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GB2121909A - Frame construction - Google Patents

Frame construction Download PDF

Info

Publication number
GB2121909A
GB2121909A GB08217018A GB8217018A GB2121909A GB 2121909 A GB2121909 A GB 2121909A GB 08217018 A GB08217018 A GB 08217018A GB 8217018 A GB8217018 A GB 8217018A GB 2121909 A GB2121909 A GB 2121909A
Authority
GB
United Kingdom
Prior art keywords
tabs
frame
head
slots
tab
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB08217018A
Inventor
Roy Kenneth Streeter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ARKAS EQQUIPMENT Ltd
Original Assignee
ARKAS EQQUIPMENT Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ARKAS EQQUIPMENT Ltd filed Critical ARKAS EQQUIPMENT Ltd
Priority to GB08217018A priority Critical patent/GB2121909A/en
Publication of GB2121909A publication Critical patent/GB2121909A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16B12/00—Jointing of furniture or the like, e.g. hidden from exterior
    • F16B12/06—Non-loosenable joints for metal furniture parts
    • F16B12/08—Non-loosenable joints for metal furniture parts without use of separate connecting elements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Corner Units Of Frames Or Wings (AREA)
  • Door And Window Frames Mounted To Openings (AREA)

Abstract

The invention relates to a frame comprising at least two frame members (1, 2) in mutual engagement at adjoining ends. This engagement is effected by means of at least one tab (5, 6, 13) at an end of one member, which tab is accommodated within and partly protrudes beyond a corresponding slot (7, 8, 14) at an adjoining end of the other member. The protruding portion of the tab has been bent to prevent disengagement. <IMAGE>

