USRE13405E - mccloud - Google Patents

Description

E. H. MuCLOUD. v AUTOMATIC FIRE RESISTING SHUTTER.

APPLICATION FILED 33.19, 1912. Relssued Apr. 16, 1912. 1 3,405.

2 SHEETS*SKEET 1 EIH. McOLOUD. AUTOMATIC FIRE RESISTING SHUTTER.

APPLICATION FILED FEB.19,1912. Relssued Apr. 16, 1912.

2 SHEETS-'83!!! 2.

da ra To all whom it may concern:

illustrating a respectively, illustrating a modi UNITED STATES" PATENT EDWARD n. momma, or conumaos, .onr"

auronta'rrc rmn-mssrsrrno SHUTTER.

13,405; Specification of Be itknown that I, EDWARD H. MoOLoUo, a citizen of the Uni-ted States, residing at Columbus, in the county of Franklin and State of Ohio, -have invented a certain new a'nd'u'seful Improvement'in Automatic Fire- Resisting Shutters,f6 f which the following vis a spec1fication 1 hefillle f fibjcl of the lmentlon 1s to- :1 combinyawntlf aso-called counterbalanced ffiwi'esisting rolling shutter or curtain, im-

proved means adapted to be rendered auto-- mat-ically operative in case of near-by fire, to impel the shutter or curtain to closed position.

The invention consists. in the construction and combination of parts hereinafterdescribed and claimed, the invention not bep ing confined inits practical -20 embodiment to the forms of the parts shown. In the accompanying dra\vingsFigure 1 is a vertical section on the line' ar-m, Fig. 2, showing the shutter-closing:devices; Fig. 2' is an elevation and section with arts broken out, looking toward that end 0 the shutter containing the shutter-closing devices; Fig. 3 is asection'a-l detailof the'kind shown in Fig. 1 but illustrating a'modification'; Fig. 4 1s a fragmentary elevation and section looking from the exterior of a building and shutter containin the invention; Figs. 5 and 6 are front an side views, fication of the device for releasing the spring of the curtain-closing devices. I The curtain roller 7 shown is of the now well-known counterbalancing kind, t at is to say, it contains properly secured t it a spring o'rsprings, as at 8 and 9,.that are .wound as the curtain is unrolled, so that the shutter .can'be raised or' lowered with little effortand shall remain at. the oint to which itisadjusted withoutthe aid of securing devices. Such roller has .at one end a stationshaft 10 about which the drum of the a ro ller turns) and atthe other end a rotary shaft ll secured to turn with the drum. .These shafts are supported'insuitable end with'such rollers. The'rot'ary shaft 11 ex tends somewhat beyondithe outer. .faoe' r proper of the end bracket in which it turns, and, as shown-more and 2, is furnished parti'cularlyin Figs. 1 with a-barrel 14 and a Reissu ed Letters Patent.

firtginall'o. 987,154,.dated1tarch 21,1a11,sr1a1'1vo. 407,743. Application for'reissue-illeri rebraaryll a Serial no. 678,734.

l collar 15 between which,

is secured, as seen at 14 spring 16. The spring 16 is tobe kept nornormally loose to turn within the hub 'of the by means of a dog lever 18 mally wound up. The rotarysha ft 11- is barrel, and the rim of the latter is fur-' collar 15 is held from turning.

fulcrumed at wi'thinthe arraii and 15'7-11 'vollite one end at 18*,said lever being.,held

collar-engaging 19 attached to-the other end of said ,d"

lever and releasably secured inthe channts bar'of the shutter as hereinafter described. The rotary shaft 11 has pinned to it, beyond the aforesaid barrel, a ratchet the barrel has pivoted to its the plane of the toothed rim a pawl or dog by a sprin barrel; T e pawl 21 into outer face, in of theratchet,

spring 22 tends to press-the up or putunder increasing ttnsion brackets 12 and"13,, respectively, nas.-usual teeth, but normally, or in the ordinary op eration of the is held out of the finger 21" thereon t at abutsagainst :1 lug 17" on the lever 17. The construction of the lugs 17 and 17 is such that when the lever 17 is released and dro escapes from the lug 17" before the escapes from the lug 17, so as to 11th: of the teeth engagement with the ratchet position by means 'of a wheel 20, and

