US486624A - Electrical method of and apparatus for forming tubes - Google Patents
Electrical method of and apparatus for forming tubes Download PDFInfo
- Publication number
- US486624A US486624A US486624DA US486624A US 486624 A US486624 A US 486624A US 486624D A US486624D A US 486624DA US 486624 A US486624 A US 486624A
- Authority
- US
- United States
- Prior art keywords
- bar
- mandrel
- rollers
- electrodes
- heated
- 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
- 238000010291 electrical method Methods 0.000 title 2
- 229910052802 copper Inorganic materials 0.000 description 18
- 239000010949 copper Substances 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 16
- 239000002184 metal Substances 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 16
- 230000005611 electricity Effects 0.000 description 12
- 239000004020 conductor Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000005219 brazing Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 101700078171 KNTC1 Proteins 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 150000001879 copper Chemical class 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035611 feeding Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 229920000136 polysorbate Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/08—Seam welding not restricted to one of the preceding subgroups
- B23K11/082—Seam welding not restricted to one of the preceding subgroups of three-dimensional seams
- B23K11/084—Seam welding not restricted to one of the preceding subgroups of three-dimensional seams of helicoïdal seams
Definitions
- Our invention relates to'a method and mechanism for heating and coiling bars into tubes by electricity; and it consists in certain new and useful constructions and combinations of mechanism for performing said operation and in themethod of manipulating the same, substantially as hereinafter described and claimed.
- Figure 1 is a side elevation of the mechanism for" heating and coiling the tube, partly in section, to exhibit the invention more clearly.
- Fig. 2 is a top plan view of the same.
- Fig. 3 represents a double heating apparatus applied to the tube-coiling mechanism, showing the manner in which it is to be partiallyheated by one of the converters and the heating completed from the second converter.
- Fig. 4 is an enlarged view of the rollers for passing the bar through them during the heating operation.
- Fig.6 shows a section of the bar in the rollers which form the electrodes to convey the electricity into the bar.
- Fig, 6 is a section of the bar-which is used for forming the tube.
- Fig. 7 is a section through the coil or tube, showing the manner in which the successive coils of the same fit against each other;
- a B are the rings formed of copper, which are connected to the secondary coils of the converter to convey the heavy electric current from it to the metal to be heated, the negative terminal of the coil being attached to one ring and the positive terminal to another, so that when the bar ofsteel to be heated is in place in the electrodes it will complete the circuit between the conductor-rings A B.
- the conducting-rod a Connected to the conducting-rod a are a series of copper clamps a of tubular form, which are secured to the conductor a by screw-bolts a which enable the clamps to be drawn tightly in place and secured at different distances, as may be desired, upon.the rod a.
- each of. the rods b' has clamps I) held by clampscrews b to the rod, and having upwardlyprojecting bifurcated copper pieces b carrying rollers of copper b b in slots in their bifurcations, similarly to the arrangement of the similar parts on the rod a.
- the parts and connections attached to the rod b are of copper, so as t5 convey the electricity readily, and the rollers b b are in line with the rollers a of", so that the bar to be heated will pass in astraight line throughboth of them.- It will thus be seen that the electricity is made to pass from the electrodes attached to the rod a to the elec trodes attached to the rod 1) through the bar S in five different sections or segments, as shown in Fig. 1, and is heated by different portions of the electric current forming a circuit through it for some considerable distance before the coiling operation is commenced, thus insuring the effective preparation of the bar S by heat for being formed into the tube.
- rollers are driven by the pulleys c on the shafts of the lower ones and are geared together by, a pair of gears c c, as shown in Fig. 4.
- the upper roller with its shaft,is free to rise in a slot in the stand 0 to accommodate itself to different thicknesses of bars and may beheld down by springs or other suitable means under the caps c.
- a stand D having a mandrel d, which is capable of moving endwise in the uprights of the stand in which the. mandrel is journaled.
- This mandrel is provided with a slot d, which will receive the end of the heated bar and hold it while the following portions are Wound upon the mandrel.
- the bar passes under the roller d attached to the stand D before being wound on the mandrel.
- the heated bar As the heated bar is wound on the mandrel it forms itself into the tube S and the beveled or inclined side of the bar overlapping its other inclined side, against which it is continuously wound, heats or cements the bar into one continuous tube, the heat of thebar being greater in the middle of it than on its exterior, causingthe abutting edges to fuse themselves together as the bar is wound on the mandrel.
