US246346A - Tube-drawing mandrel - Google Patents

Tube-drawing mandrel Download PDF

Info

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
Application number
Publication date
Application granted granted Critical
Publication of US246346A publication Critical patent/US246346A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D17/00Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/04Forming 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.

Landscapes

  • 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.
US246346D Tube-drawing mandrel Expired - Lifetime US246346A (en)

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
US246346D Expired - Lifetime US246346A (en) Tube-drawing mandrel

Country Status (1)

Country Link
US (1) US246346A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
US246346A (en) Tube-drawing mandrel
US1319837A (en) Method for reducing rods and tubes.
US687464A (en) Die for making screw-threads on tubes.
US1184614A (en) Support for moving stock-rods.
US1404819A (en) Tube expander
US430539A (en) Die for forging axle-boxes
US563932A (en) leavenworth
US391994A (en) Wilhelm von flotow and hermann leidig
US647676A (en) Means or apparatus for cleaning tubes of tubular boilers.
US478000A (en) Pipe or flue beader and expander
US656712A (en) Method of making forked eyebars.
US324706A (en) William kent
US1912128A (en) Machine for lock-seaming sheet metal
US214172A (en) Improvement in dies for making carriage-clips
US721213A (en) Art of rolling tubes.
US721210A (en) Art of rolling tubes.
US123554A (en) Improvement in dies for making wrench-heads
US495592A (en) knight
US560038A (en) layigne
US331570A (en) Mandrel
US343727A (en) pratt
US628747A (en) Bung.
US1046027A (en) Caster.
US353425A (en) mchale
US308084A (en) Portable revolving beak-horn