US 3636672 A
Description (OCR text may contain errors)
United States Patent 1151 3,636,672 Fink 1 1 Jan. 25, 1972  SNAP-IN JAMB ANCHOR FOREIGN PATENTS OR APPLICATIONS 72 Inventor; Kenneth w Fink, Cincinnati, Ohio 348,081 5/1931 Great Britain ..52/2 1 3  Assignee: The Steelcraft Manufacturing Company primary Examine, F|-ank Abbott Assistant Examiner-S. D. Burke 11] z 2  Filed Dec 1 1969 Attorney-Wood, Herron & Evans  Appl. No.2 884,578
.  ABSTRACT  U.S.Cl ..52/2l4,52/213,52/2l7 A snap-in jamb anchor comprising a right angular bracket  lnt.Cl. ..E06bl/04,E06b1/16 having a horizontal wedging plate arranged to establish a  Field of Search ..52/213, 214, 217, 715, 13-15, wedge-type friction fit with the interior surface of channel I 1 2/ 7; 4 4 shaped sheet metal doorjambs at opposite sides to provide a connection between the horizontal girder of a building and the  References Cited jambs, thereby to support the doorframe within an opening of a sheet metal wall. Jamb extensions may be secured to a verti- UNITED STATES PATENTS cal flange of each jamb anchor and extend upwardly above the 1 208,737 12/1916 Braun.....'. ..s2/213 head" 0f the doorhame m a girder which is located 2:53L075 11/1950 Miller "52/213 x above the header so as to act in combination with the jamb 2,742,117 4/1956 Tolmanmu 52/213 X anchors in stabilizing the upper portion of the metal door- 3,024,878 3/1962 Huggins, Jr. 52/213 x frame 1 ""8- 3,103,263 9/1963 Leeser ....52/213 3,222,833 12/1965 Woodrum.. ....s2/211 7 Clams 12 3,363,392 1/1968 Boughner ..52/213 X a 4? l 34 3e i 3 PATENIEUmzsmz SHEU 2 OF 4 INVENTOR.
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- SNAP-IN JAMB ANCHOR BACKGROUND OF THE INVENTION The invention relates to sheet metal building walls consisting of vertical fluted panels, sometimes having load-bearing capacities and is of the oneor two-story type and resting upon a concrete slab. The panels have an intermediate horizontal girder located at midpoint along the height ofthe doorjamb, with a roof support beam or girder at its top edge for supporting the roof structure. The structure includes a sectional doorframe formed of sheet metal and set in an opening precut in the sheet metal wall panels.
One of the primary objectives of the invention has been to provide a snap-in jamb anchor which interfits the sheet metal vertical doorjambs to provide a firm reliable connection between the jamb and the end portions of the intermediate girder for anchoring the doorframe in place.
The doorframe, for which the jamb anchor is intended, is of sectional construction comprising vertical jambs and a horizontal header, these members being generally channelshaped in cross section, each having a web and a pair of limbs' extending from opposite edges of the web. The free ends of the web include right angular flanges turned inwardly toward one another.
The snap-in jamb anchor is in the form of a right angular bracket having a horizontal wedging plate which establishes a wedging engagement between the internal surfaces of the web and flanges of the jamb. The horizontal plate of the jamb anchor projects outwardly from between the flanges of the jamb and is seated upon and connected to the top surface of the intermediate girder to secure the doorframe within the door opening.
Another objective has beento provide a jamb anchor in which the horizontal wedging plate includes relatively narrow pressure fingers formed at opposite sides, the distance from the inner edge of the horizontal plate to the free ends of the fingers being slightly greater than the internal spacing between the web and right angular flanges of the jamb. As the horizontal plate is inserted within the jamb and snapped downwardly to engage the intermediate girder, the fingers swing in an arc and are sprung slightly upwardly with reference to the plane of the horizontal plate to increase the wedging force between the jamb and anchor, thereby to provide a stronger connection between the jamb and girder to which the jamb anchor is attached.