- clamps a I being adjustable upon their electric conducting-rods a b, can be set nearer to or-farther apart, so as to cause the electricity to traverse greater or less lengths of metal be tween them, and that this adjustment may be accomplished immediately and a fresh elezgtrical contact made by the clamp-screws 0.
- the modification shown in Fig. 3 consists of two converters and sets of converterrings connected electrically with the bar instead of a series of positive and negative electroderollers connected in multiple are, as in Fig. 1.
- the stands 0 and D are insulated from their bases, to which they are fastened by a thin sheet of non-conducting material, such as paper, fiber, or valcanite.
- the mandrel d is revolved by a crank applied to its squared end and turned by hand.
- tubes may be fprmed suitable for gun-barrels and other analogous purposes, which require to be made of steel or iron without brazing or uniting together other than by the heat of the metal caused by their being laid side by side to come to their touching or contiguous surfaces.
- the heat of the bar S to accomplish this effect is preferably raised to a point where the intern 1 core of the bar approaches fluidity, while nit surrounding atmosphere keeps the exterior comparatively cool, except where the successive coils touch or abut against each other.
- Brazing or soldering material may be applied to the edges of the bar, if desired, while it is being coiled on the mandrel; but it is not necessary if the heating is properly conducted.
- the mandrel may also be used to form the coil of'the bar upon it with the edges of the successive turns separated, which will form the coil intoa spring, if desired.
- rollers ct a b b blocks of metal may be employed, between which the bar S is moved, as before described.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Resistance Heating (AREA)
Description
I ZShets-Sheet 1.
G. D. BURTON & EpEgANGELL. ELEGTRIGA (No Model.)
L METHOD OF AND APPARATUS FOR FORMING TUBES.
No. 486,624. Patented Nov. 22, 1892;
(:No Model.)
2 SheetsSheet 2.. G. D. BURTON & E. E. ANGELL. ELEGT'RIGAL METHOD OF AND APPARATUS FOR FORMING TUBES.
Patented Nov. 22,
UNITED STATES GEORGE D. BURTON, OF BOSTON, AND EDWIN E. ANGELL, OF SOMERVILLE,
PATENT ()FFICE.
MASSACHUSETTS, ASSIGNORS TO THE ELECTRICAL FORGING COMPANY,
OF MAINE.
ELECTRICAL METHOD OF AND APPARATUS FOR FORMING TUBES.
SPECIFICATION forming part of Letters lF'atent No. 486,624, dated November 22, 1892; Application filed September 16, 1891. Serial No. 425.895. (No model.)
To all whom it may concern:
Be it known that we, GEORGE D. BURTON, of Boston, in the county of Sufiolk, and EDWIN E. ANGELL, of Somerville, in the county of Middlesex, State of Massachusetts, have invented a new and useful Improvementin the Mode of Forming'Tubes and Coils of Metal by Electricity and Apparatus Therefor, of which the following is a specification.
Our invention relates to'a method and mechanism for heating and coiling bars into tubes by electricity; and it consists in certain new and useful constructions and combinations of mechanism for performing said operation and in themethod of manipulating the same, substantially as hereinafter described and claimed.
1n the drawings, Figure 1 is a side elevation of the mechanism for" heating and coiling the tube, partly in section, to exhibit the invention more clearly. Fig. 2 is a top plan view of the same. Fig. 3 represents a double heating apparatus applied to the tube-coiling mechanism, showing the manner in which it is to be partiallyheated by one of the converters and the heating completed from the second converter. Fig. 4 is an enlarged view of the rollers for passing the bar through them during the heating operation. Fig.6 shows a section of the bar in the rollers which form the electrodes to convey the electricity into the bar. Fig, 6 is a section of the bar-which is used for forming the tube. Fig. 7 is a section through the coil or tube, showing the manner in which the successive coils of the same fit against each other;
A B are the rings formed of copper, which are connected to the secondary coils of the converter to convey the heavy electric current from it to the metal to be heated, the negative terminal of the coil being attached to one ring and the positive terminal to another, so that when the bar ofsteel to be heated is in place in the electrodes it will complete the circuit between the conductor-rings A B.
