GB301185A - Improvements in or in connection with the manufacture of hollow drills - Google Patents

Improvements in or in connection with the manufacture of hollow drills

Info

Publication number
GB301185A
GB301185A GB3016427A GB3016427A GB301185A GB 301185 A GB301185 A GB 301185A GB 3016427 A GB3016427 A GB 3016427A GB 3016427 A GB3016427 A GB 3016427A GB 301185 A GB301185 A GB 301185A
Authority
GB
United Kingdom
Prior art keywords
mandrel
blank
work
manufacture
connection
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
Application number
GB3016427A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WELLMAN SEAVER ROLLING MILL CO
Original Assignee
WELLMAN SEAVER ROLLING MILL CO
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WELLMAN SEAVER ROLLING MILL CO filed Critical WELLMAN SEAVER ROLLING MILL CO
Priority to GB3016427A priority Critical patent/GB301185A/en
Publication of GB301185A publication Critical patent/GB301185A/en
Expired legal-status Critical Current

Links

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
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/02—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes
    • B21K5/06—Dressing, e.g. sharpening rock drills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

301,185. Wellman Seaver Rolling Mill Co., Ltd., and Smith, S. Nov. 10, 1927. Tubes.-A hollow steel drill blank is made by drawing down a closed ended billet 13, Fig. 1, on a detachably mounted mandrel 11 between dies 14, removing the mandrel and then rolling the blank to reduce its external diameter and increase its wall thickness. The mandrel may be removed by reeling the blank and mandrel between skew rolls after the first operation, and then withdrawing the loosened mandrel by pressure rolls 17 while the work is retained by a stripper plate 19, Fig. 3. The work may be passed through a reheating furnace between the drawing and reducing operations.
GB3016427A 1927-11-10 1927-11-10 Improvements in or in connection with the manufacture of hollow drills Expired GB301185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3016427A GB301185A (en) 1927-11-10 1927-11-10 Improvements in or in connection with the manufacture of hollow drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3016427A GB301185A (en) 1927-11-10 1927-11-10 Improvements in or in connection with the manufacture of hollow drills

Publications (1)

Publication Number Publication Date
GB301185A true GB301185A (en) 1928-11-29

Family

ID=10303292

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3016427A Expired GB301185A (en) 1927-11-10 1927-11-10 Improvements in or in connection with the manufacture of hollow drills

Country Status (1)

Country Link
GB (1) GB301185A (en)

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