US675513A - Safety-valve. - Google Patents

Description

Patented :une 4. 190|.

KAPLINGER.

SAFETY VALVYE. (Application med Oct. 11, 1900.)

(h l'odel.)

...HU mi Illllllllllll E Il M Hill III III WQKMLM 'pfoHRrsf'rmiv` H.KAPLNGERQF"JAMICPPLAIN,MASSACHUSETTS.

- srncrrrcarrcivremmg part-of Letters Patent No. 675,513, dated im@ 4, 1901. p appassionata ombper'imeoo. sentira. 32,735'. ditmaal.;

To a/ZZ whom/"it magnate/cern.- v .Y

Be it known that LCERISTIAN'II. KAPLIN-i GER, a citizen oftheUnitedStates, residing at Jamaica Plain, in the co'untyof Norfolkand State of Massachusetts, haveinvented a new and useful Improvement in Safety-Valves for rLocomotive or other Steam-/Boilerabf which y the-following isaspeeification.

My invention relatesprincipally'to those parts in such valves which regulatethe action of the valve sov as to avoid undue waste of steam in relieving theboiler.- This object I attain bythemechanism illustratedin the ac;l

eompanying drawings,fin which-'- Figure lis a central vertical ysection. of a valve embodyingmyinvention.' Fig. 2` is a plan or top view of a section of the same below the 'line indicatedby the arrow; Fig. 3 is a perspectiveinsection of the base of the valve and valve-seat. f Fig. 4 is a'perspective in section of one-halfthe circularlbracket which surrounds the spring-case and ysupports the relief-ring. Fig. 5 is a vertical section of the detached spring-case. Fig. V6 is a per'- spective in section'of half of one of the` concaved and perforated mufflerplates. y

The general construction of the 4valve coinprises the usual ,outerV casing zA, `which is screwed onto a base B, on ywhich is formed the valve-seat C.

D is the valve; E, the spindle; F., the spring;

G, the follower, and H the compression-screw Vfor adjusting the springF and.y which bears against the topof thefollo'wer G. v An outer cas= ingIincloses spring F and has a threaded neck I', which extends upward through an opening in the top of the outer casing, as shown, and` terminates in an octagonal top or head 12, by which it is turned. .This neck I' is threadedY into a clamping-piece J, having an inverted head J', and the body J is y.passed upward from the interior of casing, A through vtop A' thereof. Uponthe-body J is threaded a ring K, which is turned down" thereon ,against'the upper side of the casing-top A', and thus the top is firmly clamped between the parts K and J'. Above ring K is a cap K', which extends over all, and is threaded on thev top of part J. The compressing-screw H is threaded into the neck I'and is turned up and down therein to adjust the tension of the spring F, while the casing I has an up anddown adjustment 'the casing.

its threaded connection withpart J and for apurposewhich will be explained. The

casing I extends downward within casing A andaround spring F. and theupper part of valve D and terminates in an annular flange I3, as shown in Fig. 5; y l

j Upon case I are placeda series of concaved and perforated murder-plates L, L', L2, and L3?, Vso as to form two chambers M M, as shown, theV lower plate Lsre'sti'ng against shoulder N, while a ringN' is threaded onto the top ofthe casing vllagainstV the upper mufflerplate L.

The chambers thus formed may b e filled with ,anysuitable muffling material if deemed advisable or necessary. Below the mufiers there is attachedto the casing by bolts, asy shown and so as 'to have a slight vertical play, an encircling bracket P, which `has a collar fitted to the thickened portion of the casing'and secured by bolts Q, passed through slots in said collar and threaded into Below the collarthe bracket is enlarged in diameter and large openingsare made Vthrough the body, but'leaving materialv enough to support properly the annular bottom thereof, which also has a series ofV slots throughthe same, as shown` clearly in Fig. 4c, throughwhich slots screws Q' are passed and threaded into the relief-ring R, whichk surrounds the main valve D, a portion of the ring R' being suspended in an annulargroove in the base B. The bracket P rests upon a spring T, which surrounds the casing within the bracket and bears upon the flange I3 of the casing; The bracket and relief-ring R are suspended by this spring,` the ring in part surrounding the valve D just below the annular groove S in the valve outside of the valve-seat. The ring R under the construction and arrangement described acts automatically as an auxiliary to the main valve in regulating the v escape of the steam when the main valve is lifted by the pressure of steam againstthe force of the compressingL spring F.

