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Publication numberUS603442 A
Publication typeGrant
Publication dateMay 3, 1898
Filing dateJul 3, 1895
Publication numberUS 603442 A, US 603442A, US-A-603442, US603442 A, US603442A
InventorsAlphonse De Man
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fire-resisting frame and door
US 603442 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

-(No Model.) v 2 Sheets-Sheet 1.


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Patented May 3,1898.

(No Modei.) 2 Sheets- Sheet 2.

v A. DE MAN.


*N0.'60s, 44.2 Patented May 3,1898.



' s ec men-Tron, r i m ofletters ratenunoieoaaea dnmnma 3. 189a Application filed July 3, 1995.-

To a/ZZ whom it may concern:

Be it known that L ALPHONSE-DE MAN, 0

Detroit, 'Wayne county, Michigan, have invented a new and useful Improvementin Fire- Resisting Frames and Doors; and I do declare I thatthe following is a true and accurate description thereof, reference being hadto'theaccompanying drawings, and to the letters of reference marked thereon, and being a part ,of this specification.

' The drawings comprisetwo sheets. On the i first are Figures '1 -2, and;3. On the second are Figs. 4 and 5.

Fig. 1 is an elevation of'a frame trimmed and a door with horizontal panels of ordinary design,a portion in the center being left out,

1 l shown by broken lines. Fig. 2 is a vertical.

section through the door-opening, showingv the door and the positionofttheframe igrthe.

wall and its connection with extension-janibs and trim, also howthe fire+protected core, which runs all around the opening, connects:

with the. floor, the threshold lapping over the.

. joint. }Fig. 3 is a horizontal section through" the door-opening and the relative parts, as specified in Fig. 2, showing the door partly open. Fig. 4 represents-a face View of the core of the door, the door-facing being left.

go turned over in order to show the lines of frame Work and flush flooring-panels. Fig. 5 is a. i

horizontal section showing an enlarged detail of the door-frame with insulated corejand-fill-f' ing between it and the wall, the Veneer jambf combination of the-insulated .core with the wood facings and edge strip.

and its connection withthetrim,' also a por-" ti.on;of the door partly'open, illustrating the difterentfigures. 1 In the accompanying drawings, A repr1 e- Like letters designate the same parts inthe' sents the wall with the door-opening) B represents ahorizontal sectionthrough,

- the jambs of the core for the door-frame. B"-1 45 is the head, and B" is the sill. This em rgin a complete frame of common -wood,-and it:

' should fill the opening in the .wall. Thiscore is entirely wrapped around with fireproof sheathing 0, preferably gln'ed with fireproef paste, so as to eficlude the air from thelwodd.

Serial N5. 554,847. (No model.)

F is the threshold,veneered on the protected sill B G is the extension-jamb.-

H is the trim. I represents core ofthe door; 0, the fireproof sheathing.

J represents the door-facing. There are ,two of them to each complete door, applied E can be an independent strip up to dotted 011 each side of the core, the wood and design. of. facing to match the finish of the .room in which they show.

wooden-frames and doors to resist fire to such an extent that they will be able to confine a fire to the room where it originates and will K is-the. thin'strip, which is glued in th The object of my invention is to milked notpermit it to break through theopening'.

which they protect until after severalhours velop in a room.,

My. invgition consistsin introducing in'the construction .of woode'nframes anddoors a core or body entirelyinsulatedwith fireproof sheathing, rendering the same impenetrable venting-its combustion. This is obtained for the door-frame by making a commonwooden practicable. the opening in the wall A and :the door on. all" sides, including the bottom.

-of, the' jamb'B. and head B of this frame is veneeredwith afivo od jambj D to correspond with p'the floor. The sizes ofthe door and 'littleifwood' at the rabb'e't E of" the jamb be- Disthe face-1 4mb, rabbeted outw e'ry thi f the most severe fire which can possibly-dd.

frame B, the outside of which fits as near as. I

the inside of whichfits veryne'arly the size of .85 v to the'blaze and the air, consequently pre ,The surface of this frame' B, l?:l' B'. is entirely covered-with a fireproof sheix-thin'gO; making;

it asi'gair-tight as possible. [The insidefacegs witlizthe finishofthe .door, the sill B being 'weneered .With a threshold F'to correspond]- I-OO fiaineshould be. so arranged as'to leave very tween the finished size of the door an the fireproof sheathing of the frame-say' onethe building.