Description

SPECIFICATION Frame construction This invention relates to a frame construction.
The invention is particularly, but not exclusively, concerned with metal door frames.
Metal door frames generally comprise two upright members (hereinafter referred to as "jambs") and an upper cross member (hereinafter referred to as a "head"), the two ends of which are respectively joined to the tops of the two jambs.
Engagement between the jambs and the head has previously been effected by means of bolts or by welding. Such engagement is a time-consuming operation requiring particular tools. An object of this invention is to provide a simplified frame construction in which there is no need for the use of bolts or of welding.
According to the present invention, there is provided a frame comprising at least two frame members in mutual engagement at adjoining ends, said engagement being effected by means of at least one tab at an end of one member, which tab is accommodated within and partly protrudes beyond a corresponding slot an an adjoining end of the other member, the protruding portion of the tab having been bent to prevent disengagement.
In a preferred aspect, the invention provides a metal door frame comprising two jambs and a head. At each joint between the top end of a jamb and the adjoining end of the head, one of the members is provided with a plurality of tabs and the other member is provided with a corresponding plurality of slots. The two members are engaged together so that each of the tabs passes through and protrudes beyond the respective slot. The protruding portions of the tabs are then deformed, such as by hammer blows, until they are bent back so that the tabs can no longer be withdrawn from the slots. The tabs are preferably provided with lines of weakness to assist and direct this bending back.
The number of tabs and the corresponding number of slots will vary depending on the profile of the frame. It is possible for the tabs to be either on the jamb or on the head, with the corresponding slots on the other member. It is also possible for a combination of tabs and slots to be provided at the end of one member, with a complementary combination of slots and tabs at the adjoining end of the other member.
The invention is particularly suitable for use in connection with door frames made of sheet metal, such as steel. However, it is also applicable for use with window frames or with any other kind of frames, for example for use in packaging. It is also not restricted to use with metal frames, but instead the members can be made of, for example, plastics materials.
A preferred embodiment of the invention is shown in the accompanying drawing, which illustrates the adjoining portions of a jamb 1 and a head 2 of a steel door frame. Each member is a profiled, longitudinally extending section of sheet metal. Each comprises two lateral channels and one central channel. On the jamb, the bottom of the central channel 3 and the adjoining sides 4 of the two lateral channels terminate in tabs 5 and 6, respectively (one tab 6 being obscured in the drawing). Corresponding slots 7 and 8 respectively are formed in the head adjacent the ends of the bottom of the central channel 9 and the adjoining sides of the lateral channels 10. The bottoms of the lateral channels of both the jamb and the head terminate in an angled portion so that when the two members are joined together a mitre joint 1 1 is formed, enhancing the external appearance of the frame.Additional sheets of metal 12 are welded on the inner side of the bottoms of the lateral channels of the jamb adjacent its end, and these sheets terminate in tabs 13 which are disposed at right angles to the previously mentioned tabs. Corresponding slots 14 for these additional tabs are formed in the head in the sides of the lateral channels distant from the central channel and adjacent the end.
Engagement between the two members is effected by inserting the tabs of the jamb through the corresponding slots in the head. Each of the tabs has a line of weakness, formed by perforations 15 in the sheet metal. The portions of the tabs protruding through the slots are bent at right angles, generally by hammer blows which are assisted by the lines of weakness, so that the tabs are bent back in the direction shown by the arrows onto the upper surfaces of the head. The tabs 13 are shown already bent back. This results in a firm joint between the two members, and prevents disengagement.
It will be appreciated that assembly of a door frame in this way is a simple operation, and requires no special skills or tools.
1. A frame comprising at least two frame members in mutual engagement at adjoining ends, said engagement being effected by means of at least one tab at an end of one member, which tab is accommodated within and partly protrudes beyond a corresponding slot at an adjoining end of the other member, the protruding portion of the tab having been bent to prevent disengagement.
2. A frame as claimed in claim 1, wherein an end of one member has a combination of tabs and slots and the adjoining end of another member has a complementary combination of slots and tabs.
3. A frame as claimed in claim 1 or 2, wherein each tab is provided with a line of weakness to assist and direct the bending of the tab.
4. A frame as claimed in claim 3, wherein the line of weakness is formed by a series of perforations.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Frame construction This invention relates to a frame construction. The invention is particularly, but not exclusively, concerned with metal door frames. Metal door frames generally comprise two upright members (hereinafter referred to as "jambs") and an upper cross member (hereinafter referred to as a "head"), the two ends of which are respectively joined to the tops of the two jambs. Engagement between the jambs and the head has previously been effected by means of bolts or by welding. Such engagement is a time-consuming operation requiring particular tools. An object of this invention is to provide a simplified frame construction in which there is no need for the use of bolts or of welding. According to the present invention, there is provided a frame comprising at least two frame members in mutual engagement at adjoining ends, said engagement being effected by means of at least one tab at an end of one member, which tab is accommodated within and partly protrudes beyond a corresponding slot an an adjoining end of the other member, the protruding portion of the tab having been bent to prevent disengagement. In a preferred aspect, the invention provides a metal door frame comprising two jambs and a head. At each joint between the top end of a jamb and the adjoining end of the head, one of the members is provided with a plurality of tabs and the other member is provided with a corresponding plurality of slots. The two members are engaged together so that each of the tabs passes through and protrudes beyond the respective slot. The protruding portions of the tabs are then deformed, such as by hammer blows, until they are bent back so that the tabs can no longer be withdrawn from the slots. The tabs are preferably provided with lines of weakness to assist and direct this bending back. The number of tabs and the corresponding number of slots will vary depending on the profile of the frame. It is possible for the tabs to be either on the jamb or on the head, with the corresponding slots on the other member. It is also possible for a combination of tabs and slots to be provided at the end of one member, with a complementary combination of slots and tabs at the adjoining end of the other member. The invention is particularly suitable for use in connection with door frames made of sheet metal, such as steel. However, it is also applicable for use with window frames or with any other kind of frames, for example for use in packaging. It is also not restricted to use with metal frames, but instead the members can be made of, for example, plastics materials. A preferred embodiment of the invention is shown in the accompanying drawing, which illustrates the adjoining portions of a jamb 1 and a head 2 of a steel door frame. Each member is a profiled, longitudinally extending section of sheet metal. Each comprises two lateral channels and one central channel. On the jamb, the bottom of the central channel 3 and the adjoining sides 4 of the two lateral channels terminate in tabs 5 and 6, respectively (one tab 6 being obscured in the drawing). Corresponding slots 7 and 8 respectively are formed in the head adjacent the ends of the bottom of the central channel 9 and the adjoining sides of the lateral channels 10. The bottoms of the lateral channels of both the jamb and the head terminate in an angled portion so that when the two members are joined together a mitre joint 1 1 is formed, enhancing the external appearance of the frame.Additional sheets of metal 12 are welded on the inner side of the bottoms of the lateral channels of the jamb adjacent its end, and these sheets terminate in tabs 13 which are disposed at right angles to the previously mentioned tabs. Corresponding slots 14 for these additional tabs are formed in the head in the sides of the lateral channels distant from the central channel and adjacent the end. Engagement between the two members is effected by inserting the tabs of the jamb through the corresponding slots in the head. Each of the tabs has a line of weakness, formed by perforations 15 in the sheet metal. The portions of the tabs protruding through the slots are bent at right angles, generally by hammer blows which are assisted by the lines of weakness, so that the tabs are bent back in the direction shown by the arrows onto the upper surfaces of the head. The tabs 13 are shown already bent back. This results in a firm joint between the two members, and prevents disengagement. It will be appreciated that assembly of a door frame in this way is a simple operation, and requires no special skills or tools. CLAIMS
1. A frame comprising at least two frame members in mutual engagement at adjoining ends, said engagement being effected by means of at least one tab at an end of one member, which tab is accommodated within and partly protrudes beyond a corresponding slot at an adjoining end of the other member, the protruding portion of the tab having been bent to prevent disengagement.
2. A frame as claimed in claim 1, wherein an end of one member has a combination of tabs and slots and the adjoining end of another member has a complementary combination of slots and tabs.
3. A frame as claimed in claim 1 or 2, wherein each tab is provided with a line of weakness to assist and direct the bending of the tab.
4. A frame as claimed in claim 3, wherein the line of weakness is formed by a series of perforations.
5. A frame as claimed in any of claims 1 to 4, in the form of a metal door frame having 2 jams and a head.
6. A frame substantially as hereinbefore described with reference to and as shown in the accompanying drawing.
GB08217018A 1982-06-11 1982-06-11 Frame construction Withdrawn GB2121909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08217018A GB2121909A (en) 1982-06-11 1982-06-11 Frame construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08217018A GB2121909A (en) 1982-06-11 1982-06-11 Frame construction

