US1504194A - Container and method for producing it - Google Patents

Container and method for producing it Download PDF

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Publication number
US1504194A
US1504194A US572558A US57255822A US1504194A US 1504194 A US1504194 A US 1504194A US 572558 A US572558 A US 572558A US 57255822 A US57255822 A US 57255822A US 1504194 A US1504194 A US 1504194A
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United States
Prior art keywords
notches
edges
blank
corrugations
container
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Expired - Lifetime
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US572558A
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Edward D Treanor
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General Electric Co
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General Electric Co
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    • 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
    • B21D51/00—Making hollow objects
    • 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
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12201—Width or thickness variation or marginal cuts repeating longitudinally
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/1241—Nonplanar uniform thickness or nonlinear uniform diameter [e.g., L-shape]

Definitions

  • the general object of the invention is to provide an improved form of container with a corrugated sheet metal wall and also to provide an improved method of corrugating a sheet metal blank toform the container wall. Corrugating the wall of a container is a common expedient and in some cases this feature is of advantage in giving increased strength to the corrugated part.
  • This invention is of particular advantage in connection with sheet metal containers or casings for electrical apparatus such as transformers.
  • the operation of the apparatus causes heat to be generated, '2 the dissipation of which to the surrounding air is facllitated by the increased surface exposure due to the corrugations.
  • a casing for electrical apparatus is often partially or completely filled with an insulating fluid in which the apparatus is immersed and it is therefore desirable or necessary to make such a casing fluid tight.
  • the casing wall have smooth upper and lower '35 edges to fit the contours of the top and base so that these parts may be conveniently secured together by welding or otherwise to form fluid tight joints.
  • One of the objects of the invention therefore, is to provide a 40 container or casing wall with corrugations in such manner that they leave smooth upper and lower edges for attachment to the top and base.
  • Other objects and advantages Wlll appear.
  • Fig. 1 is a 0 view in elevation of the casing
  • Fig. 2 is a plan view of a section of a sheet metal blank which has been partially formed to ,constitute the wall of the casing
  • Fig. 3 is a sectional view on the line 3-3 of Fig. 2.
  • corrugations 4 which serve to increase the surface e posure of the casing to the surrounding an and thusto increase its efficiency in radiating heat which may be generated by electrlcal apparatus enclosed Within the casing.
  • the ends of the corrugations 4 are tapered off so that at least no substantial part reaches the upper or lower edge of the wall 1 to distort them and make more difficult the fitting and attachment of the cover 2 or base 3.
  • the invention has to do .with the corrugated wall 1 and the method of producing it.
  • the wall is formed from a sheet metal blank of equal height.
  • Oppositely disposed spaced notches 5 are formed by punching or otherwise in the upper and lower edges of this blank as shown in the left hand part of Fig. 2 of the drawing.
  • the corrugations 4 are then pressed into the blank by means of suitable dies midway between the notches 5 as shown in the right hand part of Fig. 2.
  • the ends of the corrugations 4 extend between and beyond the bases of the notches 5 but are gradually tapered and terminate-inside the outer edges of the blank.
  • the notches 5 are widest at the edges of the blank and taper to sharp points at their inner ends or bases 6.
  • the blank is necessarily shortened, the amount by which it is shortened depending upon the shape and depth of the corrugations.
  • the edge sections between the outer ends of the notches are not shortened or changed in length.
  • the ends of the corrugations begin to taper near the bases 6 of the notches 5 and their depth decreases toward the edges of the blank so that the shortening of the material of the blank between the bases 6 of the notches and the edges of the blank is of maximum amount between the bases 6 of the notches.
  • This shortening decreases gradually until along the edges of the blank the material between the outer ends of the notches is not shortened or changed appreciably in any way except that these edge sections between the outer ends of the notches are drawn near together to form substantially smooth continuous edges.
