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Publication numberUS877922 A
Publication typeGrant
Publication dateFeb 4, 1908
Filing dateMay 8, 1907
Priority dateMay 8, 1907
Publication numberUS 877922 A, US 877922A, US-A-877922, US877922 A, US877922A
InventorsEdwin B Gager
Original AssigneeKinnear And Gager Mfg Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Metallic covering for doors.
US 877922 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 877,922. PATENTED FEB. 4, 1908.







caste ,m'rnmc covnanre iron noons Specification of Letters Patent. Application filed May B- 1907- Serial 110. 872.670,

Patented Feb. 4, 1908.

To all whom alt-may concern:

Be it known that EDWIN RGAGER, a citizen of the United States, residing at C- lumbus, in the county of Franklin and State the seam formed in 881118 1118111161 8.8 Shown in of Ohio, has invented certain new and useful Improvements in Metallic Covering for Doors, of which the following is a specification.

My invention relates to improvements in metallic coverings for doors, and contemplates especially the a plication of a metalic sheathin prefera ly to a frame door, whereby the latter is rendered, to a great degree, proof against fire.

It further contemplates a provision for the use of nails or screws in securin ing, at its seams, to the woo en structure, whereupon the said seams are closed so that said nails or metallic binders are completely concealed by the overlapping portions where said seam is formed.

With these and other objects in view which will be more definitely hereinafter set forth, I have shown one embodiment of my invention in the drawings, in which Figure 1 is a perspective of a door having my improved metallic covering applied thereto; Fig. 2 is a section along the line BB of Fig. 1; Fig. 3 is a section along the line 'CC of Fig. 1, through the side stile; Fig. 4 is asection along the line A-A of Fi 1, through the side stile and the cross sti e.

Referring to the drawings, 1 and 2 are the side stiles of a door, 3 and 4 are the end stiles, and cross stiles are indicated at 5; the panels lie between the cross stiles and are designated as 6., It will be understood that the door as shown in elevation in Fig. 1 has the metallic covering applied thereto, but I have used the reference numerals above, not to designate the covering, but the various parts of the door indicated.

Referring to Fig. 3, 7 and 8 and 9 indicate the courses of wood forming the. side-stile 1, the metallic covering extending over the end thereof at 12, and alon thesldes thereof at 13 and 14; at the end 0%the side stiles, as indicated at 30, the metal covering the sides and the end is overlapped and united in the Fig, 4, for the joining of the metallic covering for the side stile and. the cross stile, indicated on Fig. 1 along the line AA. Therefore a description of Fig. 4 will also'show how said sheath-- the seam at '30 is formed, and consequently attention is now directed to Fig. 4.

'31 represents the wooden frame-work, and 5 and 13 represent respectively the'metallic covering for the cross stile and the side stile; the metallic covering 13 is bent at an angle inwardly and then folded as shown at 15, the cover 5 be' bent at an angle and folded in the opposite irection as shown at 16. A. clasp member 17 is provided, having the hook portions 18 and 19, the hook portions being adapted to receive the folded portions of the metallic covers 5 and 13.

When the hook and folded portions are en-,

en, somewhat as appears at24 in Fig. 3. ile they are in the open position, a nail 20 is driven through the body portion of the clasp member 17 into the wooden frame, and when this'member is thus securel positioned, a stamp or die may be applie to the coverings 5 and 13 to press the parts into a close union, whereupon the hook portions of the clasp member and the folded portions of the covering curely locked together, forming a seam which efi'ectually covers and conceals the head 21 of the nail. As stated, this form of lock seam is used at the opposite ends of the side stiles, and also at the junctions of the cross stiles and the side stiles. Theclasp member 17 is inserted between the panels on the face of the door, where the coverings for side and cross stiles are found, as well as at the other points mentioned, and its length is determined by the length of the seam to be thus formed. Another form of scam is also used in securing the metallic covering in place upon the door, which is illustrated at 27, 28 and 29, the manner of forming such seam and of positioning the nail, being shown in Fig. 3 at 24.

Referring to Fig. 3, the metallic covering gaged, they are 0 members are se-.

1'4 for the side stile is seen to be bent at a 'A die or press is then applied to the outpositioned, and I the nails are standing metallic portion 24, and said portion and the embracing portion 23 are pressed inwardly and .the latter, thereby is made to form a hook embracing the portion 5 24, thus forming a secure locking seamand also coverin and completely concealing the nail. It wi appear, therefore, that two forms of lockseams are used in securing the metallic covering upon the wooden door, one 10 uniting the panels to the stile portlons, and

pletely concealed.- The cross stile coverings 25 are then positioned and secured to the side stile coverings in the manner hereinbefore described; the panel coverings, which are each formed (integrally), and without open or exposed miters, are then positioned, the

nails driven into place, and a die or press is then applied to the seams, forcing them into locked engagement and concealing the nails. The application of the die or press to the parts to form the locked seams, may be made" to the door covering 1n sections, or it may be applied at one operation to one complete face 17 ereof, so that one application to each face and one to each end, which might take place at one operation, would effect the formation of all the locking seams necessary, with the result that the door is completely covered by a metallic sheathing, which discloses only a trace of the meeting points of the various pieces of metal.

When a door provided with my metallic covering is attacked by fire, the wood core may be charred by the intense heat, but the metallic covering, bound together by the look seams and the nails, will retain its form 59 and effectually arrest the progress of the flames. The nails therefore perform the double function of securing the metallic covering to the wood core, and when the latter has become charred, of holding -together the 5 5 sections of the metal, which might otherwise be disengaged at the seams by the heat.

