US3059341A - Pattern for installing door jamb - Google Patents

Description

Oct. 23, 1962 R. E. BECKER 3,059,341

PATTERN FOR INSTALLING DOOR JAMB Filed June 1, 1959 K 805527 B t/(519 IN VEN TOR.

I 1 3 E 1 BY 351% in 1 a 91 14 7' rap/V55 Unite States 3,059,341 PATTERN FOR INSTALLING DOOR JAMB Robert E. Becker, 315 Cameron Place, Glendale 7, Calif. Filed June 1, 1959, Ser. No. 817,281 Claims. (Cl. 33197) This invention relates to an improved pattern device for use in mounting and properly positioning a door jarnb or frame within a rough opening in a building wall. The pattern of the present invention is in certain respects particularly adapted for use in performing certain methods which are disclosed and claimed in my copending'application Serial No. 817,255, filed June 1, 1959, on Door Frame Installing Method.

In forming the initial rough opening for a door in a building, no attempt is usually made to be completely precise as to the exact dimensions of the opening, or its exact alignment with respect to the true vertical. Instead, the opening is in most cases purposely formed somewhat oversize, to assure adequate room for reception of the jamb and door, and there is almost always some inaccuracy in the alignment of the sides, top and bottom of the doorway with respect to the true vertical and horizontal. These inaccuracies are overcome subsequently, in a conventional door hanging operation, by a rather time consuming process which includes first accurately positioning the jamb members in the rough opening to form a doorway of proper size and orientation, and then inserting and securing wedges between the jamb and rough opening at locations to occupy whatever space may be required to hold the jamb in its desired position.

In my above identified application, 1 have disclosed a different type of door installing method, in which special spacer blocks are very accurately positioned and aligned within the door opening prior to movement of the jamb into the opening, rather than after positioning of the jamb, so that the pre-setting of these blocks functions to automatically locate the jamb structure in its proper position when it is moved into the doorway. The pattern of the present invention is in certain respects especially adapted for use in determining the positioning of these blocks in performing such a method.

The present pattern is preferably designed to function as a router guide, which directs a router as it forms recesses within which the spacer blocks are to be mounted. The routed recesses can thus be accurately located in a manner such that the blocks, when placed in the recesses, will form a precisely dimensioned and oriented structure for receiving and accurately locating the jamb. A level or other similar device is mounted on the pattern for determining its proper orientation with respect to the true vertical, irrespective of any inaccuracies in the rough opening.

The pattern may include two vertically extending guide structures to be received adjacent the opposite sides of the rough opening, and typically interconnected by two horizontally extending connector units. These connectors can be adjusted to different lengths, for use with different widths of doors. In one form of the invention the connectors are hinged to the vertical members in a manner allowing slight swinging of those members in unison in order to shift them into true vertical positions. In another form of the invention, the connectors are rigidly attached to the vertical members, and the entire frame is bodily shiftable to a proper position of alignment with the vertical by actuation of an adjustable leg on one of the vertical members.

The above and other features and objects of the present invention will be better understood from the following detailed description of the typical embodiments illustrated in the accompanying drawing, in which:

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FIG. 1 is a view showing a pattern constructed in accordance with the invention, positioned within a rough opening in a building wall;

FIG. 2 is an enlarged perspective view of the FIG. 1 pattern;

FIG. 3 is an enlarged section taken on line 33 of FIG. 1;

HQ. 4 is a horizontal section showing the routing of one of the spacer block recesses;

FIG. 5 is a view similar to FIG. 4, but showing the spacer block and frame assembly nailed into position;

FIG. 6 shows the manner in which one of the horizontal connector assemblies of the pattern folds;

FIG. 7 is a view showing one of the router guide apertures of the pattern device; and

FIG. 8 is a front view of a variational form of pattern embodying the invention.

Referring first to FIG. 1, I have represented at it a conventional rough opening for receving a door jamb and door within a wall 11 of a building. Positioned in the rough opening is a pattern 19 constructed in accordance with the invention. The floor of the building is represented at 12. At each side of opening 10, there is an essentially vertically extending wooden stud13, to the inner side of which there is mounted an essentially vertically extending trimmer 14, with these trimmers supporting an essentially horizontal header 15 extending across the top of opening .10. The members 13 and 14 are normally of nominal two inch by four inch cross section, while the header 15 is normally a four inch by four inch board. At its opposite sides, wall 111 has conventional lath and plaster, wall board, or any other similar material, as represented at 16 (see FIG. 4).

