US2916781A - Door frame construction - Google Patents

Door frame construction Download PDF

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Publication number
US2916781A
US2916781A US630641A US63064156A US2916781A US 2916781 A US2916781 A US 2916781A US 630641 A US630641 A US 630641A US 63064156 A US63064156 A US 63064156A US 2916781 A US2916781 A US 2916781A
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United States
Prior art keywords
members
door frame
jamb
flanges
frame
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Expired - Lifetime
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US630641A
Inventor
Clyde W Kelly
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Fenestra Inc
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Fenestra Inc
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Priority to US630641A priority Critical patent/US2916781A/en
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Publication of US2916781A publication Critical patent/US2916781A/en
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/96—Corner joints or edge joints for windows, doors, or the like frames or wings
    • E06B3/988—Corner joints or edge joints for windows, doors, or the like frames or wings specially adapted for sheet metal frame members with an open U-shaped cross-section
    • E06B3/9885—Mitre joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/65—Miter joints

Definitions

  • the present invention relates to a corner construction for the metal frame of a door.
  • Figure 1 shows a view of a door frame just prior to assembling.
  • Figure 2 is an enlarged perspective view of one corner of the door frame shown in Figure 1, before the members are assembled.
  • Figure 3 is a view of the members shown in Figure 2 after they are assembled.
  • Figure 4 is a side view of the members shown in Figure 3.
  • Figure 5 is a perspective view of the corner reinforcing member.
  • a knock-down door frame comprising a head 12 and two jamb members '14.
  • a corner reinforcing member 16 is attached to the jamb members.
  • the jamb members 14 have sideportions 20 and 22 with one edge turned inwardly to form the flanges 24 and 26.
  • the sides 20 and 22 are mitre cut as at 28 and 30 with the edges 32 and 34 of the web portions 36 and 38 extending toward the center of the jamb from the lower end of the mitre cut.
  • Tongues 40 and 42 project from the edges 32 and 34.
  • the doorstop 44 is intermediate the webs 36 and 38.
  • the upper edge 46 of the doorstop is offset downwardly as at 48.
  • the head 12 has the side portions 50 and 52 with one edge turned inwardly to form the flanges 54 and 56, having apertures 58 and 60 in the flanges.
  • the side portions are mitre cut at 62 and 64.
  • Web portions 66 and 68 have the edges 70 and 72 extending toward the center of the head from the lower end of the mitre cuts.
  • the edges 70 and 72 extend angularly and outwardly at 74 and 76 and then toward the center of the head.
  • the slots 78 and 80 are located outwardly beyond the edges 70 and 72.
  • the doorstop 82 is intermediate the sides of the head.
  • the head and jambs are fabricated from sections rolled from the same dies so that their contours are identical in shape and size.
  • the corner reinforcement is preferably made from sheet metal and has a flat portion 84 which is bent over on 'three sides to form a top 86, a bottom 88, and an end 90.
  • the top and bottom portions have the corners trimmed off as at 92 and 94 for purposes which will later be described.
  • Apertures 96 and 98 are also in the top and bottom portions respectively.
