US2614295A - Reinforced door of wood and/or insulation material - Google Patents

Description

Oct. 21, 1952 J. B. EEN 2,614,295

REINFORCED DOOR OF WOOD AND/OR INSULATION MATERIAL Original Filed Oct. 25, 1940 3 Sheets-Sheet 2 I TJEM, A T115; E1 *IEEEJEM iam-Ll 435.1111

. ,VENT JOHANNES BRYNJULWZEN O aYC AT TDRNEY J. B. EEN

Oct. 21, 1952 REINFORCED DOOR OF WOOD AND/OR INSULATION MATERIAL 3 Sheets-Sheet 3 Original Filed Oct. 23, 1940 5* HHHHHM.

INVENTOR JOHANNES BRYNJULVSEN EEN ATTORNEY av of 5 hwy I a K a E s a m I M, M 3. x E I: T l x v a m :1? a 914 Q a a 9 T. m /n o. [o

{.31 d d c Patented Oct. 21, 1952 1" iaiinL (c1. 26%;)

'i 't a amend-s1 nov l dee sp t e, e nsir tion' of the reinforcing bars, etc., which are deare shown by way of non liini m 1;. e n ei a in 2 190 aged to the invention, on a sm a li soaie; witn b 'ok en' lines sl iowing an arrangement of the reinforcing'bars'inthdooL i 46h 'fgedjragmentary section e d e i iihefldbon Figiir 5 is a View similar to Figure 2, showing insulating plates arranged between the reinforcing bars and between the door panels.

ufe 6 is a iew. similar toi Figurefi, but showing a fireproof plate or body of. fireproof: ingirnaterialnl'aoed between the insulating plates, an'dsh'owingametal edging for the door. Figure ,7 shows a door according te the in vention with fireproof ins ilatingplates at the innrsides'pf the panels and/sheet, iron o1; ii on' netting positioned hetw'een the panels and the insulating plates, andwith an edgi ng oi vine t al, in which a wedge shaped shank equipped seal for gas -tight}closing of the door is zarrmged Figure 8, shows a modified fastening of the e g ng, inco'rpo'i ating a seal, having a shank with, parallel sides, 1

, Figures 9 andQa sh Wside or plan and edge views respectively ofone of the reinforcing baits. (Figures lOand 10a show side and Gross seetion'ai views of a dual reinforcing bar v 1 1 I Figuresll'l and lid show similar views of another form of du'al'reinfo'rcine bar. L; Figurelzis .a frontviw of a' hinge for doors hav1ng,e,dgmg rmew1. Y 4

Figure 313 Show horizontal orosssjeo'tioli taken thronghthehinge er a door with edging crime al withoiitaseai. L 1 a 14 is YieWsirniIant Fig'nre 13 but i e i m i q ihafiea g Pl, .n e gea 9 ihedQQ in metal" edging. showing the arrange nent oi' thhing'. leaf bkehindth edging, divided pop: tio'n's oi ,the' hinge leaf being shown in dotted esh jnd I i' i L 6' sh ws fastening n o he ng which is] secured tothe reinforcing bat" which liesne esttothe'edging v y: Figure 16a is" a side or edge elevation of Fig"- ur' 16. i

:The panels I and 2 of veneer, or, other snitb a eri A i iml i j y, fir ly C n t -.1? eaeh' her and spaced, ,at, a rsui tabi distang'e r m ea h; e h r PY e 'se q nt m na hers i 11' p -PWMQE are. formed w hie h' h aie' mbeddedin the panels Land}. y dih he rei p ar s,.dete

mined by the stiffness of, reinforcement and i and with thQ.,I eSS.ary -n 1mbei' of. reinforcing bars 3 including one positioned along 5i na n io ill hpa els l, and 2, and the th ckne Q v her ars isWQetere the inner edge of the door rail which covers the panel edges and enters the space between the panels. This rail is provided to hold the edges of the panels firmly and it is formed with ribs 5 on each side, which are pressed into corresponding grooves in the edges of the panels. In Figure 2 is also indicated how the rail 55 may be connected to the panels by means of small reinforcing bars 3a, which have teeth at their side edges, and at one end to be anchored in the rail 5.

In the embodiment shown in Figure 3, the panels I and 2 are too thin to afford the necessary anchoring for the teeth on the reinforcing bars since these must not project outside the panels. Therefore, ribs 7 are provided on the inner sides of the panels and are secured thereto with glue or by some other suitable means, the ribs being of wood or other suitable material for anchoring the teeth 4 on the reinforcing bars 3.

In the arrangement shown in Figure 5, insulation plates 8, providing insulation against heat, cold, and sound, are arranged against the inner sides of the panels between the reinforcing bars. These plates are put in place before the rails 5 and edgings are placed on the door, and a plate 9 of corrugated board or the like is placed between the insulating plates 8 to hold them pr ssed against the inner surfaces of the panels I and 2.

In the form shown in Figure 6, there is placed between the insulating plates 8 an additional fireproof plate or body Ha of fireproof material, so that the panels will be fireproof insulatedfrom each other. In this figure is shown an edging or rail covering l I of metal, whose sides are bent at right angles and cover the edges of the panels I and and have edges 12 bent at right angles, which are pressed into grooves formed in the outer sides of the panels I and 2, whereby the edging or rail covering is fastened to the edge of the door without the use of screws or other special fastening means.