In forming the rough opening in the Wall, no attempt is made to mount boards 14 in precisely vertically extending positions, or in accurately controlled spaced relation. For example, in the particular opening shown in FIG. 1, the members 14 are inclined with respect to the true vertical by the angle represented at 17 (or may in some cases be slightly warped or twisted). Similarly, header 15 and floor surface 12 may be inclined with respect to the true horizontal by a small angle such as that represented at 1% in FIG. 1.

The pattern device 19 is utilized for the purpose of locating a door jamb within opening 10 in a manner such as to compensate for the above mentioned inaccuracies in the size and shape of the rough opening, This pattern 19 includes two vertically extending side members 26 and 21, to be received adjacent the members 14 of the rough opening, and frame 19 includes also two essentially horizontal connector units 22, and 23. Each of the two vertically extending members 2t? and 21 is of uniform horizontal cross section along its entire height, except where that cross section is interrupted at certain locations to provide various aperture which will be discussed as this description proceeds. The horizontal cross sections of the two members an and 21 are indicated clearly in FlG. 3.

Each of the two parts Ztl and 21 may be formed of a rigid piece of fairly thin metal, typically aluminum, either sheet metal deformed to the illustrated cross section, or metal extruded to that cross section. Referring to FIG. 3, it is seen that the two parts 20 and 21 have outer flanges 123 lying in a common vertical plane, and adapted to engage and abut against the outer surface 124 of wall 11 at opposite sides of opening 10. From the inner edges of these flanges 123, the parts 20' and 21 have portions 24. which are adapted. to project into rough opening it These portions 24 of the two elements 2t! and 21 extend parallel to one another, and lie in two spaced vertical planes Wl'llCll are perpendicular to the two outer laterally projecting flanges 123 of parts 20 and 21. At their innermost extremities within opening 10, the parts and 21 have short flanges which may extend parallel to and project in the same direction as flanges 123. The extreme edges 26 of flanges 25 extend parallel to planar portions 2d of parts 20 and 21, and extend directly vertically when the various portions 123, 24 and 25 are also positioned to extend vertically.

In order to accurately align portions 24 of elements 20 and 21 with the true vertical, there is attached to the front face of flange 123 of part 26 a bubble type level device 27, the bubble of which will indicate when portion 24 is positioned to be in a directly vertically extending plane. Further, the two connector structures 22 and 23 are so designed that, if the portion 24 of element 2 is in a true vertical plane, then the portion 24 of part 21 is also in an exactly vertical position.

The forward flanges 123 of parts 20 and 21 are designed to be easily but detachably secured to wall 11, after members 20 and 21 have been accurately adjusted to proper vertical positions. For thi purpose, flanges 123 may contain openings 28 through which nails may be driven into wall 11 (and into boards 13 or 14) for attaching flanges 123 to the wall in the position represented in FIG. 3. There may typically be two of the openings 28 in member 20, near its upper and lower ends, and a single opening 28 in member 21, typically toward the center thereof.

The portion 24 of each member 20 and 21 contains a series of vertically spaced router guide apertures or windows 29, which may be somewhat elongated horizontally, a shown, and whose peripheral edges define guides for directing a router as it cuts out portions of boards 14. The front and rear ends 30 of each aperture 29 (see FIG. 7) may be rounded to receive the tubular pilot or guide portion 31 (see FIG. 4) of a conventional router tool 32. The top and bottom edges 130 of each aperture may be straight and parallel and extend horizontally. The planar base surface 33 of router 32 is engageable, in use, against the planar surface 34 of portion 24 of each of the vertically extending members 20 and 21, with pilot tube 31 and router cutter 35 projecting through aperture 29 to rout out recesses 36 of predetermined size and depth within members 14. As is seen clearly in FIG. 4, the short flange portion 25 of each member 20 and 21 projects toward member 14, axially of router cutter 35, a distance corresponding to the distance that pilot 31 projects in that same direction, when the router is in its FIG. 4 position of use. The vertical height of each of the router guide apertures 29 may be substantially the same as the diameter D of pilot 31, so that the router will function to rout out a recess of the shape represented in FIG. 7, having upper and lower parallel edges 37, and rounded ends 38 of a radius corresponding to the radius of cutter 35. The exposed end surface 37 of cutter 35 extends essentially transversely of the rotary axis 38 of the router, and is designed to form a planar inner wall 139 of the routed recess, which wall 139 extends directly transversely of axis 38. The previously mentioned peripheral edges 37 and 38 of rounded recess 36 normally extend perpendicular to inner wall 39, and therefore parallel to axis 38 of the router.