  • Two welding projections 100 are raised outwardly on the end portion.
  • the reinforcement 16 is electrically welded as at 102, to theinside surfaces of the flanges 24 and 26 of the jamb member with the use of the welding projections.
  • the reinforcement is positioned so that the top 86 comes slightly below the surface 104 of the jamb.
  • the reinforcing members are welded to the jambs during fabrication in the shop and it will be noted that they are positoned on the jambs so that the space "between the flanges 24 and 26 is left open.
  • the opposite or bottom end of the jambs (not shown) is also open between the flanges.
  • the two jambs are nested together by placing the sides 20 or 22 and flanges 24 or 26 of one jamb in the open space between the sides and flanges of the other jamb of the pair of jambs of the frame so that they require minimum space during shipping and storage. This is permitted since the reinforcing members are completely housed within the projection of the space between the flanges 24, 26 and the opposed portions of the web. Thus, the reinforcing members do not in any way obstruct the space between the side walls of the frame members and the flanges thereon. This is accomplished by forming the reinforcing members with a width substantially equal to the width of the sides of the frame members and by forming the flanges on the reinforcing members of a width substantially equal to the flanges on the frame members.
  • the head member 12 is slipped down on the jamb member 14 with the reinforcing members 16 sliding into position along the inner surfaces of the sides 50 and 52 of the head until the mitre cut edges 62 and 64 abut against the mitre cut edges 28 and 30 of the jamb as indicated in Figure 3.
  • the tongues 40 and 42 pass through the slots 78 and with notch 92 and 94 of the members 16 providing clearance for the edges 74 and 76 of the head.
  • the doorstop portion 82 fits into a cutout above the doorstop 44 of the jamb.
  • the hole 58 is positioned so that it registers with hole 96 and hole 60 registers with hole 98.
  • the present invention provides a construction which allows the frame members to be shipped in a knockeddown condition in a compact package thus requiring a minimum of space without damage to the parts as there are no projecting members to become bent or knocked oif and the construction can be easily assembled at the place of installation.
  • the reinforcing members are constructed to provide a sturdy corner with no through cracks at the mitre joint.
  • a door frame comprising head and jamb frame members adapted to be shipped knocked-down and assembled 'on the job, said members being of the same cross-sectional shape and comprising a channel having a web, side walls and opposed flanges extending inwardly of the channel from the edges of said side walls remote from said web and parallel to said web, adjacent ends of said members being mitered to provide inclined abutting end surfaces on said side walls in assembly, a pair of reinforcing elements connecting each end of said head member to the upper end of one of said jamb members, each of said reinforcing elements being in the form of a flat plate abutting the inner surface of the end poition of one of the side walls of one of said frame members, said plate having first and second flanges extending from adjacent edges thereof generally perpendicular to the plane of said plate and to each other, said first flange of said reinforcing element being permanently connected to the inner surface of the end portion of one of the flanges of said one frame member, said plate extending 4

