GB268189A - Improvements in and connected with coal cutting and like machines - Google Patents

Improvements in and connected with coal cutting and like machines

Info

Publication number
GB268189A
GB268189A GB1494626A GB1494626A GB268189A GB 268189 A GB268189 A GB 268189A GB 1494626 A GB1494626 A GB 1494626A GB 1494626 A GB1494626 A GB 1494626A GB 268189 A GB268189 A GB 268189A
Authority
GB
United Kingdom
Prior art keywords
link
ratchet
connecting rod
crank
feed
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
GB1494626A
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 GB1494626A priority Critical patent/GB268189A/en
Publication of GB268189A publication Critical patent/GB268189A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/04—Safety devices
    • E21C35/043—Protection against overload during transfer of machines for slitting or completely freeing the mineral from the seam

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)
  • Transmission Devices (AREA)

Abstract

268,189. Hurd, F. W. June 14, 1926. Coal-cutting machines.-Feed mechanism for a coal-cutting or like machine comprises a feed rotor or shaft operated from a driving shaft through ratchet &c. gearing by crank and link mechanism, the link having a direct pivotal connection with a connecting rod pivoted to the crank, said pivotal connection being constrained by an angularly adjustable guide. A crank 21 carries a connecting rod 10 pivoted to a link 8 connected to a split, spring-pressed strap 6 frictionally engaging a ratchet wheel surrounding a pawl carrier fixed to the feed shaft 1; the pivot 12 of the link 8 and connecting rod 10, or a cross-head carried by the connecting rod adjacent the pivot, moves along a straight or arcuate guide 14 which, by means of toothed quadrants 17, 18, or gears, is angularly adjusted to vary the travel of the link and the throw of the ratchet. In case cf overload, the strap 6 slips on the ratchet wheel. Two sets of opposed ratchet gears may be provided and controlled by an intermediate clutch to permit reversal of the drive. Three or more cranks and associated ratchet mechanisms may be provided and arranged to operate in different phases to give a continuous feed.
GB1494626A 1926-06-14 1926-06-14 Improvements in and connected with coal cutting and like machines Expired GB268189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1494626A GB268189A (en) 1926-06-14 1926-06-14 Improvements in and connected with coal cutting and like machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1494626A GB268189A (en) 1926-06-14 1926-06-14 Improvements in and connected with coal cutting and like machines

Publications (1)

Publication Number Publication Date
GB268189A true GB268189A (en) 1927-03-31

Family

ID=10050306

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1494626A Expired GB268189A (en) 1926-06-14 1926-06-14 Improvements in and connected with coal cutting and like machines

Country Status (1)

Country Link
GB (1) GB268189A (en)

Similar Documents

Publication Publication Date Title
GB268189A (en) Improvements in and connected with coal cutting and like machines
US2366172A (en) Power unit
GB267381A (en) Improvements in treadle driving mechanism for bicycles and the like
US2312908A (en) Mechanism for transmitting power
US1405241A (en) Power transmission for rotary drills
GB233251A (en) Improvements in and relating to saws
US1741130A (en) Mining machine
GB263310A (en) Improvements in or relating to coal cutting machines and the like
GB275352A (en) Improvements in or relating to the haulage or driving mechanism of coal cutting machines
AT38579B (en) Drill carriage for driving cross passages, tunnels and the like.
GB580650A (en) Improvements in or relating to mining machines
GB547904A (en) Improved gear, for converting oscillating into rotary motion
SU17786A1 (en) Device for recording drape work
GB289236A (en) Device for varying the power in lever driven bicycles
GB275886A (en) Improvements in variable transmission gear and gear boxes
GB184264A (en) Improvements relating to coal cutting and similar machines
GB488178A (en) Improvements in and relating to rowing machines
GB297710A (en) Improvements in, or relating to, rotary driven coal cutting machines and the like
GB629863A (en) Improvements in propelling mechanism for invalid carriages and the like
GB678022A (en) Improvements in intermittent driving mechanisms
GB497669A (en) Improvements in and relating to mechanism for converting rotary into reciprocating motion for operating pumps
GB226939A (en) Improvements in and connected with coal mining machines
GB332230A (en) Improvements in machines for lapping spur gears
GB649307A (en) Mechanism for driving a reciprocating pump by a rotary actioned driving unit
GB192818A (en) Improvements relating to coal and like cutting machines