US1617415A - Fire-protective system - Google Patents

Description

Feb. 15,1927.V

- f 1,617,415* F. W. `PARSONS FlRB PROTECTIVE SYSTEM Filed Oct. 17, 1923V v25 SheetsvSheefcl r K 1 2 s, Il.

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F. w. PArsoNs FIRE PROTECTIVE SYSTEM Filed 9:11.17, 1925 l 3 Sheets-Sheets 'IT-.n.4

Snom/Vio@ Y alfanum Patented Feb. 15, 1927'.

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The present invention pertains to an improved system of lacing buildings and Workshops-,With Vfusible cables' in connection vwith fire alarm or protectivefdevicesj-the general- 5 object beingy -to minimize the irehazargds andsafeguard the buildings Yand the persons and propertyjvithin the buildings, preferablyusing a flexible vvirecabl'e vviltha multiplicity offusible bonds Such as vShown and l described vinmy'Letters Patent of tlietUnited Statesof America, No. 1,455,805, dated May In he eccempenyng drawings, Fgf 1 iS a cross-section and perspective viewgofaj building l'acedwith a thermalcontrolcable ,l according to my present invention. ItigjQ- illustrates a short piece ofcontrol 'cablev` and4 a vfusible bond therein.' Figs. '3 Vand are vhorizontal sectional views o gbuilding's'lac'ed v according Vto my present conception, an eleo- ,tric'al signaling circuitbeing diagrammatically shown in connection ,Withlthe'iusible cable circuits. f p i My invention involvesthe use ,of amelativelylong and flexible control element 'A having yfusible links 'or bondsv 2 at l`frequent `interval s therein andvr stretched taut' along the Walls and ceilings, underneath or behind Werk beneheefthreugh Yer Contiguous to, storage places, etc., in the 4rooms of, any

bnilding,. and this fusible; element is used.

in ,connection with a re protecting device or system, such 'fas Yan electricwsignaling {Sys- .temor alarm B, a fire door y 'or afsprivnklng device D, teeperate them eutemetieellynpon the outbreak of a fire, Thekcontrol element `A Wl'iichjlprefer to use comprises a twisted wire cable approximately "threey thirty 4seconds ofen inchin diameter made 4o in short sections with the Wire strands Ssep- 'y arably nterlaid at the z r1: 1e e tng ends Qf the respective `sections and united and bonded together With relatively small andjsmooth.

vbodies foflofw usng'solder ,Substantially @as illustratedin Figf2. f.

VIn lacing 1a groupV of l'factory buildings,

l or a buildinghaving corridors androoms,

or, partitioned sub-divisions, :I 'find `1t .advantageous .and useful to provide ,ai maincentrolj cable vvA and one or morer branch control ca- .bles A extending therefrom. Thesecables are supported to run freely' ,around small pulleys or v,sheaves 45 .mounted at' suitably vspaced intervals upon the ceiling', v Walls v-or other stationary partswithin therv building,

and the main control cableA is v,pr'eferably brnheeble fis hooked te a legA ,ef the bench and a detachablef connectionv may be oithe cables.

in the form of a closedfor' endless loopl to permit 1t to creep ,and shift under*repeated` nals infstarting' yandv stopping Work in a Wefkeeheperlplentf VThe main" cable A rstretched `taut ,and meiliteined. in it hebeendtieilfby- Ineensv` ef; e WeightC 6 having supporting sheave `"7 ,susneeded in, free-running ,eneefgemeet Within e eepnlementel loep 1 i111 the eidlleee eeble v A, and inFig. '1Ifsho'w,Weightf"arranged ing af rslack 4or surrenderfin' theotherwise meut cable. .One er more 'Supplemental' leere 1 1 arci-formed in the' in ainlendless cable .Ak at .desreble l t0 run en extensin' 'eentrel Ceble ,AtherefroIn, and this extension c agbl'e VA 'mer be 'She'rter; relatively"leesand@1- elierem either pef-meneetly or leteehelelrtofa fixed or movable part at some dista-nt,

ieieit .er pleeeieeide or, outside er the/ebending'.

