US1502873A - Perforated sheet metal - Google Patents
Perforated sheet metal Download PDFInfo
- Publication number
- US1502873A US1502873A US1502873DA US1502873A US 1502873 A US1502873 A US 1502873A US 1502873D A US1502873D A US 1502873DA US 1502873 A US1502873 A US 1502873A
- Authority
- US
- United States
- Prior art keywords
- sheet
- metal
- sheet metal
- perforated sheet
- bead
- 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
Links
- 229910052751 metal Inorganic materials 0.000 title description 23
- 239000002184 metal Substances 0.000 title description 23
- 239000011324 bead Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D2581/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within
- B65D2581/3401—Cooking or heating method specially adapted to the contents of the package
- B65D2581/3402—Cooking or heating method specially adapted to the contents of the package characterised by the type of product to be heated or cooked
- B65D2581/3405—Cooking bakery products
- B65D2581/3406—Pizza or bread
Definitions
- This invention relates to perforated sheet metal, and more particularly to thin sheet l ⁇ the perforation forming an opening 2, the
- I accomplish the desired result of perforating a Vsheet of thin metal., such as aluminunn, with a series of perforations relativelyv close together and" at thefsameV time,'rounding or beading the edge of the opening, thereby avoiding all sharpness and irregularities.
- I also so shape the sheet metal immediately adjacent to the beaded opening or perforation as to greatly strengthen the. same, thereby enabling me to use a large number of erforations without. roducing undue wea ness in the perforatedp sheet as a whole.
- the invention consists in the improved article'herein illustrated and described, and the method of makin the same; all of which will be more fu y set forth in the appended claims.
- Fig. 1 is a perspective view of a portion of a. sheet of thin metal, such as aluminum, to which my invention is particularly applicable.
- Fig. 2 is a plan View showing the first operation of punching an aperture.
- Fig. 3 is a sectional view, enlarged, taken in the plane of the line 3-3 of Fig. 2.
- Fig. 4 is a plan view 'of the sheet of metal, showing the second operation.
- Fig. 5 is a sectional view, enlarged, taken in the plane of the line 5 5 of Fig. 4.
- the thickness of the bead is greater than the thickness of the metal of the sheet 1, the whole having more of an embossed appearance than of a bent, drawn or punched effect.
- This strengthening feature is further promoted by so shaping the dies as to locate the bead in its finished position at the end of the sloped portion, more on one side of the metal sheet than on the other. It will be seen by reference to Fig. 5, for example, that the ring 4 stands outwardly from the side or surface 6 of the sheet 1, while the bead 5 stands out lfrom the other surface 7 of said sheet.
- the improved perforated sheet metal comprising a bead surrounding and defining the perforation and of a size greater than the thickness of the sheet metal, and an annular ring surrounding the beaded perforation and extending outwardly beyond one surface of the metal, the metal between the ring and the bead being indined.
- the improved perforated sheet metal comprising a bead surrounding and delining the perforation and of a size greater than the thickness of the sheet metal, a portion of the bead being in a plane parallel'l to and beyond one surface of the sheet metal, and an annular trussA surrounding the bead.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Toys (AREA)
Description
uy 29 i924., L5273 G. A. @BERG PERFORATED SHEET METAL Filed NOV. l5 1922 Patented July 29k, 1924.
UNITED STATES PATENT OFFICE.
GUNNABD A.. OBERG, OF JAMESTOWN, NEW YORK, ASSIGNOR TO BLACKSTONE MANU- FACTURING COMPANY, OF JAMESTOWN, NEW YORK, A CORPORATION 0F NEW YORK.
PERFORATED SHEET METAL.
Application led November 15, 1922. Serial No. 601,198.-
To all lwhom t may Be it known that I, GUNNARD A. OBERG, a citizen of the United States, residing at Jamestown, in the county of Chautauqua and State'of New York,.have invented certain new and useful Improvements in Perforated Sheet Metal, of which the follow' ing isa specification, reference being had to the accompanying drawings and to the reference characters marked thereon, which form a part of this specification.
This invention relates to perforated sheet metal, and more particularly to thin sheet l `the perforation forming an opening 2, the
metal in which a pluralityv of perforations are made in'relatively close proximity to each other.
