GB278008A - Improvements in bar-type coal cutting machines - Google Patents

Improvements in bar-type coal cutting machines

Info

Publication number
GB278008A
GB278008A GB25360/27A GB2536027A GB278008A GB 278008 A GB278008 A GB 278008A GB 25360/27 A GB25360/27 A GB 25360/27A GB 2536027 A GB2536027 A GB 2536027A GB 278008 A GB278008 A GB 278008A
Authority
GB
United Kingdom
Prior art keywords
bar
cutting machines
type coal
coal cutting
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
GB25360/27A
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.)
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
Publication of GB278008A publication Critical patent/GB278008A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
    • E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
    • E21C31/04—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices imparting both a rotary and reciprocating motion

Abstract

278,008. Allard, F. Sept. 25, 1926, [Convention date]. Coal-cutting machines. -A coal-cutting machine of the bar type has the end 6 of the bar reduced to the base of the keyslots 5 by which the bar is connected to its driving gear 4, the part 6 reciprocating in a bush 7 which rotates in a ball or roller bearing such as a combined journal and thrust bearing 10, 11. In a modification, the reduced end 6 is keyed to a sleeve of the same diameter as the part 1 of the bar. The engaging parts of the bar and gear 4 may be polygonal.
GB25360/27A 1926-09-25 1927-09-26 Improvements in bar-type coal cutting machines Expired GB278008A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE278008X 1926-09-25

Publications (1)

Publication Number Publication Date
GB278008A true GB278008A (en) 1928-01-12

Family

ID=3867008

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25360/27A Expired GB278008A (en) 1926-09-25 1927-09-26 Improvements in bar-type coal cutting machines

Country Status (1)

Country Link
GB (1) GB278008A (en)

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