AU5504600A - Door jamb and architrave assembly - Google Patents

Description

01 Sep 00 20:02 Walsh AssociatAes 61 2 47762091 p.

4 61 2 47762091 DOOR JAMB AND ARCHITRAVE ASSEMBLY

BACKGROUND

The present invention relates to assemblies enabling the fixing of doors and the like to a support structure such as a wall and more particularly, relates to a door jamb assembly comprising complementary profiled members which interengage to form a door jamb and architrave assembly.

PRIOR ART Doojambs and architraves are essential finishing structures in buildings on which doors rely for support. There are many different forms of door jambs presently used in the construction industry including those made from timber and which are profiled to suit the requirements of particular door sizes and types. Timber door jambs have been used for many years in building structures particularly in domestic dwellings. With the advent of highrise buildings and home units, a move was made to use of doorjambs manufactured from metal and built into the structural wall to which they are attached.

These metal doorjambs must be built in at the time the walls are constructed and are primarily suited for use with masonry or concrete walls and as such have ties fitted to the back of the jamb which are anchored by the wall structure. As the jambs are installed in the very early stages of construction, they are highly vulnerable to inadvertent damage during completion of the structure adding to builder's costs.

Ideally, door jambs are best installed at the tail end of construction to minimise the possibility of damage.

While the problem of vulnerability to damage during construction is to an extent avoided by use ofjambs made from materials which can be installed near the end of the construction phase such as timber, use of timber carries with it environmental problems which has lead to a trend away from this material in some countries.

Apart from the doorjambs manufactured from exotic timbers, more recently cheaper RECEIVED TIME 1. SEP. 90:44 PRINT TIME 4. S[P. 7-18 01 Sep 00 20:03 Walsh FAssociatles 61 2 477G2091 p.7 61 2 47762091 timbers have been used which are dove tailed together and painted. These are very cheap door jambsand are generally inserted when the building is nearing completion in much thesame way as higher quality timber jamnbs are.

Whilst the known timber doorjamrbs havc proven to be satisfactory is some applications in recent years, due to the trend away from the use of timber in favour of using earth materials such as steel, attention has been directed to alternative methods of installing apparatuses for use as doorjambs which do not suffer from the disadvantages of existing doorJambs and particularly those susceptible to damage during building construction. The present invention seeks to provide an alternative doorjamb assembly and method of erection thereof whereby door jambs can be installed just prior to completion of a building structure to avoid susceptibility to inadvertent damage during completion of major structural works.

In its broadest form the present invention comprises: an adjustable window or door frame and architrave assembly for attachmrent about an opening in a support structure such as a wall and whi ch when attached to said structure is capable of supporting a window or door to close said opening, wherein, the assembly includes a frame adapted to fit in and about the periphery of said window or doorway opening; wherein said frame comprises; first and second profiled members which engage each other when mounted from opposite sides of the opening; said first member being generally L shaped comprising a first abutment member forning one leg of said L shape which engages the outer surface of and at least a part of which is parallel to cladding attached to said wall and including fastening means for enabling fixing of said first member to said wall and through said cladding, said fastening means concealed from view by an outer skin of said first abutment member and a second single skin abutment member which is parallel to but spaced apart from 9.

RFCFIVFD TIMF 1. U P. 90-44 RECIVO TME 1. EP 9044PRINT TIMP 4. SEP. 7: 17 01 Sep 00 20:02 Walsh Associates 61 2 47762091 p.

61 2 47762091 a face of the wall presented within and defining the doorway opening and which engages said second profiled member; said second profiled member being generally L shaped and comprising; a first abutment member forming one leg of the L shape which engages the outer surface of and at least part of which is parallel to cladding attached to an opposite side of said wall and including fastening means concealed from view by an outer skin of said first abutment member of said second profiled member for enabling fixing of the second profiled member to said wall and through said cladding and a second abutment member parallel to but spaced apart from a face of the wall presented within the doorway opening and further second single skin abutment member of said first profiled member, said second abutment member of said first profiled member being anchored within said bifurcated portion at a predetermined distance from a mouth of the bifurcated portion by a fastener whose free end penetrates a void space formed between said face of the wall presented within the doorway opening and said second abutment member of said second profiled member, wherein said fastener effecting said anchorage of said second abutment member within said bifurcated portion is concealed from view by an outer skin formed at the end of said bifurcated portion; wherein said outer skin at the end of said bifurcated portion provides a closing abutment for a door or window; said first profiled member being adjustable relative to said second profiled member to accommodate different wall thicknesses.

