US143157A - Improvement in fire-proof shutters - Google Patents

Description

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' Fire-Prfoof Shutters. No, 143,157, Patented September23,'l873.

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, Fire-Prnof Shutters. NO. 143,157. Patented September23,1873.

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NITED STATES PATENT OFFICE;

yTEEonoEE HYATT, on NEW Yonk, N. Y.

IMPROVEMENT IN FIRE-PROOF SHUTTERS.

Specification forming part of Letters Patent No. 143,157, dated September 23, 1873; application filed September 3, 1873.

To all whom it may concern:

Beit known that I, THEononE HYATT, of New York city, in the county of New York and in the State of New York, have invented certain new and useful Improvements in Fire- Proof Shutters; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing making a part of this specification, in Which- Y Figure l is a perspective view of a windowopening provided with my improved shutters. Fig. 2 is a horizontal section of a shutter protected upon its outer side with non-conductin g material, and Fig. 3 is a like view of a shutter having both of its sides protected.

Letters of like name and kind refer to like parts in each of the gures.

As ordinarily constructed, metal shutters, when exposed to the action of heat, are warped and their form so changed as to render them useless for the prevention of injury to the interior` of a building during a fire. Many attempts have been made to protect the `metal from such injurious action by the apter that shall be capable of withstanding successfully the action of fire is the design of my invention, which consists in a metal shutter having one or both of its sides covered with sheets or boards of asbestus combined with earthy material, or its equivalent, in the manner and for the purpose substantially as is hereinafter speciiied.

In the annexed drawings, A represents a shutter constructed of or from two sheets of metal, B and G, the inner of which sheets, C,

is preferably corrugated, so as to increase the rigidity of said shutter. Upon the outer side of the plate B is placed a sheet or board, D, composed of asbestus combined with earthy matter, or its equivalent, which board is secured in place by means of bolts or rivets d, that pass horizontally through" the same and through the metal portions of the shutter at suitable points around its edge, and, if desired, within its central portion.

rlhe hinges E may be secured upon the outer side of the shutter, as seen in Fig. l; or, if desired, they may be attached to or upon its inner face, so as to be removed from the action of re.

The heat-resisting qualities of the asbestus ooverin g effectually protects it from injury or chan ge by the action of fire, while its low heattransmitting power renders impossible the inward passage of a suflicient quantity of heat to warp or injure the metal portion of the shutter.

In case the shutter is used for inclosin g an opening in a partition-wall, or if it is desired to protect adjoining buildings from a possible re Within the building having the shutters, the inner sides of the latter may be covered with asbestus board, as seen in Fig. 8.

Any desired finish may be given to the exterior of the shutter by painting, lacquering, marbleizing, or in any ordinary manner covering the same.

The shutter thus described possesses the advantage of absolute safety from injury by external heat, is a perfect protection to the buildj ing from the same, and can possess all the burglar-resisting qualities required, without Witnesses:

E. P. STARR, WILLIAM AGKEEMAN.

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