US3400492A

US3400492A - Door frame assembly

Info

Publication number: US3400492A
Application number: US562986A
Authority: US
Inventors: Bell J Harold; Everett E Daniels
Original assignee: WEATHER PROOF CO
Current assignee: WEATHER PROOF CO
Priority date: 1965-01-18
Filing date: 1966-05-09
Publication date: 1968-09-10
Anticipated expiration: 1985-09-10

Description

Sept. 10, 1968 H, BELL ETAL 3,400,492

DOOR FRAME ASSEMBLY Original Filed Jan. 18, 1965 5 Sheets-Sheet 1 F251 F157. J

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Sept. 10, 1968 BELL ET AL 3,400,492

DOOR FRAME ASSEMBLY Original Filed Jan. 18, 1965 5 Sheets-Shet a 57 J mad fi fim Everetfiibazgigls BY Q% ATTORNEYS Sept. 10, 1968 L ET AL 3,400,492

DOOR FRAME ASSEMBLY Original Filed'Jan. 18, 1965 5 heets-Sheet 5 I N VEN TORS J ffargld .5631} fyerefifi'flazgigla 8% M ATTORNEYS Sept. 10, 1968 J E ET AL 3,400,492

DOOR FRAME ASSEMBLY Original Filed Jam 18, 1965 5 Sheets-Sheet 4 V i INVENTORS V. :Zfiargld Egg? Eweretfiflazgzigs Z W ATTORNEYS Sept. 10, 1968 H, BELL ET AL DOOR FRAME ASSEMBLY 5 Sheets-Sheet 5 Original Filed Jan. 18, 1965 I N VEN TOR-5 arzgz'qzs gld .50 reZZZD Emir] I 33/ J 1%! Eye BWWM 4 ATTORNEYS United States Patent 3,400,492 DOOR FRAME ASSEMBLY J. Harold Bell and Everett E. Daniels, Litchfield, Ill., assignors to Weather-Proof Company, Litchfield, Ill., a corporation of Ohio Original application Jan. 18, 1965, Ser. No. 426,189, now Patent No. 3,310,920, dated Mar. 28, 1967. Divided and this application May 9, 1966, Ser. No. 562,986

4 Claims. (Cl. 49-504) ABSTRACT OF THE' DISCLOSURE Pre-hung door frame assembly which may be shipped to the site as a unit, in which inside and outside frames are provided for the entranceway of the building and are insulated from each other. The door is hung to the inside frame and the outside frame forms a stop for the door. The inside and outside frames have interengagement with each other at their adjacent ends and are spaced from the 'walls of the entranceway by parallel legs, to provide an air space between the legs and to enhance the leveling of the frames when attached to the entranceway of a building. The inside and outside frames have parallel hook-like ribs extending along the inside and outside of the respective frames parallel to the walls of the entranceway of the building and forming an attaching means for trim snapped thereto and covering the means for securing the inside and outside frames to the entranceway of the building. The door stop is fonrned integrally with the outside frame and reenforced by a right angle door stop snapped to the outside of the door stop and to the outside frame.

This application is a division of our parent application Ser. N0. 426,189, filed Jan. 18, 1965 now Patent No. 3,310,920.

A principal object of the present invention is to provide a new and improved form of pre-hung door, so constructed and arranged that it may be shipped to a site assembled in its frame in a pre-hung condition, in which the frame and door may readily be installed in an opening in a simple and expeditious manner.

Another object of the invention is to provide an improved form of door frame assembly and pre-hung door therefor arranged with a view toward utmost simplicity in assembly to a door opening and efficiency in construction and operation.

A still further object of the invention is to provide an improved form of pre-hung entrance frame which may readily be assembled and sealed to an entranceway of a building.

Still another object of the invention is to provide an improved form of pre-hung door frame shipped to the site as a unit, with a thermal barrier between the inside and outside sections of the frame, to prevent the conduction of heat or cold through the frame sections, into the buildmg.

A still further object of the invention is to provide a sectional door frame with a thermal barrier between the sections of the frame and so arranged as to be readily assembled to an opening in a building, in which the'sections of the frame are so arranged as to have the trim and door stops snapped thereto.

A still further important object of the invention is to provide a threshold for the entrance to a building, including a metallic exterior threshold extending across the entrance of the building along the floor thereof and having an adjustable inner end portion extending within the building, forming a support and adjusting means for a resilient thermal barrier, covering the part of the inside 3,400,492 Patented Sept. 10, 1968 threshold extending under the door and adjustable to seal the bottom of the door when closed.

