US231852A - Matthew l - Google Patents

Matthew l Download PDF

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Publication number
US231852A
US231852A US231852DA US231852A US 231852 A US231852 A US 231852A US 231852D A US231852D A US 231852DA US 231852 A US231852 A US 231852A
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Prior art keywords
die
tube
mandrel
walls
matthew
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Expired - Lifetime
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PLACEMENTS CMI Inc
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Assigned to PLACEMENTS CMI INC. reassignment PLACEMENTS CMI INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CANAM GROUP INC.
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    • 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
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)

Description

mam.) V
M. L. RITCHIE. Tube Drawing Device.
No, 23 ,8 Patented Aug. 31,1880.
WITNESSES NVEN 0R ATTORNEYS QQMwQ E UNITED STATES PATENT OFFICE.
MATTHEW L. RITCHIE, OF NEW YORK, N. Y.
TUBE-DRAWING DEVICE.
SPECIFICATION forming part of Letters Patent No. 231,852, dated August 31, 1880. Application filed March 16, 1880. (ModeL) of a side elevation, partly broken away. Fig.
2 is a detail of the die of my device for making tubing, and Fig. 3 is an end View of the same.
This invention has relation to devices for making tubing and reducing and remaking old tubing; and it consists in the improvements hereinafter fully described, and particularly pointed out in the claim.
The objects of the invention are to finish the interior of the tube while it is being drawn out so as to free the tube from folds, wrinkles, or puckers, and also to regulate the thickness of the tubing.
In the accompanying drawings, A designates a die, through which the tube 13 is represented as being drawn. This tube is also illustrated to show the reduced portion thereof. The die A has inclined walls a a, the inclination being such as to increase the area of the die at one end.-
O designates a mandrel, having tapering sides 0, which correspond with the walls of 3 5 the die A. This mandrel is secured upon a rod, D, so that by means of a screw and wheel at one end of the rod it may be forced for ward into a tube which it is required to draw through the die. As the tube is now drawn and reduced the mandrel, by filling the interior of the tube, prevents wrinkling and the like, and by adjusting the mandrel relatively to the die the walls of the tube will be increased or diminished in thickness according to the position of said mandrel within the die.
What I claim, and desire to secure by Letters Patent, is-
In a device for making tubing and reducing and remaking old tubing, the die A, having inclined walls a a, which give the die increased area at one end, in combination with a mandrel, O, tapered, as at c, to correspond to the walls of the die A, so that by proper adjustment of the mandrel within the die the walls of the tube may be varied in thickness at pleasure, as set forth.
In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.
MATTHEW L. RITCHIE.
Witnesses SAML. CAMPBELL, HOWARD CAMPBELL.
US231852D Matthew l Expired - Lifetime US231852A (en)

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US231852A true US231852A (en) 1880-08-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916664A (en) * 1970-07-09 1975-11-04 United States Steel Corp Starting tubes through a drawing die

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916664A (en) * 1970-07-09 1975-11-04 United States Steel Corp Starting tubes through a drawing die

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