US1631438A - Valve shield - Google Patents

Description

June 7,5192?.

. M. SULLIVAN- VALVE SHIELD Filed Dec; 16', 1925 2 SheetsfShet 1 HIII ILIIII Maurice u'moam. wvmm WHY-messes I www a@ W y June 74,-;1927.

faf y l 1,631,438 M. SULLIVAN i VALVE SHIELD y Fil'c Deo. 16.l 1925 i 2 Sheets-Sheet 2 l; f la Maurice Sullivan, gwwmo@ attentats valves niountednpon' boilers and the like and"` arranged so Aas'to `enclose the valve structure and preventdania'ge'from the essas to prevent Patented June 17,

Mannion SULLIVAN, or BROOKLYN, :NEW vom;

-Appn'uon mea'necenber 16,1925, semina 75,811;

' Thekv presentinvention' relatesV Ato 4an iniproved valve attachment and has particular' valves andthe-like andint'eded' to conv fine4 tlieactivity of the 'escaping'steain so injury thereby tothe boiler covering. 'f'

A further objectoi" theinvention vthe provision' 'of a shield yattachment designed ,to be, readil'yfmounted in a'ssoci'ation with caping steam.

'the provision of housingadapted to' substantially cover the valve structure `and havf inglneans'iorthe lconnection of a conduct-1V ing, pipe adapted to'conduct thesteani esicapi-ng from the :valve orcondensation toal vsuitable reservoir.

fA'st-'ill further object 'of :the invention the 4provision of an attachment of the above character .designed to be lcomparatively part of this specilioation Vand 1n which like v l ,niefralld generally v designates ,the lovversection ofliny vimproved'valve Shield o-r lions-7:,

sirnple yet durable of construction andl vvliich maybe conveniently-mounted about a valve.,

ther 'objects and advantages .of the in ve'n'tion'will become appa'rentasftlie descrip?` tion progresses.

In the accompanylA reference ,cliaracters `are employed to; ignate corresponclinglparts throughoi'it the saine:

"ment comprising my invention Vshov'vn associfated with a boiler safety valve,. showing;

` the portion of a' boilerin cross section,

vture embodying inyinventi'on, i

Figure -3' is a transverse sectional vieiv taken on .theline 3 3 ofA Figure l,y

MFigure 4 is a vertical transverse sectional; View takenonthe line H otEigureqQ, and

Figure; 5V is a front elevational view et the assembled structure` forming my invent-ron, In thefdrawingsfxwherein for the purpose of a conventional type of steam boiler,-par

A sait further "Object or Y uit mennen Y r3:

ng drawings 'forming Figure I isa sde'elevation of 'the attach-`l ligureQQ` is' a topplan 'view ,ofithelstruc-- ticularly the type. conirnonly employed in locomotive construction. "This boiler is-proi vided with a flanged internally screw threaded opening' 11 `adapted for connection; of a suitable valve such as a `safety valve or the like. 'These boilers are usually covered with a jacket A l2 of asbestos or other heat insuer y I 'y eoA latingniaterial in order -to prevent unnecessary radiation of jlieateas vfar vas possible. As willbe understood by those familiar With ythe art, boilers, especially locomotive boilers, carry on 'the upper portions thereofsteam` valves lofl various types, known .as Whistle valves, Yand safety vvalve s,', thislatter type being manuallyV 0r autoniatically operated toy 'relieve' thejboiler when the vsteam pressure therein has reached an excessive degree.'

Upon operation of these valves',.the escaping i steam `frequently contacts lWith the boiler Jaclretor coverlngand causes'vrap'id deter1`o vent theescaping steaml contacting with the b'oil'er'j'acketso as' toquickly destroy this )rotectivecoverino. A common forni of safety valve oi the type commonly employed upon locomotive boilersis co-n'rventiona'llyshown at 13," this Avalve being usually .co-n! nected by a nipple with the flanged opening 1l of the boiler, or inountedon an auxiliary steain, dome` formed on the boiler, forth-is purpose W Referring now Lwith particulai-ity tothe rationthereo'l.- With this in 1nind,"niy in-V vention relates particularly tothe..provisionstructure embodying iny invention, thel n uthe top and rounded at the' lower edge, Formed on the bottoni. of thislower section lll ,and depending. downwardly' 'fro-1n the cen-- terthereofvis aboss l5l preferably of hexagonal formation, the purposey of which will The be described more iully hereinafter.y

*Thesell sections arefdesignedto be re"-v inov'abl'y connected`r and partially enclose the Vith reference V to nthe 10o of a cylindrical lreceptacle entirely open at.

