US3596405A

US3596405A - Door frame especially for use in fire door assembles

Info

Publication number: US3596405A
Application number: US3380A
Authority: US
Inventors: Bo Ingulf
Original assignee: HELLBERGS INDUSTRIER AB
Current assignee: HELLBERGS INDUSTRIER AB
Priority date: 1969-01-23
Filing date: 1970-01-16
Publication date: 1971-08-03
Anticipated expiration: 1988-08-03
Also published as: NO124326B; DK146166B; SE324878B; DK146166C; FI48952C; FI48952B; DE2003009A1; GB1299204A

Abstract

The present door frame is for being mounted in an opening in a wall and includes fixing elements attachable to the walls and a frame portion adapted to fit a door or the like and connected to said fixing elements.

Description

United States Patent c/o Hellbergs lndustrier AB Box 73, 46400 Inventor Bo lnguli Mellerud, Sweden Appl. No. 3,380 Filed Jan. 16, 1970 Patented Aug. 3, 1971 Priority Jan. 23, 1969 Sweden DOOR FRAME ESPECIALLY FOR USE IN FIRE DOOR ASSEMBLES 1 Claim, 8 Drawing Figs.

US. Cl

Int. Cl

[50] Field of Search 49/504, 505; 52/213-217 Primary Examiner-Kenneth Downey Attorney-Linton & Linton ABSTRACT: The present door frame is for being mounted in an opening in a wall and includes fixing elements attachable to the walls and a frame portion adapted to fit a door or the like and connected to said fixing elements.

PATENTEU AUG 3197;

SHEET 1 [IF 3 FIG. 5

INVENTOR BO l/VGULF ATTORNEYS PATENTEUMG 31mm SHEET 2 BF 3 II I I/ 111141 INV BO lNGULF- NTOR ATTORNEYS PATENTEU ME 31971 SHEET 3 OF 3 Fl] I'lllllllllll ill .Illlllllnllll ATTORNEYS DOOR FRAME ESPECIALLY FOR USE IN FIRE DOOR ASSEMBLIES The present invention is concerned with a door frame especially to be used in fire door assemblies, and preferably to be manufactured to steel sections, which frame is designed to be placed within the opening of a wall and comprises a portion, which is provided with a stop edge, which is adapted to fit the intended shutting element, a door or the like, whereby said portion constitutes a separate arrangement. The frame furthermore comprises a number of fixing elements, which are arranged to be fixed preferably along two edges of the opening of the wall provided for the frame, and fitting into said opening, with said portion and the fixing elements being arranged to be connected with each other in such divergent positions inbetween them that said fitting to the shutting element and opening of the wall respectively is maintained after jointing the assembly.

Said door frame is especially well fitted to be used in fire door assemblies, but it can also be used for other types of door or for scuttles and windows. The frame is designed to be manufactured of steel sections.

In the construction of buildings substantially two methods are employed for the mounting of frames for doors, scuttles and windows in the walls of the building. Either a readymade frame is mounted within an opening provided in the erected wall, or the case may also be that the wall is built, preferably by concrete casting, around a frame, which is mounted beforehand in the casting mould. The first mentioned method involves the drawback that on account of difficulties to obtain a precise fit, the opening for the frame has to be constructed with considerable oversize dimension, which requires a lot of work to fit the door frame, and in the case of concrete walls for example may make additional concrete casting work necessary. When the last-mentioned method is used, as is preferably the case in cast concrete walls, whereby the frame enters into the casting mould assembly, other inconveniences present themselves, viz the frames have to be available at a very early stage of construction, the frame has to be separated from the element, which belongs to it, e.g. the door, which involves risks of mistakes and there may also arise difficulties in the fitting work and further the frame may easily be damaged, when the wall is constructed.

It is an object of the present invention to eliminate said drawbacks and provide a frame, which can be placed within the opening of a wall allowing a great permissible variation in the tolerances of the dimensions of the opening without therefore having any special fitting work in the opening itself.

Said object is obtained by designing the frame so that the fixing element is a plane perpendicular to the opening of the wall in the intended position for mounting has a cross section, which is widening, preferably stepwise, in a direction towards one of the wall sides, and that said portion of the frame designed to cooperate with the shutting element at least at its outwards-facing sides, which are designed to cooperate with the fixing elements has a corresponding stepped cross section so that when the fixing elements are mounted in the opening of the wall, said portion of the frame can be pushed to the desired mounting position relative to the fixing elements from one side the opening.

