US246346A - Tube-drawing mandrel - Google Patents
Tube-drawing mandrel Download PDFInfo
- Publication number
- US246346A US246346A US246346DA US246346A US 246346 A US246346 A US 246346A US 246346D A US246346D A US 246346DA US 246346 A US246346 A US 246346A
- Authority
- US
- United States
- Prior art keywords
- mandrel
- balls
- sockets
- tube
- rollers
- 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
- 230000000875 corresponding Effects 0.000 description 8
- 230000000994 depressed Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
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
- B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
- B21D17/04—Forming single grooves in sheet metal or tubular or hollow articles by rolling
Definitions
- the object of this invention is to provide a mandrel for forming lap-welded tubes that will not stick in the tubes and will permit their quicker and easier drawing and cause their better welding.
- Figures l and 2 represent side elevations of an improved mandrel having two oval or ellip-
- Fig. 3 is a vertical sectional elevation on line x, Fig. 2.
- Fig. 4 is a side elevation of a mandrel having three oval or elliptical sockets.
- Fig. 5 is a side elevation of a mandrel having three oval or elliptical sockets, showing the conical top ot' mandrel lifted for the insertion or removal ot' the balls.
- Fig. G is a plan of the three-socketed mandrel on line y y, Fig. 5.
- Fig. 7 is an elevation ot' an obtuse-pointed ball.
- A represents a mandrel provided on opposite sides with two oval or elliptica-l sockets, c c, that may centrally connect with each other, as shown at b, Fig. 3, and that have their bottoms depressed or sunken, as shown at c, and their upper portions fiaring outward and upward, as shown at d, in order to easily admit and hold in proper position the oval or elliptical balls or rollers B, that are placed in said sockets a a at right angles to the long axis of the mandrel A; and
- said balls or rollers B are held in place by means of a spring-pin, C, that is passed transversely through the head ot' said mandrel A, just above the balls or rollers B, and in contact therewith, said balls B being readily removed on withdrawal of the pin C.
- the mandrel A is a square socket, f, for the attachment of the usual handle or rod.
- a mandrel, D provided with three lateral sockets, h li, formed at equal distances apart, and designed to contain corresponding oval or elliptical balls or rollers B.
- Said sockets h h are cut away or communicate with each other as shown at t' il, for the purpose of admitting a larger ball or roller B than could otherwise be introduced in them, and they are depressed or recessed, as shown at k, to correspond with the shape ofthe rollers or balls B.
- the balls B are not introduced into their respective sockets from the front, as shown in Figs. 1, 2, 3, and therefore the said sockets 7L l1, are not .made daring.
- This mandrel D is constructed with a lower cylindrical portion, E, and an upper conical portion, E', the former being provided with a central vertical pin, m, that extends through a corresponding bore, n, in the part E', the division -line between the two parts E E being centrally through the sockets h h.
- the balls B being Protected place in the sockets h h, the upper part, E', is Aset upon the pin on, and secured in place bysorewing the nuto on the top of the said pin m.
- This mandrel D is also provided with the usual handle-s0ckel,f.
- Fig. 7 a ball or roller, B, with ⁇ its ends made obtuse, as shown at p, instead of pointed, as shown in Fig. 2.
- the mandrel-socket will be formed with corresponding obtuse ends.
- a mandrel, A D is held within the tube at the bite77 of the rolls, so that the balls or ro1lersB,instead ofthe smooth face of the mandrel, as usual, shall sustain the pressure of the rolls, and thereby permit the tubes to be more easily and quickly drawn, and by the use of these balls or rollers the internal pressure upon the tubes is a rolling instead ot' a drawing pressure, as is usual, and thereby the weld is made more secure.
- the number of sockets and balls or rollers in a mandrel will usually correspond with the number ot' rolls used in drawing the tubes.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Description
(Model.)
C. H. SGHEERMBSSER.
TUBE DRAWING MANDRBL.
No. 246,346. Patented Aug. 30,1881.
INVENTOR? BY l ATTGRNEYS l WITNESSES: w/
wnrmmgnpw. washingnm n c UNiTED STATES PATENT OFFICE.
CHRISTIAN H. SOHEERMESSER, OF MCKEESPOR'I, PENNSYLVANIA.
TUBE-DRAWING MANDREL.
SPECIFICATION forming part of Letters Patent No. 246,346, dated August 30, 1881.
Application tiled November 27, 1880. (Model.)
To all whom it may concern vtical sockets andv balls.
Be it known that I, CHRrsrrAN H. SGHEER- MESSER, of McKeesport, in the county of Allegh eny and State otPennsylvania,havein vented a new and Improved Mandrel for the Manufacture ot' Tubes and Pipes, of which the following is aspecification.