extending in thefform ci en endless-deep erQndL-sheves 5 s'uppOrted upon theceilj nganl-sidewells effa-l'buldng, end eehert `QsupplementallQOp 1l' is shown the riore-l groun' d at the r'left vv`i,thi1 1'whichE sheave l2 Eis suspended and from Whiche branchleeused' or the cable may be permanently lfas,- tened at Ythis `engl. Genenally ^a detachable elmecti'cn isemploye'd 't0 permit-.the branch cable Arto be detached and held, in the hand 10U fand more 'O'rjless slackgivento V the cableand a similar surrender perlllted m vthe miem ,l iioor ofthe buildingjinto a' basement orf store vi o o1rn,.tlie,second extension Azbeing stretched Y2o i V.short usible'Aca'ble-ABV `extends to .and con- YhorizontallyY beneath the floor; and vthence :around a series ofvr sheaves v17 circuitously between storage shelvesor racks 18. `The end of thesecond cable A2. is detachably secured to ahook 19 upon a stationary part Y of the rack,and thefre-alarmsignal and i j operativeness of the main cable A and the kfirst branch A and second extension A2 vmay p f bejreadily tested by detaching cable Azirom i 'Y f .Thegendless main cable l,A is shown as hook 19;.".2 1

`A`stretched on circuitous jlines lengthwise of fthe ceiling, and inf'practice,anydesiredrnumy .ber'of shortloops `11"may be provided at.l .Y 175,

intervals therein, or Wherever it may be necessary or desirable to extend a fusible branch Y.' cable A therefrom@ To exemplify., in` 1.1; sliofvv :two .additional zloops Y11,l and 11b,

respectively, Vin main cable A, loop 11?. being reeved.jaround 'a fsheave 20".fromffwhicha nectswith a pivote'dicounterweighted latch V21V Which, is usedV to hold a gravity-closing fire-door C l "open-under normal;v conditions. v i `.Loopll 1sreevedaround a'V sheave 23 from ivhich a relatively, ylong fusible Ycontrol cable V,..A.4 extends. downwardlyto a fixed sheave 24,

. sheaves into the. Work room again, and thence to a second Work bench 27 Where the terminal endiof the cable Vis hooked orfastenedto keep the 'cableftautl To denotethe adapf n tiveness Yof the invention to a variety of conditions and needs, thelbranch'cablev A4 .lastfdescribed is also shovvn in Fig. 1 as" providedwith tvvoshort loops 28and 429, respec- '.tlvely, reeved. Varound separate "sheaves or f 'Y pulleysv 30 and'l, having independentl fusiwhich controls the opening of avalvejor a v* sprinkling'devicen.' andcable A6, extendsV` into ,close proximity to the Walls of a fur-v fnace Y j Upona the outbreaklof a firel at any point or place Within tashort radius of any one of.

' the multiplicity off-lovvfusible joints or bonds 2 in'r'nain cable A or any one of its ,separate brancheslvor extensions, -A to A6, `'res`pectively,a parting of the cable sections I Will 'take placeimmediately under the strain or tension imposed upon all the'cables by Vby Weight 6, which -Weight is heavier than 'veo the otherweights used in the.. train of conk,nections at refdoor- C and'sprinkling deviceD. Asa result, a {ire-alarm signal is given by the electrical'signaling apparatus B, which in actual practice is generally lo-4 cated outside of the building, orina central vstation more or less `remoterom the building. ylhesignaling'devices'may be of anysuitable kind, either electrically or me` Vchanically operated.

In 3 I illustrate a plan of a building G, Which may be an o'iice building or a hospita1having a main corridor or hall 35, and' a series of rooms 36 upon opposite sides of this hall. VIn lacing a building of this type l.

with my invention the endless main cable A 'is stretched around sheavesvvvithin'the hall,

and an vopen-,loop 11 is formedv vvithin'the cable .opposite jea'ch room. A' branch' cableV Y A2 is then 'stretched circuitously in each room andconnected to afshe'ave 37 having Vva freerunningconnection yw'viththe loop 11 f in the hall oppositelthe corresponding room.,