Still another object of the invention is to provide a prehung door frame, door and threshold in which the frame, door panel and threshold are so designed as to hide all adjustment and mounting screws after installation of the frame, threshold and panel in an opening in a building.

These and other objects of the invention will appear from time to time as the following specification proceeds and with reference to the accompanying drawings wherein:

FIGURE 1 is a front end view of a pre-hung door frame and door panel installed in an opening of a building looking at the frame and door panel from the outside of the building;

FIGURE 2 is a sectional view taken substantially along line IIII of FIGURE 1 and showing the lower portion of the door panel, frame and threshold in transverse section;

FIGURE 2a is a fragmentary detail plan view 'with certain parts broken away in order to show the adjustment means for the cover for the inside thereshold to conform the cover to the door;

FIGURE 3 is a transverse sectional view taken substantially along line III-III of FIGURE 1, and forming in effect a vertical continuation of FIGURE 2 and showing the top half of the door panel and frame in transverse section;

FIGURE 4 is a partial fragmentary horizontal sectional view taken through the latch stile end of the door panel and frame substantially along line IVIV of FIG- URE 1;

FIGURE 5 is a partial fragmentary horizontal sectional view taken through the hinge stile end of the panel and frame with the frame structure for the door opening broken away, and showing certain details of the hinge and frame structure;

FIGURE 6 is a plan view of the panel frame, and core with the panels removed;

FIGURE 7 is a fragmentary sectional view taken substantially along line VIIVII of FIGURE 6 and illustrated a connection of a core member to the panel frame;

FIGURE 8 is a plan view of one of the horizontal core members;

FIGURE 9 is a transverse sectional view taken substantially along line IXIX of FIGURE 8;

FIGURE 10 is a plan view of one of the vertical core members; and

FIGURE 11 is a transverse sectional view taken substantially along line XIXI of FIGURE 10.

In the embodiment of the invention illustrated in the drawings, we have generally shown in FIGURE 1 a door frame 10 mounted in a door opening in a building and having a panel 11 hinged thereto, to provide access to the interior of the building.

The door frame 10, as shown in FIGURES 2, 2a, 4 and 5, is made in exterior and interior parts with a thermal barrier therebetween and includes generally an exterior threshold 12 leading generally to the door panel 11 and an inside threshold 13 forming a continuation of the exterior threshold and having engagement at its inner end with a fioor 15 of the room. The door frame 10 also includes an exterior jamb 16 and an interior hinge jamb 17 forming a rear or inner continuation thereof and extending vertically along one side of the opening of the building (FIGURE 5). A similar exterior jamb 19 extends vertically along the opposite side of the building and has an interior latch jamb 20 forming an inner continuation thereof.

The

exterior jambs

16 and 19 are connected together at their upper ends by an exterior head 21. The interior jambs 17 and 20 are connected together at their upper ends by an interior head 23. The

exterior jambs

16 and 19 are of a similar construction and have exterior trim 24 snapped thereto, as will hereinafter more clearly appear as this specification proceeds. In a similar manner the exterior head 21 has trim 25 snapped thereto and extending across the top of the door opening. The interior jambs 17 and 20 also have trim 26 snapped thereto, while the interior head 23 has trim 27 snapped thereto. The adjacent ends of the vertical trim and the horizontal trim are chamfered at angles of 45, to join the jamb and head trim and effect a pleasing door frame appearance.

The door panel 11 includes generally a hinge stile 29 and an opposite parallel latch stile 30. The

stiles

29 and 30 are connected together at their upper and lower ends by top and bottom rails 31 and 32 respectively. The adjacent ends of the stiles and rails are shown as being beveled at angles of 45 to provide an abutting rigid rectangular frame. Screws 33, which may be wood screws threaded in inwardly opening bosses 35 (FIGURES 2 and 3) extending along the insides of the rails 31 and 32, are provided to hold the rails and stiles in assembled relation with respect to each other. The

stiles

29 and 30 and rails 31 and 32 extend about an interlocking core 36, which may be made from metal, such as aluminum, and which engages said stiles and rails, as will hereinafter more clearly appear as this specification proceeds. The core 36 forms a core for

plastic panels

37, 37 extending along opposite sides thereof and along the outer sides of the stiles and rails.

