receive caps, said tapped portions being of a diameter at least equal to the diameter of said body central portion, said body having a flat front face having a sight opening, caps each having an opening therethrough for partially closing said open ends,

a gasket of yielding metal within' the body for covering the fiat inner surface of the'` body face, a reflex glass fitted to said gasket, a backing element of C-shape disposed within the body to form a continuous, verticalY passage directly back of said glass and'in alinement with the cap openings, tapped offset portions for the body adjacent the ends thereo-f and set screws operative through said off-sets for engaging the curved rear face .of said backing element to force the Vbacking element, glass and gasket Vbodily against the face of said body.

In testimony whereof, we have hereunto signed our names.

Y HEISTER S. HUNTER.

THOMAS WATKlNS. Witnesses:

WILLIAM J.. JACKSON, HELEN M. BYRNn.

ve cents each, by addressing the Commissioner fof Patents Washington, D. C.

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