Publications (1)

Publication Number Publication Date
GB2121909A true GB2121909A (en) 1984-01-04

Family

ID=10530975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08217018A Withdrawn GB2121909A (en) 1982-06-11 1982-06-11 Frame construction

Country Status (1)

Country Link
GB (1) GB2121909A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157794A (en) * 1984-04-17 1985-10-30 Whitehouse Engineering Limited Corner joints for architectural frames
GB2157793A (en) * 1984-04-17 1985-10-30 Whitehouse Engineering Limited Corner joints for architectural frames
WO2011117811A2 (en) * 2010-03-23 2011-09-29 Judson Giovanni Patmore A frame for an opening in a wall
US8567839B2 (en) * 2006-10-02 2013-10-29 Johnson Controls Technology Company Multi-part equipment piece for a vehicle and connecting method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB508590A (en) * 1938-01-21 1939-07-04 Henry Hope & Sons Ltd Improvements relating to metal door frames
GB661327A (en) * 1946-02-14 1951-11-21 Gen Bronze Corp Improvements in or relating to window construction
GB1165515A (en) * 1967-05-31 1969-10-01 Zvi Leivenzon Improved door frames.
GB1189303A (en) * 1966-07-23 1970-04-22 Arnex Products Ltd Improvements relating to Joints Between Elongated Metal Members

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB508590A (en) * 1938-01-21 1939-07-04 Henry Hope & Sons Ltd Improvements relating to metal door frames
GB661327A (en) * 1946-02-14 1951-11-21 Gen Bronze Corp Improvements in or relating to window construction
GB1189303A (en) * 1966-07-23 1970-04-22 Arnex Products Ltd Improvements relating to Joints Between Elongated Metal Members
GB1165515A (en) * 1967-05-31 1969-10-01 Zvi Leivenzon Improved door frames.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157794A (en) * 1984-04-17 1985-10-30 Whitehouse Engineering Limited Corner joints for architectural frames
GB2157793A (en) * 1984-04-17 1985-10-30 Whitehouse Engineering Limited Corner joints for architectural frames
US8567839B2 (en) * 2006-10-02 2013-10-29 Johnson Controls Technology Company Multi-part equipment piece for a vehicle and connecting method
WO2011117811A2 (en) * 2010-03-23 2011-09-29 Judson Giovanni Patmore A frame for an opening in a wall
WO2011117811A3 (en) * 2010-03-23 2011-12-15 Judson Giovanni Patmore A frame for an opening in a wall

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)