GB297861A - Improvements in, and relating to, the manufacture of rock drills - Google Patents

Improvements in, and relating to, the manufacture of rock drills

Info

Publication number
GB297861A
GB297861A GB1719127A GB1719127A GB297861A GB 297861 A GB297861 A GB 297861A GB 1719127 A GB1719127 A GB 1719127A GB 1719127 A GB1719127 A GB 1719127A GB 297861 A GB297861 A GB 297861A
Authority
GB
United Kingdom
Prior art keywords
rock drills
relating
manufacture
die
recesses
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
GB1719127A
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.)
HARDY PATENT PICK Co Ltd
Original Assignee
HARDY PATENT PICK Co Ltd
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 HARDY PATENT PICK Co Ltd filed Critical HARDY PATENT PICK Co Ltd
Priority to GB1719127A priority Critical patent/GB297861A/en
Publication of GB297861A publication Critical patent/GB297861A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor

Abstract

297,861. Heginbotham, R., and Hardy Patent Pick Co., Ltd. June 28, 1927. Forging-dies for rock drills having X-section, the planes of the wings forming an acute angle, are provided with dovetailed recesses m to receive two wings while the other two are being shaped by recesses k. The die a is held by a headstock while the die b slides in guides d and is struck on its face f. The cutting edges are brought into right angles to the axis of the tool by a further forging operation.
GB1719127A 1927-06-28 1927-06-28 Improvements in, and relating to, the manufacture of rock drills Expired GB297861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1719127A GB297861A (en) 1927-06-28 1927-06-28 Improvements in, and relating to, the manufacture of rock drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1719127A GB297861A (en) 1927-06-28 1927-06-28 Improvements in, and relating to, the manufacture of rock drills

Publications (1)

Publication Number Publication Date
GB297861A true GB297861A (en) 1928-09-28

Family

ID=10090846

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1719127A Expired GB297861A (en) 1927-06-28 1927-06-28 Improvements in, and relating to, the manufacture of rock drills

Country Status (1)

Country Link
GB (1) GB297861A (en)

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