US843462A

US843462A - Fire-resisting shutter.

Info

Publication number: US843462A
Application number: US27976205A
Authority: US
Inventors: William Spencer Hutchinson
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-09-23
Filing date: 1905-09-23
Publication date: 1907-02-05
Anticipated expiration: 1924-02-05

Description

PATENTED FEB. 5, 1907.

. S. HUTGHINSON.

FIRE RESISTING SHUTTER.

APPLICATION FILED SEPT. 28, 1905.

2 SHEETS-SHEET 1.

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W. S. HUTGHINSON. FIRE RBSISTING SHUTTER.

APPLICATION FILED SEPT. 23, 1906.

2 sums-slum 2.

UNITED srA ras PATENT orrron.

WILLIAM SPENCER HUTOHIN SON OF BOSTON lliASSACI-IUSETTS.

FIRE-RESISTlNG SHUTTER.

To all whom it may concern.-

Be it known that 1, WILLIAM SPENCER HUTCHINSON, a citizen "of the United States, and a resident of Boston, in the county of Sufiolk and State of Massachusetts, have invented new and useful Improvements in Fire-Resisting Shutters, of which the following is a specincation.

My invention-and improvements herein described relate to the construction and operation of fire-resisting shutters, doors, and the like to be applied to the external wallopenings of buildings or the openings and partitions Within the buildings. The necessity for cheap and efficient shutters of this general character, which shall be able to resist protracted exposure to great heat, 18 reco nized b the owners and occupants of buildings and by fire-insurance underwriters, and so far as lam now informed, the best available practical device of this nature consists of the wooden door or shutter, sheathed or faced with tinned sheet-iron. Shutters of this character retain their shape and do not warp. even under the application of great heat; but their capacity to resist rotracted exposure to heat is limited. Mo ern warehouses and other large buildings situated in .crowded city districts, where they are subject to danger from Tue exposure, are now very extensively provided with fire-protective water-circulating systems both for automatic sprinklers and hose connections, and itis in cooperation with such circulating systems that my invention-achieves effective utility.

In the drawings hereto annexed, wherein a window-shutter is used as an illustrative cm bodiment of my invention and improvemer ts, Figure 1 shows such a window-shutter in elevation. Fig. 2 is a section of the shutter in Fig. 1, taken along theline 2 2. Fig. 3 is a top plan view of the said shutter. Fi n 4 is a section of the same along the line 4 4, ig. 1; and Fig. 5 is a broken elevation, on an enlarged scale, of the said shutter, showin sundry details of construction.

lhe shutter A, Fig. 1, is hinged or otherwise movably secured to the wall B of the building, so as to be capable of closin over a window or other aperture in said wal In the present instance selected for illustration the shutter is hinged at O to the wall in the usual manner. Projecting from the wall B is a water-nozzle D to direct water into the interior of the shutter when the same is Specification of Letters Patent. Application filed September 23,1905. Serial No.'279,762.

, such as a are drilled.

Patented Feb. 5,1907.

closed. This nozzle D may be connected with any suitable source of water-supply and of such opening, be -a fiat sheet, as A, Figs. 2,

3, and 4. Along the lines where the two plates A A are tangent thetwo are secured together by rivets, as at a.

The edges of the shutter are reinforced by side and bottom strips A A". At the top of the shutter which is opcnthere is secured a funnel-plate F, of sheet metal, which is preferably stamped to proper shape, so as to rivet closely against one of the sheets where-. of the body of the screen is composed. This funnel extends transversely from one side of the shutter to the other and forms a transverse receptacle or water-space in commu nication with allof the vertical Water-spaces, whereby each'vertical water-space will be filled, no matter at What point Water is in troduced at the top. The hinge-bars C are shown as bent to ht the corrugations of the sheet A. and are riveted through both sheets, as shown in Fig. 4. The corrugations of the sheet A form spaces or waterch ambers, which extend vertically from top to bottom of the shutter, and at or near the bottom of these s )accs drain-holes of small diameter,

The operation of my improved shutter is as follows: 111 case of exposure to fire the shutter isclosed and secured and water is turned on through the nozzle D, which directs the stream into the flaring mouth of the funnel-plate E. The spaces between the two sheets A A are thus quickly filled with water, the small diameter of the drain-holes a being such that the screen-s aces will'reinain full so long as the nozzle delivers water into the funnel-plate E. A very moderate circulation of water is all that is necessary to keep the shutter perfectly cool, and the escape of drainage-water fronr the holes a will still further assist in keeping cool the exterior of the wall B by running (loui over its surface. The danger of warping, Iii-h is so serious a consideration, is cm ll't'l) :iwided by the water circulation through the shutter, which is suiiicient to dissipate the fiercest heat directed against the shutter itself. So long as the stream flows from the nozzle D the shutter will remain effective, and its utility, therefore, is not limited in duration, as is the case with the sheathed wooden shutters, which have heretofore proved to be the best practical and available means of fire protection of this general character. Moreover, the shutter constructed according to my invention may be made of eXtren'Lely light sheet material and he therefore cheap to construct and easy to operate. A thickness from outside to outside of the shutter oi five-eighths of an inch will'he found amply suflicient to afford the requisite stitl'ness in all but the largest v shutters of this character.

What I claim, and desire to secure by Letters Patent is 1. A. tire-resisting shutter, containing in seaesa combination two metal sheets, whereof one is corrugated, and secured in contact with the other along tangent lines to form parallel vertical water-spaces, and a transverse water-receptacle communicating with each of the vertical spaces. M

2. A fire-resisting shutter, containing in combination two metal sheets whereof one is vertically corrugated and secured in contact with the other along tangent lines to form parallel vertical waterspaccs, and a funnel-shaped receptacle at thevtop of the shutter, extending trarsversely across the same in communication with each of the vertical spaces.

Signed by I113 at Boston, Massachusetts, this 19th day of September, 1905.

WILLIAM SPENCER HUTCHINSON. Witnesses:

OniN RoBEnTs, Josnrn T. BRENNAN.