US2914817A

US2914817A - Door unit

Info

Publication number: US2914817A
Application number: US626210A
Authority: US
Inventors: Edwin T Jackson
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-12-04
Filing date: 1956-12-04
Publication date: 1959-12-01
Anticipated expiration: 1976-12-01

Description

E. T. JACKSON DooR UNIT Dec. fl, 1959 5 Sheets-Sheet l Filed Dec. 4, 195e E. T. JACKSON Dec. l, 1959 DOOR UNIT 3 Sheets-Sheet 2 Filed Dec. 4, 1956 E. T. JACKSON DOOR UNIT Y Dec.

3 Sheets-Sheet 3 Filed` Dec.'4'. 1195's /VVENTR fo'll//fz T Jackson United States Patent O 2,914,817 noon- UNrr y Edwin T. Jackson, Tallahassee, Fla.

Application December 4, 1956, Serial No. 626,210

9 claims. (c1. 20-11) l This invention pertains to door structures, and particularly to prefabricated ready hung door units and door vstructures nishecl with such units.

Objects of the invention are to provide an improved A-prefabricated door unit and to simplify the structure of a finished door opening.

A further object is to provide, in a door-frame structure, improved `attachment means lfor attaching the jamb ings, in which:

Fig. 1 is an exploded perspective view of a door unit embodying the invention;

Fig. 2 is an enlarged` fragmentary sectional view taken along line 2-2 of Fig. 4 showing details of a `finished door structure;

Fig. 3 is a front elevation, partially broken away of a fragment of the upper left corner of the door unit of Fig. 1, representing steps in the installation of the unit in a rough door opening;

Fig. 4 is a view similar to that of Fig. 3 but taken with the installation completed;

Fig. 5 is an exploded perspective view showing a modiiied door unit structure according to the invention and representing steps in the-installation of the modied door unit in a rough door opening; and

Fig. 6 is a detail side elevational view on an enlarged scale of a fragment of the modied door unit of vFig. 5.

As seen in Fig. 1 the preferred: embodiment of a door unit in accord with this invention comprises a pair of solid jamb members 1 and 2 joined at their upper ends by a header 3 and preattached to a suitable trim strip 4. Door 5, shown exploded from the jamb members, is preferably preattached by hinges, such as hinge 6 to K jamb member 2. The -unit is provided with a detachable 'the jamb member, as measured with' respect to the vertical jamb surface 8, is a small acute angle of preferably about 7 degrees, or between about 4 degrees and about degrees. The angle between surfaces 8 and 10 should ybesuiiciently small to prevent any raising of a wedge 12 ICC as a result of the application of forces to the jamb member in a horizontal direction when the wedge is in the position hereinafter shown and described in connection with Fig. 4. Since jamb member 1 is intended for vertical positioning, the small angle relating surface 10 to back face 8 of the jamb member will correspond to or be equal to the inclination of surface 10 from the vertical.

A respective wedge 12, 13 is provided for each of the mortises 9, 14 which are out or set into each jamb member, and it will be understood that wedges 15, 16 and 17 it mortises in jamb member 2 corresponding preferably precisely with the morti-ses, such as 9 and 14. of jamb member 1. Each wedge is proportioned substantially to fill its respective mortise opening and, in the preassembled unit, as shipped to the eld and in the condition in which the jamb members are first introduced into the rough door opening which it is desired to finish, the wedges are held in place in their respective mortises, as later described, to have their outer vertical faces, such as Iface 19 of wedge 12, nearly flush with back jamb surface 8 or protruding from such surface by a small fraction of an inch, such as about 3/16 or 1/10 of an inch.

Fig. 2 shows in horizontal section a portion of the installed nish structure, taken generally along line 2-2 of Fig. 4. lamb member 1 is rigidly and securely fixed in desired plumb position with respect to face 26 of buck 23 by means of Wedge 12. The wedge has been slid downwandly in its mortise opening 9, from` the position of Fig. 3, and has its vertical outer or front face 19 engaged flat against buck face 2-6. Trim strip 4, which in the preassembled or prefabricated unit has been permanently preaxed to jamb member 1 .at its outer edge 4 by means of nails such as nail 20, lies against and is fastened to wall 21 by nail 22. Flat head wood screw 18 has its shank 31 extending through vertically extending slot 32 and threadedly engaged in wedge 12. Screw head 59 is engaged against the jamb member to hold wedge 9 to the jamb. Trim strip 7 has been applied to the opposite outer edge 1" of the jamb member 1 Iand affixed thereto during the installation procedure by nails, such as nail 29, and it is also attached to -the wall by nails such as nail 30. Nail 24 passes through the jamb member 1, through wedge 9 and into buck 23 and serves to hold the jamb member Iagainst movement away from the face of the buck, from which the member is spaced by wedge 12, and against movement in any direction parallel to the buck face 26, and it further serves to prevent any movement of the wedge from its nal position.