The router guide apertures 29 are so located on portions 24 of parts 20 and 21 that the routed recesses 36 are formed entirely within the wooden member 14, and preferably do not extend laterally far enough to reach the plaster or other similar material represented at 16. There may typically be five of the apertures 29 formed in each of the parts 20 and 21, with the upper and lower ones of these apertures 29 being spaced a short distance from the upper and lower ends of parts 20 and 21 (say about six inches from those ends). The center one of the apertures 29 may be located at a height corresponding to the height of the door latch and knob, so that one of the routed recesses and contained spacer blocks is located just behind,

and affords a good backing for the keeper portion of the lock mechanism.

The two connector units 22 and 23 of pattern 19 interconnect vertically extending members 20 and 21 in a manner maintaining them parallel, while at the same time allowing swinging movement of these two parts 20 and 21 in unison about their lower floor engaging ends, and through a sulficient range of movement to enable portions 24 of parts 29 and 21 to be accurately aligned with the true vertical in any door opening within which pattern 19 may be used. Each of the connector units 22 and 23 includes a first tube 39 of square cross section, hinged to member 20, and a second square cross section tube 4!) hinged to member 21. Tube 40 is of a size to fit closely and telescopically within tube 39, and to be slidably guided thereby for horizontal telescoping movement longitudinally into and out of tube 39. The connections between tubes 39 and 46 and the two members 2%) and 21 respectively are formed by two hinges 4-1 and 42, whose hinge axes are disposed parallel to one another, and are perpendicular to the plane of flanges 23, and which axes extend horizontally adjacent the inner side of portions 24 of members 20 and 21, so that the two connectors 22 and 23 form with members 2%) and 21 a hinged parallelogram type of structure capable of swinging laterally to align parts 20 and 21 with the true vertical, as discussed previously. The outer ends 43 and 44 of tubes 39 and 40 terminate at a location spaced a substantial distance from members 26 and 21, in order to allow members 2%) and 21 to swing laterally in either direction, without obstruction by those ends 43 and 44 of the tubes.

In order to releasably retain tubes 39 and 40 in any of different relatively adjusted positions, to thereby vary the horizontal spacing between members 20 and 21 for use in different width doorways, there is provided a releasable detent or latching mechanism between parts 39 and 40, as represented generally at 45. This detent mechanism includes a bolt 46 (see FIG. 3), whose head 47 may be welded rigidly at 48 to the inner side of tube 49, and whose shank 49 projects horizontally through a side Wall 51] of tube 40, and through a slot 51 formed in the side wall 52 of outer tube 39. At its outer end, shank 49 of bolt 4'7 carries a nut or other enlargement 53, secured rigidly in fixed position on the shank, and against which a coil spring 54 bears. The inner end of coil spring 54 exerts axially inward force against a shoulder formed in an annular tubular part 55, which is disposed about and is movable axially of bolt 47. The inner end portion of part 55 forms an externally cylindrical latching element 56, of a size corresponding to, and adapted to fit closely within, any of several enlarged circular portions 57 of the slot 51 in part 39. At locations between these horizontally spaced enlarged portions 57, the slot 51 has reduced width portions 58, of a width corresponding to the diameter of shank 49 of bolt 46. When portion 56 of element 55 is received within any of the enlargements 57 of slot 51, then the element 55 functions to very positively hold parts 39 and 40 in that particular adjusted position. In order to shift between different adjusted positions, a user merely pulls element 55 outwardly to the broken line position represented in FIG. 3, in which position portion 56 of element 55 is no longer received within slot 51, so that the bolt 46 can slide longitudinally along slot 51 until element 55 reaches another desired setting, at which setting element 55 is urged by spring 54 into another of the circular enlarged portions 57 of slot 51, to thereby releasably retain the unit 19 in a second condition. Whenever the pattern is in use, the two horizontal connector units 22 and 23 are of course adjusted to a common length, so that the two members 20 and 21 are parallel to one another.

