US1187545A - Door. - Google Patents

Description

Patented June 20, 1916.

w 2 SHEETSSHEET I.

INVE/VTUR BY 7 v ATTORNEY lllfllllllflllff r4!!!VIIIIIIIIIIfill/4755f!!!IIIIfI/I/ s al/ l/ C. K. OLBERG.

DOOR.

APPLICATION FILED AUG. 19, I914. 1,187,545.

C. K. ()LBERG.

DOOR.

APPLICATION FILED AUG-19.1914.

Patented June 20, 1916.

2 SHEETS-SHEET 2.

villi/I" INVENTOR K BY &

ATTORNEY I THE COLUMBIA FLANOCRAPH 60. WASHINGTQN, D. c.

"entrain s rarns rarnnr @Fhffifi.

CHARLES K. OLBERGi, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HALE AND KILBURN COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF DELAWARE.

DOOR.

Specification of Letters Patent. P t t d Jung 2a, 191

Application filed August 19,1914. Serial No. 857,581.

To all whom it may concern:

Be it known that I, CHARLES K. OLBERG, a subject of the King of Norway, and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain ne Y and useful Improvements in Doors, of which the following is a specification.

My invention relates to improvements in doors and my object is to provide a door of fireproof character in which certain disadvantages of fireproof doors as commonly made are obviated. I

Briefly, my invention comprises a composite door having a fireproof core covered with wood on both sides. In my preferred construction, the core is formed of asbestos or other fireproof material of poor heat conductivity, which core is held between two steel. or other fireproof plates which are covered with wood, the steel plates and wood being reinforced around the edges of the door by a continuous metallic reinforcing frame. When such a door is mounted in a metallic door-casing to which it is hung by steel hinges and the lock casing is attached to the central metallic portion of the door, in the manner contemplated by me, it is obvious that a complete fire wall is thereby established past which a fire on one side of the door cannot pass or be communicated to the chamber on the other side of the door.

Fireproof doors are commonly manufac tured of hollow metal, and this construction has several features which have been found objectionable. .One of the chief of these is that the hollow metallic doors are constantly being dented, as for example, by baggage carried through such doors when installed in hotels and the like. When such doors-are dented, the finish is scarred and an 1H]UI V given to the appearance of the door which is difficult and expensive to repair. The metallic sound given out when hollow metal doors are struck is also objectionable. These defects are overcome by my construction and furthermore it should be noted that my construction makes it possible to manufacture a fireproof door inwvhicl the most elaborate design may be secured at low cost, whereas such designs, in the case of hollow metallic doors, are both difficult and expensive to manufacture.

Other objects of my invention reside in the construction of parts and combinations of structural elements as will appear more fully in the following specification.

In order that my invention may be more clearly understood, attention is hereby di-.

'rected to the accompanying drawings forming part of my invention and illustrating certain embodiments thereof.

In the drawings, Figure 1 represents a side elevation of a door made in accordance with my invention, Fig. 2 represents a vertical section on an enlarged scale, taken on line 22 of Fig. 1, Fig. 3'represents a similar section of a modified form of construction, Fig. 4 represents a similar section of adoor in which the panels are of a different construction, Fig. 5 represents an enlarged detail longitudinal section through an edge portion of the door showing the lock casing in elevation, Fig. 6 is a similar view on a section taken a little to one side of that of Fig. 5, Figs. 7 and 8 are respectively vertical and horizontal sections taken on the lines '77 and 88 of Fig. 6, and Fig. 9 is a partial detail sectional view showing the mounting of one of the hinges for the door.

leferring to the drawings, the door 1 may be formed with a core 2 of asbestos or other fireproof material of poor heat conductivity, held between parallel fireproof plates, pref erably steel, 3 and 4. In the form of my invention illustrated in Fig. 2, the steel plates 3 and I are reinforced by a continuous frame 5 formed of a steel T section eX- tending all the way around the door, the central web of the T member being inserted between the steel plates and the flanges of the T section providinga metallic edge for the door at the top, bottom'and sides. Wood is secured upon both sides of the fireproof core to form a complete door, the preferable construction comprising inner layers of wood 6 and 7 and outer layers 8 and 9, on the two sides of the door. The inner wooden memtion 5 provide a, metallic face for the full.