It Will be noted that wedge 12, and opening 9, are centered substantially midway between the outer edges 1" `and 4 of the jamb, and itwill also be seen that wedge 12 is exposed through slot 32 to the front face 25 of the jamb, being visible therethrough, and being movably adjustable therethrough primarily through the medium of screw 18, until anchored by nail 24. The accura-te locating of nail 24 is facilitated by visibility of the wedge. The position of screw 18, which is attached to the wedge, also furnishes a useful guide for the carpenter in locating nail' 24 in position tov pass through the Wedge.

Slot 32` is seen yto extend through the jamb in a direction at right angles to the -faces 25 and 8 of the jamb, or parallel to the wall 21.

Finally, door stop 27 is applied in position to cover slot 32, screw head 59, and a nail 24 and is fixed to the jamb member by smallfinishing nails, such as nail 2S, tocomplete the installa-tion.

Further details of the prefabricated unit before ins tallation and of the structure resulting from installation of the unit are shown in Figs. 3 and 4. As seen in Fig. 3, jamb member 1 has been `inserted into the rough door opening, trim strip 4 being attached to the ljamb member, and the j amb member has been properly plumb'ed and aligned with -respect to buck face 26. The jamb member may, at this point, be held in this position by nailing of trim strip 4 by nails 22 as shown in Fig. 2, such holding of the jamb members in position being of suicient strength to permit the lfurther installation steps to be taken without disturbing the alignment of the jamb member but being insufiiciently strong to provide permanently secure mounting of the members.

As seen in Fig. 3, screw 18 is disposed near the upper end '71D of slot 32 and is threaded into Wedge 9 adjacent its upper end 75 as the unit is preassemblcd and shipped to the field and as the unit is introduced into the rough door opening. The slot 32 may open into a slight bevel '76 adjacent jamb mem-ber face 34 to receive screw head 59 and thereby to permit screw head to lie flush with face 34, although, if the jamb member 1 is of soft wood, it has been found unnecessary to bevel the slot since the lmere tightening of the screw tends to sink the head into the slot sufiiciently to bring the head flush with face 34. The screw, in the position of Fig. 3, serves to hold the wedge 12 substantially completely housed in raised position within mortise opening 9, the vertical outer face 19 of the wedge being ush with, or aligned a fraction of an inch outwardly of, back face 3 of the jamb member.

With the jamb member now in desired position, screw 18 is unscrewed from wedge 12 permitting the wedge to move downwardly along wedge surface 11i of mortise 9. The screw is loosened a suflicient distance to permit the wedge to engage against the buck face 26, taking up the necessary space between jamb face 8 and buck face 26, and the screw is then tightened as necessary to bring its head again flush with jamb front surface 314. The wedge and screw will now be in the positions of Fig. 4, the vertical wedge face 19 being in contact against buck face 26 and the inclined wedge face 33 being held by screw 18 firmly against wedge surface 10 of mortise 9. Nail 24 is now driven through jamb member 1 just to one side of slot 32, through wedge 12 and into buck face 26, the preferred position and direction of nail 24 being shown by a comparison of Figs. 2 and 4.

The installation of the solid jamb unit is completed by application of trim strip 7 against the exposed edge 1" of the jamb member and the nailing of the trim strip by nails 29 and 30 to the jamb member and to the wall, respectively, and by the placing of door stop 27 in position to cover slot 32, nail 24 and screw head 59, as shown in Figs. 2 and 4.