In using thin sheet metal, as for'example, in cylinders of washing machines, it is very desirable to have all edges rounded and smooth so as to eliminate roughness, prevent tea-ring of garments which may come in contact with the edges, and prevent injury to the hands of the user.
Attempts have been made to obviate this trouble by dipping the perforated metal in a. liquid solution, such as molten tin, to cover the sharp and rough edges, or by binding the edges with strips of appropriate material. The dipping process is not satis' factory for the reason that in withdrawing the article from the tank, the liquid drops off and leaves sharp points; while the binding method is expensive and oftentimes impossible in certain arrangements of construction. t A.
By the present invention, I accomplish the desired result of perforating a Vsheet of thin metal., such as aluminunn, with a series of perforations relativelyv close together and" at thefsameV time,'rounding or beading the edge of the opening, thereby avoiding all sharpness and irregularities. I also so shape the sheet metal immediately adjacent to the beaded opening or perforation as to greatly strengthen the. same, thereby enabling me to use a large number of erforations without. roducing undue wea ness in the perforatedp sheet as a whole.
The invention consists in the improved article'herein illustrated and described, and the method of makin the same; all of which will be more fu y set forth in the appended claims.
In the drawing: Fig. 1 is a perspective view of a portion of a. sheet of thin metal, such as aluminum, to which my invention is particularly applicable.
Fig. 2 is a plan View showing the first operation of punching an aperture.
Fig. 3 is a sectional view, enlarged, taken in the plane of the line 3-3 of Fig. 2.
Fig. 4 is a plan view 'of the sheet of metal, showing the second operation.
Fig. 5 is a sectional view, enlarged, taken in the plane of the line 5 5 of Fig. 4.
By the use of any suitable punch, I perforate the sheet 1, as indicated in Fig. 2,
metal of the sheet 1 surrounding said opening being drawn or bent downwardly at the' 'the sheet l, as clearly shown in Fig. 5. In
other words, the thickness of the bead is greater than the thickness of the metal of the sheet 1, the whole having more of an embossed appearance than of a bent, drawn or punched effect. i
By sloping the metal from the ring 4 in- Wardly and downwardly toward the bead 5, I form a sort of truss-like structure which counterbalances the-weakness of the sheet due to the punching out step, and at the same time strengthens and braces the bead 5 to prevent distortion by strain or otherwise. This strengthening feature is further promoted by so shaping the dies as to locate the bead in its finished position at the end of the sloped portion, more on one side of the metal sheet than on the other. It will be seen by reference to Fig. 5, for example, that the ring 4 stands outwardly from the side or surface 6 of the sheet 1, while the bead 5 stands out lfrom the other surface 7 of said sheet.
I find in practice that this forms a very strong and durable construction. I have shown'but one perforation in'the sheet 1, but it will be understood that similar perforations may be made'in the sheet as closely together as the diameter of the rings 4 will permit.
1 claim as my invention:
l. The improved perforated sheet metal comprising a bead surrounding and defining the perforation and of a size greater than the thickness of the sheet metal, and an annular ring surrounding the beaded perforation and extending outwardly beyond one surface of the metal, the metal between the ring and the bead being indined.
2. The improved perforated sheet metal comprising a bead surrounding and delining the perforation and of a size greater than the thickness of the sheet metal, a portion of the bead being in a plane parallel'l to and beyond one surface of the sheet metal, and an annular trussA surrounding the bead.
In testimony that I claim the foregoing as my invention I afiix my si nature, in the 20 presence of two Witnesses, this 10th day of November. 1922.
GUNNARD A. OBERG.
Witnesses:
MAE LARsEN, FLORENCE HAMMOND.