A further objective has been to provide when required in combination with the jamb anchor, a vertical jamb extension which seats upon the horizontal wedging plate of the snap-in jamb anchor and extends upwardly along the doorjamb to the roof girder to which it is attached, thereby stabilizing the upper portion of the doorframe with reference to the roof girder.
It will be understood that the header of the doorframe is spaced downwardly below the roof girder and that the jamb extensions span this distance. To provide stability, the lower end of the jamb anchor is attached to the vertical flange of the right angular jamb anchor by screws. The jamb extension may be secured to the header of the doorjamb by angle brackets and the upper ends of the jamb extensions are secured to the roof girder by similar right angular brackets. The door frame is thus firmly stabilized intermediate its length by the jamb anchor and its upper portion is stabilized by the jamb extensions, when used, which extend upwardly from the jambsto the roof girder.
In order to further stabilize the doorframe, base anchors, also in the form of right-angular brackets, are secured to the concrete floor slab. These brackets have upstanding flanges which seat against and are secured to the webs of the jambs at their lower portions which rest upon the concrete slab. A threshold may also be installed upon the concrete slab to act as a spreader with reference to the lower end portions of the jambs.
DRAWINGS In the drawings:
FIG. 1 is a diagrammatic view showing a portion of the wall after erection, with the door opening cut into the wall panel to receive the doorframe.
FIG. 2 is a view generally similar to FIG. 1, showing the sectional metal doorframe being installed within the door opening of the wall.
FIG. 3 is a view similar to FIGS. 1 and 2, showing the doorframe completely installed within its opening.
FIG. 4 is a sectional view taken along the line 44 of FIG. 3, illustrating in a general way the relationship of the snap-in jamb anchors with the intermediate girder and also showing the doorframe and its relationship to the wall panel.
FIG. 5 is a sectional view taken on line 55 of FIG. 3, illustrating the base anchors in relation to the doorframe.
FIG. 6 is an elevation, partially broken away, as viewed from outside the building, showing the several girders in relation to the doorframe and wall panel structure.
FIG. 7 is a fragmentary sectional view along one side of the doorframe, with parts broken away further illustrating the doorframe and girders, together with the jamb anchor and jamb extension.
FIG. 8 is a diagrammatic view showing the first step in the installation of one of the jamb anchors for connecting the intermediate girder to one of the dooriambs.
FIG. 9 is a view similar to FIG. 8, showing the application of force in wedging the snap-in jamb anchor toward its final position.
FIG. 10 is an enlarged sectional view taken along the line l0l0 of FIG. 7 further detailing the snap-in jamb anchor and associated parts.
WALL STRUCTURE AND ERECTION In the example selected to illustrate the principles of the invention, the snap-in jamb anchor 1 (FIG. 7) is installed in a steel building preferably of the one-story type resting upon a concrete slab 2 (FIGS. 1-5). Generally speaking, the building wall indicated at 3 is of a type consisting of an outside panel 4 (FIG. 6) and a possible inside panel 5 (FIG. 10) both may have vertical flutes 6. The two panels are spaced apart from one another by the horizontal bracing members consisting of a roof member 7 and an intermediate bracing member 8. The intermediate bracing member 8 stiffens the wall structure and the upper or roof-bracing member supports the roof structure. Since the roof structure is not essential to an understanding of the invention, it has been omitted from the disclosure. The intermediate horizontal stiffening member and the roof member comprise the main framework of the building wall.
The horizontal stiffening members are often called girts by workers in the field and are termed girders for clarity in this description.
In the present example, walls are in the form of panels which are modular in dimension, for example they may have a width dimension of 3 feet and a height of 12 feet. The flutes or ribs 6 are stamped into the panel on centers which vary according to the standards of various fabricators and the size of the individual flutes may vary to provide the required com pressive strength if the wall is of the load-bearing type. The flutes preferably are located on modular centers to provide convenient installation without trimming, except as noted later.