width of the edge of the door on all four sides thereof, the ends of the flanges of the T section preferably being tapered as shown in Fig. 2. The door is preferably mounted in a steel jamb 10 of a metallic door casing to which the door may be secured by means spects advantageous is illustrated 111 F1g.

of steel hinges, which are attached to the T frame. 5. The lock of the door shown'in Figs. 5 to S has a face-plate attached to the T frame 5, the casing for the lock being inclosed in a metallic box-like construction,

, which I may term a patch pocket,attached to the st'eel plates 3 and 4, preferably by welding. lVith such a construction, it is obvious that a complete fire Wall is provided and while a fire on'on'e side of the closed doormi ht slowly partly consume the wood .Fig. 1.

covering on that side of the door, it could not pass the central core of the door, and the passage of flame and in a large measure the passage of smoke through the narrow space between the metallic edge member 5 of the door and the metallic jamb 10 would be prevented.

Referring to Figs. 5 to 8, the lock is preferably mounted in the following manner. The edge member 5 and plates 3 and 41 are cut away as illustrated at a point adjacent one edge of the door midway between the two panels in the construction illustrated in The edge member 5 here illustrated is of the, T shape shown in Fig. 2. A reinforcing member 23 is made in one piece of a T cross-section, the same as member 5, and is bent to rectangular shape, the web 2 1 of this member being cut out at each corner to simplify the bending. thesame width as the base portion of the T frame 5 are welded to therear side of the base portion of T frame 5. The web portion 5 of T frame 5 is cut back somewhat farther. than the flanges of the same, as shown in Fig. 5, and bars 25' are positioned in the openings. thus made and extend inwardly beyond the points at which the flanges of member 5 were cut away as shown. The web portions 24 of member 23 are, welded to the adjacent edges of webs 5 .ofmember 5, the web and flanges of member 23 alsobeing welded to'bars 25. The face i plate 26 ofthe lock isscrewed, as shown at 27, to bars 25, th lock casing 28 being carried by face plate 26. A pair of metal plates 29, 29,; are bent around'member 23 Flat bars 25, 25 of forced at each hinge cut-out by a flat bar 30 of the same width as the bottom flange member 5. Bar 30 is preferably electrically welded to member 5 at each end of the cutout, the w'ebportion 5 of member 5 being cut back to accommodate member 30. The

I hinge leaf 31 is attached to bar 30 by screws 32 as shown. 7

A construction which I deem 111 some reconstituting plates secured to the outer sur- 7 faces of plates 3v and 4 adjacent all four edges of the door. At the edges of plates ,3 and e, member5 is bent at right angles to form flanges 13 and 1-1 and is bent again to form a bottom flange. 15 parallel to flanges 13 and 14, 'flange15 constituting the edge surface of the door. This construction has the advantage that the asbestos or other fireproof core of the door inclosed within plates 3' and 41 may be carried all the way to flanges 15 on all the edges of the door, the asbestos being a very poor con-' ductor of heat and because'of this constructiondecreasing the possibility of fire on one side of the door being communicated to the other. The inner wooden'members 6 and 7 in this construction are secured to the outer surfaces of plates 3 and 4, and outer members 8 and 9 secured to the outer surfaces of members 6 and 7, as in the form already described, and a surface of veneer .16 may be secured upon the outer surfaces of wooden . members 8 and 9, the veneer surfaces at their edges coveringthe bent ends of the flanges of member 5', the veneer similarly, in the construction of Fig. 2, if used, covering the ends of the flanges of member 5.

The advantage of forming the wooden Coverings of the door in inner and outer layers 6, 7 and 8, 9, is that theouter layers .8 and 9 with the veneer 16 first glued thereto may be mitered and cut to size before being finally glued onto theinner layersfi and 7. This construction eliminates the difh-,

culty experienced in making perfect mitered or butt joints in the thin layer of veneer when the latteris not first attached to a heavier member, and the difliculty of veneering the piecesafter being all assembled.

In this construction the moldings 19 and 20 are shown as separate members which are glued onto the inner and outer wood layers as shown. I

It should be understood that, while I consider the above described construction of wooden coverings as preferable, my invention is not limited thereto, it being possible, of course, to secure the outer coverings 8 and 9 directly to the plates 3 and 4, the moldings l9 and 20 being either integral with members 8 and 9 or separate pieces, and inner members 6 and 7, if used to cover the door panels, extending only a short distance beyond the panels, between members 8 and 9 and plates 3 and 4, respectively.