It will be understood that the arrangement in connection with each of the wedges 13, 15, 16, 17 and its respective mortise opening, such as opening 14, is preferably identical to that specifically shown and described in connection with wedge 12 and mortise opening 9 at the upper end portion 1 of jamb member 1, and that each wedge is positioned and locked in place in turn prior to application of trim strip 7 and stop member 27. It will also be understood that checking or adjustment of the plumb position of the jamb may be made at several stages in the installation, and, before nail 24 is driven, for example, screw 18 may be loosened and the position of wedge 12 altered as necessary to correct any slight misalignment. It will be apparent that screw 18 and slot 32 permit small adjustments to be made to the wedge position even with both trim strips 4 and 7 in place if such adjustments become necessary, although only small adjustment is possible in this manner depending upon the security of nailing of the trim strips. Substantial adjustments may be accomplished, however, by loosening the trim strip wall anchor nails such as nail 30 without removing the trim strips from the jamb member, assuming that nails 24 have not been driven or have been removed.

The door unit as shown in Fig. 1 when preassembled for delivery to the building site preferably has all of the wedges firmly held in place in their respective mortise openings, by means of respective screws, such as screw 18, arranged as shown in Fig. 3. Trim strip 4 for one face of the door opening is permanently attached to the jambs 1 and 2 and to header 3 at the factory, the jambs are permanently attached to the header, while trim strip 7 and door stop 27 are removably tacked in place by means, for example, of partially driven finishing nails, such as nails 29 and 37, and nails 3S, respectively.

The extreme thickness of wedge 12 measured along upper side edge may be, for contemporary construction, between about three-quarters of an inch to about one inch and this maximum wedge thickness is preferably greater by a small fraction of an inch than the maximum depth, as measured along upper wall 36, of mortise 9. The mortise is set into a jamb member 1 which may have a thickness of about three-quarters of an inch to about one inch, but the mortise depth should be slightly less than such jamb thickness to avoid cutting through the jamb. Speciically, in an exemplary construction, wherein the thickness of the jamb member is three-quarters of an inch and the maximum thickness of the wedge is threequarters of an inch, the depth measured along wall 36 of the mortise may be between five-eighths and twentyone thirty-seconds inch, whereby the surface 19 of the wedge will lie, with the wedge housed in the mortise, up

to about one-eighth inch outwardly of jamb surface S. Such construction will take care of all usual departures from the normal standard of one-half inch clearance between the jamb and rough buck. For example, the wedge, as so proportioned, will adjust for a spacing of from about one-sixteenth or one-eighth of an inch up to a spacing of three-quarters of an inch.

The modied construction of Fig. 5 is applicable to split jamb door units wherein a door 40 is ready hung by hinges, such as hinge 41, to a jamb member 42, which, with jamb member 43, constitutes the finish jamb for the hinge side of the structure. The finish jamb for the opposite or lock side of the structure comprises upright

split jamb members

44 and 45.

lamb members

42 and 44 are connected by a header member 46 and have a trim strip 47 preferably permanently atiixed thereto along outer edge thereof during prefabrication of the door unit. Jamb

members

43 and 45 are also joined by a header member similar to member 46 but not visible in the drawing, and trim strip 48 is permanently preamxed to these jamb members along outer edges S4 thereof and to the header member. Removable door stop members 49 are supplied with the Prefabricated unit, preferably tacked in place to the jamb members by partially driven nails 76 for convenient removal from the unit at the site. The

jamb comprising members

44 and 45 is, as shown, split or divided along a line represented by edge 56 of member 44 and edge 51 or member 45, the line passing through, and preferably approximately bisecting wedges surfaces, such as the surface divided into and consisting of wedge surface portion 52 of member 44 and complementary wedge surface portion 53 of member 45. The wedge surface comprising the

portions

52 and 53 is provided by a mortise opening 54, 5S entering into the back face 56, S7 of the

jamb

44, 45.

Mortise opening portion 61 of jamb member 45 is aligned with mortise opening portion 60 and, when edges 50 and 51 are brought into proximity, such as in preparation for shipment or upon final installation of the unit, mortise openings 69 and 61 constitute aligned portions of a mortise originally formed, for example, by a single mortising cut made before splitting the respective jamb into the two

jamb members

44, 45. Wedge 62 is shown in exploded position in Fig. 5, as are the wedges, such as wedge 63, for seating in mortise openings, such as opening 64, of the hinge

side jamb members

42, 43.

Respectively similar mortise opening portions 54, 60 and 77 are arranged along jamb member 44, and respective corresponding complementary

mortise opening portions

55, 61 and 74 are provided in jamb member 45, and

respective wedges

62, 53 and 711 are shipped with ltheunit for disposition in the mortises upon installation. Wedges such as wedge 63 are also included for disposition in mortise openings in.

jamb members

42 and 43,

` such as `the opening comprising portion 64 in member 42.

