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Publication numberUS825002 A
Publication typeGrant
Publication dateJul 3, 1906
Filing dateDec 28, 1904
Priority dateDec 28, 1904
Publication numberUS 825002 A, US 825002A, US-A-825002, US825002 A, US825002A
InventorsWilliam H Mullins, Will C Hare
Original AssigneeWilliam H Mullins, Will C Hare
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fireproof window.
US 825002 A
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Description  (OCR text may contain errors)

No. 825,002. PATENTED JULY 3, 1906.



APPLIOA'll-DN FILED 1730.28, 1904.

F!" a M 5 @JETNESSES. Q Q 6% ally employed by glaziers glass-with wooden sashes. to intense heat, as in the case of a conflagra- UNITED STATES PATENT OFFICE.


Specification of Letters Patent.

Patented July 3, 1906.

To all whmn it may concern:

- Be it known that we, VVILLIAM H. MULLINS and ILL C. HARE, residents of Salem, in the county of Columbiana and State of Ohio, have invented a new and useful Improvement in Fireproof \Vindows; and we do here by. declare the following to be a full, clear, and exact description thereof.

Our invention relates to fireproof windows for use in fireproof buildings and the like; and its object is to provide a window Construction which will efiectively withstand the heat in case of fire.

, Window-frames have heretofore been made with metallic sashes and with the glass held therein by means of the ordinary putty usufor setting the When subjected tion, the oil in the putty will burn out, and thus cause the same to disinte ate, breaking the bond or seal around the g ass, leaving it unsupported, permitting the entrance of air,

causing a collapse of the window and the entrance of flame.

The object of our invention is to provide a fireproof window which isnot subject to the above difficulties and which is able to resist the fiameand heat in case of conflagration, so

preventing serious damage liable to occur where the' window collapses and permits the entrance of the flame.

To these ends the invention consists, generally stated, in the fireproof window formed of a wrought-metal sash rolled or pressed, having a seat or recess, a wire-glass sheet within such recess, and a non-inflammable or fireproof cement setting the wire-glass sheet in the sash, so that the wire-glass sheet will be held firmly within the wrought-metal sash, and the heat in case of conflagration will act to vitrify the cement and unite it both with the sash and glass, and thereby hold the lass within the sash and enable it to resist oth heat and pressure.

In the accompanying drawings, Figure 1 is an elevation of a window constructed according to our invention; and Fig. 2 is a section, oFn an enlarged scale, taken on the line 2 2,

The sash of the window embodying our invention is formed of wrought metal, being prefera 1y formed of sections bent from sheet metal and properly secured together. As illustrated,litflcomprises 'themetallic'stiles 1, bottom rail 2, top rail 3, and, if necessary, both horizontal and vertical muntins, depending upoii the size and number of panes of glass contained therein. The rails, stiles, and muntins which are employed are provided with seats or recesses 6, which are preferably moved, as illustrated, in which the wireglass sheets are set by the cement, the grooved seats inclosing the same and giving greater support to the cement holding the glass sheet to place. The wirelassisformed of a body of glass having embe ded therein a wire mesh 8 which strengthens the glass and prevents the same from breaking or, even if itcracks, prevents the pieces from falling out, such glass being well known in the market. The glass sheet having been seated in the grooved recess of the wrought-metal sash, it is sealed therein by a suitable or non-inflammable or fireproof cement filled within the recess, preferably on both sides of the glass sheet and holding it firmly therein. For this purpose we employ a fireproof or heatresisting cement, such as asbestos cement, the principal ingredient of which is asbestos, or magnesia cement, the principal ingredient of which is magnesia, either of which cements is refractory and not affected by fire, the cements being united by suit able binders which will not burn out under intense heat. One essential characteristic of the cement is that while holding the wire-glass sheet to lace at ordinary temperatures under intense eat, as in the case of a conflagration, it will become vitrified to both the lass sheet and the body of the wroughtmeta l sash, the heat suitably uniting the glass to the sash through the cement more firmly than when subjected to ordinary temperatures and where the sheet is simply held by the ordinary binding eifect of the cement. The cement filling or sealing 13 indicated at 10.

When a window embodying the invention is in use, it can be subjected to very intense heat without injury and is also able to resist IOO lateral pressure-such, for example, as where the same to be vitrified both to the glass sheet IIO and to the wrought-metal frame, thus effectively maintaining the seal between the sash and glass even at such high heats and sustaining the glass sheet against lateral strain or pressurefor example, in the case of a heavy stream of water thrown upon itholding the edge 'of the sheet firmly within its seat even though the body of the sheet is rendered plastic under the high heat to which it is subjected, While as the edges of the Wire mesh embedded in the glass are thus held.

Within the seat the entire sheet of glass is enabled to resist lateral pressure, and if the sheet becomes cracked under the heat the Whole sheet will be held to place Within its frame. As a consequence no opening will be formed through which the flame oil heated air and gases'may pass and the Window will not collapse, and it thus provides a thorough protection from fire.

It Will of course be understood that details of construction. of the sash itself are immaterial and may be varied within the bounds above stated.

What We claim is- 1. Afire oroof' Window formed of a Wrought-- metal sash having a seat or recess for the glass, a sheet of Wire-glass seated therein, and a filling of fireproof cement seating the Wire-glass Within the recess.

2. A fireproof Window formed of a Wroughtmetal sash having a grooved seat or recess for the glass, a sheet of Wire-glass seated therein, and a filling of fireproof cement seat ing the wire-glass Within the grooved recess.

In testimony-whereof We, the said WILLIAM H. MULLINsand WILL C. HARE, have hereunto set our hands.




. ROBERT 0. Torrent.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4332111 *Mar 5, 1980Jun 1, 1982Nippon Sheet Glass Co., Ltd.Fireproof windowpane and mounting frame therefor
Cooperative ClassificationB32B27/36