US2042721A - Metal panel construction - Google Patents

Metal panel construction Download PDF

Info

Publication number
US2042721A
US2042721A US20601A US2060135A US2042721A US 2042721 A US2042721 A US 2042721A US 20601 A US20601 A US 20601A US 2060135 A US2060135 A US 2060135A US 2042721 A US2042721 A US 2042721A
Authority
US
United States
Prior art keywords
flanges
plates
panel
structural member
edge portions
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.)
Expired - Lifetime
Application number
US20601A
Inventor
Loewy Morris
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US20601A priority Critical patent/US2042721A/en
Application granted granted Critical
Publication of US2042721A publication Critical patent/US2042721A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E04C2002/3444—Corrugated sheets
    • E04C2002/3466—Corrugated sheets with sinusoidal corrugations
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E04C2002/3472—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets with multiple layers of profiled spacer sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • Y10T428/24711—Plural corrugated components
    • Y10T428/24727—Plural corrugated components with planar component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31703—Next to cellulosic

Definitions

  • My invention relates to metal panel construction, and more particularly to an improved panel adapted for various uses where a noiseless nonvibrating construction is an essential factor, such as for rolling, sliding or swinging doors, wall partitions, hospital cubicles or screens, and for other applications such as black boards, and wardrobes, etc.
  • One object of the invention is to provide a panel of the above noted character which will be simple In construction, having improved sound deadening qualities, and inexpensive to manufacture and assemble.
  • Another object is to dispense with many of the forming operations on the panel plates heretofore found necessary to connect the plates together at their edges.
  • Fig. 1 is a face view of one type of panel to which my invention is applied.
  • Fig. 2 is a transverse sectional view adjacent one of the margins'of the panel shown in Fig. 1.
  • Fig. 3 is similar to Fig. 2 and illustrates a modined form of construction.
  • Fig. 4 is a further modification.
  • Fig. 5 illustrates a form of frame member comprising a constructional element of my'panel.
  • Fig. 6 is another form of frame member.
  • the reference numeral I0 indicates a metal panel incorporating two oppositely disposed plates I I and I2 adapted to be connected together adjacent their outer margins.
  • many different forms of connection have been utilized to obtain the solid union necessary atl this point to insure against noises being set up in the panel as a result of vibration.
  • Those forms of connection involved the use of various expedients such as welding the preformed flanged edges of the plates together at intervals along the panel edges, and the many operations necessary were both time consuming and expensive.
  • the plates II and I2 are each formed with in- Wardly directed flanges III which are shaped ad- 10 jacent their ends to provide outwardly extending edge portions I5 which are adapted to be tightly engaged by the inturned edges I6 of a molding strip I1. It will be seen that the member I3 establishes a proper space I8 between the opposed 15 ends of the flanges III to effect the aforenamed tight engagement of the molding strip Il, and to thereby rigidly hold the parts together.
  • the member I3 is independent of and without connection to either the panel 20 plates or the molding strip, and that said member functions only as a spacing means for holding the plates apart and at a proper distance apart to cause the molding strip to tightly engage the outwardly extending edges I5 of the panel plates. 25
  • This construction material ly simplifies the forming operation on the parts and assembling thereof to form the final panel, since the spacing member I3 is merely a simple framework having no interlocking connection with the edges of the molding 30 strip or the panel plates.
  • the spacing member I3 may be in the form of a frame as illustrated in Fig. 5 having mitered corners.
  • the space between the plates I I and I2 may be filled with any appropriate sound deadening material I9 such 35 as sheet asbestos, fiber, or cardboard.
  • Fig. 3 there is shown a slightly different form of construction with reference to the rigid spacing member.
  • a tubular member 20 of rectangular cross section has been substituted for 40 the channel section I3, the relationship of the parts being the same as described in connection with Fig. 2.
  • I have shown in this panel a laminated form of card board filler 2 I, but itis obvious that any other suitable form of filler may be used.
  • the member 20 may take the form of a frame as depicted in Fig. 6 wherein top and bottom pieces 22 are spaced by the uprights 23.
  • a frame 24 of solid construction is shown in Fig. 4.
  • a frame of 50 the type shown in Fig. 5 is used it may comprise metal channel mitered as at 25, and the free ends brought together at one of the corners as indicated at 26.
  • the parts are shaped so that the spacing member the strip of molding and 55 the inwardly directed flanges of the plates have faces extending 'in parallel abutting relation transversely of the panel.
  • the corners of the frames may be welded at the meeting edges if desired, and it is usual in panels of this kind to miter and weld the corners of the molding strips.
  • a panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of said flanges.
  • a panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of said flanges, said molding strip including plane surfaces abutting said flanges on their outer surfaces.
  • a panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of said flanges, said molding strip including plane surfaces abutting said flanges on their outer surfaces, the abutting surfaces being disposed in parallel relation transversely of the panel.
  • a panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said structural member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of said flanges, said structural member being of channel cross-section.
  • a panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of said flanges, said structural member being tubular in cross-section.
  • a panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space-between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of said flanges, said structural member being of solid cross-section.
  • a panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces,'and a molding strip having inturned edges tightly en ⁇ gaging the outwardly extending edge portions of the flanges, said frame surrounding a sound-deadening filler.
  • a panel construction comprising a pair ofA metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of the flanges, said structural member comprising a frame extending around the interior of the panel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Panels For Use In Building Construction (AREA)