When members 39 and 40 are relatively extended to a maximum length position, bolt 46 moves completely out of the open inner end 59 of slot 51. Also, tube 40 moves completely out of the larger guide tube 39. However,

when the telescopic parts reach this completely extended condition, a second connection between parts 39 and 4% becomes eifective, which connection forms a hinge joint between each of the pairs of tubes 39 and 45), allowing the tubes to fold to the broken line position represented in FIG. 2. Referring particularly to FIG. 6, this hinge joint may include a horizontal hinge pin 60 which is carried by inner tube 40 and extends between its opposite side walls, and which is adapted to be received and confined within a rigid tab 61 projecting from tube 39. in the upper connector assembly 22', tab 61 is formed at the upper edge of tube 39, whereas in the lower assembly 23, tab 61 and the hinge pin 60 are formed at the upper sides of tubes 39 and 40, so that upper connector 22 folds downwardly, and lower connector 23 folds upwardly, as seen clearly in FIG. 2. In order to allow for this type of folding movement of connectors 22 and 23, the hinges 41 and 42 of the upper connector assembly are located at the underside of tubes 39 and 40 (see FIG. 2), while the hinges 4-1 and 42 of the lower connector assembly 23 are located at the upper side of the tubes. The hinge axes of the central connections 6d6 1 extend parallel to the axes of hinges 41 and &2.

FIG. 6 shows the central hinge connection of the upper connector assembly. The construction of the lower connector assembly will be apparent from this showing, since it is merely inverted with respect to the illustrated arrangement. In FIG. 6, tab 61 projects outwardly from the end of tube 39, and gradually curves upwardly to a point 62, at which it doubles back and then extends parallel to itself at 63 to ,its end 64. The width of tab 61 is less than the width of inner tube '40, and the upper wall of tube 40 is cut away at 165 (see FIG. 3) to form a longitudinally extending slot within which tab 61 is received. Hinge pin 60 is of a diameter to fit closely within the guide recess formed between the upper and lower portions of tab 61, and pin 6%) is so positioned that, just before tube 40 moves out of tube 39, pin 60 moves into the guide recess formed between the upper and lower portions of tab 61 so that pin 60 can ultimately move to the broken line position within the curved extremity 62 of tab 61, to thereby hinge the tube 40 for relatively swinging or folding movement as represented in broken lines in FIG. 6. The construction of the parts is such that this folding movement of parts 39 and 40 can continue until they are substantially parallel to one another, and members and 21 are therefore in very closely spaced side by side positions. In this folded condition of the apparatus, the entire pattern 19 is easily transportable. The tab 61 curves upwardly in the manner illustrated, in order that the ultimate hinging position of pin 61% within the curved end portion 62 of tab 6 1 may be located entirely above the plane of the upper surface of tube 39, so that interengagernent between the two tubes 39 and 4% can not interfere with complete folding of these parts to parallel positions. As will be apparent, the return portion '63 of tab 61 prevents escape of hinge pin 60 from within the tab while tube 40 is out of tube 39. When the tubes are again moved into telescopically interfitting relation, however, pin 60 automatically slides out of tab 61.

To now describe a complete door installing operation utilizing the pattern shown in FIGS. 1 through 7, assume that the wall and door opening have already been constructed to the condition represented in FIG. 1. A workman first opens pattern 19 to the condition shown in FIG. 2, with connector units 22 and 23 adjusted to a proper width for the particular door and jamb which are to be installed. Pattern 19 is inserted into the door opening to the position of FIG. 1, with the lower ends of vertical members 20 and 21 resting on floor 12 adjacentthe two members 14 respectively, and the upper ends of members 20 and 21 are swung laterally through a slight angle, and in unison as assured by hinge connections 41 and 42 until the bubble type level device 27 indicates that portions 24 of 20 and 21 are properly aligned with the true vertical.

These members 24 and 21 are then securely fastened in that properly oriented position, by application of nails through apertures 28 and into boards 14, and with flanges 123 of members 20 and 21 abutting against and parallel to outer wall surface 16'. As will be apparent, in this condition of the pattern, the upper and lower connectors 22 and 23 may not extend exactly pependicular to vertical members 2% and 21. However, it has been calculated that any slight change in the horizontal spacing of members 2i) and 21 which may result because of this nonperpendicular relation can not be more than a few thousandths of an inch, and can not possibly be great enough to be of any significance at all in a door hanging operation.