In Fig. 4 is shown a construction similar to that illustrated in Fig. 2, differing only in that the panels of the doors are not provided with any wooden covering, the metallic plates 3 and 4 constituting the surfaces of the panels, and inner wooden members 6 and 7 terminating, preferably in a bevel, within moldings 19 and 20. As is obvious my invention may also be carried into effect in a form of door in which no panels are provided.

As stated in the preferred form of my invention, the fireproof core of the door consists of asbestos interposed betw en steel or other fireproof plates 3 and 4-, my invention, however, not being limited strictly to this construction but embodying broadly adoor or other panel having a fireproof core of any suitable nature with wooden surfaces secured thereon. In my preferred construction, the asbestos board is interposed between steel or other fireproof plates 3 and i, steel spuds 17 being interposed between plates 3 and4 and welded to the same to hold the plates and the interposed asbestos in place and to insure proper alinement of the plates. In the construction shown in Fig. 2, plates 3 and l are preferably welded to the web of member 5. The wooden members 6 and 7 may be secured to plates 3 and -t in any suitable manner. Preferably they are secured thereto by means of metallic spuds, such as 18, extending through the wooden members and welded at their inner ends to the respective metallic plates. Or, bolts may be used, as shown at 21 in Fig. 3, extending through wooden members 6 and 7 and through the plates and asbestos of the.

core. The outer ends of the metallic spuds or bolts may be provided with enlarged heads, and if the bolts are used, nuts 22 may be prO- vided, the ends of which spud or bolt heads, and nuts, if used, lie flush with, or below, the outer surface of the wooden members 6 and 7 secured thereby, the ends of the spuds or bolts being covered by the outer layers 8 and 9. The method of securing wooden coverings 6 and 7 to the plates-3 and 4-, if metallic plates are used, by the spuds weldment in welding. It is to be understood that while the method of securing the wooden coverings described forms a convenient means of attaching the same, my invention is not limited to the use of such devices.

Having now described my invention, what I claim as new therein and desire to secure by Letters Patent is as follows 1. In a door, the combination of a core, plates of fireproof material on both sides of said core, secured together through said core, wooden stiles and cross rails secured to said plates, and a reinforcing member of fireproof material extending along all the edges of the door having an inwardly extending portion, secured to the edges of both said plates, and having a marginal portion providing fireproof edge surfaces around said door, substantially as set forth.

2. In a door, the combination of a pair of fireproof plates secured together in parallel relation, fire-resisting, non-heat conducting material between said plates, throughout substantially the height and breadth of the door, wooden coverings secured to said plates, and a. fireproof reinforcing member having flanges secured to the outer sides of an edge of said plates, and a flange at right angles to said flanges, constituting an edge surface for said door, substantially as set forth.

3. In a door, the combination of a pair of metal plates secured together in parallel relation, fire-resisting non-heat-conducting material between said plates, throughout substantially the dimensions of the door, wooden coverings secured to the outer sides of said plates, a metallic edge member extending around the door, having a flange constituting the edge surface thereof, and having a portion at right angles to said flange, and concealed means for securing said plates together in spaced relation and holding the interposed material in place, said plates and said right angular portion of said edgemember being secured together, substantially as set forth.

l. In a door, the combination of a pair of metal plates secured together in parallel relation, fire-resisting, non-heat-conducting material between said plates, throughout substantially the dimensions of the door, wooden coverings secured to the outer sides of said plates, a metallic edge member ex tending around the door, having a flange constituting the edge surface thereof, and having a. portion at right angles to said flange, metal hinges securedto said edge member and a lock casing secured to a metallic element of the door, substantially as set forth.

' together, fire-resisting material of poor heat .conductivlty between said plates, ooden coverings secured to the outer sides of said plates, a metallic edge member extendmg around the door, constituting the edge surface thereof, and secured to one of said plates, and Wooden stile and cross rail mem bers, secured tosaid ooden coverings, and extending OVGI'SiLld. edge member, substantially as set forth.

This specification signed and witnessec' this 15th day of August, 1914.

CHARLES K. OLBERG.

VVitnessesi D. J. OCONNOR, Jr., TM. J. EARNSHAW.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatenta.

. Washington, 13.0."

Images