The panels 37 may be made from any suitable plastic material, and preferably may be made from a translucent plastic material, one such suitable translucent plastic being known to the trade as fiberglass.

The

stiles

29 and 30 and the rails 31 and 32 are of the same cross section so the detailed structure of the hinge stile 29 only, need be described herein, and like reference numerals will be applied to like parts of the stiles and rails. As shown in FIGURE 7, the stile 29 is generally channel-like in cross section and has a vertically extending web 39 facing the hinge jamb. The web 39 has opposite

angular end portions

40, 40 extending angularly outwardly of the web and terminating into generally

parallel leg portions

41, 41 extending perpendicularly to the web. The leg portions 41 extend forwardly and rearwardly of the

inclined end portions

40, 40 and form interlocking connections for the plastic panels 37.

The inwardly extending leg portion 41 has an outwardly opening slot 43 extending therealong for the length thereof. The slot 43 diverges from its outer side, to form a generally dovetail shaped slot to be partially embedded in an associated panel 37 when the panel is in a liquid or semi-liquid lfOIIIl and provide a mechanical interlock with said panel upon hardening of the panel. The portion of the leg 41 extending inwardly of the slot 43 toward the center of the panel, in effect forms a generally dovetail tongue 44 terminating into an inwardly extending rib 45 defining the inner end of the leg 41 and extending for the length thereof. The rib 45 is adapted to extend along the wall of a notch 46 of a horizontal core section 47, it being understood from FIGURE 8 that the core sections 47 have notches opening at the corners of opposite sides thereof and at opposite ends thereof, to form a guide means for said core sections, when assembled to the

stiles

29 and 30 and the rails 31 and 32.

The portions of the legs 41 extending toward the outer side of the panel have inwardly facing hook-like ribs 49 on the insides thereof, facing the inclined portions 40 of the channel and extending for the length of the channel to have interengagement with outwardly facing slots 51 formed in parallel retaining legs 53, extending inwardly of a cover 55 for the stile 29.

As shown in FIGURE 4 the cover 55 extends across the edge of the stile and has inwandly curved end lips 56 abutting the ends of the panels 37. The cover 55 may thus 4 be snapped to the stile 29. Similar covers 55 are provided for the top rail 31, the stile 30 and the bottom rail 32.

The latch stile 30 may be drilled in a suitable manner to form a mounting for a latch (not shown) and to have a latch bolt (not shown) project therethrough. In a similar manner the latch stile cover 55 may have a suitable opening therein to allow the latch bolt (not shown) to project therethrough into engagement with a keeper (not shown) in the interior jamb 20.

The hinge stile 29 may be suitably drilled to form a mounting for hinges 60, 60. The hinges 60, 60 may be of a conventional form and are no part of the present invention so need not herein be shown or described further. The cover 55 for the hinge stile may be slotted (not shown) to receive the hinges and to accommodate the cover to be snapped to the stile.

The interlocking core 36 may be of any desired design, which will fill the space within the stiles and rails and rigidify the

panels

37, 37 and present a pleasing appearance through the translucent panels. The core 37, as shown in FIGURES 6 and 8 to 11 inclusive comprises a plurality of parallel horizontal core sections or strips 47 and a plurality of parallel interlockingly engaged vertical core section or strips 48. The

core sections

47 and 48 may be made from aluminum extrusions. The core section 47 is shown in FIGURES 8 and 9 as having a thickened central portion 61 forming a rigidifying rib extending to opposite sides of the section for the length thereof. The core section 47 also has opposite outwardly flared end portions 63, generally dovetail in form to be pressed into engagement with the semi-liquid panels 37 and to interlock with said panels upon hardening thereof. The core sections 47 also have a plurality of parallel slots 65 extending therein from the side thereof and of widths slightly larger than the widths of thickened portions 67 of the vertical core strips 48, to accommodate the vertical core strips to be moved into interlocking engagement with the horizontal core sections along slots 66 of the vertical core sections, and extending along opposite sides of the thickened portions 61 of the horizontal core sections.

The vertical core sections 48 like the horizontal core sections 47 have opposite outwardly flared end portions 68 of a generally dovetail formation, to be pressed into the semi-liquid panels and form an interlocking connection therewith, upon hardening of the panels. The vertical core sections 48 also have corner notches 69 atthe corners of opposite ends thereof, adapted to have engagement with ribs 45 extending along the insides of the legs of the rails of the channels.

