GB884369A - Improvements relating to pit-props - Google Patents
Improvements relating to pit-propsInfo
- Publication number
- GB884369A GB884369A GB16073/58A GB1607358A GB884369A GB 884369 A GB884369 A GB 884369A GB 16073/58 A GB16073/58 A GB 16073/58A GB 1607358 A GB1607358 A GB 1607358A GB 884369 A GB884369 A GB 884369A
- Authority
- GB
- United Kingdom
- Prior art keywords
- props
- plate
- pit
- improvements relating
- wedge
- 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
Links
- 238000005452 bending Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
- E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
- E04G25/066—Shores or struts; Chocks telescopic with parts held together by positive means by a wedge
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/54—Details of the ends of props
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
884,369. Telescopic pit props. GUTEHOFFNUNGSHUTTE STERKRADE A.G. May 19, 1958 [May 17, 1957], No. 16073/58. Class 20(2) In a telescopic pit prop for use in steep seams, the upper part 1 of the prop is provided with a separate head 7 having a sleeve 5 which fits over the part 1 and is adjusted by a wedge 8 passing through slots 6 in the sleeve and bearing on a plate 2 secured to the part 1. The plate 2 carries a chain 4 for connecting to other props. The plate 7 has a recess 7<SP>1</SP> and the plate 2 a hole 2<SP>1</SP> to prevent the wedge 8 from bending under load.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE884369X | 1957-05-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB884369A true GB884369A (en) | 1961-12-13 |
Family
ID=6832409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16073/58A Expired GB884369A (en) | 1957-05-17 | 1958-05-19 | Improvements relating to pit-props |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB884369A (en) |
-
1958
- 1958-05-19 GB GB16073/58A patent/GB884369A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB884369A (en) | Improvements relating to pit-props | |
GB854978A (en) | Improvements in supporting elements for mines | |
GB874999A (en) | Hydraulic telescopic pit props | |
GB839600A (en) | Improvements relating to props for use in concrete and the like constructional work | |
GB932312A (en) | Improvements in and relating to mine roof supports or pit props | |
GB851283A (en) | Improvements in pit props | |
GB882801A (en) | Improved extension shoe for a pit-prop | |
FR1200691A (en) | Hydraulic support, such as a mine prop | |
GB930986A (en) | Improvements in or relating to telescopic mine-roof supports | |
GB876797A (en) | Improvements in hydraulic pit props | |
GB825003A (en) | A new or improved removable roof-or wall-supporting device for use in coal mining and like operations | |
GB1002038A (en) | Base plates for pit props | |
GB877345A (en) | A hydraulic pit-prop | |
GB842028A (en) | Improvements in or relating to setting wedges for collapsable props | |
GB756069A (en) | Improvements in or relating to coal face shoring structures | |
GB905479A (en) | Improvements in or relating to collapsable roof and like supports | |
GB882846A (en) | Improvements relating to pit-props and other extensible strut-like supporting devices | |
GB828277A (en) | Improvements in or relating to oil well derricks | |
GB1014842A (en) | A bracing device for face conveyors | |
ES255875A3 (en) | Improvements in the uniĆ³n elements between a tractor and an agricultural tool (Machine-translation by Google Translate, not legally binding) | |
GB789455A (en) | Improved friction locking device for mine roof supports, pit props and the like | |
GB770305A (en) | Improvements in and relating to underground roof supports | |
GB662201A (en) | Improvements in locking arrangements for metal stanchions or pit props | |
GB930996A (en) | Improvements in mine roof supports | |
GB541737A (en) | A new or improved adjustable metal prop primarily for use as a pit prop |