Preferably, said first abutment members of said first and second profiled members are parallel to the outer surface of said wall and each terminating in the second abutment members of the first and second profiled members wherein said parallel abutment "members of each said first and second profiled members are connected to the wall and have a profiled recesswith an opening through which a fastener is placed to effect 3 RFCFIVFD TIMF 1 U P 9 n' PRINT TTMF 4 FP 7,1R 01 Sep 00 20:03 Walsh Fssociates 61 2 47762091 p.

6 61 2 47762091 fixing of said profiled members to the outer surface of the wall. According to one embodiment the fixing of the first and second profiled members is effected by means of fixing screws which attach to said wall via said profiled recesses.Preferably, the fixing screws when in situ are concealed from view by means of grommets or plugs inserted in each said outer skin of said first abutment members of said first and second profiled members and in said outer skin of said second abutment member of said second profiled member.

Preferably, a free end of the second abutment member of said second profiled member is angled away from the second abutment member of the first profiled member to facilitate ease of entry into said bifurcated portion of the second abutment member of the first profiled member wherein the second abutment member of said first profiled member is retained a predetermined distance inside said bifurcated portion by means of a fastening screw which engages a recess in said bifurcated portion.

According to a method aspect the present invention comprises: a method for fixing a door jamb and architrave assembly to a doorway opening comprising the steps of, a) taking an assembly comprising first and second profiled members hereinbefore described; b) attaching one of the profile members to an outer surface of a doorway opening via the first abutment member such that the first abutment member lies flush with the surface of the wall; c) bringing the other profiled member into engagement with the already attached profiled member such that the second abutment member of one of the profiled members engages the second abutment member of the first profiled member, 4- RECEIVED TIME 1. SEP. 20:44 PRINT TIME 4. SEP. 7:18 01 Sep 00 20:03 Ualsh L RssociatAls 61 2 47762091 p.8 61 2 47762091 d) screw fixing said other profiled member to an opposite outer surface of a wall via an opening in the first abutment member; e) inserting a fastener through the second abutment member of each said first and second profiled members to effect fixed engagement therebetween.

In another broad form the present invention comprises; an adjustable window or door frame and architrave assembly for attachment about an opening in a support structure such as a wall and which when attached to said structure is capable of supporting a window or door to close said opening, wherein, the assembly includes a frame adapted to fit in and about the periphery of said window or doorway opening; wherein said frame comprises; first and second profiled members which engage each other when mounted from opposite sides of the opening; said first member being generally L shaped comprising a first abutment member forming one leg of said L shape which engages the outer surface of and at least a part of which is parallel to cladding attached to said wall and including fastening means for enabling fixing of said first member to said wall and through said cladding, said fastening means concealed from view by an outer skin of said first abutment member and a second single skin abutment member which is parallel to but spaced apart from a face of the wall presented within and defining the doorway opening and which engages said second profiled member; said second profiled member being generally L shaped and comprising; a first abutment member forming one leg of the L shape which engages the outer surface of and at least part of which is parallel to cladding attached to an opposite side of said wall and including fastening means concealed from view by an outer skin of said first abutment member of said second profiled member for enabling fixing of the second profiled member to said wall and through said cladding and a second abutment member parallel to but spaced apart from a face 6" RFCFIVFD TIMF 1. SFP. 90:44 PRINT TiMF 4. F P 7-17 01 Sep 00 20:03 Walsh Associatts 61 2 47762091 p.