When all the branchcables andv themain,

cable `are stretched` taut by Weight 6', suspended from a sheave Within a loopv in the main cable circuit, the Weight is vspaced Iap art from Y .a switch represented diagramniaticalythis may be l done either by creating afslack in lone ofthelbranch cables Vor by fusion of A Yanysingle link or bond 2 in the' main .cable A'. L

or any one Vof the branch cables A2.'-

Inr Fig. V4, Iv show two separate Jfactoryv by tsvoelectricalcontacts 38.-38 in an.,A

buildingsH and H respectively, having VV rooms therein laced with a series of fusible Cbl/S P'aSSngaround sheaves fmounted r upon the ceilimg or other'part of the buildings.' Themain controlcable Afinbuildl i ingl I-I is endless and `heldtaut by a Weight 40sus'pe'ndedffrom a short loon v41 above a set of electrical contacts`42 in an electrical signaling circuit43. A'fbran'ch cable A is' l p ,laced tothe Walls or ceiling in the adjoining =blekcontrl`cables A'and A6, respectively@Vv extending therefromtfo different points inV the furnace room.. `Cable extension Af" isl connected` to the Weighted. end of' a lever' 32v room and connected at one end to a pulley 44 which is engaged `v'vitha second short .loop 45 in main cable A. Branch cable A endless cable 47 is extended into another y "room from a short loop 48 in the taut branch cable A', a double pulley ory coupling device 49 :serving to connect. loop 48V in free-rune ning engagement with a short loop 50 in,"k Y

the endless branch cable47,' which is free to `creep around its supporting sheaves 51'When tested, but normally heldtaut by Weight 40. An endless primary cable and endless branch cables'also makel the system more'responsive. y in action, especially when the cables are'relai'" tively long and are-extended great distances from the base or place of beginning. The

lacing of other rooms in the same building or otherbuildings isiurtherexempliiied inA N 4 by additional `branch .cables `52 and i" 53V connected With short loops 54 and '55 in before described.

Sheaves 5 which support cables A and A are stat-ioned in fixed positions upon the Walls or other suitable supports Within the building, but the sheaves to lwhich the ends Vof the branch cables A are connected are supported only by the main cable and'held in position by the branch cables until fusing occurs. For example, sheaves 12, 16, 20, 23, 30 and 3l are supported by and held in free running connection with the mainV cable.

TWhat I claim, is: f K l l. A systemV of lacing Abuildings with fusible cables, comprising an endless main cable having a loop and fusible bonds therein, a branch cable having a loop and fusible bonds and connected to the loopin said main cable, an extension cable connected to the loop in said branch cable and a common tension device for all the cables.

2. A system 'of lacing buildings with I fusible cables, comprising an endless main cable having fusible parting places therein and supported to permit creeping circuitously, and branch cables having fusible part-v ing places therein and connected to sheaves reeved to and supported by said main cable.

3. A system of lacing buildings .With fusible cables, comprising an endless main cable having fusible uniting ties therein, Va

ytension device for said cable, a branch cable having a sheave reeved to and supported by said main cable, and'means adapted to detachably anchor said branchAV cable under I tension. y i

4. Ay system of lacing buildingsk `vvith Vfusible cables, comprising an endless ymain cable having fusible bonds therein, a branch` cable having fusible bonds and connected to and Vheld under tension by said main cable, meansad-aptedfto place boththe main cable and branch cable under the same tension, and meansadapted to permita temporary yield Vin said cables jointly vfor testing purposes.

5. A Ysystem of vlacing buildings With lfusible cables, comprising an endlessY cable having fusible joints and a plurality of loops therein, a tension device having a sheave reeved vto .and supported by one ofv said loops,land a branch cable havinga sheave reeved to and supported by another of said .v

loops and provided with means adapted to connect it Adetachably'to an anchorage, f

6. A fire protective system of lacing buildings with fusible cables, comprising an endy less main cable having fusible bonds at intervals; means adapted to support `said cable for endless travel; .anextension cable connected to said main cable, having fusible bonds at intervals; and meansadapted to place the main cable and extension cableunder the same tension. Y v y 7. A fire protective system, comprising a plurality of endless` cables having fusible portions at interval-s therein, each endless cable vbeing supported to permit creeping, and means adapted to maintain a uniform tension on all of said endless cables.

In testimony Where'ofl aiix my signay ture hereto.

Y FREDERICK W; PARs'oNs.

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