US865880A - Dry-pipe valve. - Google Patents

Description

PATENT'ED SEPT. 10, A1907.

0.3. GARRETT. DRY PIPE VALVE. APPLIQATION IIILED JAN. 24. 19`05.

' 2 SHEETS-SHEET 1 PATENTBD SEPT. 10, 1907.

C. -B. GARRETT.' DRY PIPE VALVE. .APPLICATION FILED JAN. 24. 1905.

UNITED Sra'r s. si*

NT OssIfOE.

oIIABLES B. GARBETT, OE MINNEAPOLIS, MINNESOTA ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, To THE GLOBE AUTOMATIO SIBINKLER COMPANY, OE MINNEAPOLIS,

MINNESOTA, A CORPORATION OE I/IINNESOTA.

Blijf-PIPE VALVE.

Specification eit yLetters Patent. l

Patentes sept. 1o,` 1907.

Apparition sies January 24,1905. sans No. 242,501.

' vented certain new and useful Improvements in Dry- Pipe Valves; and I do hereby declare the following to be a full, clear, and enact description o the invention, such as will enable botllers'skilled in the art which it appertainsto make and use the same. l

My present invention relates to dry pipe ire extin. guishing systems, and has for its especial object Ato imf prove the construction oi that type of drypipe valves set forth and claimed in my U. S. Letters Patent No, 831,054 issued of date Sept. 18th, 1906,'dry pipe valve.

The invention is illustrated in the accornpanying drawings, wheiein like characters indicate like parts l throughout the several views.

Referring to the drawings, Figure 1 is a vertical section, taken centrally through a dry pipe valve embodying the several ieaturesoi my invention. Figl.-.2 isa positions oi the parts; Figs. 3 and 4 are detail views in side elevation, showing a circuit closer of an electrical alarm device, and also associated parts for operating the a same; Fig. 5 is a section on the line x5 x5 of Fig. 4, show ing also, in diagram, the alarm circuit. Fig.- 6 is a sec tion on the line zo :1:5 of' Eig. 2; and Fig. 7 is a section on aline $7.957 of Fig. 2. Y v I The body l yof the.' valve casing or shell is interposed in, Aand forms part oi a vertical conduit or riser 2 oi the lfire extinguishing system, and is formed with three valve-seat-equipped openings 3, 4 and 5. The valve seat 3 constitutes the water inlet passage, and is located in the bottom of the said casing orshell 1. The valve seatfl affords the water outlet in the casing, and islocated in an inclined upper wall l, which divides the casing into two compartments. .The .valve seat 5 is located i'n oneside of the casing, and serves a purpose vwhich will hereinafter appear. Thevalve seats 3, 4

and 5 are adapted to be closed by valves, which may be treated respectively as the water inlet valve, the water outlet' valve, and the intermediate or vent Naive. The water inlet valve discarried by an arm 7 iulcrurned to a bearing 8 securedfto, and within, the casing 1, at one side oi the valve seat 3. As shown,'said valve 6 is prol vided with a nutted stem 9 that works loosely through the srx'n 7, said arm 7 is provided with a plurality of set screws 10 that press upon said valve, and hold the same firfrnly seated when the free end oi saidarrn 7 is pressed d" wnward. The water outlet valve 11 is carried by, and has a slight 'pivotal movement on an arm 12, pivoted to ,a bearing 13 rigidly secured on top of the wall or partition 1*.V ,0n its underface,c the valve llis prowith a @sastre block si an abutment 14 sans adapted to be set and held in different positions, by an adjusting screw 15, seated in a lug on said valve. l v A tripping lever 16 is pivoted at its lower-end, to a bearing 17. Near its pivoted end,`the lever 16 is provided with a projecting heel or lug l18 that normally presses against the ree end oi the valve arm 7, to hold said valve closed., The free upper end of this tripping lever terminates at such point that it will engage the cam block or abutment 14 oi the valve 11, when the two valves 6 and 1l are in closed positions, as shown in Fig. 1. The intermediate or vent valvel 19 is carried by the tripping lever 16 and, as shown, is pivoted thereto at such point that when the tripping arm movesl into the position shown in Fig. 2, it will closel the vent afforded by the valve seat 5. A suitable connection, such as a chain 20, is attached to the ventryalve 19, is passed out- Ward'through the vent or valve seat 5, runs over a @ride sheave 21 on a bracket 22, rigidly secured to the casing 1, and, as shown, is attached, at its outer end, to a head-- edbolt 23T A plurality o i weights 24, placed on thev head of the bolt 23, put the trip arm 16 .under a strain which tends to open they water outlet valve l1, and to close the vent valve 19, all as will hereinafter more fully app ear.