9 61 2 47762091 of the wall presented within the doorway opening and further second single skin abutment member of said first profiled member, said second abutment member of said first profiled member being anchored within said bifurcated portion at a predetermined distance from a mouth of the bifurcated portion by a fastener whose free end penetrates a void space formed between said face of the wall presented within the doorway opening and said second abutment member of said second profiled member, wherein said fastener effecting said anchorage of said second abutment member within said bifurcated portion is concealed from view by an outer skin formed at the end of said bifurcated portion; wherein said outer skin at the end of said bifurcated portion provides a closing abutment for a door or window; said first profiled member being adjustable relative to said second profiled member to accommodate different wall thicknesses.

In another broad form the present invention comprises: an adjustable window or door frame and architrave assembly for attachment to a support structure such as a wall and which when attached to said structure is capable of supporting a window or door, wherein, the assembly includes a frame adapted to fit in and about the periphery of a window or doorway opening said frame comprising; first and second profiled members which engage each other from opposite sides of the opening; said first member being generally L shaped comprising a first abutment member forming one leg of said L shape which engages the outer surface of and at least a part of which is parallel to cladding attached to said wall and including means connected thereto for enabling fixing of said first member to said wall and through said cladding and a second abutment member which is parallel to but spaced apart from a face of the RECEIVED TIME 1. SEP. 90:44 PRINT TIME 4. SEP. 7:17 01 Sep 00 20:04 Ualsh Rssociatles 61 2 47762091 p.

1 0 61 2 47762091 wall presented within the doorway opening; said second profiled member being generally L shaped and comprising; a first abutment member forming one leg of the L shape which engages the outer surface of and at least part of which is parallel to cladding attached to an opposite side of said wall and including means connected thereto for enabling fixing of the second profiled member to said wall and through said cladding and a second abutment member parallel to but spaced apart from a face of the wall presented within the doorway opening and comprising a bifurcated portion which receives said second abutment member of said first profiled member, said second abutment member of said first profiled member being anchored within said bifurcated portion at a predetermined distance from a mouth of the bifurcated portion by a fastener whose free end penetrates a void space formed between said face of the wall presented within the doorway opening and said second abutment member of said second profiled member; said first profiled member being adjustable relative to said second profiled member to accommodate different wall thicknesses.

Preferably, the first abutment member on the first profiled member comprises a first leg of said L shaped cross section, at least part of which abuts an outer face of said support structure and is fixedly attached thereto and wherein the first abutment member of the second profiled member comprises a first leg of the L shaped cross section which abuts an opposite outer face of said support structure and is fixedly attached thereto. One of the legs of the first profiled member engages a corresponding portion in the second profiled member such that the first profiled member and second profiled member interengage preferably by male female intcrfitting or otherwise by simple overlapping of abutment members. Preferably, the second profiled member engages one face of the structure to which the doorjamb is to be fitted and either 7 RECEIVED TIME I.SEP. 20:44 PRINT TIME 4. SEP. 7:17 01 Sep 00 20:04 Walsh L AssociatAs 61 2 47762091 p.

1 1 61 2 47762091 engages or overlies another face, one of which faces is the same as one of the faces which the first profiled member engages.

The first profiled member in addition to its functioning as a doorjamb forms an architrave for a door opening on one face of a supporting wall and by virtue of a return part of a doorjamb. The second profiled member is substantially the same overall size as the first profiled member and also forms an architrave on the opposite side of the wall and also forms the remaining part of the doorjamb by virtue of an abutment member.

According to another method aspect the present invention comprises; a method for fixing a doorjamb and architrave assembly to a doorway opening comprising the steps of, a) taking an assembly comprising first and second profiled members hereinbefore described; b) attaching one of the profile members to an outer surface of a doorway opening via the first abutment member such that the first abutment member lies flush with the surface of the wall; c) bringing the other profiled member into engagement with the already attached profiled member such that the second abutment member of one of the profiled members engages the second abutment member of the first profiled member; d) screw fixing said other profiled member to an opposite outer surface of a wall via an opening in the first abutment member; e) inserting a fastener through the second abutment member of each said first and second profiled members to effect fixed engagement therebetween.

