GB962787A - Improvements in or relating to a space clearing device for mines - Google Patents

Improvements in or relating to a space clearing device for mines

Info

Publication number
GB962787A
GB962787A GB1425963A GB1425963A GB962787A GB 962787 A GB962787 A GB 962787A GB 1425963 A GB1425963 A GB 1425963A GB 1425963 A GB1425963 A GB 1425963A GB 962787 A GB962787 A GB 962787A
Authority
GB
United Kingdom
Prior art keywords
pump
cylinder
ram
mines
relating
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
GB1425963A
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.)
Gebr Eickhoff Maschinenfabrik u Eisengiesserei GmbH
Original Assignee
Gebr Eickhoff Maschinenfabrik u Eisengiesserei GmbH
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 Gebr Eickhoff Maschinenfabrik u Eisengiesserei GmbH filed Critical Gebr Eickhoff Maschinenfabrik u Eisengiesserei GmbH
Publication of GB962787A publication Critical patent/GB962787A/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
    • E21C35/20—General features of equipment for removal of chippings, e.g. for loading on conveyor

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)
  • Reciprocating Pumps (AREA)
  • Surgical Instruments (AREA)
  • Toys (AREA)

Abstract

962,787. Mineral-mining apparatus. EICKHOFF MASCHINENFABRIK UND EISENGIESSEREI GEB. April 10, 1963 [May 10, 1962], No. 14259/63. Addition to 944,461. Heading E1F. The hydraulic actuating means of the mineraltransferring device of the referred to parent Specification is modified and the means now comprise a double-acting ram 2, 3 the cylinder spaces of which are coupled to the cylinder spaces of pump 4, 5 having an eccentric drive means 6. The cylinder volumes swept by the pump piston in each direction of motion is greater than the cylinder volume swept by the ram piston in the corresponding direction so that by a suitable arrangement of non-return valves 10, 10<SP>1</SP> and 12, 12<SP>1</SP> a portion of the hydraulic media circulating in the pump-ram system is recirculated past valves 12<SP>1</SP>, 12 to and from a supply reservoir where it can be cooled if necessary.
GB1425963A 1962-05-10 1963-04-10 Improvements in or relating to a space clearing device for mines Expired GB962787A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE22868A DE1198764B (en) 1962-05-10 1962-05-10 Drive device for a cross scraper

Publications (1)

Publication Number Publication Date
GB962787A true GB962787A (en) 1964-07-01

Family

ID=7070911

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1425963A Expired GB962787A (en) 1962-05-10 1963-04-10 Improvements in or relating to a space clearing device for mines

Country Status (2)

Country Link
DE (1) DE1198764B (en)
GB (1) GB962787A (en)

Also Published As

Publication number Publication date
DE1198764B (en) 1965-08-19

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