From one side of the conductingringA extends a copper rod of large dimensions a,
which is bolted to the conducting ring A and is of sufficient size to convey the current without heating the bar. To the other converterring 13 is attached the corresponding copper rod b, which extends parallel to the conductor a or nearly so, and both are parallel, or substantially so, to, the bar to be heated. Connected to the conducting-rod a are a series of copper clamps a of tubular form, which are secured to the conductor a by screw-bolts a which enable the clamps to be drawn tightly in place and secured at different distances, as may be desired, upon.the rod a. Depending from the clamps a are bifurcated copper bars a which carry in their bifurcations the rollers a a of copper, the axes of these rollers moving closely in slots so. that the upper roller may accommodateitself to the different thicknesses of bars which it is desired to heat to form tubes of different sizes. Each of. the rods b' has clamps I) held by clampscrews b to the rod, and having upwardlyprojecting bifurcated copper pieces b carrying rollers of copper b b in slots in their bifurcations, similarly to the arrangement of the similar parts on the rod a. The parts and connections attached to the rod b are of copper, so as t5 convey the electricity readily, and the rollers b b are in line with the rollers a of", so that the bar to be heated will pass in astraight line throughboth of them.- It will thus be seen that the electricity is made to pass from the electrodes attached to the rod a to the elec trodes attached to the rod 1) through the bar S in five different sections or segments, as shown in Fig. 1, and is heated by different portions of the electric current forming a circuit through it for some considerable distance before the coiling operation is commenced, thus insuring the effective preparation of the bar S by heat for being formed into the tube.
In order to drive the bar along through the different electrode-rollers a a and b 13 a series of driving-rollers c c are mounted in the stands 0 in line with the path of the bar, so
that it may pass through between them. These rollers are driven by the pulleys c on the shafts of the lower ones and are geared together by, a pair of gears c c, as shown in Fig. 4. The upper roller, with its shaft,is free to rise in a slot in the stand 0 to accommodate itself to different thicknesses of bars and may beheld down by springs or other suitable means under the caps c.
In order to coil the bar S into the tube S a stand D is provided having a mandrel d, which is capable of moving endwise in the uprights of the stand in which the. mandrel is journaled. This mandrel is provided with a slot d, which will receive the end of the heated bar and hold it while the following portions are Wound upon the mandrel. The bar passes under the roller d attached to the stand D before being wound on the mandrel. As the heated bar is wound on the mandrel it forms itself into the tube S and the beveled or inclined side of the bar overlapping its other inclined side, against which it is continuously wound, heats or cements the bar into one continuous tube, the heat of thebar being greater in the middle of it than on its exterior, causingthe abutting edges to fuse themselves together as the bar is wound on the mandrel.
It will be observed that the clamps a I), being adjustable upon their electric conducting-rods a b, can be set nearer to or-farther apart, so as to cause the electricity to traverse greater or less lengths of metal be tween them, and that this adjustment may be accomplished immediately and a fresh elezgtrical contact made by the clamp-screws 0.
The modification shown in Fig. 3 consists of two converters and sets of converterrings connected electrically with the bar instead of a series of positive and negative electroderollers connected in multiple are, as in Fig. 1. The stands 0 and D are insulated from their bases, to which they are fastened by a thin sheet of non-conducting material, such as paper, fiber, or valcanite.
The mandrel d is revolved by a crank applied to its squared end and turned by hand.
With'this invention tubes may be fprmed suitable for gun-barrels and other analogous purposes, which require to be made of steel or iron without brazing or uniting together other than by the heat of the metal caused by their being laid side by side to come to their touching or contiguous surfaces. The heat of the bar S to accomplish this effect is preferably raised to a point where the intern 1 core of the bar approaches fluidity, while nit surrounding atmosphere keeps the exterior comparatively cool, except where the successive coils touch or abut against each other. Brazing or soldering material may be applied to the edges of the bar, if desired, while it is being coiled on the mandrel; but it is not necessary if the heating is properly conducted. The mandrel may also be used to form the coil of'the bar upon it with the edges of the successive turns separated, which will form the coil intoa spring, if desired.
Instead of rollers ct a b b blocks of metal may be employed, between which the bar S is moved, as before described.