The present invention will now be described in more detail according to each aspect RECEIVED TIME 1. SEP. 90:44 PRINT TIME 4. SEP. 7:17 01 Sep 00 20:04 Walsh RssociatAes 61 2 47762091 p.12 61 2 47762091 and with reference to a preferred but non limiting embodiment wherein: Figure 1: shows an exploded view of a doorjamb and architrave assembly according to a preferred embodiment of the invention; Figure 2:shows a cross sectional view of the assembly of figure 1 fitted in situ and its manner of fixation to a wall structure; Figure 3:shows an exploded cross section through one side of a doorjamb and architrave assembly according to an alternative embodiment; Figure 4: shows the arrangement of figure 3 with profiled members secured together; Figure 5: shows a cross sectional view of the arrangement of figure 4 secured to doorway opening.

Referring to figure 1 there is shown an exploded view of an assembly 1 which when assembled forms an architrave and doorjamb on both sides of a doorway opening according to a preferred embodiment of the invention. The assembly 1 comprises a first profiled member 2 which is adapted to interfit with second profiled member 3.

Each of said first and second profiled members define a generally U-shaped structure which neatly fits in a preformed door way opening 4 in a structure to which the doorjamb assembly is to be fitted.

First profiled member 2 when in situ opposes second profiled member 3 on opposite sides of a wall structure (see figure 2) at the location of doorway opening 4. Thus, profiled members 2 and 3 effectively sandwich the wall structure therebetween. Once first profiled member 2 and second profiled member 3 are engaged and affixed to the wall structure, door 5 is inserted in opening 4 and is affixed to the so formed door jamb via hinge assemblies 6 and 7.

Profiled members 2 and 3 are affixed both to each other and also to the wall structure by means of fasteners 8 and 9, respectively.

9 RECEIVED TIME 1. SEP. 20:44 PRINT TIME 4. SEP. 7:17 01 Sep 00 20:04 Walsh Associates 61 2 47762091 p.

13 61 2 47762091 Referring now to figure 2 there is shown a cross sectional profile of an assembly according to a preferred embodiment wherein first profiled member 2 and second profiled member 3 are shown in opposing relationship fitted to a doorway opening of indefinite width. First profiledmember 2 is generally L shaped in cross section and comprises first abutment member 10 and (second return abutment) member 1 1 wherein member 1 1 enters doorway opening 4 and is generally parallel to and spaced apart from a surface 12 of wall 13. Member 10 engages a surface 14 of the wall structure to which the doorjamb assembly is to be fitted. Profiled-member 2 may be manufactured from one piece of material. Alternatively, member 10 may comprise elements 10a and 10b forming an inner and outer skin whereby element 10b is welded at one end to a return on element 10a and at the other end to member 1 1. Elements 1 a and 10b form a void space 10c therebetween into which a fixing screw 8 is placed via an opening in element 10a to secure profiled member 2 to wall 13. Profiled member 3comprises first abutment member 15 and second abutment member 16.

Member 15 abuts a surface 17 of wall 13 corresponding to the surface 14 which member 1 0 of profiled member 2 abuts on the other side of the wall. In use, second profiled member 3 via second abutment member 16 engages second abutment member 111 of said first profiled member 2 via a recess 18 formed by a bifurcation of member 16 into elements 16a and 16b to effect male-female interfitting between the profiled members 2, 3. Member 16 includes two members 16a and 16b which form a void space 18 into which a fixing screw 23 is inserted. Member 1 1 is urged into recess 18 to a predetermined distance which results in the distance between members and 15 corresponding to the overall thickness of the wall 13 to which the assembly is attached.

lo RECEIVED TIME 1. SEP. 9 0: 44 PRINT TIME 4. SFP. 7:17 01 Sep 00 20:05 Walsh RssociatAes 61 2 47762091 p.