  • the shape of the sides of the notches is so designed with respect to the tapering of the adjacent ends of the corrugations that they will be drawn into approximately straightlines close together and preferably perpendicular to the edges of the blank as shown in the right hand part of Fig. 2.
  • the edges of the notches remain in the original plane of the blank metal sheet and the adjacent metal is forced to flow in this plane to straighten the curved edges of the notches and to bring them together or substantially so.
  • the shape of the side edges, the depth and the width of the outer ends of the notches may be calculated with a sufficient degree of approximation or the shape and size of the notches may be easily determined by experiment.
  • the seams or joints formed by these edges are welded or otherwise sealed to make't-hem tight.
  • One or more of these corrugated sheets are bent to form the body 1 of desired size and of cylindrical or other desired form, the meeting edges being welded or otherwise sealed to make them tight.
  • the top or cover 2 and .base 3 are welded or otherwise secured and sealed to the corrugated wall 1 to complete the container.
  • the invention provides a container wall with the advantages incident to an increased heat radiating surface due to corrugating the wall and at the same time its edges are not distorted by the corrugations but are smooth and regular so that they may be easily and tightly fitted and secured to the cover and base.
  • per-ended corrugations terminating between said notches while the edges of said notches remain in the original plane of said blank, the notches being substantially closed by a flow of the met-a1 at their edges in said plane, and shaping the corrugated sheet to form the container wall.
  • the method of producing a container including the forming of spaced notches in an edge of a sheet metal blank, forming corrugations having tapered portions between said notches while the edges of said notches remain in the original plane of said blank, the notches having curved side edges so formed as to be straightened and brought substantially together by a flow of the adjacent metal in said original plane of the blank, and shaping the corrugated sheet to form the container wall.
  • the method of producing a container including the forming of spaced notches in opposite edges of a sheet metal blank, forming corrugations having tapered portions extending between the notches at the op posite edges of said sheet while the edges of said notches remain inthe original plane of said blank, the notches having curved side edges so formed as to be straightened and brought substantially together by a flow of the adjacent metal in said original plane of the blank. and shaping the corrugated sheet to form the container wall.
  • the method of producing a corrugated metal sheet including the forming of spaced notches in an edge of a sheet metal blank, and forming corrugations having tapered portions extending between sai notches while the edges of said notches remain in the original plane of said blank, the notches being so formed as to be substantially closed. by a flow of the adjacent metal in said original plane of the blank, whereby a corrugated metal sheet is produced with a substantially smooth edge.
  • the "method of producing a corrugated metal sheet including the forming of spaced notches in an edge of a sheet metal blank, forming corrugations having tapered portions extending between said notches, while the edges of said notches remain in the original plane of said blank, the notches having curved side edges so formed as to be straightened and brought toward each other by a flow of the adjacent metal in said original plane of the blank, and sealing said edges of the notches together, whereb a corrugated metal sheet is produced wit a substantially smooth edge.
  • corrugated metal sheet including the formin of spaced notches in op osite edges of a s eet metal blank, and orming corrugations havin tapered portions extendin between sai notches at opposite edges 0 the sheet while the edges of said notches remain in the original plane of said blank, the notches having curved side edges so formed as to be straightened and brought toward each other by a flow of the adjacent metal in said original plane of the blank, and sealing said edges of the notches together, whereby a corrugated metal sheet is formed with substantially smooth edges.
  • a corrugated metal sheet produced by forming spaced notches in opposite edges of a sheet metal blank, forming corrugations terminating between said notches while the edges of said notches remain in the original plane of said blank, the notches being substantially closed by a flow of the ad acent metal in said plane of the original blank, and sealing the edges of the notches together, said corrugated sheet being characterized by the sealed joints extending inwardly from its edges, terminating between the corrugations and located in the original plane of the blank from which the corrugated sheet was produced.

