US1875779A

US1875779A - Water gauge

Info

Publication number: US1875779A
Application number: US315804A
Authority: US
Inventors: Thomas N Thomson
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-10-29
Filing date: 1928-10-29
Publication date: 1932-09-06
Anticipated expiration: 1949-09-06

Description

Sept. -6, 1932. T. N. THOMSON WATER GAUGE Filed Oct. 29. I 1928 .IN'VENTOR ATTORNEY 5 to be trapped so that the water level within- Patented Sept. 6, 1932 UNITED STATES THOMAS N; THOMSON, or nnNriNqroN, nwyoRx;

WATER sermon Application filed October 29,1928." 'Seria1No;'31'-5, 804."

The present invention relates to improvements in water gauges, one ob ect of the 1nvention being the provision Of a novel form of gauge in which a colored liquid is adapted the boiler maybe readily observable through the gauge or sight glass of the-present device,

Another'object of this invent-ion is the provision of a novel form of sight glass supporting member in which is mountedatrap by means of which the indicating liquid, preferably a coloredliquid such as an oil, is heldtrapped within the member and the sight-glass so that the level within'the boiler 15 will be readily observable through the sight is readily interchangeable with the present type of water gauge on'boilers andwhich 1s simple, inexpensive and durable in construction and thoroughly efticientand practical in use. i

\Vith the foregoing and otherobjects in view, which will appear as the description proceeds, the invention resides in the com hula-U011 and arrangements 'of parts and 1n Cil the general construction hereinafter olescribed and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit'ofth'e invention,

In the drawing 1 Figure 1 is a sectional view through part of the boiler, tank or the like, with the present device attached thereto, the lower supporting member of the present device being shown invertical section;

Figure 2 1s a section taken on llne 22 of Figure 1; I

Figure 3 is a section taken on line 33 of Figure 1 Figure 4: is a sectional view through a modified form of trap chamber with an ordi- =tlie proper indicating level. 3

tion;

Referring to the ,the, numeral 5 nary of gauge it attached thereto ;and I forming amodificationfof the present invendesignatesthe boiler which is provided with 1 5 two superposednaligned:ports f6 and 7 :to

which are properly attached twor-respective supporting members 8 :and 28 ofxthe. present device. As the member 58 is identical in construction with the member. 8, a description of H one will suflice for'tbothl In the:lower or extreme end of thememberS is; a threaded opening 9 which receives a drainingvpetecock 10or asealing plug '10", .asmayzbe, desired,

a threaded Lnipple 11 beingxengag'eablerwith either one of the'openings 6'1or7 to attach the same to the boiler. vided, and alined therewith is :an 'interiorly A valve; seat, :12 is prothreaded portion 13 sealedzby astufling gland '14, whilea threaded portion 15015 a valve 16 is mounted in'the internallythreaded portion 13 so that a stem 16f ot-the valve :maybe operated through a.v handle a .17 to isolate I .the

:memberw8 or 8 from :the boiler;

An apron 18is formed integral withinthe member 8 and forms a trap so that the colored liquid contained within the member 8 will be prevented from enteringszthe boiler through the lowernipple 16, while formed in comniunication with thischamber'ischannel119opening through anexteriorly. threaded portion 20 of the supporting member. 1- The portion 20 is provided with anlinternal. shoulder 21 for the reception thereupon of one end of a sight-glass22, a packing ring23 andra nut 24" being provided, as is nsual,to properlysupport the glass in a'liquid-tightmanner.

' Inpractice, thel-lowercha'mber :8 is filled with the indicating liquid L upitothe base of the sight-glass 22,.thesamebeing' accomplished in any desired manner but preferably by removal of the *plug'10, the=valves 16 being closed so that no water from the 'boiler' can enter the chambersS-S'. The valves 16 are now opened to assume the'position as shown in Figure 1 "and the water within the boiler will then cause the indicating "liquidL to move upwardly in the'sight-glass to assume Where a colored oil is employed, the same being of less specific gravity than the water, the level of the indicating liquid will be slightly above the level of the water in the boiler, as clearly indicated in the drawing. WVhen the boiler water line is down near the base of thevsight-glass, the oil level is practically the same as theboiler water level. The differences between the exact water line indications are greater as the water line ascends, which is desirable in steam boilers.- I

In the construction shown in Figure 4, a member 8 is provided with a trap or apron which divides the member into two chambers and attached thereto is a lower coupling 26 of a usual water gauge now in common use, a valve 27 being of'the usual constructionand the sight-glass 22 being mounted in the,

usual manner. 7

- The boiler 5 is usual gauge-mechanism. This particular construction operates in a similar manner to the 1 construction before described, but is not asneat in appearance nor. as compact as the construction illustrated iniFigure 1, it being necessary to add to the upper end of the gauge glass a similar member, such as 8, or a coupling of the same horizontal length, this,

therefore, projecting the glass 22 farther away from the boiler than where the

members

8 and 8" are employed.