Preferably, the sides of the flutes slope outwardly from their outer surface toward the plane of the panel from which they are formed, such that upon assembly, the flutes of adjacent panels interfit one another for continuity in the wall surface. The panels may be secured together along the overlapping flutes by riveting, welding, or other conventional means (not shown). In the example disclosed, interior panels may be first installed and if they have flutes, they will be facing inwardly from the panel toward the inside of the building. The outside panels 4 may thereafter be installed with the flutes projecting outwardly. It will be understood that the panels 4 and 5 may be precut to length according to the required height of the building.
In erecting the building, a runner strip (FIG. 7) usually having a width equal to the width of the intermediate girder and roof girder may be secured to the floor slab 2 to act as a spacer for the lower portions of the wall panels. The intermediate horizontal girder 8 and roof girder 7 are installed in the same plane as the outer ends of the runner strip and girders which are secured to comer posts (not shown). The remaining walls of the building (not shown) are installed in the same manner, utilizing runner strips 10 and horizontal roof and intermediate girders 7 and 8, as described above.
After the initial installation of the horizontal girders 7 and 8 and runner strip 10, the inside wall panels 5 may be placed in position against the horizontal members and secured to the horizontal members by riveting or other conventional means (FIGS. l-3). The flutes at the edge portions of the adjoining panels are overlapped and also secured together by conventional fastening devices (not shown). This completes the interior wall section as shown in FIGS. l-3, the remaining walls of the building later being erected in the same manner. It will be understood, that the outside panels are not erected at this time, leaving the horizontal girders or beams 7 and 8 exposed temporarily.
It will be noted that no provision has been made for the door opening or openings at this stage of erection, the opening 13 being cut into the wall panels 4 and 5 after they have been erected, as shown in FIG. 1.
DOORFRAME INSTALLATION The jamb anchor l and associated parts, permit the installation of doorframes of various sizes to be installed within the wall, thereby imparting flexibility to the building structure. By way of example, the doorframe, indicated generally at 11 (FIG. 3), may have a nominal (inside) height of 7 feet. If a single doorframe is to be installed, the width of the frame may vary in nominal (inside) width dimension in stepwise increments of from approximately A4, to 4 feet or more.
Frames for double doors, in which two doors are hung from the opposed jambs and meeting at the center also may have a nominal height of 7 feet, with similar stepwise increments in nominal width to accommodate various door sizes. The installation shown in FIG..3 represents a doorframe 11 for hanging a single door.
It will be understood, at this point, that the height of the doorframe is less than the selected wall height, that is, the distance from the floor slab 2 to the roof girder 7. In order to compensate for this difference and impart flexibility to the building construction, jamb extensions 12, which are channelshaped in cross section, may be utilized in combination with the snap-in jamb anchors l to compensate for the difference between the height of the door and wall.
Generally speaking, in installing the door frame, according to the present example, the inside panel is first marked to outline the door opening 13 in which the doorframe 11 is to be fitted. The opening is made slightly larger (for reasons explained later) that the nominal frame size, which, as noted, represents the inside dimensions of the door frame. In making the doorframe opening, the vertical cutout lines are located in the panel between the vertical ribs or flutes 6, so that the wraparound portions of the doorframe seat against the wall panels. It will be understood, that the intermediate girder 8 is cut out at the opening to provide an interruption for the doorframe.
After the opening 13 (FIG. 1) has been cut, a pair of base anchors 14 (FIG. 7) may be secured to the floor slab 2, in order to provide stops for the lower end of the door-jambs as they are installed. The details of the vase anchors are described later.
The doorframe 11 is of sheet metal construction, comprising a strike jamb 15, a hingejamb I6 and a horizontal header 17 extending across the upper ends of the jambs l5 and 16 (FIG. 3). The adjoining opposite ends of the header and upper ends of the jambs are mitered as at 18 in the usual way.