21 that is normally pressed 22 also on the outer face of the.

shut-te'ig'the point of 'the pawl omit the engagement by the pressure of t e spring,

of'the point of pawl 21 with th ratchetwheel' 20 before the release of the barrel 14 from the lever 17. When,

therefore, the

lever ll is released, thesprin 16' exerts its power through the ratcheton 'therota roller, and in a direct on tocause the shut ,ter to run down and close the opening which it is installed. When the shutter" thus closed, it may be to permit the escape of ing, that the shutter be easil I provide means whereby tli the spring 16 maybe released inert and the. or murtain and the spring within the roller restored. In Figs-1 and 4 tblze consists of .the wire rod 19 1 loop 19 constituting a finger hooking extension indica-ted shaft, and -'s hi1tter persons in the build ahd sndered passes through a hole in the curtain chanbarrl, t e pawl, the

important, in order mo; raised hence e inary balance between the for said-means at to fol-ma piece, and aat 19 that 1 arm of a, horizontally-pivoted latch 19.

One arm of the latch lever 19 is accessible from the interior of the building, while the other is accessible from the exterior, said arm passing through a suitable hole in the shutter channel.

The lever-17 is normally held up in position to latch the pawl 21 and the spring barrel 14 by. means of a pendent lever 23 "hung on the inclosing hood 24, said leyer having a shoulder 23* (see Fig. 4:) on which the end of the lever 17 rests. The shoulder 23 is held in lever-supporting position by means of a wire 25 attached to the lever 23 and to the end bracket at the opposite side of the window, said wire being made up of sections united by solder, as at 25, fusible by a dangerous rise of temperature. V In Fig. 3 is illustrateda modification in which the dog lever 18 is omitted. When fthis modification is employed the inner end of the volute spring 16 isunade fast to a fixed boss 13* on the en d bracket 13, and the spring should be wound tosuch a state of tension that it will just or quite exhaust its.

power shortly before or by the time the shutter reaches its completely-closing position, so that little effort will be required to raise the shutter a foot or two to permit the escape of persons from or access of persons to the interior of the building.

For winding up or placing the volute spring 16 under proper tension, the barrel 14 can be made with a number of holes 14 into which a tool can be inserted for turning the barrel.

What I .claim and desire to secure by Letters Patent is 1. In combination with a counterbalanced shutter or curtain that is normally operative for raising and lowering. means for impelling the shutter or curtain to openmg-closing position consisting ofa spring actuated barrel witha dog thereon, means for normally retaining said dog inoperative to 1mpel the shutter or curtain to opening-closing position and means operative 1y a dangeroils. rise of temperature for automatically g releasing the dog to impel the shutter or I I curtain to opening-closing position. 2. Incombinationwith a counterbalanced shutteror curtain. that is normally operative for raisingand lowering, means in connection therewith adapted'to receive a dog or.

pawl, means for impelling the shutter or curtain to opening-closingposition consisting of a spring actuated member carrying a dog or pawl said dog or pawl adapted to engage the said means to receive such member, means operative by a dangerous rise of temperature for normally retaining said dog or pawl inoperative to impel theshutter or curtain to opening-closing position, substantially as described. I

3. In combination with a normally-operative counterbalanced shutter 'or curtain, means fordisturbing said counterbalance and impelling the shutter or curtain to closing position, means for norm; lly retaining said last-named means in inoperative condition adapted to be released for operation by a dangerous riseof temperature, and means for rendering said impelling means inert and restoring the counterbalanced condition after the shutter has reached closing position. 4;. In combination with the rotary shaft of a shutter or curtain counterbalancing spring roller, a ratchet wheel fixed on said shaft, a barrel loose with reference to said shaft, a collar in which said shaft normally turns, a spring attachedto said barrel and collar, a pawl on said barrel to engage said ratchet wheel, means to detain, said barrel from rotation, meanstodetain said pawl disengaged from said ratchetwheeL-mcans for releasing said pawl to engage the barrel and means for releasingsaidbarrel adapted to be operated by a dangerous rise of tem- .perature.

