GB842028A - Improvements in or relating to setting wedges for collapsable props - Google Patents

Improvements in or relating to setting wedges for collapsable props

Info

Publication number
GB842028A
GB842028A GB25331/57A GB2533157A GB842028A GB 842028 A GB842028 A GB 842028A GB 25331/57 A GB25331/57 A GB 25331/57A GB 2533157 A GB2533157 A GB 2533157A GB 842028 A GB842028 A GB 842028A
Authority
GB
United Kingdom
Prior art keywords
props
collapsable
relating
cap
aug
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
GB25331/57A
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.)
EBERHARD VON CAMPENHAUSEN
WILLY EGGEMANN
Original Assignee
EBERHARD VON CAMPENHAUSEN
WILLY EGGEMANN
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 EBERHARD VON CAMPENHAUSEN, WILLY EGGEMANN filed Critical EBERHARD VON CAMPENHAUSEN
Publication of GB842028A publication Critical patent/GB842028A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/43—Details of wedges
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/58—Devices for setting props or chocks
    • E21D15/581—Devices for setting props or chocks in which the props are pre- loaded

Abstract

842,028. Pit props. EGGEMANN, W. and CAMPENHAUSEN, E. VON [trading as SCHWARZ KOMM.-GES., H.] Aug. 12, 1957 [Aug. 13, 1956], No. 25331/57. Class 20(2) [Also in Group XXV] A setting wedge for a telescopic pit prop is provided with a cap 11 for the wider, striking end 10. The cap is secured by a rivet 15 or interengaging depressions on an enlarged part of the wedge. The cap has reinforcing ribs 18.
GB25331/57A 1956-08-13 1957-08-12 Improvements in or relating to setting wedges for collapsable props Expired GB842028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE842028X 1956-08-13

Publications (1)

Publication Number Publication Date
GB842028A true GB842028A (en) 1960-07-20

Family

ID=6768597

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25331/57A Expired GB842028A (en) 1956-08-13 1957-08-12 Improvements in or relating to setting wedges for collapsable props

Country Status (1)

Country Link
GB (1) GB842028A (en)

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