The tension of spring F may be regulated above the valve-casing by removing cap K and turning screw H against the follower G until the required compression of the vspring is attained. Then blow-back space may be adj usted by turning the top I2 of the springcasing I, which will raise or lower the reliefmain 'valveis opened-l byqpr'orn'pt 'reaetionf when a yproper lamount..orboiLer relief has; -beenattained v' y3" onefofjv the series 'off-holes inftop-of .the-in ner-casingYandfhelds ithelatter against-;t`u"lt1 1 `V ing out ofadj ustmentgrV-hen `-the main-'valve wahren -bracket P 'is Attached, hf

y'vh'ich Vis threadejdlintothe'topofy v:threoute casing 'Tandy the ower.. e'nd of;l which" en -ter D and the auxiliary releffliingjR'are thus .adj usteditghe 17in g B, acted' on ",by V thev blQW.-y back agairfs-ttheresistance of. springT, will? automatically #open and expand.v the?I space;

through which the steam escapes'and contract' the saine again when the boilerfpressure-isj removed and infamore'prompt and sensitive.v

manner than tli'emorergidlyheldm'ainvalve act-s. This independent-"action of f the al1-X- 'iliaryval-veorre1iefring R, ywhich*thus au# tomaticallyregu lates the space through-which the .blow-.back steam Y escapes Whatever the adjustment of the main-valve spring-maybe, eonstiftuitesthe chief novelty of my present invention and serves vto lessen the WasteiofV steampressure and loss` of power when -the lemma .Y

l The combinatiomina safety-valve, Of'a baseprovided Witha valve-seat, a'valve pro-A vided withan annulargroove inits underl side and outside of the valve-seatj'means for pressi-Dg said valve toits seat against the pressure of steam beneath it, a ring surrounding said. valve and upheld by an elastic support which risvertically adjustable; and an outer casing inclosin g said parts, al1 substantially as specified.

l 2. The combination ,in asafety-valve, of a base provided With a valve-seat, a valve provided with an annular groove in its under v side,outside of said valve-seat,` suitable means for pressing said valve to its seat against the ercasinginclosingsaidparts, yall Subj 4st'e'anib'passage is enlarged by such pressure casing"4 A, 'provided-'With lan: vopening! AQ, throughy it'stop, andthreaded u-.ponbase B,Vv f having a valve-seat Other'eingf valve Dseated uponfsaidseaftand vhaving an annular'. groove Sin the under side thereof; a-depressin g-sprin g F arranged-tobear upon saidvalve;

an linclosing casey I 4pro'videdwith an adjust-f` ablescreW- neckl',which passes throughand, i f =abovethetop of. vthe outer casing.; 'a threads. 'ed.-thimble?J,which passes through lche top J x f iA 'of easing'Atc itsclamping-head J",,a collar K threaded'onto thimble J-.so as'y tocla'mp .,In'i Ve ty-valve,the combinationjxvith y hc-i'nelosed.-valvefseatyvalve, and pressurejfi vsprinfaofqjn auxiliary.ringf'arrangedlaround 'l Tandbelogw'iheannular,'groove inthe under, side-of the valve; andfsu'pportedupon a spring f f [softhat itgmaybe .slightly'depressed by the;3 aetion,"ofthe' es'Ca'pin'g-fsteam, whereby the 1 6o 1 i automati cal 1y,and reduced again 'when .the`V l boileris relieved, thus pro/mptlylavoidin g un,- Y 'j top A betvveenpartsKandJ; bracket 1:.r at h' f-tached Vtoeasingl by 'bolts Q, and having a slight freedom of Vvertical movements thereon whilere'stingupon a spring T,- supported upon a ange 113; and aring R suspended .from bracket?, by bolts Qand adjustable -1 verticallywith said easing I, and capable of j: depression upon the supporting-spring by the action of the escaping steam, al-lasand for the purposes specified;

CHRISTIAN H. KAPLINGER.

Witnesses:

EUGENE HUMPHREY,

U. MUIRHEAD.

Images