GB224187A - Mechanical coal- and rock-mining machine - Google Patents

Mechanical coal- and rock-mining machine

Info

Publication number
GB224187A
GB224187A GB14984/24A GB1498424A GB224187A GB 224187 A GB224187 A GB 224187A GB 14984/24 A GB14984/24 A GB 14984/24A GB 1498424 A GB1498424 A GB 1498424A GB 224187 A GB224187 A GB 224187A
Authority
GB
United Kingdom
Prior art keywords
coal
bore
screw
rod
tube
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
GB14984/24A
Original Assignee
Adolf Linnemann
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 Adolf Linnemann filed Critical Adolf Linnemann
Priority to GB14984/24A priority Critical patent/GB224187A/en
Publication of GB224187A publication Critical patent/GB224187A/en
Application status is Expired legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C37/00Other methods or devices for dislodging with or without loading
    • E21C37/04Other methods or devices for dislodging with or without loading by devices with parts pressed mechanically against the wall of a borehole or a slit

Abstract

224,187. Linnemann, A. June 21, 1924. Breaking-down appliances.-A device for breaking coal or rock from a seam &c. comprises a tube a provided with a nut b and adapted to be inserted in a bore-hole, when a screw c cooperating with the nut is caused to force forward a rod e having a wedge part which forces jaws g through slits in the tube and into the coal etc.; on further operation of the screw, owing to the abutment against the bottom of the bore-hole of a stop block f on the rod e, the tube is moved outwards from the bore-hole, the jaws g then tearing away the coal &c. A ball bearing may be provided between the screw c and rod e.
GB14984/24A 1924-06-21 1924-06-21 Mechanical coal- and rock-mining machine Expired GB224187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB14984/24A GB224187A (en) 1924-06-21 1924-06-21 Mechanical coal- and rock-mining machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14984/24A GB224187A (en) 1924-06-21 1924-06-21 Mechanical coal- and rock-mining machine

Publications (1)

Publication Number Publication Date
GB224187A true GB224187A (en) 1924-11-06

Family

ID=10051000

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14984/24A Expired GB224187A (en) 1924-06-21 1924-06-21 Mechanical coal- and rock-mining machine

Country Status (1)

Country Link
GB (1) GB224187A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8294975B2 (en) 1997-08-25 2012-10-23 Donnelly Corporation Automotive rearview mirror assembly
US8842176B2 (en) 1996-05-22 2014-09-23 Donnelly Corporation Automatic vehicle exterior light control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8842176B2 (en) 1996-05-22 2014-09-23 Donnelly Corporation Automatic vehicle exterior light control
US8294975B2 (en) 1997-08-25 2012-10-23 Donnelly Corporation Automotive rearview mirror assembly

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