14 61 2 47762091 Figure 2 is a cross sectional view taken through part of a wall 13 to which assembly 1 is fitted. The representation shows a section through two sides of the assembly fitted to both sides of doorway opening 4. The assembly will fit together identically on both sides and on the top of the doorway. The arrangement is thus described with reference to one side only of the doorway opening. Member 1 1 penetrates into the throat of recess 18 to a distance sufficient to facilitate engagement between member 10b of profiled member 2 and wall surface 14 and surface member 15b of profiled member 3 and wall surface 17. Thus, the degree of penetration of member 1 1 is dependent upon the thickness of the wall (including the cladding) to which the assembly is attached.

Once member 1 1 has penetrated recess 18 to a sufficient degree fixing screw 8 is inserted to ensure that there is no unwanted withdrawal of member 11 from recess 18.

Outer skin 15a includes opening 20 through which a fixing tool such as a screw driver can be placed to engage fastener 9 to complete fixation of member 15 against surface 17. Likewise, member 10a includes opening 20a which receives fastener 8 and allows insertion of a fixing tool such as a screw driver for securing fastener 8 to wall 13.

Fixation screw 23 places members 1 1 and 16 in double shear connection thereby providing a secure and strong interengagement. Once fastening members 8 and 9 are fully tightened the fixing tool is withdrawn and grommets 21 (see figure 1) covers openings 20 and 20a to provide a more aesthetic and finished appearance to the skins and 15a. Grommet 22 conceals from view fixation screw 23. Member 24 provides the abutting surface 25 against which the door closes.

Figures 3 and 4 show a cross sectional profile of a doorjamb and architrave assembly according to an alternative embodiment. Figure 3 shows the profile of the assembly in an exploded configuration and figure 4 shows the profile of figure 3 in the assembled configuration wherein profiled parts 3 0 and 3 1 are mated together. According to the l\ RFCFIVF TTMF 1 FP )A-4P PR INT T TV A P 7. 17 01 Sep 00 20:05 Walsh Rssociates 61 2 47762091 61 2 47762091 embodiment shown in figure 3 the assembly comprises a first profiled member 30 and second profiled member 3 1. First profiled member comprises first and second abutment members 32 and 33 respectively such that profiled member 30 is generally L shaped. Second profiled member 31 comprises first and second abutment members 34 and 35. Abutment member 35 comprises a bifurcation formed by members and 35b which define a recess 36 which will receive member 33 when profiled members 30 and 31 interengage.

Member 35a includes surface 37 which provides an abutment surface against which a door (not shown) will close. Member 35a includes a spacing profiled part 38 which provides a recess for a fixing screw which secures member 33 to member Similarly, abutment member 32 includes a profiled part 39 which receives and conceals a fixing screw for securing the profiled part to a surface of a wall. Likewise abutment member 34 includes a profiled part 40 which receives another fixing screw for securing profiled part 31 to an opposite surface of the wall.

Figure 4 shows the assembly of figure 3 with profiled parts 30 and 31 coupled together. There it can be seen that member 33 engages recess 36 and profiled parts 39 and 40 engage cladding surfaces 42 and 43 of wall 44 (see figure The same connecting arrangements are effected along the length of the door jamb according to the size of the door opening. In normal circumstances it could be expected that there would be three sets of fixation on either side of the door providing an adequately secure door jamb.

The assembly according to the present invention is particularly useful in project homes and more particularly in those homes which are constructed from brick veneer and which have internal stud walls fabricated from either timber or metal. In the 12- RECEIVED TIME 1. SEP. 20:44 PRINT TIME 4. S FP. 7 :17 01 Sep 00 20:05 Walsh AssociatAes 61 2 47762091 p.16 61 2 47762091 normal course of events during construction of such buildings, carpenters or like tradesmen fix either the timber or steel stud frame walls leaving door way openings where required. Doorjambs which are usually made from timber are fixed either before or after affixation of wall cladding material and where timber is used as the doorjamb material as is usually the case in conventional brick veneer construction, there are considerable labour costs involved in the installation. For instance, it could take a carpenter a day to carry out the necessary work involved in fixing and setting a door and associated door jambs. This results in increased costs to the builder and consequently of the overall cost of the structure.

