GB210015A - Improvements in coal-cutting tools - Google Patents

Improvements in coal-cutting tools

Info

Publication number
GB210015A
GB210015A GB1566123A GB1566123A GB210015A GB 210015 A GB210015 A GB 210015A GB 1566123 A GB1566123 A GB 1566123A GB 1566123 A GB1566123 A GB 1566123A GB 210015 A GB210015 A GB 210015A
Authority
GB
United Kingdom
Prior art keywords
coal
cutting tools
shepherd
cutters
drills
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
GB1566123A
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.)
JOHN DIXON SHEPHERD
Original Assignee
JOHN DIXON SHEPHERD
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 JOHN DIXON SHEPHERD filed Critical JOHN DIXON SHEPHERD
Priority to GB1566123A priority Critical patent/GB210015A/en
Publication of GB210015A publication Critical patent/GB210015A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/02—Percussive tool bits

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

210,015. Shepherd, G., and Shepherd, J. D. June 16, 1923. Drills.-A coal-cutting tool is made with two, three, four or five detachable steel cutters 1 fitting in slots in the body 3 with their inner ends projecting. The cutters are retained by a central bit 2, which is loosened when required by a punch inserted in the hole 4. Grooves 6 are made in the body, which is formed by casting or forging.
GB1566123A 1923-06-16 1923-06-16 Improvements in coal-cutting tools Expired GB210015A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1566123A GB210015A (en) 1923-06-16 1923-06-16 Improvements in coal-cutting tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1566123A GB210015A (en) 1923-06-16 1923-06-16 Improvements in coal-cutting tools

Publications (1)

Publication Number Publication Date
GB210015A true GB210015A (en) 1924-01-24

Family

ID=10063153

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1566123A Expired GB210015A (en) 1923-06-16 1923-06-16 Improvements in coal-cutting tools

Country Status (1)

Country Link
GB (1) GB210015A (en)

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