The object of this invention is to provide a mandrel for forming lap-welded tubes that will not stick in the tubes and will permit their quicker and easier drawing and cause their better welding.
Figures l and 2 represent side elevations of an improved mandrel having two oval or ellip- Fig. 3 is a vertical sectional elevation on line x, Fig. 2. Fig. 4 is a side elevation of a mandrel having three oval or elliptical sockets. Fig. 5 is a side elevation of a mandrel having three oval or elliptical sockets, showing the conical top ot' mandrel lifted for the insertion or removal ot' the balls. Fig. G is a plan of the three-socketed mandrel on line y y, Fig. 5. Fig. 7 is an elevation ot' an obtuse-pointed ball.
Similar letters of reference indicate corresponding' parts.
In the drawings, A represents a mandrel provided on opposite sides with two oval or elliptica-l sockets, c c, that may centrally connect with each other, as shown at b, Fig. 3, and that have their bottoms depressed or sunken, as shown at c, and their upper portions fiaring outward and upward, as shown at d, in order to easily admit and hold in proper position the oval or elliptical balls or rollers B, that are placed in said sockets a a at right angles to the long axis of the mandrel A; and
said balls or rollers B are held in place by means of a spring-pin, C, that is passed transversely through the head ot' said mandrel A, just above the balls or rollers B, and in contact therewith, said balls B being readily removed on withdrawal of the pin C.
In the bottom ot' the mandrel A is a square socket, f, for the attachment of the usual handle or rod.
In Figs. 4, 5, 6 is shown a mandrel, D, provided with three lateral sockets, h li, formed at equal distances apart, and designed to contain corresponding oval or elliptical balls or rollers B. Said sockets h h are cut away or communicate with each other as shown at t' il, for the purpose of admitting a larger ball or roller B than could otherwise be introduced in them, and they are depressed or recessed, as shown at k, to correspond with the shape ofthe rollers or balls B. In this case the balls B are not introduced into their respective sockets from the front, as shown in Figs. 1, 2, 3, and therefore the said sockets 7L l1, are not .made daring. This mandrel D is constructed with a lower cylindrical portion, E, and an upper conical portion, E', the former being provided with a central vertical pin, m, that extends through a corresponding bore, n, in the part E', the division -line between the two parts E E being centrally through the sockets h h. The balls B being putin place in the sockets h h, the upper part, E', is Aset upon the pin on, and secured in place bysorewing the nuto on the top of the said pin m. This mandrel D is also provided with the usual handle-s0ckel,f.
In Fig. 7 is shown a ball or roller, B, with` its ends made obtuse, as shown at p, instead of pointed, as shown in Fig. 2. For using this roller the mandrel-socket will be formed with corresponding obtuse ends.
In drawing tubes a mandrel, A D, is held within the tube at the bite77 of the rolls, so that the balls or ro1lersB,instead ofthe smooth face of the mandrel, as usual, shall sustain the pressure of the rolls, and thereby permit the tubes to be more easily and quickly drawn, and by the use of these balls or rollers the internal pressure upon the tubes is a rolling instead ot' a drawing pressure, as is usual, and thereby the weld is made more secure.
.The number of sockets and balls or rollers in a mandrel will usually correspond with the number ot' rolls used in drawing the tubes.
Having thus fully described my invention, I claim as new and desire to secure byLetters Patent- 'Ihe combination, with the mandrel A, proa vided with lateral sockets a a, and rollers B, of 9 5 CHRISTIAN HEINRICH SGHEERMESSER.
Witnesses WM. MAINS, G. M. EDMUNDsoN.
Publications (1)
Publication Number | Publication Date |
---|---|
US246346A true US246346A (en) | 1881-08-30 |
Family
ID=2315673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US246346D Expired - Lifetime US246346A (en) | Tube-drawing mandrel |
Country Status (1)
Country | Link |
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US (1) | US246346A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3490259A (en) * | 1967-09-13 | 1970-01-20 | Teledyne Inc | Tube bending mandrel |
US4004441A (en) * | 1975-08-28 | 1977-01-25 | Grumman Aerospace Corporation | Process for modifying capillary grooves |
US20070193422A1 (en) * | 2006-02-17 | 2007-08-23 | Raber Robert P | Apparatus and Method for Repairing Damaged Pipe |
-
0
- US US246346D patent/US246346A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3490259A (en) * | 1967-09-13 | 1970-01-20 | Teledyne Inc | Tube bending mandrel |
US4004441A (en) * | 1975-08-28 | 1977-01-25 | Grumman Aerospace Corporation | Process for modifying capillary grooves |
US20070193422A1 (en) * | 2006-02-17 | 2007-08-23 | Raber Robert P | Apparatus and Method for Repairing Damaged Pipe |
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