The door frame is joined together at the mitered upper ends 18 by a hinged connection between the opposite ends of the header and upper ends of the jamb (not shown). In order to hold the door-framing members in flush relationship, the interior of the jambs, at their upper mitered end portions, include alignment clips (not shown) which project into the opposite end portions of the header. These clips may be of the type shown in US. Pat. No. 3,222,833 issued to Harold L. Woodrum on Dec. I4, 1965 or they may be of the type dis-'- closed in the pending application of Harold L. Woodrum, Ser. No. 801,033, filed on Feb. 20, 1969. Other types of connectors also may be utilized but in any event, the connector provides a joint which holds the framing members together in flush relationship at the mitered corners l8.
In the present example, the doorframe members (FIGS. 11 and 12) are generally channel-shaped, the jambs and header being identical in cross section. The framing members are of the double rabbet type, each including a door stop 20 with the rabbets or insets 21 extending outwardly in opposite directions from the central stop 20. Accordingly, the door (not shown) may be hinged for swinging motion in either direction. Each framing member further includes a pair of limbs 22-22 extending at right angles to the outer edges of the rabbets. The free edge of each limb includes an inturned right-angular flange 23 and the inner edge of each flange may include an inturned lip 24 which embraces the wall surfaces on opposite sides.
After the opening 13 has been formed and the base anchors 14 secured to the slab 2, the header 17 is placed in position across the top of the opening 13 then the upper mitered ends of the jambs are pivotally connected to the mitered ends of the header with the jambs canted inwardly (FIG. 2). Thereafter the jambs are pivoted to their vertical position and into engagement with the base anchors 14 to which they are secured by screws, as explained later. With the framing members thus secured in position, the lips 24 reside in contact with the marginal portion of the opening 13.
At this point, holes may be drilled through the marginal portion of the inside panel 5 and through the lips 24 of the jambs and header (FIG. 10). Pop rivets 25 are then installed through the holes and expanded so as to secure the lips 24 of the door framing members to the marginal portions of the inside panels. The pop rivets 25 are commercially available in various styles and include a head and shank which is slipped through the holes of the lip and panel. The end portion of the shank is then expanded with a suitable tool.
It will be ,understood, at this point, that the installation procedure may be reversed if desired. In other words, the door opening 13 may first be formed in the outside wall panel 4 utilizing the same installation procedure, including the installation of the pop rivets. In any event, the doorframe I1 is installed in the opening 13 with the wall panels mounted on one side of the framing members, such that the interior of the doorframe is open for access as the pop rivets 25, the jamb anchors l, jamb extensions 12, and other components are assembled. The inside panels 5 may be omitted in this case, depending upon the use of the building.
After the doorframe has been installed and secured in position, the jamb anchors l are snapped in place within the channel-shaped jambs in position to engage the trimmed ends of the intermediate girder 8 (FIGS. 11 and 12). As described later in detail, each jamb anchor establishes a wedging engagement with the interior of its jamb and includes means for attachment to the end portion of the intermediate girder 8 at the door opening, whereby, the doorframe is reinforced intermediate its length by the jamb anchors 1. In addition, the jamb anchors provide a support for the lower ends of the jamb extensions 12-12 which extend from the jamb anchors upwardly along the jambs to the roof beam or girder 7. The jamb anchors thus impart flexibility in the installation of the doorframe in compensating for the height of the building wall from the slab to the roof girder.
It will be understood that a similar opening 13 is formed in the outside panels 4 (if required) to accommodate the wraparound installation of the door frame (FIG. 6). For this purpose, the outside panels 4, with their vertical flutes 6, may beattached by external screws to the girders 7 and 8 after the jamb anchors, jamb extensions and other internal components are installed. The upper end of the door opening 13 for the outside panel 4 may be slotted as at 26 outwardly on opposite sides to accommodate the opposite end portions of a head trim strip 27 which may be installed above the header 17 at the exterior of the building. I
The head trim strip 27 (not detailed) is generally right angular in cross section and a weather seal strip 28 (FIG. 6) is interposed between the trim strip 27 and header. The trim strip 27 includes an intumed flange (not shown) which interfits the flutes 6 of the outside wall panel 4 above the door frame.
