US950839A - Ventilator. - Google Patents

Description

E. DI4 CHADWIGK.

VENTILATOR. v APPLIUATION r1LBD APR.za, 1906. l

` PatentedMar. 1, 1910.

z SHEETS-SHEET 2.

To all whom it 'may concern.' I Be it known that I, EvnREi-'T D. Crum' wrox, acitizen. of the United States, resi- UivrrED sjrATEs Param OFFICE,

.EVERETT D. CHADWICK, F WINCHESTER, yTMASVSACHU'SE'JHS.

VENTILATOR.

' Application led April'ZS, 1906. Serial No. 313,126:

' dent at Winchester,` in the county Yof'Midd-lfesex and State of Massachusetts, have inlvented' certain new and useful Improve- 1 ments-in Ventilators, ofwhich the isa specification. y In many localities it is requiredby statute or munici al ordinance that everyl theater or other pi) with'a ventilator orshutterada ted to,

opened automatically or vI nanua y incase of lire, soias gto provide lan .outlet for /moke and flames and create a'draftsui' enty` to carry the saine away from thev auditorium:y It

4 is desirable that such ventilators shall be of fire-proof construction, that, they shall open outward, and that when-openttle/ shall pr() vide an unobstructed outlet ,equa in area to' at least one-tenth of the/area o'f the stage iioor,-and my invention/isl intended to pro-l vide a simple and practical ventilator which will satisfy theabove conditions vand which.

may'also be arranged lto open automatically in case of fire as well as to be manually operated fromyany one ofA a number of dider- .ent vpoints on' the 'stageorelsewhere In the accompanying.drawingaFiglu-e l isa side elevation of a closed ventilator em- .bodyn my improvementsin their preferred form i 2 is a similar view with the shutters on t e rear side of the ventilator re- -inoved and showin the roof in section; Fig.

3 is a plan view o the frame with the roof removed, showing also a portion of two shu'ttersv aton'corner of the structure. In these three figures the ventilator is represented as contracted in the direction of its length. Fig. 4 is a sectional detail view illustrating the rconnections between the shutters of my ventilator nd the releasing devices; Fig. 5

is a detail view on -a larger scale, showingthe base of the ventilator and the manner in which it is mounted on a roof; Fig. 6 is a sectional view illustrating a detail of roof construction. y

The frame of my ventilator is preferably made of angle iron, and consists at its top4 y of horizontal side and end angle bars 2 and 3 made in as many lengths as may be convenient and bolted together' and to upright -angle bars 4 'and 5, the bars 4 being located at the corners of the structure and the barsY` Specification of Letters Patent.

following ace of public assemblage haw y'ing a stage shall be provided, over the sta e,

Patent-eu Mar. 1, 1910.

5 at as many other points as may be neceslsary for strength and stiffness. According .to the specific `arrangement illustrated, the end of -the horizontal bars 2' and 3 are mitered where they meet and are bolted to the inner faces of the vertical angle bars 4 and 5, as shown in Fig. 3,' so that the an 'les of the latter point outward. Near their ower ends said bars 4 and 5-are bolted to and connected by' a base board 46 extending entirely 'around the structure, to lwhich base-boardthe shutters are hinged as hereinafter described, and on the top of the framework is' su ed aflat roof which is usuallygiven as ight pitch suticient to shed water easily, the'u right bars being proportioned to ac comp ish this result. The roof and the baseboard are preferably made of standard fire l vproof shutter construction, that is to sayof wood .or planking completely covered and inclosed by sheets of tm with interlocked.- edges and preferably the roof is made in a suitable ,number of sections 7 which are Arabbeted as at 8,A Fig. 2, thev overlapping Aedge of each section beingbolted to an angle iron cross brace 9, as shown.

A, The space between 'the base board and the roof, around the periphery of the structure,

provides the ',outlet lor Ventilating l'iassages.

and is proportioned to have -the required area accordlng to the area of the stage over which the ventllator 1s vto be used, and

for closing these pass-ages, each shutterbeing hinged at its lower edge to the upper ed e ofzthe ba-scboard 6 and having such hewht that when closed it will just pass in ,under the projecting edge of the roof and abut `aoiainstA the framing. edges of adjacent shutters at each corner of the structure are preferably beveled, 'as shown at 1l in Figf, so thatwhen the shutters are closed these edges fit together over the vertical, angle iron bar 4 atthel corre` Asponding corner. At other "points theedjacent vertical edgesof the shutters' are arranged to come over the flat outer faces of a pair of thefintermediate uprights 5. In either case the entrance of rain is effectively revented, since any rain which is driven between the adjacentedges of the shutterswill be intercepted "by the corresponding uprights and will run down the saine and out over thebase board. To the same end the upper edge of the base' board is a v suitable number of shutters l0 are provided Y The meeting thence outward under the shutter.