I desire to call attention particularly to the manner in which the sections of the coverings are positioned; it will be noted that. 60 there are four seams disposed around the door transversely thereof, each of which will permit some expansion or contraction, where y the covering may adjust itself to the door under varied conditions. Around the door longitudinally thereof there .are disposed a' plurality-of seams uniting the sections of the metal, which will pernut expansion and contraction of the covering upwardly and downwardly of the door. his distribution 'of a plurality of seams binding the sections of the metal coverings together both transversely and longitudinally on both sides of the door provides a construction which is, to some extent, flexible, and therefore very well adapted to the various and changing conditions under which the door may be used. It will be noted further that in forming the covering I distribute the metal insuch a manner as to prevent buckling or cufpping thereof,

whereby a smooth even sur presented.

I claim:

1. A door com rising a combustible core including side sti esand panels, a metallic covering for said door com rising a covering for each side stile formed of a single strip embracing both sides thereof and the ends, and being united at its ends by means of a conace 1s always cealed lap joint, a covering for each end stileformed of a single sheet and secured at its edges to said side stile coverings by means of concealed la "joints, a covering for each side of each panei: a covering for each side of each cross stile, said end stile coverings being joined at their ends to the panel coverings on opposite sides of said door, said cross stile coverings being secured at their ends to said side stile coverings, and being secured at their sides to said panel coverings, all of said connections being made'by means of overlapping the ends of said coverings, and inserting a nail therethrough and pressing the outer portions of said overlapping portions into position to concealsaid nail.

2. A metallic covering for combustible doors comprising a covering for each side stile formed of a single sheet of metal ada ted to embrace said side stile, a covering For each end stile comprising a single sheet of metal adapted to embrace said end stile, a

.covering for each side of each cross stile and a panel covering having its edge ortions reversely curved to form overlying oops, a single loop formed on said cross stile covering adapted to embrace the lower loop formed on said panel covering, a nail driven through said cross stile and panel coverings and adapted to secure the same together and having its head positioned in 'the lower loop formed on said panel coverin the upper loop inclosin the end portion 0% the loop formed on said pressed inwardly to cover said nai head and to form a concealed joint;

3. A metallic covering for combustible doors comprising a covering'for each side stile formed of a single sheet of metal ada ted to embrace said side stile, a covering for each end stile comprising a single sheet of metal adapted to embrace said end stile, a

cross stile covering and being adapted to be formed by reversely curving the edge por stile covering, a nail adapted to be inserted through said cover ngs into said combustible core and having its head positioned in the said lower loop, the said upper loop adapted 15 to be then pressed into engagement with said nail to conceal the same, the joint thus formed being practically concealed.

In testimony whereof I affix my signature in the presence of two witnesses.


covering for each side of each cross stile, a covering for each side of each panel united at its ends to said side stile coverings and at its sides to said cross stile coverings by a joint tions of said panel covering to form two loops thereon lying one above the other, a single loop formed upon said side stile or cross stile covering and adapted to embrace the lower on said panel covering and to l00(p lie with its l VVitn esses: en in the upper loop formed on said cross GEO. W. RIGHTMIRE, A. D. BIERMAN.

Referenced by
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US5887402 *Jun 7, 1995Mar 30, 1999Masonite CorporationMethod of producing core component, and product thereof
US6622449Jan 29, 2002Sep 23, 2003Mdf, Inc.Door panel and method of forming same
US6764625Mar 6, 2002Jul 20, 2004Masonite CorporationMethod of producing core component, and product thereof
US7022414Apr 30, 2003Apr 4, 2006Jeld-Wen, Inc.That includes door skins having two adjacent half-round curvatures in the profile for aesthetic reasons; fiberboard doors and molding method
US7185468Oct 31, 2002Mar 6, 2007Jeld-Wen, Inc.Multi-layered fire door and method for making the same
US7390447May 28, 2004Jun 24, 2008Jeld-Wen, Inc.High quality door skins; mixing poplar fiber, a resin, a release agent, and at least one type of wax; pre-pressing into a loose mat; pressing while heating and pressurizing
US7399438Feb 24, 2004Jul 15, 2008Jeld-Wen, Inc.pressing mixtures of wood fibers, waxes and polyurethane binders, between dies at an elevated temperature and pressure to reduce the thickness of the mats and to allow binding of fibers, resulting in stability; waterproofing; swelling and shrinkage inhibition
US7449229Nov 1, 2002Nov 11, 2008Jeld-Wen, Inc.Comprising cellulose material such as wood chips, thermoset polymer, a petroleum distillate, a release agent, and a catalyst
US7501037Jul 1, 2004Mar 10, 2009Jeld-Wen, Inc.Methods and systems for the automated manufacture of composite doors
US7721500Jan 23, 2007May 25, 2010Jeld-Wen, Inc.Multi-layered fire door and method for making the same
US7919186May 16, 2008Apr 5, 2011Jeld-Wen, Inc.Wood-based doorskins; polyurethanes
US7943070May 5, 2004May 17, 2011Jeld-Wen, Inc.Molded thin-layer lignocellulose composites having reduced thickness and methods of making same
US8058193Dec 11, 2008Nov 15, 2011Jeld-Wen, Inc.Thin-layer lignocellulose composites and methods of making the same
US8679386Mar 15, 2011Mar 25, 2014Jeld-Wen, Inc.Thin-layer lignocellulose composites having increased resistance to moisture and methods of making the same
Cooperative ClassificationE06B5/16