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Corner Units Of Frames Or Wings (AREA)

Description

Dec. 15, 1959 c w KELLY DOOR FRAME CONSTRUCTION Filed Dec. 26, 1956 INVENTOR. CLYDE W. KELLY ATTORNEYS 2,916,781 f DOOR FRAME CONSTRUCTION Clyde W. Kelly, Detroit, Mich., assignor to Fenestra,
Incorporated, Detroit, Mich., a corporation of Michigan The present invention relates to a corner construction for the metal frame of a door.
It is an objectof the present invention to provide a corner construction for a metal door frame thatwill :allow the frame to be shipped in knocked-down condition and easily assembled at the place'of installation.
It is a further object of the present invention to provide a corner reinforcement for a metal door frame that can be attached to one of the members and not interfere with the nesting together of the members so that they will require a minimum amount of space during shipping and storing.
It is a further object of the present invention to provide a corner reinforcement for a metal door frame that will hold the joint firmly together and close the crack at the joint.
Other objects and features of the invention will become apparent as the description proceeds, especially when taken in conjunction with the accompanying drawing, illustrating a preferred embodiment of the invention, wherein:
Figure 1 shows a view of a door frame just prior to assembling.
Figure 2 is an enlarged perspective view of one corner of the door frame shown in Figure 1, before the members are assembled.
Figure 3 is a view of the members shown in Figure 2 after they are assembled.
Figure 4 is a side view of the members shown in Figure 3.
Figure 5 is a perspective view of the corner reinforcing member.
Referring now to the drawings, there is shown generally at a knock-down door frame comprising a head 12 and two jamb members '14. A corner reinforcing member 16 is attached to the jamb members.
The jamb members 14 have sideportions 20 and 22 with one edge turned inwardly to form the flanges 24 and 26. The sides 20 and 22 are mitre cut as at 28 and 30 with the edges 32 and 34 of the web portions 36 and 38 extending toward the center of the jamb from the lower end of the mitre cut. Tongues 40 and 42 project from the edges 32 and 34. The doorstop 44 is intermediate the webs 36 and 38. The upper edge 46 of the doorstop is offset downwardly as at 48.
The head 12 has the side portions 50 and 52 with one edge turned inwardly to form the flanges 54 and 56, having apertures 58 and 60 in the flanges. The side portions are mitre cut at 62 and 64. Web portions 66 and 68 have the edges 70 and 72 extending toward the center of the head from the lower end of the mitre cuts. The edges 70 and 72 extend angularly and outwardly at 74 and 76 and then toward the center of the head. The slots 78 and 80 are located outwardly beyond the edges 70 and 72. The doorstop 82 is intermediate the sides of the head. The head and jambs are fabricated from sections rolled from the same dies so that their contours are identical in shape and size.
The corner reinforcement is preferably made from sheet metal and has a flat portion 84 which is bent over on 'three sides to form a top 86, a bottom 88, and an end 90. The top and bottom portions have the corners trimmed off as at 92 and 94 for purposes which will later be described. Apertures 96 and 98 are also in the top and bottom portions respectively. Two welding projections 100 are raised outwardly on the end portion.
The reinforcement 16 is electrically welded as at 102, to theinside surfaces of the flanges 24 and 26 of the jamb member with the use of the welding projections. The reinforcement is positioned so that the top 86 comes slightly below the surface 104 of the jamb.
It will be noted that by turning the reinforcement member upside down that it can be used at either the right hand or left hand side of the jamb, thus avoiding the necessity of different right hand and left hand reinforcing members.
The reinforcing members are welded to the jambs during fabrication in the shop and it will be noted that they are positoned on the jambs so that the space "between the flanges 24 and 26 is left open. The opposite or bottom end of the jambs (not shown) is also open between the flanges.
The two jambs are nested together by placing the sides 20 or 22 and flanges 24 or 26 of one jamb in the open space between the sides and flanges of the other jamb of the pair of jambs of the frame so that they require minimum space during shipping and storage. This is permitted since the reinforcing members are completely housed within the projection of the space between the flanges 24, 26 and the opposed portions of the web. Thus, the reinforcing members do not in any way obstruct the space between the side walls of the frame members and the flanges thereon. This is accomplished by forming the reinforcing members with a width substantially equal to the width of the sides of the frame members and by forming the flanges on the reinforcing members of a width substantially equal to the flanges on the frame members.
To assemble the frame the head member 12 is slipped down on the jamb member 14 with the reinforcing members 16 sliding into position along the inner surfaces of the sides 50 and 52 of the head until the mitre cut edges 62 and 64 abut against the mitre cut edges 28 and 30 of the jamb as indicated in Figure 3. The tongues 40 and 42 pass through the slots 78 and with notch 92 and 94 of the members 16 providing clearance for the edges 74 and 76 of the head. The doorstop portion 82 fits into a cutout above the doorstop 44 of the jamb. The hole 58 is positioned so that it registers with hole 96 and hole 60 registers with hole 98. The slight clearance between the upper surfaces of the reinforcing members and the edges 104 of the jamb allow self tapping sheet metal screws 108 to draw the head and jamb securely together. The tongues 40 are bent over to complete the assembly. The opposite jamb is assembled to the head in a like manner.
