GB1210292A - Improvements in or relating to devices for breaking down hard or rocky materials - Google Patents

Improvements in or relating to devices for breaking down hard or rocky materials

Info

Publication number
GB1210292A
GB1210292A GB2841368A GB2841368A GB1210292A GB 1210292 A GB1210292 A GB 1210292A GB 2841368 A GB2841368 A GB 2841368A GB 2841368 A GB2841368 A GB 2841368A GB 1210292 A GB1210292 A GB 1210292A
Authority
GB
United Kingdom
Prior art keywords
breaking down
relating
devices
down hard
rocky materials
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
GB2841368A
Inventor
Donald Thomas Walsh
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.)
Gullick Dobson Ltd
Original Assignee
Gullick Dobson Ltd
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 Gullick Dobson Ltd filed Critical Gullick Dobson Ltd
Priority to GB2841368A priority Critical patent/GB1210292A/en
Publication of GB1210292A publication Critical patent/GB1210292A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C37/00—Other methods or devices for dislodging with or without loading
    • E21C37/02—Other methods or devices for dislodging with or without loading by wedges

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

1,210,292. Mineral and rock-mining appliances. GULLICK DOBSON Ltd. 29 May, 1969 [14 June, 1968], No. 28413/68. Heading E1F. A device for breaking down hard or rocky materials has means anchorable in a borehole or boreholes in the material whilst one or more breaker tools of the device is or are driven into the material. Preferably the or each breaker - a wedge 15, draft or other expanding device, is mounted on the piston rod 14 of a ram 11 incorporated in a bracket 10 anchorable to the material by one or expandable bolts or mandrels 19 mounted on the bracket that through a lug 21 can also bear against the material.
GB2841368A 1968-06-14 1968-06-14 Improvements in or relating to devices for breaking down hard or rocky materials Expired GB1210292A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2841368A GB1210292A (en) 1968-06-14 1968-06-14 Improvements in or relating to devices for breaking down hard or rocky materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2841368A GB1210292A (en) 1968-06-14 1968-06-14 Improvements in or relating to devices for breaking down hard or rocky materials

Publications (1)

Publication Number Publication Date
GB1210292A true GB1210292A (en) 1970-10-28

Family

ID=10275235

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2841368A Expired GB1210292A (en) 1968-06-14 1968-06-14 Improvements in or relating to devices for breaking down hard or rocky materials

Country Status (1)

Country Link
GB (1) GB1210292A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees