GB799414A - Improvements in or relating to tubing - Google Patents
Improvements in or relating to tubingInfo
- Publication number
- GB799414A GB799414A GB674756A GB674756A GB799414A GB 799414 A GB799414 A GB 799414A GB 674756 A GB674756 A GB 674756A GB 674756 A GB674756 A GB 674756A GB 799414 A GB799414 A GB 799414A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tubing
- ball
- length
- armstrong
- tube
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/30—Finishing tubes, e.g. sizing, burnishing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
799,414. Tube expanding. ARMSTRONG PATENTS CO., Ltd., and ARMSTRONG, F. G. G. April 11, 1957 [March 3, 1956], No. 6747/56. Class 83 (4). A method of concurrently straightening and sizing tubing comprises holding a length of said tubing rigidly only at or adjacent to one end thereof and forcing a ball through said length of tubing from said end to the other end thereof. A long length of tubing 3 is held at one end 3b in a collar 6, the other end 3a being free, while a tungsten carbide ball 2, of a diameter slightly larger than the internal diameter of the tubing, is pushed therethrough from the fixed end by a ram 4. The ball 2 may alternatively be forced through the tubing by hydraulic pressure of the order of 1,000 lb. per square inch, the tubing forming part of an oil circulation circuit actuated by a pump. The fixed end of the tubing may be in threaded engagement with its support or be secured therein by expansion. The sized and straightened tube may be cut into lengths.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB674756A GB799414A (en) | 1956-03-03 | 1956-03-03 | Improvements in or relating to tubing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB674756A GB799414A (en) | 1956-03-03 | 1956-03-03 | Improvements in or relating to tubing |
Publications (1)
Publication Number | Publication Date |
---|---|
GB799414A true GB799414A (en) | 1958-08-06 |
Family
ID=9820053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB674756A Expired GB799414A (en) | 1956-03-03 | 1956-03-03 | Improvements in or relating to tubing |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB799414A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5062854A (en) * | 1973-10-09 | 1975-05-29 | ||
US5524464A (en) * | 1993-09-30 | 1996-06-11 | Matsushita Electric Industrial Co., Ltd. | Workpiece-bore processing apparatus and method |
-
1956
- 1956-03-03 GB GB674756A patent/GB799414A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5062854A (en) * | 1973-10-09 | 1975-05-29 | ||
US5524464A (en) * | 1993-09-30 | 1996-06-11 | Matsushita Electric Industrial Co., Ltd. | Workpiece-bore processing apparatus and method |
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