5. In combination with a rotary shaft of a shutter or curtain counterbalancing spring roller, a ratchet wheel fixed on said shaft, a barrel loose, with. reference to said shaft, a

collar. with reference to which said shaft normally turns, a spring attached to said barrel and collar, apawlon said barrel to engage said ratchetwheel, means to detain said barrel from rotation, means to detain said pawl disengaged from said ratchet wheel and means for. releasing said pawl to engage the ratchet, and means for releasing said barrel adapted to be operated-by a dan gerous rise of temperature, said releasing means adapted to. release the pawl prior to the release of the barrel.

6. In combination with-the rotary shaft of a shutter or curtain counterbalancing spring roller, a ratchet wheel fixed on said shaft, a barrel loose with reference tosaid shaft, a fixed collar with reference to which said shaft normally turns, 'a spring attached to said barrel and collar, a pawl on said barrel to engage said ratchet wheel, means to detain said barrel from rotation, means to detain said pawl disengaged from said ratchet wheel, and means for releasing said pawl to engage the-ratchet and means for releasing said barrel adaptedto be opera-ted by a dangerous rise o temperature;

of a shutter or curtain oounterbalancing spring roller,

' uleasably holding said 00 s ring roller, a ratchet wheel fixed on said shaft, a barrel loose with reference to said shaft, a movable collar with reference to which said shaft normallytiirns, means for holding-said collar from turning, a spring attached to'said barrel and collar, a pawl on said barrel to enga e said ratchet wheel, means to detain said arrel from rotation, means to detain said pawl disengaged from said ratchet wheel, and means for releasing said pawl to engage the ratchet wheel and means for releasing said barrel adapted to be operated by a dangerous rise of temperature. I i

8. In' combinationwith the rota shaft of a shutter or curtain counterba ancing sring roller, a ratchet wheel fixed on said shaft, a barrel loose with reference to said shaft, a movable collar with reference to which saidshaft normally turns, means for releasably holding said collar from turning, said means being accessible for operation at the lower portion of the openin in which the shutter-0r curtain is inst-alle a spring attached to said barrel and collar, a awl on said barrel to engage said ratchet w eel, means to detain said barrel from rotation means to detain said pawl disengaged from said ratchet-wheel, and means for releasing said pawl to engage the ratchet wheel, and means for releasing said barrel adapted to be operatkd by a dangerous riseof temperature.

a In combination with the rota shaft of I shutter or curtain counterba a ratchet wheel fixed onsaid aft, a barrekloose with reference to said shaft, a movab excollar with reference to .which said shaft normal turns, means for from turning, and accessible for operation means being from either the lnterior or exterior of the .building after the shutter or curtain .is ,clpeethand at the lower portion of the open- ,barrel adapted to be spring, a clutch-member with said roller,

anci'ng ing in which the shutter or curtain is installed, a spring attached to said barrel and collar, a pawl on said barrel to engage said ratchet wheel, means to detain said barrel from rotation, means to detain said pawl disengaged from said ratchet wheel, and means for releasing said pawl to engage the ratchet wheel and means for releasing said' operated by a danger ous rise of temperature.

10. In means of the character set forth, the combination of a roller, a shutter con nected therewith, a clutch-member connected with said. roller, a normally-tensioned spring and normally out of operative engagement with said first-named clutch-member, and restraining means for said spring equipped with a fusible member.

11. In means of the character set forth, the combination of a roller, a shutter connected therewith, a clutch member connected with said roller, a normally tensioned spring, a clutch-member connected with said spring and normally out of operative engzgement with said'first-named clutch memr, restraining means for said spring equipped'wjth a fusible member, and means for causing the en agement of said clutch members prior to t e release of the spring.

12. In means of the character set forth, the combination of a roller, a shutter connected therewith, a clutch member connected a normally. tensioned spring, a clutch member connected with said spring and normally out of operative engagement with said first-named clutch member, thermally controlled restraining means for said spring, and means for causin the engagementof said clutch members prior to the release of the spring.

EDWARD H. McOLOUD.

connected with said i

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