Description

Aug. 5 1924. 1,504,194
E. D. TREANOR CONTAINER AND METHOD FOR PRODUCING IT Filed July 5, 1922 Patented Aug. 5, 1924.
A main EDWARD D. TREANOR, OF PITTSFIELD, MASSACHUSETTS, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.
CONTAINER AND METHOD FOR PRODUCING IT.
Application filed July 3, 1922. Serial No. 572,558.
T all whom it may concern Be it known that LEDWARD D. TREANoR, a citizen of the United States, residing at Pittsfield, county of Berkshire, State of Massachusetts, have invented new and useful Improvements in Containers and Methods for Producing Them, of which the following is a specification. My invention relates to sheet metal con- 1 tainers and to methods for producing them. The general object of the invention is to provide an improved form of container with a corrugated sheet metal wall and also to provide an improved method of corrugating a sheet metal blank toform the container wall. Corrugating the wall of a container is a common expedient and in some cases this feature is of advantage in giving increased strength to the corrugated part. 2 This invention, however, is of particular advantage in connection with sheet metal containers or casings for electrical apparatus such as transformers. The operation of the apparatus causes heat to be generated, '2 the dissipation of which to the surrounding air is facllitated by the increased surface exposure due to the corrugations.
A casing for electrical apparatus is often partially or completely filled with an insulating fluid in which the apparatus is immersed and it is therefore desirable or necessary to make such a casing fluid tight. For this reason, it is desirable that the casing wall have smooth upper and lower '35 edges to fit the contours of the top and base so that these parts may be conveniently secured together by welding or otherwise to form fluid tight joints. One of the objects of the invention, therefore, is to provide a 40 container or casing wall with corrugations in such manner that they leave smooth upper and lower edges for attachment to the top and base. Other objects and advantages Wlll appear.
Qne form of container or casing which may be used for enclosing electrical apparatus and which may be produced in accordance with this invention is shown in the accompanying drawing in which Fig. 1 is a 0 view in elevation of the casing; Fig. 2 is a plan view of a section of a sheet metal blank which has been partially formed to ,constitute the wall of the casing, and Fig. 3 is a sectional view on the line 3-3 of Fig. 2.
Like reference characters refer to similar parts 1n the different figures of the drawing. 'Lhe particular container shown in the drawing includes a wall 1, top or cover 2, and base 3. The wall 1 has smooth upper and lower edges of some simple contour,
such as circular or elliptical, so as to be conveniently fitted to the cover 2 and base 3. Between these edges is a series of corrugations 4 which serve to increase the surface e posure of the casing to the surrounding an and thusto increase its efficiency in radiating heat which may be generated by electrlcal apparatus enclosed Within the casing. The ends of the corrugations 4 are tapered off so that at least no substantial part reaches the upper or lower edge of the wall 1 to distort them and make more difficult the fitting and attachment of the cover 2 or base 3.
In connection with the container or casing shown in the drawing, the invention has to do .with the corrugated wall 1 and the method of producing it. The wall is formed from a sheet metal blank of equal height. Oppositely disposed spaced notches 5 are formed by punching or otherwise in the upper and lower edges of this blank as shown in the left hand part of Fig. 2 of the drawing. The corrugations 4 are then pressed into the blank by means of suitable dies midway between the notches 5 as shown in the right hand part of Fig. 2. The ends of the corrugations 4 extend between and beyond the bases of the notches 5 but are gradually tapered and terminate-inside the outer edges of the blank. The notches 5 are widest at the edges of the blank and taper to sharp points at their inner ends or bases 6. In forming the corrugations, the blank is necessarily shortened, the amount by which it is shortened depending upon the shape and depth of the corrugations. The
pointed bases of adjacent notches 5 are thus drawn toward each other. By reason of the fact, however, that the corrugations terminate inside the edges of the blank, the edge sections between the outer ends of the notches are not shortened or changed in length. The ends of the corrugations begin to taper near the bases 6 of the notches 5 and their depth decreases toward the edges of the blank so that the shortening of the material of the blank between the bases 6 of the notches and the edges of the blank is of maximum amount between the bases 6 of the notches. This shortening decreases gradually until along the edges of the blank the material between the outer ends of the notches is not shortened or changed appreciably in any way except that these edge sections between the outer ends of the notches are drawn near together to form substantially smooth continuous edges. The shape of the sides of the notches is so designed with respect to the tapering of the adjacent ends of the corrugations that they will be drawn into approximately straightlines close together and preferably perpendicular to the edges of the blank as shown in the right hand part of Fig. 2. During the forming of the corrugations, the edges of the notches remain in the original plane of the blank metal sheet and the adjacent metal is forced to flow in this plane to straighten the curved edges of the notches and to bring them together or substantially so. When the shape of the desired corrugation is known, the shape of the side edges, the depth and the width of the outer ends of the notches may be calculated with a sufficient degree of approximation or the shape and size of the notches may be easily determined by experiment.