Description

June 2, 1936.
M` LOEWY Filed May 9, 1955 METAL PANEL CONSTRUCTION l I l l t I t /Z/ BY :jl-9v a'.
INVENTOR.
ATTORNEY.
Patented June 2,` 1936 PATENT GFFICE METAL PANEL CONSTRUCTION Morris Loewy, Flushing, N. Y.
Application May 9, 1935, Serial No. 20,601
s claims.
My invention relates to metal panel construction, and more particularly to an improved panel adapted for various uses where a noiseless nonvibrating construction is an essential factor, such as for rolling, sliding or swinging doors, wall partitions, hospital cubicles or screens, and for other applications such as black boards, and wardrobes, etc.
One object of the invention is to provide a panel of the above noted character which will be simple In construction, having improved sound deadening qualities, and inexpensive to manufacture and assemble.
, Another object is to dispense with many of the forming operations on the panel plates heretofore found necessary to connect the plates together at their edges.
. Various other objects and advantages of the invention will appear as the description proceeds, reference being made to the accompanying drawing illustrating various forms in which the invention may be embodied.
Fig. 1 is a face view of one type of panel to which my invention is applied.
Fig. 2 is a transverse sectional view adjacent one of the margins'of the panel shown in Fig. 1.
Fig. 3 is similar to Fig. 2 and illustrates a modined form of construction.
Fig. 4 is a further modification.
Fig. 5 illustrates a form of frame member comprising a constructional element of my'panel.
Fig. 6 is another form of frame member.
In the drawing the reference numeral I0 indicates a metal panel incorporating two oppositely disposed plates I I and I2 adapted to be connected together adjacent their outer margins. Heretofore many different forms of connection have been utilized to obtain the solid union necessary atl this point to insure against noises being set up in the panel as a result of vibration. Those forms of connection involved the use of various expedients such as welding the preformed flanged edges of the plates together at intervals along the panel edges, and the many operations necessary were both time consuming and expensive. Other constructions involving the use of more orv less complicated bends at the edges of the plates and in which the bent conformations were depended upon to not only connect the plates together but also to space the plates apart were not entirelysatisfactory since it is difficult to obtain the accurate bending or forming of the plates at their margins to insure proper spacing and at the same time a rigid vibration free connection between the plates. According to my invention the simplied construction at the plate edges does away with welding operations at the edges of the flanges, and the need of depending on the formed margins of the plates to obtain the space between the walls of the plates. I provide a structural member which may comprise a channelsection as indicated at I3 in Fig. 2 in order to obtain the definite spacing required. The plates II and I2 are each formed with in- Wardly directed flanges III which are shaped ad- 10 jacent their ends to provide outwardly extending edge portions I5 which are adapted to be tightly engaged by the inturned edges I6 of a molding strip I1. It will be seen that the member I3 establishes a proper space I8 between the opposed 15 ends of the flanges III to effect the aforenamed tight engagement of the molding strip Il, and to thereby rigidly hold the parts together. It will also be observed that the member I3 is independent of and without connection to either the panel 20 plates or the molding strip, and that said member functions only as a spacing means for holding the plates apart and at a proper distance apart to cause the molding strip to tightly engage the outwardly extending edges I5 of the panel plates. 25 This construction materially simplifies the forming operation on the parts and assembling thereof to form the final panel, since the spacing member I3 is merely a simple framework having no interlocking connection with the edges of the molding 30 strip or the panel plates. The spacing member I3 may be in the form of a frame as illustrated in Fig. 5 having mitered corners. The space between the plates I I and I2 may be filled with any appropriate sound deadening material I9 such 35 as sheet asbestos, fiber, or cardboard.
In Fig. 3 there is shown a slightly different form of construction with reference to the rigid spacing member. Here a tubular member 20 of rectangular cross section has been substituted for 40 the channel section I3, the relationship of the parts being the same as described in connection with Fig. 2. I have shown in this panel a laminated form of card board filler 2 I, but itis obvious that any other suitable form of filler may be used. 45 The member 20 may take the form of a frame as depicted in Fig. 6 wherein top and bottom pieces 22 are spaced by the uprights 23.
As a further substitute a frame 24 of solid construction is shown in Fig. 4. When a frame of 50 the type shown in Fig. 5 is used it may comprise metal channel mitered as at 25, and the free ends brought together at one of the corners as indicated at 26. Preferably the parts are shaped so that the spacing member the strip of molding and 55 the inwardly directed flanges of the plates have faces extending 'in parallel abutting relation transversely of the panel. However, the forego: ing details may be varied within the scope of the appended claims. The corners of the frames may be welded at the meeting edges if desired, and it is usual in panels of this kind to miter and weld the corners of the molding strips.
Having thus described my invention, I claim and desire to protect by Letters Patent:
1. A panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of said flanges.
2. A panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of said flanges, said molding strip including plane surfaces abutting said flanges on their outer surfaces.
3. A panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of said flanges, said molding strip including plane surfaces abutting said flanges on their outer surfaces, the abutting surfaces being disposed in parallel relation transversely of the panel.
4. A panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said structural member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of said flanges, said structural member being of channel cross-section.
5. A panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of said flanges, said structural member being tubular in cross-section.
6. A panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space-between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of said flanges, said structural member being of solid cross-section.
7. A panel construction comprising a pair of metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces,'and a molding strip having inturned edges tightly en` gaging the outwardly extending edge portions of the flanges, said frame surrounding a sound-deadening filler.
8. A panel construction comprising a pair ofA metal plates provided at their margins with inturned flanges shaped adjacent their ends to form outwardly extending edge portions, a rigid structural member between the plates immediately beneath said flanges, said flanges being spaced from each other by said structural member, said member including a plane surface extending across the space between the flanges and abutting them on their inside surfaces, and a molding strip having inturned edges tightly engaging the outwardly extending edge portions of the flanges, said structural member comprising a frame extending around the interior of the panel.
MORRIS LOEWY.
structural member comprising a- A
US20601A 1935-05-09 1935-05-09 Metal panel construction Expired - Lifetime US2042721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US20601A US2042721A (en) 1935-05-09 1935-05-09 Metal panel construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20601A US2042721A (en) 1935-05-09 1935-05-09 Metal panel construction