Upon assembly of the rails, stiles and core, the panel frame may be lowered onto a semi-liquid plastic panel and pressed thereinto by the weight of the panel frame. The plastic panel may then be allowed to harden to provide an interlocking connection between the panel frame and core, and the plastic panel, as shown in FIGURES 2, 3, 4 and 5. The panel frame with one plastic panel secured thereto may then be raised and turned upside down and lowered onto another semi-liquid plastic panel 37 in accurate alignment therewith. The second plastic panel may then be allowed to harden, to interlock the panel with the panel frame and core. The excess plastic may then be trimmed to the door frame.

The covers 55, properly mitered to give a pleasing appearance at the corners and notched to receive the hinges and a latch, are then snapped into place around the perimeter of the panel. The door panel is then ready for assembly to the door frame 10 in a conventional manner, it being understood that the door panel may be hung to the inner door frame, and the frame and threshold, with the door panel assembled thereto, may be shipped for installation in the form of a pre-hung assembly.

The threshold is shown in FIGURE 2 as comprising the outside threshold 12 and the inside threshold 13 forming an inside continuation thereof and adapted for use on varying heights of inside and outside floors, to make it possible to use the threshold for solid types of doors which cannot be planed.

The outside threshold 12 is in the form of a floor or tread plate 70 mounted on a plurality of spaced supporting

legs

71, 72 and 73. In the form of the invention shown, the

legs

71, 72 and 73 place the floor plate 70 at a relatively flat' upwardly inclined angle toward the door to enable water todr ain away from the door. The outside threshold 12.is mounted at its forward end on a plate 75 having spaced outwardly facing gibbed retainer guides 76 extending along opposite sides thereof to receive inwardly extending ribs 77 and 78 of the

respective legs

71 and 72. The plate 75 may be screwed to the floor and the

legs

71 and 72 may be snapped to engage the ribs 77 and 78 with the outwardly gibbed retainer guides 76, 76.

The rear leg 73 has a rearwardly opening semi-cylindrical socket 80 extending therealong and engaged by the semi-cylindrical end 81 of a plate 82 of the inside threshold 13. As shown in FIGURE 2, the plate 82 is of a modified Z shape in form and extends from the outside threshold 12 tothe floor 15 and has an adjustable tread end 83 resting on. the floor. The tread end 83 extends from the floor over the inner end of the plate 82 and with said plate forms a groove 85, to receive the end of a pliable plastic cover 84, which forms a thermal barrier and Weatherstrip between the outside and inside threshold and the door panel. The plate 82 also has an upwardly projecting rib 86 extending upwardly therefrom intermediate its ends and extending for the length thereof transversely of the door frame and terminating in a rearwardly or inwardly extending rounded head 87 engageable within a socket 88 formed in an adjustable inside cover support 89. The inside cover or thermal barrier support 89 is adjustably mounted on the plate or mounting member 82 and has aledge 90 projecting therefrom, toward the floor 15 and extending for the length of the threshold.

Spaced adjustment screws 91 are threaded in the ledge 90 and engage the plate 82 to adjust the cover support 89 and cover supported thereon. Spaced locking screws 92 loosely pass through the ledge 90 and are threaded in the plate 82 to lock the cover support 89 and cover and thermal barrier 84 in place.

The cover support 89 has two parallel spaced upwardly opening gibbed grooves extending therealong. The gibbed grooves form retaining mountings for the hook-like ends of legs 94 and 95 depending from the cover or thermal barrier 84. The adjustable cover support 89 may thus retain the cover and thermal barrier 84 in adjusted position with respect to the inside threshold 13, and may adjust said cover and thermal barrier to seal the bottom of the door panel 11.

The outside threshold 12, the inside threshold 13 and the adjustable cover support 89 may be made from aluminum extrusions while the cover and thermal barrier 84 may be made from a vinyl material having sufficient flexibility to readily conform to the angle of the outside threshold 12 after adjustment of the support 89 in accordance with various levels of the floor 15 with respect to the plate 70- of the outside threshold 12, to enable the door to readily fit in its frame without necessitating alteration or planing of the 'door panel. The threshold is also so formed, that all adjustment and mounting screws are hidden after installation and adjustment of the cover 84.

The entrance frame may be used with any form of door and includes an exterior frame formed from the

exterior jambs

16 and 19 and the head 21 connecting the jambs together, and an interior frame formed from the interior jambs 17 and 20 and interior head 23. The interior and exterior jambs and heads may be made from aluminum extrusions and may have a thermal barrier therebetween.