AIt will be understood that the wedge and mortise arrangement of

jamb members

42 and 43 duplicates that of

members

44 and 45. While three wedges are shown for each side ofthe door unit, two such wedges at each side .may be suicient, or more than three may be desired for heavy doors, for example.

To install the split jamb unit of Fig. 5, door stop 49 is separated from the jamb members, and assembly 65, `comprising

split jamb members

42 and 44, door 40 hingedly attached to member 42 and trim strip 47 is `placed in position in the rough door opening in the wall represented by broken lines 67. The assembly is plumbed and aligned in the door opening and trim strip `47 is nailedl to the wall surface by nails such as nail 68. A `space 69 will exist between the face of the rough buck .of Vwal167 and the back face 56 or jamb member 44. A-wedge is now placed in position in one mortise opening portion in raised or housed position therein as is indicated by the position yolf wedge 58 in opening portion 60. The wedge is then pelrnitted to fall in its opening portion, `being guided by the hand of the carpenter if desired, .until it reaches the position represented by wedge 71, with the vertical outer face 78 engaged flat and firmly against the buck of wall 67, the wedge being now displaced downwardly from its upper housed position in -the mortise opening portion and being, of course, also in iirm engagement against inclined wedge surface 72 of rvthe mortise opening. Nail 73 is now driven through the -jamb member and through the wedge into the buck. This procedure is repeated for each wedge of each jamb

member

44, 42, 43 and 45. With each wedge now in position and nailed by a nail 73 as shown for wedge 71, `split jamb assembly 66, comprising

jamb members

43 and 45 andthe thereto aixed trim strip 48, is moved into the door opening. Since mortise opening portions, such as 55, 61 and 74, of the

jamb members

43 and 45 correspond precisely with mortise opening portions of the jamb members of assembly 65, assembly 66 will become exactly aligned with assembly 65 ask the mortise opening portions of assembly 66 become engaged with the wedges. Thus, inclined wedge surface portion 79 of mortise opening portion 74 cornes into precise alignment with surface portion 72 when it engages wedge 71, and surface portion 53 of mortise opening portion 55 becomes in the `same manner exactly aligned with surface portion 520i mortise opening portion 54 against wedge 62, while opening portions 60 and 61 align against wedge 53. Accordingly, when all of the Wedges have been secured properly to` hold

jamb members

42 and 44 in plumb positions, jamb assembly 66 is merely advanced into the rough opening until its trim strip 48 engages the wall 67, and thenl it, too, is nailed, by nails corresponding to nail 73, y through the

jamb members

43 and 45 and through the wedges into the buck, and by nails 8) to attach the trim `strip to the wall. Edges 5d and 5l of

jamb member

44 and 45, respectively, will be spaced apart in accord with thevariable wall thickness, and it will be noted that the wedges are visible through this space permitting the carpenter accurately to determine the correct positions for rthe nails to be driven through

jamb members

43 and 45 and through the respective wedges into the buck. A nail sodriven is shown at 81 in Fig. 6 as later described.

wedge 7l. and showing the

backufaces

56 and 57 of

jamb members

44 and 45, the parts being in the positions assumed upon completion of the installation. The wedge 71 is seen to be located below its uppermost or housed position in mortise opening 77, 74 and is seen to span between the jamb members, being substantially centered between outer jamb edges 84 and 85.

Nails

73 and 81, pointing toward the viewer in Fig. 6, are driven close to the' edges 50 and 51 of their respective jamb members and passing through the wedge 71, thereby anchoring the jamb members to the wedge and the wedge to the buck. The space between jamb edges 50 and 51 is such as required to accommodate the wall thickness between trim strips 47 and 48, and this space comprises a continuous vertical slot separating split jamb member 44 from split jamb member 45. The slot extends in a direction perpendicular to the front and back faces of the jamb, or

yparallel to the wall 67, and each wedge is exposed to the front face of the jamb, such as face 82, 83, through the space or slot defined between the inner edges of the split jamb members, permitting visibility of the wedge, for example, while driving nail 81.