Publications (1)

Publication Number Publication Date
US2042721A true US2042721A (en) 1936-06-02

Family

ID=21799527

Family Applications (1)

Application Number Title Priority Date Filing Date
US20601A Expired - Lifetime US2042721A (en) 1935-05-09 1935-05-09 Metal panel construction

Country Status (1)

Country Link
US (1) US2042721A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795305A (en) * 1941-11-17 1957-06-11 Spencer B Bagge Wall construction
US3073476A (en) * 1956-02-16 1963-01-15 Amos E Heacock Packaging panel
US3176789A (en) * 1962-01-26 1965-04-06 Lighter Stephen Acoustic panels
US3192815A (en) * 1963-06-04 1965-07-06 Black & Decker Mfg Co Work table for stationary power-operated machine
US3202416A (en) * 1961-02-20 1965-08-24 Chester S Wright Apparatus for panel board assembly
US3235040A (en) * 1963-05-03 1966-02-15 Dow Chemical Co Sandwich panel structure with edge trim
US3512305A (en) * 1968-02-20 1970-05-19 Stanley Works Metal clad door
US4520057A (en) * 1982-12-28 1985-05-28 Kawasaki Jukogyo Kabushiki Kaisha Composite plate
DE4418967A1 (en) * 1994-05-31 1995-12-07 Knierim Gmbh U Co Kg Metall Un Composite metal element for partitions etc.
US5577363A (en) * 1995-02-23 1996-11-26 Menasha Corporation Structural panel

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795305A (en) * 1941-11-17 1957-06-11 Spencer B Bagge Wall construction
US3073476A (en) * 1956-02-16 1963-01-15 Amos E Heacock Packaging panel
US3202416A (en) * 1961-02-20 1965-08-24 Chester S Wright Apparatus for panel board assembly
US3176789A (en) * 1962-01-26 1965-04-06 Lighter Stephen Acoustic panels
US3235040A (en) * 1963-05-03 1966-02-15 Dow Chemical Co Sandwich panel structure with edge trim
US3192815A (en) * 1963-06-04 1965-07-06 Black & Decker Mfg Co Work table for stationary power-operated machine
US3512305A (en) * 1968-02-20 1970-05-19 Stanley Works Metal clad door
US4520057A (en) * 1982-12-28 1985-05-28 Kawasaki Jukogyo Kabushiki Kaisha Composite plate
DE4418967A1 (en) * 1994-05-31 1995-12-07 Knierim Gmbh U Co Kg Metall Un Composite metal element for partitions etc.
US5577363A (en) * 1995-02-23 1996-11-26 Menasha Corporation Structural panel

Similar Documents

Publication Publication Date Title
US2042721A (en) Metal panel construction
US2322700A (en) Structure
US2114617A (en) Joint construction
US2136273A (en) Sheet metal window frame structure and method of forming the same
US3722167A (en) Runner for ceiling suspension
US2717062A (en) Fire door
US2706541A (en) Metallic partition structure
US2589729A (en) Metallic window sash
US849742A (en) Metal door.
US2567357A (en) Hollow metal door construction
US2636580A (en) Flush corner metal frame construction
US3085664A (en) Frame member
US1329600A (en) Metal sash-bar
US2254190A (en) Mirror door for cabinets
US2686579A (en) Frameless garage door
US1233310A (en) Sheet-metal frame.
US956239A (en) Metal screen.
US1396442A (en) Railing, gate, grille, &c.
US933328A (en) Sheet-metal door, wainscoting, &c.
US1439439A (en) Metal door
US1692271A (en) Drier cabinet
US2117269A (en) Frame construction
US1829331A (en) Construction unit
US1039371A (en) Hollow metal door and the like.
US1748103A (en) Metal door