Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1048923 A
Publication typeGrant
Publication dateDec 31, 1912
Filing dateJun 9, 1911
Priority dateJun 9, 1911
Publication numberUS 1048923 A, US 1048923A, US-A-1048923, US1048923 A, US1048923A
InventorsJames A Wheeler
Original AssigneeJames A Wheeler
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fireproof door.
US 1048923 A
Previous page
Next page
Description  (OCR text may contain errors)



APPLICATION FILED JUNE 9, 1911. pggg Patented Dec. 31, 1912.

.X Mm w @SA 6 JAMES A. WHEELER., or soi/inssnr comme,


Application filed June 9, 1911. Serial No. 632,165.

To all whom, it may concern:

Be it known that l, JAMES A.. vWi-IEELER, a citizen of the United States, and resident of the county of Somerset and .State of' New Jersey, have invented certain new and useful Improvements in lfireproolt- Doors, of which the following is a specification.

T his invention relates to lireproof doors, and it has for its object to provide a simple and improved door of this character which can be readily and inexpensively manufactured and which will possess advantages in point of durability, rigidity of structure, strength, lightness, resistance to re, ellectiveness and general etliciency. i

ln the drawings-Figure l is a face or plan view ot a portion ot' a door embodying my improvements,'part of the facing niembers being broken away to show the inn terior construction. Fig. 2 is a detail crosssection on the line of Fig. l. Fig. 3 is a detail c oss-section on the line y-g/ of Fig. l. Fig. e'- is a detail ci'osssection on theline of Fig. l, showing one of the screw sockets.

Corresponding parts in all the figures are denoted by the same reference characters.

' Referring to the drawings, l designates the main trame of the door, which consists ot' laminated alternate bars or strips of tireproot material and wood. This 'frame is preferably ot rectangular form, so that it extends entirelyr around the rectangular outline of the door the outer edge portions thereof. The lreproof bars or strips are formed of a rigid non-metallic composition undeiiormable by heat, and l prefer to use for this purpose the composition which is commercially known as alignum7 and which is constituted by a suitable iller including asbestos and combined with a tireproo't binder to produce aplastic substance which is molded into shape and compressed and dried in a rigid structure. rllhe alternate laminated arrangement. is such that the tireproof strips, shown at '2, inclose or cover the opposite surfaces of the intermediate wood bars or strips, shown at 3.- lt will be understood that, within thescope of my, invention, the construction is not restricted to the employment. of wood for the inclosed strips 3, lout that any other suitable analogous material may be used.

In thepreterred arrangement, as herein shown, the frame l embodies first an outer strip 2 ot' reproo" material, Within which Specification of 'Letters atent.

f .l A, wat;

een flac.

extends a wood bar or another strip 2 of lireproof material. being to tend against the opposite side of said 'wood strip Against said last named strip 2 of iireproof material another wood strip -v tends, and against the latter nother A 2 of ireproot material entends, so on until the desired width of the rec.angnlar and alternated strips Q and ln practice, a lamination consisting et' tour wood strips 3 and live tireproot strips Q will generally allord the desired width for the frame l, anc preferably the wood strips are of greater width than 'the lireprooi strips, it being only necessarv to interpose thin iireprooi strips betwee e wood strips to insure the ireproot protection of the latter. At all adjoining surfaces the laminated strips 2 and 3, the strips adhe sively secured in connection by glue or any other suitable adhesive material, as shown at 2i. At opposite sides ol the i frame 1 are provided plates or sheets et rireproof material, corresponding to the ireproot character of the strips 2, and likewise formed ot a rigid non-metallic composition undeormable by heat and these sheets 5 cover the entire outer laces et the main `ame l opposite sides and also preferL *i entend over the general area ci? the de- -rrose sides of the wooo strips 3 ot the laminated main frame l which are not` correre, and closed by the intervening eproet strip are thus covered and inclosed by the out lireproot sheets 5, so that the wood sti" p are entirely inclosed at all sides hy the lire proof material constituting the intl strips 2 of the main trame l and .o sheets 5 of the door structure. The sion of the side sheets 5 over the general arca. ot' the door, in spaced position b f means of the intervening laminated main trame l., provides an air space, as at G, :toi-ming air chambers within the body of the door structure in the space surrounded by the iframe l, which enhances the tireproot quality of the door, as will he readily understood.