core I, covered on -to require very. little fourth inch. This frame when in place must be well anchored to the wall, andall holes between the outside of it and the wall must be well stopped with fireproof material N. Then the trim H can be put on up to the rabbet-strip E, and it conceals entirely the fireproof core. The thin threshold conceals the fire-protected sill. The doorhas also a wooden the two faces and all edges with fireproof sheathing, insulating it completely. On each side of this corea thin door-facing J is veneered right on the fireproof sheathing and firmly secured to the insulated core. These door-facings are a trifle larger than the core, projecting on a l edges say one-fourth inch. This projection is, however, rabbeted down flush with the fireproof sheathingup to half ofthe thickness of the two door-facings, thus leaving a groove all around the edge of-the door, and a thin strip K of the same kind of wood as the outside of the door is veneered'in this groove, concealing entirely the core at the edges of the door.

The size of thedoor is to be so regulated as fitting to go into the rabbet ofthe frame. The thin wood strip E, veneered on the core at the rabbet of the jamb, and the strip K on the edge of the core of the door will admit of a first and some subsequent fitting should it be required through the swelling 'of the parts or the settling of It will also admit the letting in of hinges and striking-plates without damaging the fireproof sheathing of the cores.

In case the door would have to stand the fire in a room after the thin facing on the door and the veneer and trim of the frame would burn off the protected cores of the door the frame would hold the fire for hours and it would take a long time for the two thin strips of protected wood in the rabbet to burn through; but if it is found necessary these one-fourth-inch strips could-be treated with some fire-protecting preparation, which would then prevent the fire from eating through this narrow space. The screw of the hinges penetrates the fire-protected core of the door and frame, so the door wouldbe held-in place as long as the cores are not destroyed.

In some special cases the fireproof sheathing can be a metallic sheet, and the appear-' ance of a panel door isobtained by planting on the metallic sheet thin stripsrepresentin g the stiles and rails of the door.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is-.-

1. A fire-resisting wooden frame or struc-' tureconsisting'of an interiorwooden prevent access of air for combustion, and a finishing-facing on the exposed portions of the insulating material.

2. The combination with a fireproof wall, having a door-opening therein, of a-wooden door-frame, formed of a'core of wood, a fireproof insulating-sheathing inclosing thecore of wood, an exterior wood finish on the core,

and a practically fireproof door within the frame, substantially and for the purpose set forth. 7

3. The combination with a fireproof wall, having a door-opening therein of a wooden door-frame, consisting of the core B, B, B, formedof wood, inolosed within a fireproof insulating-sheathin g, and the face-jambs, D E veneer ed on the core admitting, to match any kind of wood, and apractically fireproof door therein, substantially, and for the purpose set forth. a

4. In a fire-resisting door-frame composed of an insulated vwooden core, and a wooden. facing, the rabbet-strips E e veneered on a fire-protected core, admitting to let in the hardware without damaging the fireproof sheathing, also to accommodate any variation core, a" covering of fireproof material inclosing t to of the door by altering the thickness of the rabbet-strips.

5. Wooden, fire-resisting, doors, compris ing in combination an insulated core made of wood, inelosed by a fireproof insulatingsheathing ektending unbroken over the faces, and the edges to exclude air for combustion, and a wooden finishing-facing thereon.

6. In a fire-resisting door, the combination with a wooden core, an insulating-sheathing inclosing the core (to the exclusion of air for combustion) a wooden facing on the faces of the core, and the strips K, (on the edges) admitting of letting in the hinges, and tofit and refit the door without disturbing the fireproof sheathing.

7. In a fire-resisting ning all around the door, covering the edges,


door, composed of an insulated wooden core, covered with wooden facing on each'side'the wooden strip K, runj-

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2910739 *Jan 22, 1957Nov 3, 1959S O S B Skod I SFrames for fire-retarding and fire-proof doors
US3512304 *Aug 1, 1968May 19, 1970Morgan CoInsulated panel door
US5916077 *Feb 20, 1997Jun 29, 1999Chuan Mau Products, Ltd.Composite fire-proof, heat-barrier door
Cooperative ClassificationE06B2003/7046