The present invention provides an alternative whereby the carpenter or door fitter can insert the doorjambs even after the wall cladding has been painted and other work completed as there is very little trauma to the structure in affixing the doorjamb assembly according to the present invention. The door jambs are particularly useful with walls having a normal width of 90mm but it will be appreciated that the assembly can be applied to walls of any desired width. It will also be understood that the doorjamb assembly described is not to be construed as confined to buildings but could equally be used in other applications such as in furniture construction and modular partitioning construction in both internal and external applications.

According to the method aspect each of the profile parts 2 and 3 are roll formed from a sheet of flat steel. Each of the profile members are configured according to the requirements of the particular job but it would be expected that standard sizes for each profile member can be achieved. Variations can also be made to the profiled members by for instance increasing the length of the members 10 and 32 and 15 and 34 respectively to provide a wider architrave eftect around a door opening. Also the length of members I 1 or 33 can be adjusted to accommodate 13 T IT T 7 P~rFPV~n TTMP 1 UFP PPINT TIMP A QPP 1*.17 01 Sep 00 20:05 Walsh Associates 61 2 47762091 p.

1 7 61 2 47762091 different wall thicknesses. The present invention also provides a finished architrave so that the completed door surround including jamb and architrave is effected as soon as the profile parts 2 and 3 are installed and connected together.

It will be recognised by persons skilled in the art that numerous variations and modifications can be made to the overall invention without departing from the spirit and scope of the invention as broadly described herein.

1+ RECEIVED TIME 1. SEP. 9 0 :44 PRINT TIME 4. SFP. 7:16

Claims (6)

1. 2. An assembly according to claim 1 wherein said first abutment members of said first and second profiled members are parallel to the outer surface of said wall and.each terminating in the second abutment members of the first and second profiled members.
2. 3. An assembly according to claim 2 wherein said parallel abutment members of each said first and second profiled members are connected to the wall and have a profiled recesswith an opening through which a fastener is placed to effect fixing of said profiled members to the outer surface of the wall.
3. 4. An assembly according to claim 3 wherein the fixing of the first and second profiled members is effected by means of fixing screws which attach to said wall via said profiled recesses. An assembly according to claim 4 wherein the fixing screws when in situ are concealed from view by means of grommets or plugs inserted in each said outer skin of said first abutment members of said first and second profiled members and in said outer skin of said second abutment member of said second profiled member. C, RFCFIVF) TIMF 1. FP. 90144 PRINT TIMF 4. SFP. 7: 1f 01 Sep 00 20:06 Walsh AssociatAs 61 2 47762091 p. 2 0 61 2 47762091
4. 6. An assembly according to claim 5 wherein a free end of the second abutment member of said second profiled member is angled away from the second abutment member of the first profiled member to facilitate ease of entry into said bifurcated portion of the second abutment member of the first profiled member.
5. 8. An assembly according to claim 6 wherein the second abutment member of said first profiled member is retained a predetermined distance inside said bifurcated portion by means of a fastening screw which engages a recess in said bifurcated portion.
6. 9. A method for fixing a doorjamb and architrave assembly to a doorway opening comprising the steps of, a) taking an assembly comprising first and second profiled members hereinbefore described; b) attaching one of the profile members to an outer surface of a doorway opening via the first abutment member such that the first abutment member lies flush with the surface of the wall; c) bringing the other profiled member into engagement with the already attached profiled member such that the second abutment member of one of the profiled members engages the second abutment member of the first profiled member; d) screw fixing said other profiled member to an opposite outer surface of a wall via an opening in the first abutment member; e) inserting a fastener through the second abutment member of each said first and second profiled members to effect fixed engagement therebetween. DATED this Ist day of September, 2000. MICHAEL HADAD By his Patent Attorneys WALSH ASSOCIATES 17 RECEIVED TIME 1. SEP. 90:44 PRINT TIME 4. SEP. 7:16