As shown in FIG. 6 self-tapping sheet metal screws 30 are threaded through the outside panel 4, the vertical flange 31 of the trim strip 27 and into the outside limb of the channelshaped jamb extension 12. The remaining portions of the outside panels 4 are secured rigidly to the horizontal girders and runners by screws or other means which may be applied externally thus completing the wall erection.
SNAP-IN .IAMB ANCHOR AND .IAMB EXTENSION As described above, the jamb anchors 1 are installed, in the present example, after the inside panels 5 are mounted with the girders 7 and 8 exposed to the outside for access. As best shown in FIG. 12, each snap-in jamb anchor l is formed of sheet metal and is in the form of a right-angular bracket which is inserted within the vertical jambs l5 and 16 to provide a wedging engagement therewith.
Each jamb anchor comprises a horizontal anchor plate 32 having an upright flange 33 projecting from its inner edge, the anchor being of one-piece sheet metal construction. The anchor plate 32 has a wedging section 34 which fits between the limbs 22-22 of the door jambs and 16. The wedging section 34 interfits and establishes a wedging engagement between the internal surfaces of the rabbets 21 and flanges 23 of the jambs upon being wedged therein as described below.
It will be noted in FIGS. 11 and 12, that the wedging section 34 of plate 32 includes respective slots 35-35 at the juncture of the horizontal anchor plate 32 and wedging section 34. The slots 35-35 delineate relatively narrow pressure fingers 36- 36 at opposite sides of the jamb anchor which establish the wedging engagement between the surface of rabbets 21 and the intumed flanges 2323 of the jamb. In other words, upon being forced in place, the jamb anchor has its inner edge 37 seated upon the inner surface of the rabbets 21-21 while the pressure fingers are in wedging engagement against the inner surfaces of the intumed flanges 2323.
The jamb anchor, in the present example, is installed within each jamb above the intermediate girder of beam 8, as shown in FIGS. 11 and 12. In order to insert the jamb anchor within the jamb, the wedging section 34 is first inserted within the jamb in a downwardly slanted position with the plate also slanted transversely with respect to the vertical jamb to permit entry of the wedging section 34 between the lips 24. Thereafter, the jamb anchor is turned to a position with its horizontal anchor plate 32 disposed in a crosswise direction between the limbs 22-22 of the jamb (FIG. 11). The jamb anchor is now wedged firmly in position by forcing its wedging Section 34 downwardly so as to bring the horizontal anchor plate upon the top of the intermediate girder 8. The installation of each jamb anchor is completed by drilling the matching holes 38 (FIG. 12) through the plate 32 of the jamb anchor and through the end portion of the horizontal girder 8 and installing the self-tapping screws 40 into the holes.
It will be seen in FIGS. 8 and 11, that the dimension D from the inner edge 37 of wedging section 34 to the outer end of the pressure fingers 36 is slightly greater than the'dimension R measured from the internal surface of the rabbets 21 to the internal surface of the flanges 23 of the jamb. Accordingly, as the horizontal anchor plate 32 is forced downwardly, the ends of the pressure fingers 36 swing in a curve A and also move downwardly with reference to the surfaces of flanges 23 against which they are engaged. The curve A is developed as a result of the downward sliding or wedging motion of the inner edge 37 relative to the rabbets 21 combined with the forward sliding motion of edge 39 with reference to the surface of girder 8. This motion is indicated by the arrows B and C in FIG. 1 1. As a result of this combination of forces, the pressure fingers 36 are sprung slightly to an angular position with reference to the plane of anchor plate 32 as indicated by the angle E in FIG. 12. This springing action compensates for any irregularities in the dimensions of the parts and further provides a firm, dependable anchorage between the girder 8 and jamb to which it is anchored.