The member 8 isdisposed in a reverse directionfto the member 8 so that its trap 18 ,(dotted lines) will act as an air trap to prevent theindicating liquid from entering the boiler throughthe nipple 7, should the boiler water line rise to or above said nipple, but

will permitthe natural movement of the indicating liquid up and down within the sightglass.

By the use of an oil or, in fact, any colored liquid that may accomplish the same result and which is placed in the present device as above described, the usual dirt from the boiler which tends to soil the sight-glass'so as to prevent the easy reading of the water level is prevented from accumulating, and due to the fact that the indicating liquid is colored, the same is readily discernible without manipulation of the pet-cock 10, as is usual with the i ft) tion with the two members and into which the colored liquid rises for observation, a trap in the lower supporting member in line with the sight glass adapted to retain the colored liquid in the lower member and means on the I indicated as having the 'member 8 interposed between it and the in substantially a single line, and means on the lower member operable to drain the gauge. 3. A boiler water gauge including two superposed supporting hollow members, a

colored liquid in the lower member, a sight glass supported between and in communicationwith the two members and into which the colored-liquid rises for observation, a trap in the lower supporting member. to retain the colored liquid in the lower member, a valve in each supporting member operable tov cut off zcommunication of a boiler therewith and valve means on the lower member operable to drain the gauge. a

4. A boiler water gauge comprising an up per supporting fitting and a lower supporting fitting for a sight member of a water gauge, each of said fittingscomprising an elongated body providing achamber, an apron in each of said chambers and forming a trap therein; the apron in the upper chamber extending upwardly and terminating short of the upper 'wall of said chamber, and the apron in the 5. A supporting fittlng for a sight member according to claim 4 having a valve mounted on said body and operable to open or close the second mentioned opening.

6. A boiler water gauge comprising similar upper and lower supporting bodies adapted for communication with a boiler, a sight member communicating with the bodies, said bodies each having an apron providing a trap therein, the apron of the upper body extending upwardly and the apron of the lower body extending downwardly, an indicating liquid for travel in the gauge in advance of the water trap for observation in the sight member.

7. A boiler water gauge comprising similar supporting bodies adapted for communication with a boiler, a sight member communieating with the bodies, said bodieseach having an apron providing a trap therein, said i aprons extending in opposite directions, an indicating liquid for travel in the gauge in advance of the lowermosttrap for observation in the sight member, each body having an opening in one end thereof, the opening of one of said bodies constituting a filling opening, a closure for the latter opening, and drain means for the opening in the other body.

8, A supporting body of the class described having a body member, connections thereon at an angle to each other having first and second openings therethrough for connection with a boiler and sight member, respectively, an apron in the body member forming a trap, saidapron being opposite the first opening, a valve mounting portion on the body extending from the apron to the Wall opposite the second opening of a size to enable liquid to pass around the same to the other opening, and a valve in said mounting portion operable to cover and uncover the first opening.

9. In combination with a boiler, a water gauge fittinghaving a trap and an opening between the trap and boiler, a valve within the trap to close said opening, there being another opening between the trap and sight glass, said trap having a substantially vertical apron forming a tortuous passage from one opening to the other, and a tubular portion mounting said valve with its axis in line with said opening and extending from the apron to a wall of the fitting substantially as shown and described.

10. The combination of two boiler water gauge supporting fittings, a sight glass located between said fittings, and a colored liquid in the sight glass, each fitting having two openings one for communication with a boiler and the other with the sight glass, each fitting having a trap apron between the two openings thereof, said aprons having their free ends extending away from each other,

substantially as shown and described.

11. A water gauge for boilers, comprising a hollow body for supporting the upper end of a water gauge glass and a second hollow body for supporting the lower end of such glass, an apron in the first named body extending upwardly and terminating short of the upper wall of said body, an apron in the second named body extending downwardly and terminating short of the lower wall of said body, each of said bodies having on one side of the apron therein an opening for connection to a boiler and on the opposite side of such apron an opening for connection to a water glass, a water glass supported between and in communication with the last named openings of said bodies, and a colored liquid in said water glass.

In testimony whereof I have hereunto set my hand.

THOMAS N. THOMSON.