The

exterior jambs

16 and 19 are of the same construction, so the same part numbers will be applied to each jamb and one only need herein be shown and described in detail. The exterior jamb 19, as shown in FIG- URE 4, includes a plate section 96 having a front leg 97 extending inwardly therefrom toward the wooden or masonry framework of the door opening, and shown as being spaced therefrom, An intermediate leg 98 extends inwardly from the plate 96 into engagement with a shim 98 used as squaring the door in the opening and spaced between the metal jamb and framework of the door opening. The undersurface of the plate 96 has a rearwardly or inwardly facing gibbed guide 99 extending vertically therealong to receive the forward or outer end of a plate section 100 of the interior jamb 20. As shown in FIG- URE 4, a strip of thermal barrier tape 101 is interposed between the inner or underside of the plate 96 and the adjacent side of the plate 100. The interior and exterior jambs may then be riveted or otherwise secured together. Screws 102 are shown as extending through the

plates

96 and 100 to secure the jambs to the framework of the building. The 'plate 96 extends inwardlyalong the plate 100 to a shoulder 103 formed therein, and has a right angled leg 104 extending toward the door panel 11, but spaced outwardly therefrom and parallel thereto, when the door panel is in its closed position.

The leg 104 has a gibbed slot 105 extending vertically therealong and opening toward the door panel and forming a mounting for a thermal barrier, which may be a wool pile or vinyl barrier. The leg 104, therefore, in effect forms a door stop and support for insulating material extending between the door frame and door. The leg 104 has a hook-like rib 107 extending along its extreme inner end and facing the front of the frame and adapted to be engaged by a hook-like recess formed by an inwardly extending inclined rib 109 extending along the inner side of a door stop 110. The door stop 110 is generally in the form of an angle and has a right angled forward leg adapted to be snapped into engagement with a groove 111 in the plate 96 and extending vertically therealong. The door stop 110 may thus readily be snapped in position, after the door frame has been installed into the framework of the door opening, and hides the attaching screws and also adds support to the weatherstripped door stop 104.

The leg 97 has parallel spaced ribs 112 extending therealong and facing toward the front of the building. The ribs have inclined hook-like inner faces adapted to be engaged by hook-

like end portions

113, 113 of

legs

115, 115 of the exterior trim 24, to accommodate the exterior trim 24 to be pounded or snapped into engagement with the jamb 19, upon assembly of the jamb to the framework of the door.

The front face of the exterior trim 10 may be of various desired forms, to provide a utilitarian trim having a pleasing appearance and to conceal the framework of the door opening, or to span the opening between the inner and outer courses of a masonry Wall. The front frame of the trim 24 has an inwardly extending right angled leg 116 sealed to the opening of the building, as by a suitable caulking compound, indicated generally by reference character 117.

The interior jamb 20 has an inner leg 119 extending inwardly therefrom to the framework of the door opening and forming a spacer for the plate 100, and to support the door frame rigidly in place when screwed down against the shims 98 The jamb 20 also has a right angled leg portion 120 extending along the inner side of the wooden framework of the building and secured thereto by screws 121. The leg portion 120 has retaining recesses 122 extending therealong and diverging as they extend toward the leg portion 120, and forming snap on retainers accommodating the interior trim 27 to be snapped or pounded into engagement therewith in a manner similar to which the exterior trim 24 is snapped into engagement with the exterior jamb 19.

The exterior head 21 is similar in cross section to the exterior jamb 19 and has an intermediate upwardly extending spacer leg 125 engaging the underside of the framework of the door opening and an inwardly facing retainer gib 126 adapted to be engaged by the forward end portion 127 of a plate 129 of the interior head 23. A strip of thermal barrier tape 130 may be interposed between the underside of the plate 127 of the interior head and a plate 129 of the exterior head.

The exterior head 21 has a downwardly extending leg 133 having a hooked end portion adapted to engage within an inclined hook-like rib 135 extending along the inside of a horizontally extending door stop 136. The door stop 136 has a front leg 137 snapped into a groove 138 extending along the exterior head 121 and opening toward the ground. The exterior head 21 also has a front vertically extending leg 139 extending inwardly toward the framework of the door opening and having spaced interlocking hook-

like ribs

140, 140 extending therealong and adapted to have interlocking engagement with hook-like ends 141 of parallel legs 142 of the exterior head trim 25. The exterior head trim 25 may be like the exterior jamb trim 24 and has an inwardly extending leg 143 caulked to the door opening as by caulking compound 144 after the frame has been secured in place in the door opening.