Publications (1)
Publication Number | Publication Date |
---|---|
US1502873A true US1502873A (en) | 1924-07-29 |
Family
ID=3407042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US1502873D Expired - Lifetime US1502873A (en) | Perforated sheet metal |
Country Status (1)
Country | Link |
---|---|
US (1) | US1502873A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2431238A (en) * | 1946-04-15 | 1947-11-18 | Friedman Theodore | Process of locking flat members to bodies |
US2478031A (en) * | 1944-12-05 | 1949-08-02 | Manning Maxwell & Moore Inc | Manufacture of bourdon instruments |
US2495419A (en) * | 1946-11-20 | 1950-01-24 | Charles F Peterson | Electric heater |
US2666468A (en) * | 1949-07-22 | 1954-01-19 | Illinois Tool Works | Lock washer with thick rim and method of making same |
US2743541A (en) * | 1953-03-10 | 1956-05-01 | Davis Press Pad Co | Press plates |
US2917292A (en) * | 1957-03-29 | 1959-12-15 | Dow Chemical Co | Assemblies of extended surface elements for gas-liquid contact apparatus |
US3110086A (en) * | 1960-02-15 | 1963-11-12 | Douglas Aircraft Co Inc | Coining structural parts |
US4188814A (en) * | 1978-10-30 | 1980-02-19 | Mahaska Industries, Inc. | Self cleaning animal floor assembly and method of fabricating same |
US20050229523A1 (en) * | 2002-09-30 | 2005-10-20 | Bodnar Ernest R | Steel stud with openings and edge formations and method for making such a steel stud |
US20080314108A1 (en) * | 2007-06-22 | 2008-12-25 | Seiko Epson Corporation | Pressing method, method of manufacturing punching plate, punching plate, and liquid ejecting head |
US20080314818A1 (en) * | 2007-06-25 | 2008-12-25 | Seiko Epson Corporation | Pressing method, punching plate, and liquid ejecting head |
US20100229501A1 (en) * | 2004-10-06 | 2010-09-16 | Bodnar Ernest R | Steel stud with openings and edge formations and method |
US10216038B2 (en) * | 2015-04-23 | 2019-02-26 | Boe Technology Group Co., Ltd. | Backplate, support frame for backlight unit, backlight unit and display device |
US10226595B2 (en) * | 2014-06-16 | 2019-03-12 | Edwards Lifesciences Corporation | Spring cannulae |
-
0
- US US1502873D patent/US1502873A/en not_active Expired - Lifetime
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2478031A (en) * | 1944-12-05 | 1949-08-02 | Manning Maxwell & Moore Inc | Manufacture of bourdon instruments |
US2431238A (en) * | 1946-04-15 | 1947-11-18 | Friedman Theodore | Process of locking flat members to bodies |
US2495419A (en) * | 1946-11-20 | 1950-01-24 | Charles F Peterson | Electric heater |
US2666468A (en) * | 1949-07-22 | 1954-01-19 | Illinois Tool Works | Lock washer with thick rim and method of making same |
US2743541A (en) * | 1953-03-10 | 1956-05-01 | Davis Press Pad Co | Press plates |
US2917292A (en) * | 1957-03-29 | 1959-12-15 | Dow Chemical Co | Assemblies of extended surface elements for gas-liquid contact apparatus |
US3110086A (en) * | 1960-02-15 | 1963-11-12 | Douglas Aircraft Co Inc | Coining structural parts |
US4188814A (en) * | 1978-10-30 | 1980-02-19 | Mahaska Industries, Inc. | Self cleaning animal floor assembly and method of fabricating same |
US20050229523A1 (en) * | 2002-09-30 | 2005-10-20 | Bodnar Ernest R | Steel stud with openings and edge formations and method for making such a steel stud |
US20100229501A1 (en) * | 2004-10-06 | 2010-09-16 | Bodnar Ernest R | Steel stud with openings and edge formations and method |
US8359813B2 (en) | 2004-10-06 | 2013-01-29 | Bodnar Ernest R | Steel stud with openings and edge formations and method |
US20080314108A1 (en) * | 2007-06-22 | 2008-12-25 | Seiko Epson Corporation | Pressing method, method of manufacturing punching plate, punching plate, and liquid ejecting head |
US20080314818A1 (en) * | 2007-06-25 | 2008-12-25 | Seiko Epson Corporation | Pressing method, punching plate, and liquid ejecting head |
US10226595B2 (en) * | 2014-06-16 | 2019-03-12 | Edwards Lifesciences Corporation | Spring cannulae |
US10216038B2 (en) * | 2015-04-23 | 2019-02-26 | Boe Technology Group Co., Ltd. | Backplate, support frame for backlight unit, backlight unit and display device |
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