What we claim as new and of our invention is- 1. The process of forming a metal tube, which consists in heating a bar electrically to a higher degree at its core or internal part than upon its exterior, coiling said barin its heated state upon amandrel with its successive-turns abutting against each other, and permitting the coils to expand under the action of the internal heat, whereby their abutting edges are fused together, substantially as set forth.
2. The process of forming a metal tube, which consists informing a bar with its opposite edges beveled or inclined to its faces, heating said bar by an electric current to a higher degree at its core than upon its exterior, coilingthe so-heated bar upon a mandrel, with its bevelededges overlapping each other, and permitting the coils to expand under the action of the internal heat, whereby the abutting overlapping edges of the coils are fused together, substantially as set forth.
3. The combination of two rods of conductive material connected to opposite electric terminals and disposed parallel to each other, clamps adj nstable on said rods, and electrodes projecting in opposite directions from said clamps from each conducting-rod toward. the other, each of said electrodes being provided with a pair of contact-rolls adapted to receive a bar between them, and feed-rolls for feed ing a bar between said electrodes.
t. The combination of two sets of converterrings, each set being independent of the other, a set of electrodes connected with opposite terminals of one set of rings, a set of electrodes connected with oppositeterminals of the other set of rings, and feed mechanism for passing a bar through both sets of electrodes successively.
5. The combination of the rods a and b, respectively connected to the positive and negative terminals of the converter, and the clamps a and b, respectively arranged to slide alongtheirrods, provided with theclamping-screws a N, arranged to clamp them to their rods and carrying their respective electrodes, which complete the circuit through the metal bar to be heated, substantially as described.
E. F. PHILIPSON, CHESTER MARE.
Publications (1)
Publication Number | Publication Date |
---|---|
US486624A true US486624A (en) | 1892-11-22 |
Family
ID=2555472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US486624D Expired - Lifetime US486624A (en) | Electrical method of and apparatus for forming tubes |
Country Status (1)
Country | Link |
---|---|
US (1) | US486624A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2433966A (en) * | 1943-12-16 | 1948-01-06 | Marie S Van Keuren | Method of making tubular members by progressive helical welding |
US2896689A (en) * | 1954-12-28 | 1959-07-28 | Hewlett Packard Co | Apparatus for forming a helical wire coil on an axially traveling rotating mandrel and having fixed guide grooves to iron said coil onto said mandrel |
-
0
- US US486624D patent/US486624A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2433966A (en) * | 1943-12-16 | 1948-01-06 | Marie S Van Keuren | Method of making tubular members by progressive helical welding |
US2896689A (en) * | 1954-12-28 | 1959-07-28 | Hewlett Packard Co | Apparatus for forming a helical wire coil on an axially traveling rotating mandrel and having fixed guide grooves to iron said coil onto said mandrel |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2647981A (en) | Electrical butt seam welding or cutting process and apparatus for carrying out said process | |
US2298249A (en) | Apparatus for making finned tubes | |
US486624A (en) | Electrical method of and apparatus for forming tubes | |
US2811623A (en) | Method of heating metal billets by low frequency electrical power | |
US2209637A (en) | Apparatus for electric induction welding and heating | |
US3140378A (en) | Apparatus and method for welding strips onto a tube | |
US2381742A (en) | Resistance welding metallic strips to metallic bodies | |
US2181445A (en) | Method and apparatus for welding | |
US1278234A (en) | Method of welding metal plates and the like. | |
US1661970A (en) | Electbic welding machine | |
US2761939A (en) | Apparatus for welding by means of electromagnetic induction heating | |
US1874399A (en) | Welding apparatus | |
US1247741A (en) | Electric welding apparatus. | |
US475181A (en) | Electrical m etal-h eater | |
US1640244A (en) | Electric welding apparatus | |
US532838A (en) | Electric welding apparatus | |
US537013A (en) | burton | |
US515778A (en) | Electric metal-working | |
US1381647A (en) | Process of and apparatus for electric-arc welding | |
US686558A (en) | Apparatus for manufacturing tubes, pipes, & c. | |
US1604180A (en) | Arc welding | |
US1924915A (en) | Apparatus for electric welding | |
US1372634A (en) | Method of and apparatus for brazing | |
US466131A (en) | Art of and apparatus for heating metal articles by electricity | |
US1270786A (en) | Apparatus for electric welding. |