The widths of the wedges and of the mortise opening are such that the wedge will enter both mortise opening portions 77 and 74 for a wall of maximum thickness of about ve and three-eighths inches, and that the wedge will not prevent the jambs to be brought closer together as for a wall thickness of about four and three-eighths inches. If the jamb members are, for example, two

inches wide, the mortise opening portions may extend approximately one inch across the face 56 and across the face 57 from the

edge

50 or 51, respectively, and if the wedge is then two and three-eighths inches Wide, edges 50 and 51 may approach to within three-eighths of an inch of each other, while for a maximum thickness wall, with

edges

50 and 51 separated by one and threeeighths inches, the wedge would be engaged one-half into each mortise opening portion. If desired, however, the wedges may be up to about three and three-eighths inches ywide and, being preferably of wood, may be quickly sawed off to a less thickness at the site before installation if thinner walls are to be accommodated.

y Door stop 49 is seen to be nailed in place, by nails 76, to jamb

members

44 and 45, covering the space between

edges

50 and 51 and covering

nails

73 and 81.

The solid jamb door unit of Figs. l-4 is particularly adapted for use in construction wherein the wall thickness is known and is the same throughout a substantial number of door openings, as, for example, in a housing project involving a number of similar dwellings, whereas the split jamb door unit of the modification shown in Figs. 5 and 6 is more suitable for stocking by millwork suppliers for individual sales of small numbers of door units, whereinthe wall thickness may vary as between plywood surfaced, dry wall and plaster constructions.

It will be seen that the elements, i.e. the wedges, which rigidly x the jamb positions in both of the constructions herein shown are self-adjusting, and that once the door jambs are properly plumbed in the opening, no fitting, measuring or adjusting steps are required to complete the installation, in either the solid jamb construction or in the split jamb construction. It will be further recognized that, in the split jamb construction, the wedges serve to What is claimed as new and what it is desired to secure by Letters Patent of the United States is:

l. A door structure comprising a nished jamb, said jamb having a back face and a front face and having a mortise opening formed in said back face, said opening being wedge-shaped and being in part defined by an upwardly extending inner wall inclined inwardly into said jamb, a downwardly pointing wedge disposed in said mortise opening and having a face in contact with said inner wall of the opening, said jamb having opposite outer edges, a respective trim strip amxed along each said jamb edge, said mortise opening and said wedge therein being substantially centered between said outer edges, said jamb being vertically slotted to provide a slot substantially midway between said outer edges extending through said jamb in a direction perpendicular to said faces thereof and opening through said inner wall to expose through said slot a portion of said wedge to said front face of said jamb whereby said wedge is accessible for aligning said jamb in the rough door opening when the jamb is in place therein.

2. In a ready hung door unit having an upstanding jamb with a back face for disposition toward the face of the rough buck and having a front face, the combination of said jamb comprising a plurality of wedge surfaces therein aligned one above the other, each said wedge surface being formed as the inner wall of a respective wedge shaped mortise set into said jamb through said back face thereof and each said wedge surface extending in a straight line and at a predetermined small angle to said back face upwardly and inwardly from a lower edge at said back face into said jamb, a plural-ity of tapered wedges having major wedge surfaces separated by substantially said predetermined angles disposed respectively in said mortises, said jamb being slotted to expose each said wedge to the front face of the jamb whereby each of said wedges `is accessible for adjusting the spacing at each wedge between the jamb and the rough buck when the jamb is in place in the rough door opening.

3. The combination according lto claim 2 wherein a respective screw `is provided for each said wedge threadedly engaged in lits respective wedge and extending through said slot, each said screw having a head at said front face and retaining the respective wedge in its said mortise.

4. In a prefabricated door unit, a jamb member a back face, a wedge surface inclined upwardly into said jamb member from a meeting line with said back face, said surface having an angle of inclination to said back face of between about 4 and about l5 degrees, said wedge surface constituting the inner wall of a mortise opening set into said jamb through said back face thereof, a downwardly pointing wedge in said opening engaging said surface, said jamb having a slot therethrough located to extend vertically along said wedge surface, and a screw extending through said slot and threadedly engaged in said wedge.

5. In a ready hung door unit having an upstanding jamb with a back face for disposition toward the face of the rough buck, the combination of said jamb comprising a plurality of wedge surfaces therein aligned one above the other, each said wedge surface being formed as the inner wall of a respective wedge shaped mortise set into said jamb through said backface thereof and each said wedge surface extending in a straight line and at a predetermined small angle to said back face upwardly and inwardly from a lower edge at said back face into said jamb, said jamb being divided into two separate split jamb members along a vertical line passing through each of said wedge surfaces whereby each said split jamb member' comprises a portion of each of said surface, and a plurality of tapered wedges having major wedge surfaces separated by substantially said predetermined angles disposed respectively in said mortises and each said wedge being proportioned to engage along one of its major faces both of said surface portions of the respective mortise and when the unit is installed Vto span between said split jamb members.