After the jamb anchors are thus forcibly wedged in position, the jamb extensions 12-12 are installed vertically between the jamb anchors l and the roof beam or girder 7. In installing the jamb extensions 12, each jamb extension is cut to fit between the horizontal anchor plate 32 of jamb anchor 1 and against the lower surface of the roof girder 7.
It will be observed (FIGS. 11 and 12) that the girders 7 and 8 comprise generally flat plates, each having a right-angular flange 41 formed along opposite edges and projecting in reverse directions. The horizontal anchor plate 32 of the jamb anchor 1 seats upon the flat web portion 42 of the intermediate girder, and the holes 38 are drilled for the screws 40 after installation of the jamb anchors, as noted earlier.
Each jamb extension is channel-shaped in cross section comprising a web 43 and a pair of limbs 44-44. After having been cut to length, the lower end of the jamb anchor is seated upon the horizontal plate 32 of the jamb anchor (FIG. 7) and holes 45 are drilled through the web 43 of the jamb extension and through the upstanding flange 33 of the jamb anchor 1. Self-tapping screws 46 are then threaded through the matching holes 45.
A right angular bracket 47 (FIG. 7) is welded to each opposite end portion of the header 17. of the doorframe before the frame is installed. Matching holes are now drilled through the vertical flange of bracket 47 through the web 43 of the jamb extension. Self-tapping screws 48 are then threaded through the matching holes to provide an intermediate connection for the jamb extension and doorframe.
The upper end of each jamb anchor is attached to the roof girder 7 by similar right-angular brackets 49 (FIG. 7). This bracket also includes holes in registry with holes drilled in the roof girder 7 and jamb extension, the parts being secured together by similar self-tapping sheet metal screws 50.
As shown in FIG. 5, the base anchors, previously indicated at 14, are in the form or right-angular brackets each including one horizontal flange 51 seated upon the surface of the runner strip 10 and having longitudinal slots 52-52 for adjustment purposes. Attaching elements 53, for example, studs in the slab 2 pass through holes in strip 10 and the slots 52 and secure the brackets in position. The lower end of each jamb includes a strap or bridge piece 54, which is U-shaped in cross section, having one flange welded to the interior of the jamb and having a second flange secured to the vertical flange 55 of the base anchor.
A threshold 56 (FIG. 5) having its opposite end portions notched to interfit the doorframe stops 20 fits between the base of the jambs and is secured by suitable means (not shown) to the floor slab. This completes the installation of the door frame, jamb anchors and jamb extensions.
. After the jamb anchors, jamb extensions, threshold and other components are thus installed from the open side of the wall, the outside wall panels and trim strip 27 are mounted to the opposite side of the girders or beams and attached thereto by conventional means. Thereafter, the various joints are caulked with a caulking gun in the usual manner for weatherproofing the exterior wall joints. The building wall is now complete and ready for installation of the roof structure.
Having described my invention, 1 claim:
1. In a sheet metal building wall including an intermediate horizontal girder and a horizontal roof girder, a doorframe comprising a pair of vertical doorjambs and a horizontal header extending between the upper ends of the doorjambs and connected thereto, said dooijamb and header being of sheet metal construction having a web, a pair of spaced limbs extending outwardly from opposite sides of the web, said limbs having flanges extending inwardly toward one another at right angles from the free ends of said limbs, a snap-in jamb anchor for each of said doorjambs comprising:
a generally flat anchor plate element;
said anchor plate element having a wedging section fitting transversely between the limbs of the jamb, said wedging section having a rearward edge engaged against the internal surface of the web of the jamb and havingan attachment section projecting outwardly from the wedging section and in contact with the upper surface of said intermediate girder;
a pair of wedging fingers extending outwardly from the wedging section and having outer ends sprung at an angle upwardly from the plane of the wedging section, said wedging fingers being in pressure wedging engagement with the internal surfaces of the right angular flanges which extend inwardly toward one another from the free ends of the limbs, whereby the wedging section is wedged in a selected position within the jamb between the said web and flanges;
means securing the attachment section to the intermediate girder, thereby securing the jamb anchor in wedging engagement with the jamb and securing the jamb to the girder;
a jamb extension having a lower end portion adjacent the said wedging section and extending upwardly above the doorframe toward the roof girder;
means securing the lower end portion of the jamb extension to the said snap-in jamb anchor;
and means securing the upper end portion of the jamb extension to the roof girder, whereby the jamb anchor and jamb extension secure the jamb to the intermediate girder and roof girder.