In the form shown in Figure 7, fireproof insulating plates l3 are positioned against the inner sides of the panels I and 2, between which plates I3 is arranged an intermediate layer of corrugatedboard or the like. To hold the insulating plates IS in position, even if one of the panels should be destroyed by fire, there are arranged hooks or lateral projections 14 (see Figures 5 and 9) on the reinforcing bars, or instead a thin iron plate l5 may be positioned between the panels and the insulating plates. This iron plate 15 is selected thin enough so that the teeth of the reinforcing barscan be pressed through the plate [5 and into the material of the panels. Instead of an iron plate, fine meshed netting [8 may be interposed between the panels and the insulating plates.

The metal edging or rail covering 27 is formed with an enlarged reentrant groove I3 at one corner, wherein is arranged a tightening seal I9 of rubber or other elastic material. This tightening seal I9 is formed with a tubular part [9a and integral therewith is a flange portion [9b which is thinnest next to the tubular part and thickest at its other end, whereby it is snugly anchored between the converging walls of the groove. For sealing purposes, the rubber seal is so formed that a sealing part 2! lies against the edges of the groove [8. The groove [8 and the flange portion [91) may also be formed with parallel sides, as indicated in Figure 8, and in that case both parts are formed with grooves running longitudinally thereof or with other roughening to hold the flange portion of the seal in the groove.

The sealing part 19a of the seal is tubular and in accordance with the invention so arranged that when the door is closed, it engages first one side thereof against the door jamb 22 and is thereby bent over into engagement with the door post 23, so that there then exist two sealing surfaces arranged at with respect to each other, with an air channel 24 in the corner between the door jamb 22 and the door post 23. When the pres sure against the door jamb ceases or is relieved, the pressure against the door post is also relieved or ceases, and the door is free to be opened and reclosed.

The simple reinforcing bar 3, shown in Figure 9, is stamped out of sheet material and formed with spearpoint-shaped teeth 4, whose strength is increased by bending them at an angle. Reinforcing bars for doorsiwith fireproof insulating plates may be formed with the hooks or lateral projections [4, consisting of separate teeth stamped out of the bar material and bent at a right angle to the plane of the bar. These hook-like arrangements will hold the insulating plates in position, even if one of the panels should be consumed by fire. To prevent the conduction from one edge of the bar to the other of heat at ignition temperature, there are stamped out between each transverse pair of teeth a hole 25 located in the middle of the bar.

In special cases, it may be effective to use dual or compound reinforcing bars, such as shown in Figures 10, 10a, and 11, 11a, wherein are shown a dual reinforcing bar 21 composed of two bars with a U-shaped cross section with toothed edges and the backs of the bars firmly connected to each other; and a dual reinforcing bar comprising two single bars of the type shown in Figure 9, connected to each other by connectin pieces 28 with tabs 28a which are securely riveted to the bars 3.

Where door edgings of wood are used, as in Figures 2 and 5, it is important that the edgings be securely connected with the panels. For this purpose, the reinforcing bars may be formed on their ends with extra teeth 4a to be pressed into the wood of the edgings. The reinforcing bars in that case must be so arranged that the teeth 4a are exactly in position to be pressed into the edgings when these are put on the door.

Near edges of the door where normally no reinforcing bars terminate, short pieces 3a of reinforcing bars may be provided with extra teeth 4a directed toward the edgings, as in Figure 2.

The reinforcing of the door may be accomplished with whole reinforcing bars or withlonger or shorter pieces of reinforcing bar. The reinforcin bars may also be bent in any suitable geometrical form, and the construction of details may of course be varied.

In Figures 12 to 16 are shown hinges 29 for a.

door with edging of metal comprising a steel case, with the hinge leaves 30 of the hinges 29 arranged inside both the edging H or IT, as the case may be and the steel case 3|, the hinge leaves 30 having horizontal slits 32 dividing them into, for example, five parts 30a, which are inserted through slits in the outwardly bent flanges of the edges into the steel case 3 I, and fastened directly in the steel case with machine screws 33 inserted from the outside through the case and whose heads are countersunk in the case. For reception of the screws threaded holes are provided in the hinge leaves on the related side of the hinges. The hinge leaves on the door are fastened in specially devised fastening irons 34, which may be fastened to an extra reinforcing bar 35, or to the reinforcing bar 3 which runs along the door rail, arranged at a suitable distance from the door post. The hinges are then to be fastened to the iron 34, and the edging ll (Fig. 13) or I? (Fig. 14) by means of machine screws 36 inserted through this and the hinge leaf or plate 30, for whose reception threaded holes 31 are arranged in the fastening iron 34.

Advantages of slotting the hinge leaves at several places and arranging these on the edgings inside of the steel cases are that weakening of the edging and of the door post by a disproportionately long slot is avoided, which would be present with an undivided hinge leaf, and that the edging and the door post can present plane surfaces to each other.

What I claim is:

A reinforced door and hinge construction comprising a door including a pair of spaced panels, a metal reinforcing bar between and spacing said panels and recessed within the edges of said panels, a sheet metal channel-shaped cover having side and edge walls secured around the edge portions of the sides and the edge of said door, said door cover enclosing said bar with the inner surface of said cover edge wall spaced from the outer surface of said bar, the edges of said cover being inturned and embedded in said panels to seal the edge of the door, a leaf hinge having a plurality of parallel slots extending inwardly from the free edges of the door hinge to divide the leaf into a plurality of tongues, said metal cover having aligned openings in one side wall adjacent the edge wall thereof, said leaf hinge tongues being respectively inserted through said openings with the tongues sandwiched between the inner surface of said edge wall and the outer surface of said bar, and screws extending through said edge wall and said tongues and threaded into said bar.

J OHANNES BRYN J ULFSEN EEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

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