After the original blank has been notched and corrugated and the edges of the notches drawn. near together, the seams or joints formed by these edges are welded or otherwise sealed to make't-hem tight. One or more of these corrugated sheets are bent to form the body 1 of desired size and of cylindrical or other desired form, the meeting edges being welded or otherwise sealed to make them tight. The top or cover 2 and .base 3 are welded or otherwise secured and sealed to the corrugated wall 1 to complete the container.
The invention provides a container wall with the advantages incident to an increased heat radiating surface due to corrugating the wall and at the same time its edges are not distorted by the corrugations but are smooth and regular so that they may be easily and tightly fitted and secured to the cover and base.
What I claim as new and desire to secure by Letters Patent of the United States, is,
per-ended corrugations terminating between said notches while the edges of said notches remain in the original plane of said blank, the notches being substantially closed by a flow of the met-a1 at their edges in said plane, and shaping the corrugated sheet to form the container wall.
3. The method of producing a container, including the forming of spaced notches in an edge of a sheet metal blank, forming corrugations having tapered portions between said notches while the edges of said notches remain in the original plane of said blank, the notches having curved side edges so formed as to be straightened and brought substantially together by a flow of the adjacent metal in said original plane of the blank, and shaping the corrugated sheet to form the container wall.
4. The method of producing a container, including the forming of spaced notches in opposite edges of a sheet metal blank, forming corrugations having tapered portions extending between the notches at the op posite edges of said sheet while the edges of said notches remain inthe original plane of said blank, the notches having curved side edges so formed as to be straightened and brought substantially together by a flow of the adjacent metal in said original plane of the blank. and shaping the corrugated sheet to form the container wall.
5. The method of producing a corrugated metal sheet, including the forming of spaced notches in an edge of a sheet metal blank, and forming corrugations having tapered portions extending between sai notches while the edges of said notches remain in the original plane of said blank, the notches being so formed as to be substantially closed. by a flow of the adjacent metal in said original plane of the blank, whereby a corrugated metal sheet is produced with a substantially smooth edge.
6. The "method of producing a corrugated metal sheet, including the forming of spaced notches in an edge of a sheet metal blank, forming corrugations having tapered portions extending between said notches, while the edges of said notches remain in the original plane of said blank, the notches having curved side edges so formed as to be straightened and brought toward each other by a flow of the adjacent metal in said original plane of the blank, and sealing said edges of the notches together, whereb a corrugated metal sheet is produced wit a substantially smooth edge.
7 The method of producing a corrugated metal sheet, including the formin of spaced notches in op osite edges of a s eet metal blank, and orming corrugations havin tapered portions extendin between sai notches at opposite edges 0 the sheet while the edges of said notches remain in the original plane of said blank, the notches having curved side edges so formed as to be straightened and brought toward each other by a flow of the adjacent metal in said original plane of the blank, and sealing said edges of the notches together, whereby a corrugated metal sheet is formed with substantially smooth edges.
8. A corrugated metal sheet produced by forming spaced notches in opposite edges of a sheet metal blank, forming corrugations terminating between said notches while the edges of said notches remain in the original plane of said blank, the notches being substantially closed by a flow of the ad acent metal in said plane of the original blank, and sealing the edges of the notches together, said corrugated sheet being characterized by the sealed joints extending inwardly from its edges, terminating between the corrugations and located in the original plane of the blank from which the corrugated sheet was produced.
In Witness whereof, I have hereunto set my hand this 29th day of June 1922.
EDWARD D. TREANOR.
US572558A 1922-07-03 1922-07-03 Container and method for producing it Expired - Lifetime US1504194A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423863A (en) * 1940-11-16 1947-07-15 George F Wales Sheet metal compartment with shelf supports and method of manufacture
US2514364A (en) * 1945-12-18 1950-07-11 Robert M Bates Ammunition container
DE1154010B (en) * 1958-11-19 1963-09-05 Heinz Evers Dipl Ing Dr Bottle for liquids, especially carbonated beverages
US5590802A (en) * 1995-08-28 1997-01-07 Eagle Manufacturing Company Salvage drum with protected clamping
US5762227A (en) * 1995-08-28 1998-06-09 Eagle Manufacturing Co. Spreadable circular clamp ring and salvage drum including same
US5839598A (en) * 1995-08-28 1998-11-24 Eagle Manufacturing Company Combination lid and spill tray

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423863A (en) * 1940-11-16 1947-07-15 George F Wales Sheet metal compartment with shelf supports and method of manufacture
US2514364A (en) * 1945-12-18 1950-07-11 Robert M Bates Ammunition container
DE1154010B (en) * 1958-11-19 1963-09-05 Heinz Evers Dipl Ing Dr Bottle for liquids, especially carbonated beverages
US5590802A (en) * 1995-08-28 1997-01-07 Eagle Manufacturing Company Salvage drum with protected clamping
US5762227A (en) * 1995-08-28 1998-06-09 Eagle Manufacturing Co. Spreadable circular clamp ring and salvage drum including same
US5839598A (en) * 1995-08-28 1998-11-24 Eagle Manufacturing Company Combination lid and spill tray

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