preferably `rabbeted on its outer side, as shown in 12, Fig. 5, the lowe'ends of the shutters being set into this rabbet, so that any Water which runs downthe inner face of a shutter will flow into the rabbetAand further precaution against the `entrance of rain under the overhanging edge of the roof,

especially on the highest side'of the latter, I prefer to face the under edge ofthe roof all the way around with a strip of wood 13 having a clap outermost.

board, and having its thicker 'edge This stripforms a part of the roof and is covered by the. tin when the roofv` is made, thus giving theunder side ofthe latter enough of a pitch outward at its yedges to' prevent Awater from running inward along the same, -V

The parts above described are detachably bolted-together, by preference, and 'hence lthey may be constructed in sections andso transported to the place of assemblage, where they can be setup without ditliculty. In setting up the structure, after acsuitable opening has been made in the roof avledge l14, Fig. 5, is built up around' this opening to such a'height as to present a horizontal base for the ventilator', and the latterv is then mounted'upon this base with the lower ends of the uprights f1 and 5 projectingdown- Ward inside of the base and with 'the base' board resting u onI it, whereupon said uprights are holte to the base and thelatter is connected to the roof by a flashing or any otherI suitable water-'tight connection. The meetin edges of the roof' sections 7, are

, prcfera ly made weather proof by covering .them with a strip of tin 15, Fig. 2, which is n soldered thereto.

It will-be seen that when the structure` vabove described is set up, each shutter will be capable of opening outward independently of any of the others'byturning on the' hinges at its-lower edge, and-,for cbn' trolling the opening of these shutter-s andv closing the same as desired I provide each shutter with a -rope ljsecured'theretn near' its upper` edge and passed over a pulleyfa't tached to. the under side of the roof, said rope being led thence to any convenient lpoint where it may be 'detachabl secured. In practice, I prefer to secure eac of these ropes to a release box 18 sogconstructed that said rope may either be manually attached to 'or detached therefrom, or electrically released from one or more distant points. rn`

electric circuit running from the release box 18 is shown in Figi, whiclrcircuit includes a. battery 19 and one lor more push buttons or manual switches 20, and it will be understood that all the release boxes mav be ineluded in the same circuitfso that the shut- ,ters may all be released simultaneously. y A

release box suitable for this purpose lsdea wedge-shape in cross section, like,

scribed and claimed vin my' applicatioirfor a patent tiled on the 8th day of October, 1906, ferial No. 337,902 and is not specifically described herein, as the particular construe` tion of such device is not material to the present invention. f,

ing of each shutter when released, I prefer vto employthe mechanism illustrated in lFig. 2,-'in which 21 represents'an elbow lever pivoted at its angle to the inner yface of oneo to the roofof the structure.- v The other arm of, Said lever carries a weight l24, and the parts .are ,so` roport-ioned that when the shutter is; close the roller 22 is at the upper of Vthe lever is in horizontal losition or otherwise locate'dto cause the ro er to press against itsltrack.l Whenthe rope which controls said shutter-is released the effect of ward, owin to the fxity ofv thel track 23, and as sai shutter opens the wei htdedown todthe lower portion otits track. The `opening 'of the shutter may-be limited by any suitable means su'ch as one or more nor- .mally-slack stop ropes 25 secured at one end 22 will not run off its track."r When a shutter is closed vby pulling o y'its rope 16, its

elevatesthe weight 24 to th "tion shown inFig. 2. As im alternative means for causing" the o )ening of the shutter, a weighted arm 26, lFig. 4, may be rigidly secured to the outside of the shutter, but

cause it can be made to o 'crate more ovvertherweather, kleaving theeziterior of the ventilator free from (projecting parts when the shutters are close shutters entirely automatic incase of fire, each of the ro es 16 ma 1be provided with construction, and it will'be noted-thatsince each shutter .and its' operating parts are 1n dependent -p`f all vthe others, .so ,'far as their operation is concerned, there will be pracof the shutters in case of fire, even though interfered with. is one of thel features of mit the described' tent for Ventilating purposes, without in any lway atectin lthejothei shutters or interek fermg with t readiness 'ofl the entire `series fully'andis also rotecte from the e ectof i' tical certainty of the opening of at least oneV the operation of the parts should belin somel In order to eifectthe instantaneous open.

the shutters 10 and provided at. the free end of its uppermost arm with a roller-.22 adaptf ed to run on a fixed -vertical track23 secured end of'the trackf23andtheweighted arm the weight 24C isv to LAforce 'the shutter out-V A `9ct scends and the roller v22 simultaneous y runs `to the shutter and attheJ dther end to the roof, and should be so limite'dthat the rollerA v I prefer the construction first described,

In order to render the opening 'of the y u suitable num er of fusi le links'27 of usual construction that any desired number ofthe shutters maybe opened to any desired ex;

the opening of any shutter to a variable extent.

