GB204751A - Improvements in or relating to dies for making or sharpening rock and coal cutting tools - Google Patents

Improvements in or relating to dies for making or sharpening rock and coal cutting tools

Info

Publication number
GB204751A
GB204751A GB1789322A GB1789322A GB204751A GB 204751 A GB204751 A GB 204751A GB 1789322 A GB1789322 A GB 1789322A GB 1789322 A GB1789322 A GB 1789322A GB 204751 A GB204751 A GB 204751A
Authority
GB
United Kingdom
Prior art keywords
dies
relating
making
cutting tools
coal cutting
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
GB1789322A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1789322A priority Critical patent/GB204751A/en
Publication of GB204751A publication Critical patent/GB204751A/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

204,751. Heginbotham, R. June 29, 1922. Percussive drills for coal and rock have a lug w at their rear end and may have a convex face r, Fig. 6, at the cutting end.
GB1789322A 1922-06-29 1922-06-29 Improvements in or relating to dies for making or sharpening rock and coal cutting tools Expired GB204751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1789322A GB204751A (en) 1922-06-29 1922-06-29 Improvements in or relating to dies for making or sharpening rock and coal cutting tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1789322A GB204751A (en) 1922-06-29 1922-06-29 Improvements in or relating to dies for making or sharpening rock and coal cutting tools

Publications (1)

Publication Number Publication Date
GB204751A true GB204751A (en) 1923-10-01

Family

ID=10103072

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1789322A Expired GB204751A (en) 1922-06-29 1922-06-29 Improvements in or relating to dies for making or sharpening rock and coal cutting tools

Country Status (1)

Country Link
GB (1) GB204751A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744344A (en) * 2012-07-30 2012-10-24 嘉禾县刀王刀具有限公司 Knife back forming machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744344A (en) * 2012-07-30 2012-10-24 嘉禾县刀王刀具有限公司 Knife back forming machine
CN102744344B (en) * 2012-07-30 2014-12-24 嘉禾县刀王刀具有限公司 Knife back forming machine

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