With the pattern 19 secured in its properly aligned position within door opening 10, the workman then utilizes router 32 in the manner represented in FIG. 4 to rout out individual recesses 36 at the location of each of the router guide apertures 29 in members 29 and 21. Because of the accurate prealignment of pattern 19 with the true vertical, the inner walls 39 of the various routed recesses at each side of the doorway will all be accurately aligned vertically with one another. When all of the recesses 36 have been formed, pattern 19 is removed from the doorway, by removing the retaining nails, and individual spacer blocks of a predetermined common spacing thickness are nailed into the various recesses 36. The inner surfaces 67 of these blocks *65 are then automatically in vertical alignment (at each side of the doorway).

After blocks 65 have been nailed into position, there is mounted in the doorway a door frame structure which includes a jamb member 68 (see FIG. 5) extending vertically along the inner side of each of the members 14, and nailed to its carried blocks 65. These blocks thus hold the jamb members very accurately in proper vertical planes, spaced properly for receiving a door of the desired size. To the opposite sides of jamb 68, there are normally attached two facing or casing boards 69. A similar jamb and attached facing boards are nailed in position across the top of the doorway, with the top jamb typically interfitting with the upper ends of the side jamb members as discussed in my above mentioned copending application. The top jamb and facing boards may be properly aligned with the horizontal by first placing a door in the doorway, and then aligning the top jamb in closely spaced parallel relation with respect to the top edge of the door.

After the door frame has been installed, it is then an easy job to hang a door within the very accurately dimensioned and vertically aligned aperture formed by the doorway. A close and accurate fit of the door is assured on each installing operation, and the entire door installing procedure can be completed easily in a matter of just a few minutes.

P16. 8 shows a variational form of pattern 1% which can be utilized in place of the pattern 19 if desired. This pattern 19a may be considered as identical with pattern 19, except in the following respects. In the first place, horizontal connectors 22a and 23a have their square tubes 39a and tea rigidly welded at 139 to vertical members Zita and 21a (in perpendicular relation), rather than being hinged thereto. Further, there are no central hinge connections such as the one shown at 6tl-61 in FIG. 6. Consequently, the pattern forms a rigid permanently rectangular non-folding structure. In order to allow for shifting of the members 20a and 21a to positions in which the portions thereof corresponding to portions 24 in FIG. 3 lie in true vertical planes, even though floor 12a may not be exactly horizontal, member 21a has a vertically adjustable leg 30, having a floor engaging foot '81, and having a threaded screw portion threaded engaging a nut 32 rigidly attached to member 21a. A knurled enlargement 83 may be provided on leg 80, so that a user may manually adjust the leg relative to member 21a until level device 27a indicates that members 26a and 21a are in proper vertical positions. The pattern i then nailed in this position, and the rest of the installin method is completed in the same manner as discuss with pattern 19.

I claim:

1. A pattern for use in installing a door jamb within a rough opening in a wall having two approximately vertical frame members forming the opposite sides of said opening, said pattern including two spaced generally vertically extending structures to be received adjacent the inner sides of said two frame members respectively and each having portions defining a plurality of vertically spaced router guides for guiding a routing tool as it cuts out a plurality of vertically spaced recesses in the associated one of said frame members, two vertically spaced connector units extending generally horizontally between and interconnecting said two structures, connections pivotally attaching the opposite ends of each of said connector units to said generally vertical structures respectively so that the upper ends of the two structures can swing laterally in unison, and a device for accurately indicating when said two structures are oriented in a predetermined relation with respect to the true vertical, each of said connector units including two sections which are longitudinally slidable relative to one another to vary the length of said units and thereby vary the horizontal spacing between said two structures, and means for pivotally connecting one of said relatively slidable sections to the other at a location between said vertical structures so that the two sections can fold relatively at said location and to positions in which said sections extend generally vertically to thereby move the two vertical structures relatively together.