The interior head 23 is also like the interior jamb 20 and has a vertically extending leg 128 engageable with a shim 125* and an inner vertically extending leg portion 145 extending along the inside of the framework for the building. The interior head trim 27 is snapped to facing diverging retaining grooves 147 extending along the inside of the leg portion 145 in the same manner the interior trim is pounded or snapped into engagement with the interior jambs.

In assembling the door frame, the interior and exterior frame sections may each be pro-assembled. Insulating or heat barrier tape 101 may be placed along the outer surface of the plate 100 along the outer end portion thereof. Insulating or heat barrier tape 130 may also be placed along the outer surface of the plate 127. The interior and exterior frame sections may then be drawn together, with the plate 100 engageable within the gibbed guide 99 and the heat barrier tape between the

plates

100 and 96, and with the plate 127 engageable within the gibbed guide 126 and the heat barrier tape 130 between the plates 127 and 129.

When the interior and exterior frame sections have been drawn together they may be retained in connected relation with respect thereto, as by machine screws or rivets in alignment with the

screws

102 and 131. The assembled interior and exterior frame sections may then be screwed or otherwise secured to opposite sides of the threshold, to form a unitary door frame. The door panel may then be assembled to the frame and the frame and panel may be suitably packed and shipped to a building site, with the trim separate from the frame, to be snapped onto the frame after the frame is leveled and securely fastened to a door opening in a building.

The assembled frame with the threshold either with or without the door panel, may then be placed in a door opening of a building. Shims 98 of the required thickness may then be placed under the

legs

98 and 119. Similar shims 125 may also be placed between the

legs

125 and 128 and the framework of the doorway to level and space the head in the proper relation with respect to the framework of the doorway. When the framework is leveled with respect to the doorway, screws 102 are driven through holes in the preassembled inner and outer jambs and through the shims 98 into the rough opening of the building. Other screws 121 are driven through holes in the leg portions 120 of the interior jambs into the rough opening of the building. Similar screws 131 are driven through holes in the connected interior and exterior head between the

legs

125 and 128 into the shim 125 and the rough opening in the building. Screws 146 are also driven through the leg portion 145 into the rough opening of the building.

The inside threshold 13 and cover support 89 may then be adjusted to the door and floor to accommodate free swinging movement of the door and to retain air from passing beneath the door, by removing the inner edge of the vinyl cover and thermal barrier 84 from the groove 85. The locking screws 92 and adjustment screws 91 are then exposed. The locking screws 92 may then be loosened and the set or adjustment screws 91 may be turned until the cover support or thermal barrier 84 is in proper relation with respect to the door and floor, to seal the door when closed. Upon adjustment of the cover support 89 and cover and thermal barrier 84, the locking screws 92 may then be tightened to lock the cover support 89 and cover 84 in place. The edge of the vinyl cover may then be replaced in the groove extending along the inside threshold 13.

Upon leveling and fastening the door frame and threshold to the door opening in the building, the inside of the door opening may be plastered and painted. The jamb stops and the head stop 136 may then be snapped or pounded into position to conceal the

screws

102 and 131. The

exterior trim

24 and 25 may then be pounded or snapped into position and caulked to the opening of the building. The interior trim 26 and 27 may then be snapped or pounded into place. The interior and exterior trim and the door stops, as Well as the vinyl cover for the threshold, therefore, cover all fastening members, and are placed in position by a simple snapping action.

It may further be seen that the frame for the door is particularly adapted for the fabricated door of the present invention, but may also be used for any conventional form of wooden door, and is in two sections with a thermal barrier between the two sections and a thermal barrier between the sections and the door. The sections may thus readily be assembled to the door opening of the building by the use of screws and the screws and fastening means may all be covered by the snap on trim and door stops.

It should further be understood that the threshold may be separate from the door frame and used for various door openings and that the adjustability of the sections enables the interior threshold to readily be adapted for use on different heights of floors and makes it possible to install a pre-assembled door without planing or otherwise altering the door to conform to the threshold, and to provide a weather-tight joint between the door panel and threshold.