' To the ree endoi the valve arm 7 is pivoted a gravity I shown, follows the path of movement of the free end of the arm 7. Thenumeral 27 indicates a spring latch which, when the aun 7 and valve 6 are moved into the extreme position indicated by dotted lines in Fig.- 2,

springs in iront of the free end o said lever 7 and pre vents the same, and said vvalve 6iro1nifalling back into or toward their normal positions.

The numeral 28 indicates a spring buffer, secured within, and to one side, oi the casing, in position to engage the stem 9 ofthe valve' when the said valve is thrown into its extreme open position. A second valve intercepting lever or arm 29 is pivoted at one end to the upper portion oi the guide 26, and at its'other end is attached, at 30, t0 the intermediate portion of a chain or v other flexible connection 31. One end of said chain 31 is anchored at 32 to the web lg of the casing, and its ether end is attached'at 33 to the reeend of the tripping lever 1G. The'int-ercepting arm 29, the chain 31, the trippingdever 16, and the cam abutment 14 of the water outlet valve 11, are so related that 'when said trippingr nrm is movvd into the position indicatvd in Fig. 2, snid intvrvvpting nrm :Z9 will vngnge said abutnn-nt nntl pos-iiivvly hold sttid valve opvued to a com.

sidvrnhltl vxtvnt. thvrvhy prvvvnting rvsvating of said rnlrv ll -in'tvr it hns onvv hvvn opvnvd. The importnnvv ol' th'v vnlvv-inlvrvvptirg dovivvs jui-ist dvscrihvd will hv hilly stntvtl in thv dvsvription ofthe opvration.

hnnd-hnlv opvnintr. n. primvr pnssiigv. and a. tvst tube pnssngv. whivh opvnings itrv lovntctl in thv upper vompzt-rtnlvnt lnlY thv vnsinl. und m'v normally Closvd. The nmnvrnl Il? ndivntvs at. small pipv whivh lvttds from the tippt-r vontp-.trt nn-nt. of thv vus-ing to n prvssurv ugo (not lshown t. 'l`hv nnmvrn-l 38 indivtttvs :t dvtuvhzthlv,housing. whivh'is npplivd to thv vusing l und invlosvs thv `gnidv shv-.irv l, thv wvights 214. und othvr associated pnrts.

'I`hvy vlvvtrivnl nrm circuit vomprisvs lvztds 3S), zt hat; tvry `ll). :tn vlvvtriv hvll 4l, and vontnvts 4t2. Tllv vontztvts L'l2 ztrv, as shown. svvurvd to :tu insulating hlovk 43, whivh, in turn, is svvurvd to thv vnsingl slightly hvlow. :tnd `slightly to onv sidv ot' thv ontvr lvnd o thv vulvv svttt 5. Normally thv cirvuit is hrokvn bvtwvvn thv vontnvts 4:2, hut is :tditptvd to hv vlosvdhy a. `mvtnllit` hlttdv 44 pivotvtl to n. Lv-.iring 45 on the insulating hlovk (iii. Thv gliidv shvztvv 2l is svcurvd on v. short shaft 4H Whivh vtrrrivs, :tt nnv vnd. n tppvt 47 whivh, whvn -movvd, from thv position shown in Fig. 3 into thv pvsition shown in Fig. -l, strikvs said hl-.tdv 44. forvvs thv samt` hvtwvvn thv vontzwts 42, :tnd vlosvt-t thv ulatrm virvuit, thvrvhy sounding im alarm. y

(lpvntt it in. Iu vztlvvs of thvvhamtvtvrtthovvdvsvrihud, .whvn thv wntvr inlvt :uid ontlvt. vnlvvs uro'vsuddvnly opvnvd. :is will hv thv vnsv whvn Onv or morv spriuklvrs ttrv thrown into :it-tion. :ind thv :tir prvssurv ou thv wattvr ontlvt vttlvv is dvvrvnsvd. thv wtttvr will rush rapidly up into thv risvr und, hy :tvqnirvd motnvntntn; will `in vrvnsv thv nirprvssnrv in thv risvr to snvh nu vxtvnj that lhvrv will hv prodnvvd :t rvvvssion or h-.tvkwn-rd flow 0l' ltltv volnmtfol wittvr. listin-ily thvrv will hv Svvvrttl w-.tvvs or rvrvrsv vihrntions produvvd in thv risvr hvfnrv thv nir ttnd thv wittvr prvss'urv is vqunlizvd. nud hvfurv thv nir hns hvvn vutirvly vxhnnstvd from thv rsvr. Ilvnvv. unlvss snniv mv-.tns hv providvd for prvvvnting,Y thvsv vn-lvvs from living nuttin svntvd, ntvrthvy ttrv onvv opvnvd, thvy will hv ptnmdvd upon thvir svnts to `snvh :in vxtvnt tlntt usually thvy will not form tight joints wit h thvir svnts in'tvr onv opvning hns tttkvn plnvv. l"nrthvr|norv, unlvss moans hv providvd for prvrvntng` simultttnvons rvsvttting ot' thv wtrtvr inlvt :ind ontlvt.