The present invention provides a construction which allows the frame members to be shipped in a knockeddown condition in a compact package thus requiring a minimum of space without damage to the parts as there are no projecting members to become bent or knocked oif and the construction can be easily assembled at the place of installation. The reinforcing members are constructed to provide a sturdy corner with no through cracks at the mitre joint.
It is understood that the above disclosure describes the preferred manner of construction with a door frame, but the reinforcement and its manner of assembly may be used equally as well with metal frames for windows or other similar uses.
The drawing and the foregoing specification constitute a description of the improved door frame construction in such full, clear, concise and exact terms as to enable any person skilled in the art to practice the invention, the
scope of which is indicated by the appended claims.
What I claim as my invention is:
. 1. A door frame comprising head and jamb frame members adapted to be shipped knocked-down and assembled 'on the job, said members being of the same cross-sectional shape and comprising a channel having a web, side walls and opposed flanges extending inwardly of the channel from the edges of said side walls remote from said web and parallel to said web, adjacent ends of said members being mitered to provide inclined abutting end surfaces on said side walls in assembly, a pair of reinforcing elements connecting each end of said head member to the upper end of one of said jamb members, each of said reinforcing elements being in the form of a flat plate abutting the inner surface of the end poition of one of the side walls of one of said frame members, said plate having first and second flanges extending from adjacent edges thereof generally perpendicular to the plane of said plate and to each other, said first flange of said reinforcing element being permanently connected to the inner surface of the end portion of one of the flanges of said one frame member, said plate extending 4 beyond the mitered edge of said one frame member, the second flange of said element being located at the edge of said plate which is positioned beyond said mitered end, the flanges of said reinforcing element having a width not substantially exceeding the width of the flanges of said frame member, said plate having a maximum dimension measured perpendicularly from said first flange not exceeding the width of the side walls of the frame members, said second flange having means thereon providing for detachable connection to the other of said frame members.
2. A construction as defined in claim 1 in which-the plate of said reinforcing element is rectangular and has a third flange thereon parallel to said second flange and at the opposite edge of said plate therefrom, said third flange also having means thereon for detachable connection to a frame member to provide for use of said element at either side of said frame member.
2,052,121 2,652,907 Miller Sept. 22, 1953 2,741,344 Herr Apr. 10, 1956
US630641A 1956-12-26 1956-12-26 Door frame construction Expired - Lifetime US2916781A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034182A (en) * 1957-03-08 1962-05-15 F C Russell Company Metal window construction
US3250041A (en) * 1963-08-27 1966-05-10 Dorplastex A G Door structures
US4228630A (en) * 1978-03-06 1980-10-21 Englert Metals Corp. Window frame construction
EP0629766A1 (en) * 1993-06-14 1994-12-21 Boogaerts N.V. 3-Piece metal interior door frame
LU90370B1 (en) * 1999-03-11 2000-09-11 Intellectual Trade Cy Sa Frame for doors or windows
CN105507743A (en) * 2015-11-25 2016-04-20 长春猛固门业有限公司 Welding-spot-free colored plate frame and mounting method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052121A (en) * 1933-10-26 1936-08-25 Nat Gypsum Co Door frame construction
US2652907A (en) * 1947-04-12 1953-09-22 Firecraft Corp Knockdown reversible hollow metal doorframe
US2741344A (en) * 1953-03-02 1956-04-10 American Welding And Mfg Compa Knock-down metal door frame

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052121A (en) * 1933-10-26 1936-08-25 Nat Gypsum Co Door frame construction
US2652907A (en) * 1947-04-12 1953-09-22 Firecraft Corp Knockdown reversible hollow metal doorframe
US2741344A (en) * 1953-03-02 1956-04-10 American Welding And Mfg Compa Knock-down metal door frame

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034182A (en) * 1957-03-08 1962-05-15 F C Russell Company Metal window construction
US3250041A (en) * 1963-08-27 1966-05-10 Dorplastex A G Door structures
US4228630A (en) * 1978-03-06 1980-10-21 Englert Metals Corp. Window frame construction
EP0629766A1 (en) * 1993-06-14 1994-12-21 Boogaerts N.V. 3-Piece metal interior door frame
LU90370B1 (en) * 1999-03-11 2000-09-11 Intellectual Trade Cy Sa Frame for doors or windows
EP1035293A1 (en) * 1999-03-11 2000-09-13 Intellectual Trade Cy S.A. Door or window frame
CN105507743A (en) * 2015-11-25 2016-04-20 长春猛固门业有限公司 Welding-spot-free colored plate frame and mounting method thereof

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