US2104688A - Method of making threaded tubes - Google Patents
Method of making threaded tubes Download PDFInfo
- Publication number
- US2104688A US2104688A US746323A US74632334A US2104688A US 2104688 A US2104688 A US 2104688A US 746323 A US746323 A US 746323A US 74632334 A US74632334 A US 74632334A US 2104688 A US2104688 A US 2104688A
- Authority
- US
- United States
- Prior art keywords
- tube
- blank
- thread
- thickened portion
- threaded tubes
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/56—Making machine elements screw-threaded elements
Definitions
- the principal objects of this invention are to provide a method of manufacturing a tube having an integral internal thread and to provide means by which the metal necessary for the thread can be provided on a thin tube in a very inexpensive way; to provide such an internally threaded tube with such an integral nut having plenty of metal to carry the thread, and to provide a construction in which an external thread can be employed.
- Fig. 1 is a plan of a flat blank of metal rolled out to shape and cut to the proper dimensions for forming the tube;
- Fig. 2 is an edge view of the same
- Fig. 3 is an elevation of the finished tube
- Fig. 4 is an end View of the same
- Fig. 5 is a longitudinal section showing a form of the invention in which an external thread is employed
- Fig. 6 is an end view thereof.
- the blank ID for forming the tube is rolled out flat, provided with a portion ll of a thickness greater than the thickness of the sheet. of the rest of the blank I0, preferably of at least twice that thickness. This portion is cut ofi at the ends l2 so as not to be quite the same width as the rest of the blank. It is also chamfered or slanted at l 3 in the process of rolling.
- This blank is then rolled up to the form shown in Figs. 3 and 4.
- the thickened portion is made shorter than the thin portion because its internal circumference is less.
- the edges of the tube at I5 are welded together.
- the thickened portion I3 is left inside and later provided with a thread M by cutting or otherwise.
- the tube is provided with an integral internal nut and with the proper metal to support it.
- Figs. 5 and 6 the use of the same method to produce a tube threaded externally. The only difference is that the original blank of metal I6 is thick enough to permit of threading it externally at. H. Both forms of the invention can be applied to a previously formed tube as shown in Fig. 6.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
Jan. 4, 1938. .1. A. ADELL METHOD OF MAKING THREADED TUBES Filed Oct. 1, 1954 z/ afar: (zpzffiiiiezz.
Patented Jan. 4, 1938 UNITED STATES PATENT OFFEQE John A. Adel], Orange, Mass, assignor of onehalf to Alvin L. Johnson, Worcester, Mass.
Application October 1,
3 Claims.
The principal objects of this invention are to provide a method of manufacturing a tube having an integral internal thread and to provide means by which the metal necessary for the thread can be provided on a thin tube in a very inexpensive way; to provide such an internally threaded tube with such an integral nut having plenty of metal to carry the thread, and to provide a construction in which an external thread can be employed.
Other objects and advantages of the invention will appear hereinafter.
Reference is to be had to the accompanying drawing, in which Fig. 1 is a plan of a flat blank of metal rolled out to shape and cut to the proper dimensions for forming the tube;
Fig. 2 is an edge view of the same;
Fig. 3 is an elevation of the finished tube;
Fig. 4 is an end View of the same;
Fig. 5 is a longitudinal section showing a form of the invention in which an external thread is employed, and
Fig. 6 is an end view thereof.
The blank ID for forming the tube is rolled out flat, provided with a portion ll of a thickness greater than the thickness of the sheet. of the rest of the blank I0, preferably of at least twice that thickness. This portion is cut ofi at the ends l2 so as not to be quite the same width as the rest of the blank. It is also chamfered or slanted at l 3 in the process of rolling.
This blank is then rolled up to the form shown in Figs. 3 and 4. The thickened portion is made shorter than the thin portion because its internal circumference is less. The edges of the tube at I5 are welded together. The thickened portion I3 is left inside and later provided with a thread M by cutting or otherwise. Thus the tube is provided with an integral internal nut and with the proper metal to support it.
It will be seen that the extra thickness of metal [3 is turned inward and furnishes the necessary metal to enable a wide thread to be cut or otherwise formed in the interior of the tube to form a nut with all the strength that would be required for it. The thread can be cut without danger of marring the inside surface of the tube.
This constitutes a very inexpensive method of 1934, Serial No. 746,323
producing a tube with aninternal nut, eliminating the necessity of providing a separate nut, and
attaching it to the tube. This saves expense on account of the fact that the steel is rolled in the .form described.
In Figs. 5 and 6 is shown the use of the same method to produce a tube threaded externally. The only difference is that the original blank of metal I6 is thick enough to permit of threading it externally at. H. Both forms of the invention can be applied to a previously formed tube as shown in Fig. 6.
Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:-
1. The method of making an internally threaded tube which consists in rolling ablank of steel to the desired shape and simultaneously rolling upon it a thickened portion, cutting the blank to a form in which the thickened portion is shorter than the main portion of the blank, forming the blank into a complete cylinder, welding the two edges of the cylinder together, and providing an internal screw thread in the thickened portion.
2. The method of making an internally threaded tube which consists in rolling a flat blank from steel having the main portion of a thickness equal to the desired thickness of the walls of the tube, simultaneously rolling a thickened portion at one. end, bending the blank to form a cylindrical tube with the thickened portion inside, securing the two edges of the blank together to complete the tube, and forming a screw thread on the thickened portion at the end to provide it with an integral internal nut.
3. The method of making a threaded tube which consists in rolling a blank of steel to the desired shape and simultaneously rolling upon it a thickened portion, cutting-the blank to a form in which the thickened portion is shorter than the main portion of the blank, forming the blank into a cylinder, welding the edges of the cylinder, providing an internal screw thread in the thick- 45 ened portion, and threading the exterior of the tube.
JOHN A. ADELL.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US746323A US2104688A (en) | 1934-10-01 | 1934-10-01 | Method of making threaded tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US746323A US2104688A (en) | 1934-10-01 | 1934-10-01 | Method of making threaded tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
US2104688A true US2104688A (en) | 1938-01-04 |
Family
ID=25000339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US746323A Expired - Lifetime US2104688A (en) | 1934-10-01 | 1934-10-01 | Method of making threaded tubes |
Country Status (1)
Country | Link |
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US (1) | US2104688A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2520923A (en) * | 1945-06-30 | 1950-09-05 | Robert T Franzel | Force measuring device |
US4603806A (en) * | 1983-08-11 | 1986-08-05 | Nippon Steel Corporation | Method of manufacturing metal pipe with longitudinally differentiated wall thickness |
CN112440163A (en) * | 2020-11-16 | 2021-03-05 | 俞樑兵 | Large-diameter threaded steel pipe forming processing method |
-
1934
- 1934-10-01 US US746323A patent/US2104688A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2520923A (en) * | 1945-06-30 | 1950-09-05 | Robert T Franzel | Force measuring device |
US4603806A (en) * | 1983-08-11 | 1986-08-05 | Nippon Steel Corporation | Method of manufacturing metal pipe with longitudinally differentiated wall thickness |
CN112440163A (en) * | 2020-11-16 | 2021-03-05 | 俞樑兵 | Large-diameter threaded steel pipe forming processing method |
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