GB942682A - Improvements in or relating to mineral and other cutting machines having hydraulic control circuits - Google Patents

Improvements in or relating to mineral and other cutting machines having hydraulic control circuits

Info

Publication number
GB942682A
GB942682A GB519661A GB519661A GB942682A GB 942682 A GB942682 A GB 942682A GB 519661 A GB519661 A GB 519661A GB 519661 A GB519661 A GB 519661A GB 942682 A GB942682 A GB 942682A
Authority
GB
United Kingdom
Prior art keywords
mineral
machine
relating
hydraulic control
control circuits
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
GB519661A
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 GB942682A publication Critical patent/GB942682A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam

Abstract

942,682. Mineral-mining machines. GEBR. EICKHOFF MASCHINENFABRIK UND EISENGIESSEREI. Feb. 13, 1961 [Feb. 18, 1960] No. 5196/61. Heading E1F. A hydraulic circuit permits of the speed of a cutting tool of a machine, preferably a drum type mineral-mining machine, over a work surface being maintained constant as the speed of advance of the machine relative to said work surface is varied so that the power demand on a motor 3 driving both the means 12, 7 for advancing the machine and moving the cutting tool is maintained constant. The valve arrangements 11, 16, 17, 14 and control pumps 8, 9 of the circuit are described in detail.
GB519661A 1960-02-18 1961-02-13 Improvements in or relating to mineral and other cutting machines having hydraulic control circuits Expired GB942682A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE18920A DE1171376B (en) 1960-02-18 1960-02-18 Process and device for automatic control of the feed and cutting speed of mining machines or tunneling machines

Publications (1)

Publication Number Publication Date
GB942682A true GB942682A (en) 1963-11-27

Family

ID=7069879

Family Applications (1)

Application Number Title Priority Date Filing Date
GB519661A Expired GB942682A (en) 1960-02-18 1961-02-13 Improvements in or relating to mineral and other cutting machines having hydraulic control circuits

Country Status (2)

Country Link
DE (1) DE1171376B (en)
GB (1) GB942682A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3627909A1 (en) * 1986-08-16 1988-02-18 Eickhoff Geb ROLLER LOADER FOR UNDERGROUND OPERATION

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE511573C (en) * 1925-05-12 1930-11-01 Eickhoff Maschinenfabrik Geb Large bar or chain cutting machine
DE930506C (en) * 1942-01-23 1955-07-18 Siemens Ag Schraemmaschine
DE833342C (en) * 1950-02-28 1952-03-06 Eickhoff Geb Schreemmaschine with hydraulic intermediate gear for driving the winch and the Schraemarmschwenkvorrichtung

Also Published As

Publication number Publication date
DE1171376B (en) 1964-06-04

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