2. A pattern for use in installing a door jamb within a rough opening in a wall having two approximately vertical frame members forming the opposite sides of said opening, said pattern including two spaced generally vertically extending structures to be received adjacent the inner sides of said two frame members respectively and each having portions defining a plurality of vertically spaced router guides for guidin a routing tool as it cuts out a plurality of vertically spaced recesses in the associated one of said frame members, two vertically spaced connector units extending generally horizontally between and interconnecting said two structures, connections pivotally attaching the opposite ends of each of said connector units to said generally vertical structures respectively so that the upper ends of the two structures can swing laterally in unison, and a device for accurately indicating when said two structures are oriented in a predetermined relation with respect to the true vertical, each of said connector units including two sections which are longitudinally slidable relative to one another to vary the length of said units and thereby vary the horizontal spacing between said two structures, detent means for releasably locking said sections of each connector unit in any of a plurality of different relative settings, and means for pivotally connecting one of said relatively slidable sections to the other at a location between said vertical structures so that the two sections can fold relatively at said location and to positions in which said sections extend generally vertically to thereby move the two vertical structures relatively together.

3. A pattern for use in installing a door jamb within a rough opening in a wall having two approximately vertical frame members forming the opposite sides of said opening, said pattern including two spaced generally vertically extending structures to be received adjacent the inner sides of said two frame members respectively and each having portions defining a plurality of vertically spaced router guides for guiding a routing tool as it cuts out a plurality of vertically spaced recesses in the associated one of said frame members, two vertically spaced connector units extending generally horizontally between and i connecting said two structures, connections pivotally attaching the opposite ends of each of said connector units to said generally vertical structures respectively so that the upper ends of the two structures can swing laterally in unison, and a device for accurately indicating when said two structures are oriented in a predetermined relation with respect to the true vertical, each of said connector units including two sections, a first of which is tubular and the second of which is telescopically received within and longitudinally slidable relative to and guided by said first section to vary the length of said units and thereby vary the horizontal spacing between said two structures, said sections being relatively slidably movable to a position of maximum extension in which said second section is sufficiently withdrawn from the first section to no longer be guided thereby for said telescopic sliding movement, and means forming a pivotal connection between said sections in said position of maximum extension pivotally connecting adjacent ends of said sections together at a location intermediate said two vertical structures for relative folding movement to position in which said sections extend generally vertically and generally parallel to said structures to thereby move the two structures relatively together.

4-. A pattern as recited in claim 3, including detent means for releasably locking said sections of each connector unit in any of a plurality of different relative longitudinal settings.

5. A pattern for use in installing a door jamb within a rough opening in a wall having two approximately vertical frame members forming the opposite sides of said opening, said pattern including two spaced generally vertically extending structures to be received adjacent the inner sides of said two frame members respectively, two vertically spaced connector units extending generally horizontally between and interconnecting said two structures, connections pivotally attaching the opposite ends of each of said connector units to said generally vertical structures respectively so that the upper ends of the two structures can swing laterally in unison, and a device for accurately indicating when said two structures are oriented in a predetermined relation with respect to the true vertical, each of said connector units including two sections which are longitudinally slidable relative to one another to vary the length of said units and thereby vary the horizontal spacing between said two structures, and means for pivotally connecting one of said relatively slidable sections to the other at a location between said vertical structures so that the two sections can fold relatively at said location and to positions in which said sections extend generally vertically to thereby move the two vertical structures relatively together.

6. A pattern for use in installing a door jamb within a rough opening in a wall having two approximately vertical frame members forming the opposite sides of said opening, said pattern including two spaced generally vertically extending structures to be received adjacent the inner sides of said two frame members respectively, two vertically spaced connector units extending generally horizontally between and interconnecting said two structures, connections pivotally attaching the opposite ends of each of said connector units to said generally vertical structures respectively so that the upper ends of the two structures can swing laterally in unison, and a device for accurately indicating when said two structures are oriented in a predetermined relation with respect to the true vertical, each of said connector units including two sections which are longitudinally slidable relative to one another to vary the length of said units and thereby vary the horizontal spacing between said two structures, detent means for releasably locking said sections of each connector unit in any of a plurality of different relative settings, and means for pivotally connecting one of said relatively slidable sections to the other at a location between said vertical structures so that the two sections can fold relatively at said location and to positions in wh said sections extend generally vertically to thereby move the two vertical structures relatively together.