While we have herein shown and described one form in which our invention may be embodied, it may readily be understood that various variations and modifications in the invention may be attained without departing from the spirit and scope of the novel concepts thereof.

We claim as our invention:

1. In a door frame,

an inside frame and a separate outside frame detachably connected thereto,

said inside frame comprising,

a latch jam'b, a parallel hinge jamb, and a head connecting said jambs together,

said inside jambs and head each having a plate portion extending parallel to an associated wall of the entranceway of a build- 111g,

a leg spacing said plate portion from the associated wall of the entranceway of the building, and

an inner leg extending along the inside wall of the building and adapted to be attached thereto,

said outside frame comprising,

a pair of parallel jambs and a head connecting said jambs together,

said outside jambs and head each having a plate portion extending parallel to an associated wall of an entranceway of a builda leg spacing said plate portion from the Wall of the entranceway, and a leg portion extending from the inner end of said plate towards the center of the frame and forming a stop for a door, said plates of each of said jambs and head of said outside frame, each having an inwardly facing gibbed guide extending therealong parallel to the ends of said plates and forming retainers for said plates of said inside jambs and head, and said inside jambs and head having a shouldered portion adapted to be engaged by the inner ends of said leg portions of said inside frame in overlapping relation and cooperating with the gib'bed guides to maintain the inside and outside frames in squared relation with respect to each other, and securing means between said gibbed guides and shouldered portions extending through both of said plates, for securing said frames to the wall of the building in assembled relation with respect to each other. 2. The structure of claim 1, wherein said leg portions forming the stop for a door each have an outwardly facing hook-like rib extending therealong, wherein said plates of the jambs and head of the outside frame each have a groove extending therealong parallel to said door stops, and wherein a separate right angled door stop is hooked to each hook-like rib extending along said leg portions and engaged with each groove extending along said plates, to reenforce said leg portions and cover said securing means. 3. A door frame comprising, an inside frame and an outside frame, said inside frame comprising a latch jamb, a parallel hinge jamb, a head connecting said jambs together, said inside jambs and heads each having a plate portion extending parallel to the wall of the entranceway of a building and a leg portion extending perpendicular thereto parallel to the inside wall of a building and affording a means for securing said head and jambs to extend along the entranceway of a building, an outside frame comprising a pair of parallel jambs and a head connecting said jambs together, said outside head and jambs each having a leg portion extending perpendicular thereto parallel to the outside wall of a building and plate portions extending parallel to the wall of the entranceway of a building engaging the plate portions on the inside jambs and head in overlapping relation,

means extending through said overlapped plate portions and securing said inside and outside jambs and heads to the entranceway of a building,

parallel hook-like ribs extending along the perpendicular leg portions of said inside jambs and head and facing the inside of the building,

parallel hook-like ribs extending along the perpendicular leg portions of said outside jambs and head and facing toward the outside of the building,

said hook-like ribs affording a means for snapping interior and exterior trim thereto, and

door stops snapped to said exterior jambs and head.

4. A door frame comprising,

an inside frame and an outside frame,

said inside frame comprising a latch jamb,

a parallel hinge jam b,

a head connecting said jambs together,

said inside jambs and heads each having a leg portion extending perpendicular thereto parallel to the in- 1 side wall of a building and affording a means for securing said head and jambs to extend along the entranceway of a building,

said inside head and jambs having plates extending outwardly therefrom parallel to the walls of the entranceway of a building,

an outside frame comprising apair of parallel jambs and a head connecting said jambs together,

said outside head and jambs having plate portions adapted to lap said outwardly extending plates of said inside jambs and a leg portion extending perpendicular thereto parallel to the outside Wall surface of a building,

a thermal barrier between said plates and plate portions, and

means extending through said lapped plate portions and plates for securing said exterior and interior frames to the wall of a building,

parallel hook-like ribs extending along the perpendicular leg portions of said inside jambs and head and facing the interior of the building,

parallel hook-like ribs extending along the perpendicular leg portions of said outside jambs and head and facing the outside of the building, and

interior and exterior trim formed to be snapped to said hook-like ribs.

References Cited UNITED STATES PATENTS 2,913,777 11/1959 Viets 49-505 2,990,040 6/1961 Stevenson 52212 3,044,130 7/1962 Mehafiy 49505 XR 3,083,798 4/1963 Sklar 49-380 XR FOREIGN PATENTS 79,265 10/ 1962 France.

KENNETH DOWNEY, Primary Examiner.