The inner faces oft the side sheets 5 which respectively extend over the opposite sides of the laminated main trame l are adhesively secured to the latter by glue or other suitable adhesivo substaneeextending over the adjoining surfaces, as at 7, and the inner faces of the side sheets 5 pre'n'ably roughened, as at 8, to 'taci e their alf- ...cit/1 ih and 1:"13 :511;: tance mi the dem: t1 etm'e t i f n tened. e the tannin-ated 111:1111 trume t7 mefmS et screws e1;y ethe i f etenin devices. 11 the p C 1'1 Atien te? this purposeg the wee'i' 5111115 pteifirteft w f1, i1- i i iitiuble 'pointe with metat the 1111 tirety 'threw u p 111e m1111511'Y ey 01 the 111 thet t( 11" receive in tbeii; 011131 seews eiiteringf 51311311 the Sir respective opp@ 1 emes 1 ture, though 1f iesu'e septum Sockets 1111115.' of eeiiree be emp. l.

te sides et the weed pretelliby pre1 {le} wA Webs, :1t 12, ,xieh ent/1 the e (Le tores and epemte to etain 9 in position zint serein' notion. Vl

iifith c0115 :rectum te the 1 A1 Cofresponilgty e wtittted by et opposite sitiee 1 Whh eziteiti The 'im 111113' be mmm sited, 11,111?. t

1 11 the e g1g' tra Sitte sh hier being se 'taminatee with it being' tultiefsteed that 111152111' action of eX- treme heat the iuelesed woect Strips could net burn. because of the s1111011nd11g tire proet 1111tte1-111l which is rigid and non-111etaHi/i 1d 'uludet'ei'ulable bj heat 11nd :1t mest aventi eny ehm; under high tampa-mhe, :t 'et that therefore the dem structure is "iitwined mid will not breek down under tum et: heet. 5"

. eide sheets; may be suitably )aneed tmmited at theii': exteri Suituees, to my desired uish to the doer, 01 i'eueew may be n ppied to the stu-face et sind Sie 1eets as herein shown, te town the door siuftaee. The Yeneering is prefetant/f eenetituted by tif-i111 sheets of suitable mite 1111, :1e at 1G, suitably paneiet or orner 'i .111.161 idhesiveiy Secured2 as :it l?, te the outer e111 face et the {ireptee side sheets 111431' ats@ be jpevided at the Outer edge "1151111A 'laminated .ame l, :1s shown at hen the external veneer-111g is e111-- ptejfez, :19; just set. forth, the Securing Sciews l 111215 tien pass thifeugh openings, 19, in the Yeneering sheets, t0 provide :111 z1ddt @mi 111 11s 1to1 Securing the latter i11p0stien.

@te not desire t0 be understood as lmitte the detei Construction and :M:-

1, 21s it manifest that vzuutonsdn.

fwd-ifatiene theifein muy be itesm-ted t0 in y en; et .1115Y invention rte varying' iiitieis et 115e, without d'epzutingdirmn .e spirt and Scope `et my invention and i111- t theetere reserve the right variations met Ineditieatienf 1S gjm. 101.13/ within the scope et my inten-- mi the the ietewing elaine.

'fing thus described my invent-ien, t eaim and desire to secure by Lette-,ys Patent: immoved repreef door, comprising -11ve1't lt ee1'1stit11ti11g the edge p01'- {eer and eempesed of the lami- 1 fiv'nzited buns 3 et' weed o1 eemt1 the edd,- .1 t 1e dem' and being edile-f i :red together ety then- 013130151115;

Yy eide 111 a yigid homogeneous he Side plates 5 termed et t1 the e 1111pos1t1011 undetermt 1 'ee111e61 te the respective ,'(l laminated. edge fram@ )tetes extending; over the upeste 'feces of said terminated a trmnewe't over the 51001' aree be- 211161 ent irely ndosect meeeeee' i tweea bhe opposite sections of seid frame- Work respectvey at opposite sies of the door and thus bridging the spacebetween 'the opposite secens of seid edge frame- 5 Work, whereby said bers 2 of the laminated edge framework and the edge portion 01' said side plates 5 conjointly inelose and cover all the surfaces of Said combustible bars 3 and the main portn 03E said side 10 plates 5 neoses an internal air space eX- bending 'between the opposie sections O' seid aminae edge ameWo-k, substantially as'zmd fer the purpose; set forth.`

ln testimony whereofA have signed' my name in the presence of the subscribing Wit messes.

JAMES A. VHEELFR. Witness-es:



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3206805 *Mar 12, 1963Sep 21, 1965Elmwood Liquid Products IncInsulated wall structure
US4470357 *Jan 17, 1983Sep 11, 1984Caesar SanzaroLaminated panels for vault construction
US7832166Feb 21, 2007Nov 16, 2010Polymer-Wood Technologies, Inc.System, method and apparatus for producing fire rated doors
DE1110391B *Mar 1, 1957Jul 6, 1961S O S B Skod I SFeuerhemmende Tuer
U.S. Classification52/784.11, 52/784.14, 109/80
Cooperative ClassificationE06B5/16