GB266329A - Cutter bar for coal cutting machines without axial reciprocation of the bar - Google Patents

Cutter bar for coal cutting machines without axial reciprocation of the bar

Info

Publication number
GB266329A
GB266329A GB3437/27A GB343727A GB266329A GB 266329 A GB266329 A GB 266329A GB 3437/27 A GB3437/27 A GB 3437/27A GB 343727 A GB343727 A GB 343727A GB 266329 A GB266329 A GB 266329A
Authority
GB
United Kingdom
Prior art keywords
bar
cutting machines
axial reciprocation
bits
coal
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
GB3437/27A
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.)
WESTFALIA AG MASCHF
Original Assignee
WESTFALIA AG MASCHF
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 WESTFALIA AG MASCHF filed Critical WESTFALIA AG MASCHF
Publication of GB266329A publication Critical patent/GB266329A/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)
  • Milling Processes (AREA)

Abstract

266,329. Maschinenfabrik Westfalia Akt.-Ges. Feb. 16, 1926, [Convention date]. Coal-cutting machines. - In a coal-cutting machine of the cutter bar type in which sufficient bits are provided to enable the machine to operate without axial reciprocation of the bar, the bits are arranged on or behind three helical ribs spaced around the bar at angular distances of 120‹, the space between any two bits on one row being fully covered by the preceding bit and the following bit.
GB3437/27A 1926-02-16 1927-02-07 Cutter bar for coal cutting machines without axial reciprocation of the bar Expired GB266329A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE266329X 1926-02-16

Publications (1)

Publication Number Publication Date
GB266329A true GB266329A (en) 1927-06-30

Family

ID=5997371

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3437/27A Expired GB266329A (en) 1926-02-16 1927-02-07 Cutter bar for coal cutting machines without axial reciprocation of the bar

Country Status (2)

Country Link
FR (1) FR628524A (en)
GB (1) GB266329A (en)

Also Published As

Publication number Publication date
FR628524A (en) 1927-10-25

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