2. A ventilator comprising a training providing side openings, a roof covering the saine, aseries ot outWardly-opening shutters hinged at4 their edges and adapted collectively to close said openings, means for opening said shutters independently of each other, flexible connections controlling the opening ot" said shutters, and means for de tachabl y securing said connections.

3. 1n a ventilator, the combination with a 'framing of a shutter hinged thereto, leasable means tor holding said shutter against opening movement, and inea-ns for opening said shutter when released, compiising a lever having a bearing at one end on the inside of the shutter and at the other end on a tit-:ed part of the structure, and a Weight connected to said lever and arranged to be held in elevated position by the shutter when the latter isclosed. i

s. 1n a ventilator, the conibination with a framing of a shutter hinged thereto and adapted to open outward therefrom, releasable means for hdlding said shutter against opening movement, and means for opening said shutter `when released comprising an ,elbow leverpivoted at its angle to the inner tace ot the shutter, a vertical track secured to said framing, one ot the arms ot the lever being arranged to travel on said taclr as the shut-ter opens and closes, and a weight carried by the other arm of saidleverand held in elevated position by the engagement ot' saidlever and track when the shutter is closed.

5. ln a ventilator, the combination with a framing ot a shutter hinged thereto at. its lower edge and adapted to open outward therefrom, releasable iiieans for holding said shutter against opening.movement, means tor opening said shutter when released comprising an elbow lever pivoted at its angle, to the inner tace ot the shutter, vertical traclr rigidly `secured to said training, one of the arms ot the lever being` arranged to travel on said track as the shatter opens, a weight. carried by the other arm of said lever and held in elevated position by the leach resting at its loweredge npon said baseboard and hinged thereto, and means for operating said shutters.

7. A ventilator comprising a framing having upright corner posts and cross braces connecting thenpper portions thereof, a roof covering said framing, a .base board surrounding said framing near the lower ends of posts, aseries of shutters each hinged at its lower edge to said base board and adapted to swing outward from said framing, the vertical edges of adjacent shutters at the corners of the framing being beveled to meet on the outside of said corner posts When said shut-ters vare closed, means for opening said shutters, and releasable means for holding the shutters against opening movement. l

8. A ventilator comprising a framing composed of upright posts, cross'braces connecting the upper portions thereof, a root covering said framing, a base board extending around the't'ralning and connecting said posts near their lower'ends, said baseboard being rabbeted atI the outer side-of its upper edge, a seriesl of shutters each having its lower edge located in said rabbet and'hinged to the base board, said shutters being al'- ranged. to swingoutward from the framing,- and means for opening and closing 'said shutters.

9'. In a ventilator, the combination with e traming of a series of outwardly-opening shutters ca-rt'ied thereby and hinged thereto at their lovte edges, releasable means for holding said shutters against opening movement, and means for automatically opening said shutters independently of one another, when released 10. In a ventilator, the combination of a framing, a series of shutters carried thereby, means for opening said shutters independently ot each' other, means for holding said shutters against opening movement coniprising ropes secured to. the shutters lrespectively, automatic releasing devices adapted to detacliably receive. said ropes, and means for simultaneously operating said vreleasing devices from a plurality ot different points.

1L ln a ventilator, the combination ot' a framing, a series ot shutters carried therement comprising a series o {eleetrically l framing, "e shutter carried thereby,{1neans v a for opening said shutter, Ineens for holding' operated releasing devices included in a common electric circuit, w ro` e leading from each shutter to one of sai `1 veleasing-. .devices and det-echably secured. to tlie--latter,

' and means for controlling seid electric cirf cuit 'at a. plurality of different points. 12. ln a ventilator, the combination lofa' ning movesaid shutterngainst opening movement compi'sing a 10pe"`securedthereto and a releas- 15 ing device `adapted to detachably receive said rope, and a fusible link included in said Vropendl normally sustaining the tension thereon. y

' In testimony whereof, I haveA hereunto 20 subscribedmy name this twentieth dey of April, 19o6.- c Y v l`EVERETT D. CHADWICK.

Witnesses:

JOSEPH T. BRENNAN, GASPAR ROGERS.

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