ol thv nir; :tud to thv dillvrvntinls ol nrvtt ot' thv uppvr :rnd lowvr portions` nl' thv \'.tlvvs, is liithlv to rvsult in wh-.tt is known :is wntvr voltimn. :t vondilion htmiliur to thosv l'nmilinr with tirv ,vxtingnishing systvms.

'l`hvsv litnitntions to thv propvr nvtinu ol' n Iirv vxtinf partxnvnt of the casing] :md in thv nppvr portion ot' thv risvr. Whvn thv said valvv l1 is hvld vlosvd. its nhutmvnt 14 holds thv tripping lvvvr lt in thv position iudi- Catcd in Fig. I, und thv'sztd lvYvr. in'turn. holds thv vent valve Il) in un opvnposition. :1nd holds thv watt-r inlet valve 6 in :t vlosvd position. Whvnvvvr thv air pressure on the valve l1 is rvdnvvtl hvlow n prvdvtvrmined point, dvpvnding on thv nmnhvr of wvightst npplivd tothe outer vnd ot' thv vhain 2UN thv stratil pre1 duced by thv tipplivd wvights 24, acting throngh the vhin 20, vand on thvtripping lcvvr 16, vtntsvs thv said lvvvr to foijvv thv waiter outlvt valve 1l opvn, with a comming action, and to movv into the position indimtvd in Fig. }2 nd thvrvhy C2i-uso the vvnt vnlvvV I9 to vlnsv thv vent 5 and rvlvusv thv water inlvt volvo 6. This movvmvnt of the tripping lvvvr I6 Straightons out thv chain 3l and ntovvs thv intvrc'vpting arm or stop 29 into u position to vngngv the abutlnvnt ifi and positirvly prvvvnt thv wntvr outlet vulve Il from rtg-.1in being tlosvd.

In Fig. 2, thv wuteradmission valv'e is, hy full linvs, shown as having bvvn released, but as not. having yvt hvvn opvnvd hy the upward prvur of witter in thv lowvr portionof 'thv risvr. tvr prvssnrv hving applied to thv said inlvt vnlvv, sind thv snid vnlvv living rvlvnsed, it would be thrown immvdintvlyinto thv vxtrvme open position, and will tnppvt. -l7 to mow thv contact. blad'v 44 into'thv position inditatvd in Figs. 4 und 5. thvrvhy closing the alarm vircuit, and actuating the alarm.

From what has h vvn saith-it will be undvrstood that the valve xnvvhiinism dvsvribqd-s capable of ntotlitiozttion within thv. scopo `of my' invvntion :ist hvrvin svt l'nrth and vlttimvd. I Y

What I vlztim und dvsirv to secure hy Letters Patent of thv Unitvd Sta-tvs is :is follows:

1. In n dry plpv vnliv. n tasint: forming part ot' the conduit of n tirv vxtlngnlshlng systvm. and' hurluf.: thrvv opvnlngs. thrvv svpnrntv und indvpendent rnlvvs adapted to opvn und vlnsv snld thrvv openings, means t'or opening onv of snd vnlvvs nntLvlosIni; imother, und nivnng for prvvvnttnp: thv rv-vloslng vnt the opened -vnlvv snhstnw tnlly ns dt'\svrlhvd. A