Two embodiments of the invention will now be described with reference to the accompanying drawings, in which:

FIGS. l-S illustrate an embodiment for concrete or brick walls, in which FIG. I is a horizontal cross section through the side members of the frame,

FIGS. 2 and 3 are cross-sectional views of corner coverings for the frame,

FIG. 4 is a view of a comer, and

FIG. 5 is a vertical cross section of a threshold.

FIGS. 6 to 8 illustrate a second embodiment designed preferably for steel walls and walls of plaster slabs, in which FIG. 6 is a horizontal cross section through the side member of the frame,

- upper part, and

FIG. 8 is a side elevational view of the frame.

Both the embodiments illustrated refer to door frames.

The basic idea of the invention is the portion of the frame, which is arranged to support a door panel or the like, for example, hinges to be fitted to the frame in a conventional manner and be provided .with a stop edge against said frame and be able to be locked, not being placed directly within the opening of the wall, but being fastened to a number of long fixing elements, which have been mounted in the opening of the wall before the final insertion of the first said portion of the frame. Said fixing elements, which closely follow the wall ir respective of its tolerances, can be mounted to said portion of the frame in different positions, so that thereby an adaptation can be made between the opening of the wall and said portion of the frame.

Said basic idea is clearly evident from FIG. I, in which the numeral I indicates a cast opening in. a wall. In said opening by means of steel nails 2 or similar, a fixing element 3 has been fastened. The frame portion indicated by the numeral 4 has a hinge 5 and'a stop edge 6 and is in its turn fastened to the fixing element 3 by means of rivets 7, which can be riveted from the outside of the frame. A suitable type of rivet being the socalled explosion rivet. The cavity ofthe interior of the frame is suit ably filled wit some insulating material 8, such as rock wool by way of example.

Also the details of the design are evident from FIG. 1. In a horizontal crosscut, the fixing element 3 thus presents a stepped shape with a first portion 3c extending in the direction towards the opening of the wall, and adjacent thereto a portion 4a located at a right angle to the plane of the wall, and further, a portion 3b pointing in a direction outwards and away from the wall. To the lasbmentioned portion 3b, the side 4b of the frame 4, which side also is pointing in a direction out wards and away from the wall, is fixed. Thus, one can say that he frame portion 4 with respect to its outside contour is shaped corresponding to the stepped design of the fixing element.

In FIG. 5 the threshold 9 of the frame is illustrated, which threshold is resting on the floor 13 with projections 28 and is fixed to a lower fixing element 10 by means of driving pins or self-threading screws 11 and 12. The fixing element 10 is fixed to the floor 13 by means of steel nails 14. The

frames

6 and 9, respectively, must be dimensioned according to the measurements of the door and in order to make it possible to fix said frame to the fixing elements in spite of the fact that said elements 3 and possibly also 10 may occupy different positions due to the great tolerances of the dimensions of the opening of the wall, the holes for the rivets 7 and possibly also the screws 11 and 12 are suitably bored simultaneously in the same operation. However, it is also possible to provide the fixing elements, said portion of the frame, or both with series of holes, grooves or similar, which permit displacements in between them in the mounting work.

The corners of the portion 4 of the frame and/or the fixing elements can be jointed by special cover plates and

mouldings

29 and 30 as per FIGS. 2 and 3, by means of which the corner joint is covered as seen in FIG. 4.

As is evident from FIG. 6, the frame according to the second embodiment is designed to be mounted on walls, which are built up of

slabs

31 and 32 fastened to crossbars 20. A fixing element 22 by means of rivets 21 is fastened to the crossbar 20, in this particular case a steel section, and carries the side members 23 of the frame. These members are fastened to the fixing elements 22 by means of rivets 24. Furthermore to one side of the frame a so-called shadow moulding 25 is fastened, which shall cover the junction between the slab 32 and he fixing element 22.

The connecting upper part 26, see FIG. 7, of the frame at the top is supported by the side members 23 of the frame and is not fixed to the wall by any special fixing element. Also here there is a shadow moulding 27. The

shadow mouldings

25 and 27 may be mitered and welded together.

When mounting the frame, one proceeds as follows: In the readymade opening of the wall-

fixing elements

3 and 22, respectively, are fastened on both sides in the manner mentioned by means of, for example, steel nails 2 and rivets 21, respectively. Said fixing elements are shaped to the effect that the

portion

4 and 23, 26, respectively, of the frame from one side of the opening can be pushed into contact with the fixing elements, whereafter the desired holes are drilled and the

rivets

7 and 24, respectively, are fastened, whereafter the fixing element and said portion of ,the frame are .connected together. Furthermore, for aesthetic reasons it may be required to mount a shadow moulding or similar 29,30 and 25, 27, respectively. Both embodiments substantially correspond with each other.