6. A prefabricated door unit comprising a solid jamb member having opposite outer edges and front and back faces, a trim strip permanently afhxed to one said edge, a trim strip removably attached to the other said edge, a door stop removably attached to said front face, a door hingedly attached to said front face, a vertically elongated slot extending through said jamb member substantially midway between said edges and in a direction substantially perpendicular to said faces, a screw having a head substantially flush with said front face and having a shank extending generally horizontally through said slot, said back face comprising a restricted planar surface portion which is inclined by a small angle to the vertical, a wedge having a first face which lies in a vertical plane parallel to the plane of said front face and having a second face inclined from said vertical plane and lying ush against said restricted surface portion and slideably vertically therealong, said slot opening through and extending along said restricted surface portion in an upward and downward direction, said screw being threaded into said wedge through its said inclined face and maintaining said inclined face thereof in selected upwardly and downwardly adjustable position against said restricted Surface portion, said door stop being disposed in covering relation to said slot and screw head at said front face.

7. A Prefabricated door unit comprising a solid jamb member having opposite outer edges and front and back faces, a trim strip permanently affixed to one said edge, a trim strip removably attached to the other said edge, a door stop removably attached to said front face, a door hingedly attached to said front face, an elongated slot extending through said jamb member in a direction substantially perpendicular to said front faces and having opposite corresponding elongated openings through said front and back faces, said back face having a restricted surface portion through which said slot opens and which is inclined by a small angle out of parallelism with said front face in the direction in which said slot opening therein extends, a wedge having major faces related to each other by said small angle and having one said face engaged ilat against said restricted surface portion, `and a screw having a head at said front face and a shank passing through said slot and threadedly engaged in said wedge through said one face thereof, said wedge being oriented on said restricted surface portion in a direction to dispose its other said major face parallel to said front jamb face and being movable along said restricted surface portion to vary the spacing between said lfront face and said other major face and being lockable in selected position along said restricted surface portion by tightening of said screw.

8. In a door structure, the combination of a plurality of small angle wedges, a jamb having a back face and a front face, each said wedge having one major face thereof engaging a respective portion of said back face, said jamb being plurally slotted therethrough to provide va respective elongated rear slot opening extending along each said back face portion, each said slot having a corresponding front opening through the front face of the jamb, and a respective screw for each said wedge threaded into the wedge through its said one major face and each screw extending through a respective said slot and having a head engaging said jamb at said front face thereof, each said screw being slideable along its respective slot thereby to slide its respective wedge along the respective said back face portion and each said screw being tightenable by screwing into said wedge thereby to anchor the respective wedge -in adjusted position against its respective back face portion, a door buck having a respective face portion facing and spaced from each respective said back face portion and forming therewith a respective pair of facing face portions having a respective said wedge interposed therebetween, one said face portion of each said pair being inclined by a small angle out of parallelism with the plane of the other face portion of the pair.

9. In a closure frame for finishing a rough wall opening, a respective pair of split jamb members for each side of the opening, said jamb members having respective inner edges for disposition toward and adjacent each other within said opening at each side ,thereof and each spaced from the corresponding respective rough buck face, a plurality of wedges, each said jamb member of each said pair having a mortise opening through its said inner edge and forming a wall extending upwardly into the member from, and at a predetermined angle to, its back face and intersecting said back face in a horizontal line, at least one of said mortise openings of one of said jamb members yat each said side being aligned with a corresponding one of said mortises in the other said jamb l member at that side, a respective one of said wedges being disposed in said one mortise opening of said one jamb member at each side and extending beyond said inner edge thereof'toward said other jamb member, the major faces of each wedge being related by said predetermined angle of the respective mortise and being engaged respectively flat against the respective buck face and the respective mortise wall, means lining said one jamb member rand said one wedge at each side rigidly to the respective buck whereby said wedges form positioning guides entering said respective aligned mortises for said other jamb members, and means to X said other jamb members to said Wedges.

References Cited in the le of this patent UNITED STATES PATENTS 2,186,458 Lehman .l an. 9, 1940 2,651,814 Lester Sept. 15, 1953 2,753,602 Ringle July 10, 1956 2,781,559 Savoie Feb. 19, 1957