central portion of this lower section is provided with an interior vertically extending valve. supporting. tube lool cylindrical formation, the lower `endol' this tube being formed integrally vwith thebottoin of theV l section while the upper extremity terminates slightly below the upper edge of the section. In order that the section may be securely mounted in position upon a boiler and also permit connection of the valve structure the lower central portion of the housing section 14 is provided with an internally screw threaded opening extending through the boss 15 which thereby provides a suitable connection flange. The upper extremity of the valve supporting tube 16 is likewise provided with an internally screw threaded opening adapted to permit connection of a valve. The lower end of the section 14 is provided with a laterally extending routlet nozzle ,17 provided with an internally screw threaded bore for connection with a suitable con-y ducting pipe 18. From the foregoing description, it is apparent that this lower housing section 14 embodies a receptacle of cylin- `drical formation provided with means for connection .on a boiler at the lower end. connection for a valve at the upper central portion and means for securing at the lower portion a conducting pipe communicating with the interior of the receptacle and arranged to conduct the exhausted steam or condensationl from the housing.

Referring now to the structure of the up per complementary section 15, it will be noted that this section is in the form of a substantially semi-spherical cover, the diameter of the sidewalls thereof being designed to permit telescopic connection of these sections. This cover section is provided with an annular flange 19 extending laterally from the body of the cover section and disposed somewhat above the lower open end thereof. .This flange is arranged so as to tightly'fit upon the upper edge of the lower section 14 for connection of the sections. The upper end of the cover section 15 is provided with a somewhat reduced'opening 20 about which is formed a raised reinforcing ring 21. Formed on the side of this upper section and extending diametrically from the upper'central opening 20 to the annular lflange 19 is a raised reinforcing` rib Q2, the upper portion being provided with a cenu tra] vertically extending slot 23, communieating with the central opening 20. This structure will permity the upper extremity of the boiler valve 13y to project slightly through the upper portion of the cover sec-Vy tion and permit the projection of the mov'- able valve operating arm carried thereby.

It is evident, from the foregoing description and the drawings, that a. separable hous- .ing structure is provided, arranged so as to be conveniently mounted on a'boiler so as to generally enclose the valve structure mounted thereon and designed to permit unrestricted operation of the valve when necessary; These housing sections are preferably formed of cast metal, such as steel and are designed to be durable and readily separated for disconnection of the valve.

tube 16 by the use of a second nipple 25,'

and the valve mounted in anelevated posi* tion thereon. been securely mounted in position, the upper cover section 15 is placedin position on the lower section, the connecting portions of the sections being properly machined to per.V mit a tight sliding connection. Thus the boiler valve will be mountedin la comparatively elevated position on the boiler and encased bythe housing sections. When the boiler valve 13 is operated, a portion of the steam released thereby will escape through the upper open portion of the upper hous ing section, and the remainder ofthe steam will be condensed in the housing. The

steam' which does not pass upwardly to the,

upper end of the housing will be conducted through the pipe 18 to a suitable condenser` or reservoir. The'escaping steam, however, will be prevented from contacting with the boilerjaclret or covering 12 so as to cause rapid deterioration of the jacket about the valve connection. It is readily conceivable,

After thesel members have loo that this will retain the boiler-,covering 1nA uniform .conditi-on and considerably reduce the cost of retaining the boiler in a properly covered condition. The utmost eliiciencyv of the boiler will also beretained in this manner, as the destruction of the boiler c-overing by the escaping steam impairs the insulafi tion effect of the covering and causes considerable loss of heat. It is therefore believed apparent, that the present invention provides aV structure which will be found extremely advantageous upon locomotives and similar boiler structures and thus creates substantial advancement in the art to which it appertains.

' It is to be understood that the form of my invention herewith shownk and. described is susceptible of modification and Vthat minor changes may be resorted to without departing from the vspirit of the invention or the scope of the subjoined claim.

Having thus described my invention, l claim: r

A shield for steam valves comprising a lower housing section of semi-spherical formation open at its upper end andV formed with a restricted opening at its lower end adapted to engage a support member, a valve supporting tube formed integral with and centrally in said lower section and provided with a screw threaded opening at its upper. end to accommodate ay valve, a later-k ally extending;1 drain nozzle formed at the lower end of the said section, a complementarycover section of' semi-cylindrical for mation adapted to be telescopcally fitted in the upper edge of the rlower section and having an annular flange formed adjacentl its lower edge resting on the upper edge of the lower section, a steam yescape opening,1

formed at the upper edge of the said cover Y section, and an arcuate slot formedin the, side of theupper section communicating with lthe opening adapted'tovaccommodatea Valve operating lever.

In testimony whereof I aIiX my signature.

' MAURICE SULLIVAN.

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