When mounting the

portion

4, and 23, 26, respectively, of the frame it can be ready made and include side members, connecting header at the top, bottom portion, and threshold, jointed together by means of welding to form one integral unit. However, it can also be delivered in separate parts and be joined together in connection with the placing within the opening, by way of example using corner jointing elements.

With a frame according to the invention, which thus comprises an ordinary frame as well as fixing elements belonging thereto, a mounting with a good fit can be obtained in an opening of a wall, which is already built up, without the building itself having to be affected by any complicating working operations.

The embodiments described and illustrated in the drawings can be varied as to their design and suitable use without therefore parting from the basic idea of the invention.

We claim:

I. A frame especially to be used in fire door assemblies and preferably to be manufactured of steel sections, which frame is designed to be placed within the opening of a wall and com prises a portion which is provided with a stop edge adapted to fit the intended shutting element, such as a door or the like, whereby said portion constitutes a separate arrangement, a number of fixing elements, which are arranged to be fixed along two edges of the opening of the wall provided for the frame, and fitting into said opening, said portion and said fixing elements being arranged to be connected with each other in such divergent positions in between them that said fitting to the shutting element and opening of the wall, respectively, is maintained afterjointing the assembly, said fixing elements in a plane perpendicular to the opening of the wall in the intended position for mounting has a cross section, which is widening stepwise in a direction towards one of the wall sides, and that said portion of the framedesigned to cooperate with the shutting element at least at'its outwards facing sides which are designed to cooperate with said fixing elements, has a corresponding stepped cross section, whereby when said fixing elements are mounted in the opening of the wall, said portion of the frame can be pushed to the desired mounting position relative to said fixing elements from one side of the opening, said fixing elements each in the intended mounting position having a portion positioned substantially in the opening of the wall and substantially extending perpendicular to the plane of the wall, said fixing element portion outside of the surface of the wall having a portion projecting in a direction outwards from the opening of the wall, and that at the other surface of the wall a portion of each fixing element projects in a direction inwards and towards the opening of the wall, said other portion of the frame intended to cooperate with the shutting element being arranged so that it with one of its sides in the intended mounting position is substantially perpendicular to the plane of the .wall and is arranged to be connected to the lastmentioned portion of the fixing elements extending inwardly and towards the opening of the wall, while its opposite side has a portion extending in a direction outwardly from the opening of the door, which latter portion is arranged to be connected with said portion of the fixing elements extending in a direction projecting outwardly from the opening of the wall, and means for connecting one of said frame sides to said lastmentioned portion of the fixing elements extending inwardly and towards the opening of the wall and said frame opposite side to said fixing elements portion extending in a direction projecting outwardly from the opening of the wall.

Claims

1. A frame especially to be used in fire door assemblies and preferably to be manufactured of steel sections, which frame is designed to be placed within the opening of a wall and comprises a portion which is provided with a stop edge adapted to fit the intended shutting element, such as a door or the like, whereby said portion constitutes a separate arrangement, a number of fixing elements, which are arranged to be fixed along two edges of the opening of the wall provided for the frame, and fitting into said opening, said portion and said fixing elements being arranged to be connected with each other in such divergent positions in between them that said fitting to the shutting element and opening of the wall, respectively, is maintained after jointing the assembly, said fixing elements in a plane perpendicular to the opening of the wall in the intended position for mounting has a cross section, which is widening stepwise in a direction towards one of the wall sides, and that said portion of the frame designed to cooperate with the shutting element at least at its outwards facing sides which are designed to cooperate with said fixing elements, has a corresponding stepped cross section, whereby when said fixing elements are mounted in the opening of the wall, said portion of the frame cAn be pushed to the desired mounting position relative to said fixing elements from one side of the opening, said fixing elements each in the intended mounting position having a portion positioned substantially in the opening of the wall and substantially extending perpendicular to the plane of the wall, said fixing element portion outside of the surface of the wall having a portion projecting in a direction outwards from the opening of the wall, and that at the other surface of the wall a portion of each fixing element projects in a direction inwards and towards the opening of the wall, said other portion of the frame intended to cooperate with the shutting element being arranged so that it with one of its sides in the intended mounting position is substantially perpendicular to the plane of the wall and is arranged to be connected to the last-mentioned portion of the fixing elements extending inwardly and towards the opening of the wall, while its opposite side has a portion extending in a direction outwardly from the opening of the door, which latter portion is arranged to be connected with said portion of the fixing elements extending in a direction projecting outwardly from the opening of the wall, and means for connecting one of said frame sides to said last-mentioned portion of the fixing elements extending inwardly and towards the opening of the wall and said frame opposite side to said fixing elements portion extending in a direction projecting outwardly from the opening of the wall.