2. A combined snap-in jamb anchor and jamb extension as set forth in claim 1 in which the anchor means comprises an anchor section extending from the wedging section and engageable with the intermediate girder and in which the wedging section of the jamb anchor includes a flange which projects at right angles from the plane of the wedging section,
.-and attachment means securing the lower end portion of the jamb extension to said flange.
3. A combined snap-in jamb anchor and jamb extension as set forth.in claim 1 in which the anchor means comprises an attachment section extending from the wedging section and engageable with the intermediate girder and in which the wedging section of the jamb anchor includes a flange which projects at right angles from the plane of the wedging section, and in which the lower end of the jamb extension rests upon the wedging section with the end portion of the jamb extension residing against said flange, and attachment means securing the lower end portion of the jamb extension to said flange.
4. A combined snap-in jamb anchor and jamb extension as set forth in claim 1 in which the anchor plate element comprises an anchor section extending from the wedging section and engaging the intermediate girder and in which the wedging section includes a flange extending at right angles from the plane of the wedging section, attachment means securing the lower end portion of the jamb extension to said flange, attachment means securing the jamb extension to the horizontal header below the roof girder, and means securing the upper end portion of the jamb extension to the roof girder above the header.
5. A combined snap-in jamb anchor and jamb extension as set forth in claim 1 in which there is provided a floor beneath the roof and intermediate girders, in which the anchor plate element comprises an anchor section extending from the wedging section and engaging the intennediate girder and in which the wedging section includes a flange extending at right angles from the plane of the wedging section, attachment means securing the lower end portion of the jamb extension to said flange, attachment means securing the jamb extension to the horizontal header below the roof girder, means securing the upper end portion of the jamb extension to the roof girder above the header, and means securing the lower end portion of the jamb to the floor.
6. A combined snap-in jamb anchor and jamb extension as set forth in claim 1 in which there is provided a pair of jamb anchors and a pair of jamb extensions and in which there is provided a floor member, the lower ends of the jambs extending downwardly to the floor members, and attachment means securing the lower end portion of each jamb to the floor member, whereby the upper portion of the doorframe is stabilized by said snap-in jamb anchors and jamb extensions and the lower end portion is stabilized by the attachment means which secure the lower ends of the jambs to the floor member.
7. In a sheet metal building wall including an intermediate horizontal girder, a doorframe comprising a pair of vertical doorjambs and a horizontal header extending between the upper ends of the doorjambs and connected thereto, said doorjamb and header being of sheet metal construction having a web, a pair of spaced limbs extending outwardly from opposite sides of the web, said limbs having flanges extending inwardly toward one another at right angles from the free ends of said limbs, a snap-in jamb anchor for each of said doorjambs comprising:
a generally flat anchor plate element;
said anchor plate element having a wedging section fitting transversely between the limbs of the jamb, said wedging section having a rearward edge engaged against the internal surface of the web of the jamb and having an attachment section projecting outwardly from the wedging section and in contact with the said intermediate girder;
a pair of wedging fingers extending outwardly from the wedging section and having outer ends sprung at an angle upwardly from the plane of said wedging section, said wedging fingers being in pressure wedging engagement with the internal surfaces of the right-angular flanges which extend inwardly towards one another from the free ends of the limbs, whereby the wedging section is wedged at a selected position within the jamb between the said web and flanges;
and means securing the attachment section to the intermediate girder, thereby securing the jamb anchor in wedging engagement with the jamb and securing the jamb to the girder.