In n dril pipt,\'i1l\'v, u vnslnt: forming pnrt of a vonlntI ot zr lrv vxtiugnlshing: systvm und lntvng thrvvl opvnings. thrvv rllrvs svpnrnte und lndvpvndvnt for openn: nml vlosln'.v snld thrvv npvnlngs two thvrvof hvtng normally vlnsvtl, nnd thv third helm: normally oprvn. invnnu vnntrollhn.r thv ,npvulng of sntd two normally vlosvd rnlvvs nud lor vloslng; snld n ornmlly opvn valve. und nn intvrvvpthn: dvvivv for prvrvntlng thv rv-vloslnie; of onv nud uutlvt valrvnl und lntvt'veptlug dvrlves for tirata-outing usually hv vimght. and held in the position indicii'tvd hy l lli) `,iending to 5f" mounted on n iixed support, connected ty said tripping in a dry pipe vulve, the combination with an inlet I valve normally holding buck the water supply. of an air sented outlet valve normally closim,r the water outlet, an f oscillating tripping lever for opening said secondary valve,

and for norm-.illy holding' said inlet valveclosed. means move said lever. und un intercepting arm lever; and movitble thereby into a position to prevent re closing of said outlet valve, substantially un described.

il. in n dry pipe vulve, u combinati n with un inlet valve normallyv holding buck the water/supply, of an air seated outlet valve normally closing the water outlet, an oscillating trippingdever openingy said secondary valve and for normally holdingr said inlet vulve closed, menns tending to move said lever, und un interccpting' arm pivoially mounted on nixed support, connected to said tripping-lever by :1 iiexible conneciiox/o end oi? which is nnchoredsaid lntercepting arm copernting with a cam abutment on said outlet valve to prevent ret-losing of suid/l vulve, substantially as described. f

7. in n dry pipe valve, the combination with a water inlet valve normally holding baci: the water supply, oi' an nir sented water outlet valve, un sir vent in the casing of said dry pipe valve, un oscillating tripping lever ioreeptini,r device coliperating with `011e o the two normally closed vulves to prevent rcclosing thereof, substantially :is described.

8. in :1 dry pipe vulve, the combination with a water inlet valvonormuliy holding haelt the water supply, of an nir .sented water outlet valve, an air vent in the casing of 'unid dry pipe vulve, nn oscillating tripping lever for opening said outlet valve and for hoidingjsaid inlet valve elosedjs. vent valve curi-led by said 'tripping lever, the movement of which tripping lever serves to open said out let valve and close said vent valve, aud interc`epting devices coperuting with said linlet and outlet valves, to prevent reclosing thereof, substantially ns described.

9. in u dry pipe valve, the combination with an inlet valve normally holding hack the water supply, of a pivoted lever to which said valve is applied, and an intercepting nvm pivoted to Suid lever and having such length when swung,r downward, upon opening said valve, a predetermined amount, it will bold said valve against reeloslng,

substantially as described. A

14). in a dry pipe vulve the combination with a valve normally holding baci'` the water supply, of a pivoted und outlet vulves, substantiallyr :is l

lever in which said valve is applied, means operative on -suid lever for hoiding said vulve closed and for releasing the sanne, and n yielding latch in the path ot movement` of the free end oi' said lever, operative thereon to hold said valve in a "vv/ide open" position, substantially as described.

il. In a dry pipe valve, a casing forming part of a conduit ot n tire extinguishing system and having three openings, two valves normally `closing two ot said openings, a

normally open vent vulve for closing the vthird opening, a.

lever to which said ventvalvc is applied, normally operan ing to hold said inlet valve closed, and itself normally held against movement by said inlet valve, a shesvev mounted outside of said casing, a weighted connection running .over said sheave and attached to said lever, for moving the sume when released, and :1n electric alarm device having the circuit closer directly connected to said sheave and arranged to be operated by movement of said sheave, and when said lever is released, substantially as described.

12. The combination with n casing forming part of n conduit, of an inlet vulve normally holding back the Water supply, a pivotcd arm, to the intermediate portion of which seid inlet valve is applied, and a segmental guide fillowlng the path of movement of the 'free end of said vurm and limiting the lateral movements of said rm, substantinlly as described.

13. The combination with a casing forming part of a conduit of a tire extinguishing system, ot un inlet valve normally holding back the water supply, an arm plvoted' at one end within said casing, and to the intermediate portion of which said inlet valve is applied, a segmental guide following the path of movement of the free end of said arm and limiting the lateral movements thereof, a latch applied at the upper extremity of said guide, for operation on the free end of said arm, to hold said inlet valve open, and un lnterceptlng arm pivoted to the free end of said valve-carrying arm, substantially asdescribed.

14. 'the combination with a casing forming part of the conduit of a lire extinguishing system, and having inlet and outlet passages, inlet and outletvalves normally closing said passages, a plvoted arm, to the intermediate portion of which said inlet valve is applied, a segmentall CHARLES .13. GARRETT.

Witnesses R. C. MAsnr, F. D. MERCHANT.

in presence

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