7. A pattern for use in installing a door jamb wit a rough opening in a wall having two approximately vertical frame members forming the opposite sides of said opening, said pattern including two spaced generally vertically extending structures to be received adjacent the inner sides of said two frame members respectively, two vertically spaced connector units extending generally horizontally between and interconnecting said two structures, connections pivotally attaching the opposite ends of each of said connector units to said generally vertical structures respectively so that the upper ends of the two structures can swing laterally in unison, and a device for accurately indicating when said two structures are oriented in a predetermined relation with respect to the true vertical, each of said connector units including two sections, a first of which is tubular and the second of which is telescopically received within and longitudinally slidable relative to and guided by said first section to vary the length of said units and thereby vary the horizontal spacing between said two structures, said sections being relatively slidably movable to a position of maximum extension in which said second section is suificiently withdrawn firom the first section to no longer be guided thereby for said telescopic sliding movement, and means forming a pivotal connection between said sections in said position of maximum extension pivotally connecting adjacent ends of said sections together at a location intermediate said two vertical structures for relative folding movement to positions in which said sections extend generally vertically and generally parallel to said structures to thereby move the two structures relatively together.

8. A pattern for use in installing a door jamb within a rough opening in a wall having two approximately vertical frame members forming the opposite sides of said opening, said pattern including two spaced generally vertically extending structures to be received adjacent the inner sides of said two frame members respectively, two vertically spaced connector units extending generally horizontally between and interconnecting said two structures, connections pivotally attaching the opposite ends of each of said connector units to said generally vertical structures respectively so that the upper ends of the two structures can swing laterally in unison, and a device for accurately indicating when said two structures are oriented in a predetermined relation with respect to the true vertical, each of said connector units including two sections, a first of which is tubular and the second of which is telescopically received within and longitudinally slidable relative to and guided by said first section to vary the length of said units and thereby vary the horizontal spacing between said two structures, said sections being relatively slidably movable to a position of maximum extension in which said second section is sufiiciently withdrawn from the first section to no longer be guided thereby for said telescopic sliding movement, and means forming a pivotal connection between said sections in said position of maximum extension pivotally connecting adjacent ends of said sections together at a location intermediate said two vertical structures for relative folding movement to positions in which said sections extend generally vertically and generally parallel to said structures to thereby move the two structures relatively together, said last mentioned means including a hinge pin carried by one of said sections, and a hinge tab carried by the other section and movable into and out of pivoting relation with respect to said hinge pin upon relative sliding movement of said sections into and out of said position of maximum extension.

9. A pattern for use in installing a door jamb within a rough opening in a wall having two approximately vertical frame members forming the opposite sides of said opening, said pattern including two spaced generally vertically extending structures to be received adjacent the inner sides of said two frame members respectively, two vertically spaced connector units extending generally horizontally between and interconnecting said two structures, connections pivotally attaching the opposite ends of each of said connector units to said generally vertical structures respectively so that the upper ends of the two structures can swing laterally in unison, and a device for accurately indicating when said two structures are oriented in a predetermined relation with respect to the true vertical, each of said connector units including two sections, a first of which is tubular and the second of which is telescopically received within and longitudinally slidable relative to and guided by said first section to vary the length of said units and thereby vary the horizontal spacing between said two structures, a spring pressed detent pin movably mounted to one of said sections, the other section containing a series of spaced apertures within which said detent pin is selectively receivable to detent the sections in different relative longitudinal settings, said sections being relatively slidably movable to a position of maximum extension in which said second section is sufficiently withdrawn from the first section to no longer be guided thereby for said telescopic sliding movement, and means forming a pivotal connection between said sections in said position of maX- imum extension pivotally connecting adjacent ends of said sections together at a location intermediate said two vertical structures for relative folding movement to positions in which said sections extend generally vertically and generally parallel to said structures to thereby move the two structures relatively together, said last mentioned means including a hinge pin carried by one of said sections, and a hinge tab carried by the other section and movable into and out of pivoting relation with respect to said hinge pin upon relative sliding movement of said sections into and out of said position of maximum extension.

10. A pattern as recited in claim 9, in which said apertures are joined by a slot extending longitudinally along the section which contains said apertures, an element mounting said detent pin and movably received within said slot and movable out of an end of said slot in said position of maximum extension of the sections.

References Cited in the file of this patent UNITED STATES PATENTS 1,003,517 Scelza Sept. 19, 1911 1,004,471 Rose Sept. 26, 1911 1,066,606 Hansen July 8, 1913 1,627,175 Hansen May 3, 1927 1,788,256 Sherwin Jan. 6, 1931 2,748,493 Williams June 5, 1956 2,771,688 Baker Nov. 27, 1956

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