GB203355A - Improvements in or relating to rotary coal or rock drilling and channelling tools - Google Patents

Improvements in or relating to rotary coal or rock drilling and channelling tools

Info

Publication number
GB203355A
GB203355A GB648922A GB648922A GB203355A GB 203355 A GB203355 A GB 203355A GB 648922 A GB648922 A GB 648922A GB 648922 A GB648922 A GB 648922A GB 203355 A GB203355 A GB 203355A
Authority
GB
United Kingdom
Prior art keywords
cutter
arbor
rings
toothed
channelling
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
GB648922A
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 GB648922A priority Critical patent/GB203355A/en
Publication of GB203355A publication Critical patent/GB203355A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
    • E21C25/10—Rods; Drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)

Abstract

203,355. Rayner, G. H. T., and Rayner, P. March 4, 1922. Coal-cutting machines.- In a tool adapted to cut forwards and sideways and comprising an arbor a, toothed rings c threaded on the arbor to form a long spirally toothed cutter and a central cutter e securing the rings, a sleeve. j, preferably flanged internally, engages an angular enlargement h on the arbor and is held by a lock nut g in engagement with a lug n or recess in the rear cutter ring, so as to hold the cutter rings against rotation. Each cutter ring has on one side a distorted annular recess o which receives the central cutter e or a sleeve p and lug n on an adjacent cutter ring, so as to prevent relative rotation. The arbor may be of angular cross section throughout, and the toothed rings correspondingly formed ; the recesses and projections on the toothed rings may then be dispensed with.
GB648922A 1922-03-04 1922-03-04 Improvements in or relating to rotary coal or rock drilling and channelling tools Expired GB203355A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB648922A GB203355A (en) 1922-03-04 1922-03-04 Improvements in or relating to rotary coal or rock drilling and channelling tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB648922A GB203355A (en) 1922-03-04 1922-03-04 Improvements in or relating to rotary coal or rock drilling and channelling tools

Publications (1)

Publication Number Publication Date
GB203355A true GB203355A (en) 1923-09-04

Family

ID=9815432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB648922A Expired GB203355A (en) 1922-03-04 1922-03-04 Improvements in or relating to rotary coal or rock drilling and channelling tools

Country Status (1)

Country Link
GB (1) GB203355A (en)

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