GB396454A - Improvements in or relating to pit props and chock pieces for use in coal mines and the like - Google Patents
Improvements in or relating to pit props and chock pieces for use in coal mines and the likeInfo
- Publication number
- GB396454A GB396454A GB3979/32A GB397932A GB396454A GB 396454 A GB396454 A GB 396454A GB 3979/32 A GB3979/32 A GB 3979/32A GB 397932 A GB397932 A GB 397932A GB 396454 A GB396454 A GB 396454A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cap
- wedge
- prop
- chock
- bolt
- 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
- 239000003245 coal Substances 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 238000000926 separation method Methods 0.000 abstract 2
- 101100521345 Mus musculus Prop1 gene Proteins 0.000 abstract 1
- 241000276498 Pollachius virens Species 0.000 abstract 1
- 108700017836 Prophet of Pit-1 Proteins 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000002023 wood Substances 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
- E21D15/02—Non-telescopic props
- E21D15/06—Non-telescopic props with parts joined by a lock, with or without slight axial adjustability
- E21D15/12—Non-telescopic props with parts joined by a lock, with or without slight axial adjustability with locking devices located near head or foot
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
396,454. Pit props and supports. BRITTON, W., 2, Brompton Terrace, Whickham, MAGEE, S. S., Coley Hill, Westerhope, and WOOD & CO., Ltd., H., Sun Buildings, Collingwood Street, all in Newcastle-on-Tyne. Feb. 10, 1932, No. 3979. [Class 20 (ii).] Pit props or chocks of the type in which a cap is adjusted on the prop by means of a wedge, have a loose plate fitting on the cap so that it can be moved by hammer blows to cause the initial release of the cap. The cap 2 is formed with triangular-shaped side portions and a top flat portion to which is loosely fitted a plate portion 4 with projecting ends, to which blows may be applied. The cap is adjusted by means of a transverse wedge 5 fitting between it and a sloping portion at the end of the prop 1, and a transverse bolt 3 in a slot prevents separation of the cap. In a modification, the end portions 2 may be provided with inward projections to contact a bolt to prevent separation of the cap, and in a further modification, a separate wedge-head may be fitted to the top of the main prop for contact by the wedge. As applied to a chock, Fig. 7, the retaining bolt 14 slides in transverse slots in the bearing iron 10 and in coverplates 11 a, a wedge chock-block 11 being also used for contacting with the wedge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3979/32A GB396454A (en) | 1932-02-10 | 1932-02-10 | Improvements in or relating to pit props and chock pieces for use in coal mines and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3979/32A GB396454A (en) | 1932-02-10 | 1932-02-10 | Improvements in or relating to pit props and chock pieces for use in coal mines and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB396454A true GB396454A (en) | 1933-08-10 |
Family
ID=9768495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3979/32A Expired GB396454A (en) | 1932-02-10 | 1932-02-10 | Improvements in or relating to pit props and chock pieces for use in coal mines and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB396454A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE864238C (en) * | 1949-03-08 | 1953-01-22 | Press Und Stanzwerk Golzheim | Robbery shoe for stamp heads |
| US5149228A (en) * | 1991-06-26 | 1992-09-22 | Hl&H Timber Products (Proprietary) Limited | Prop preloading apparatus |
| US5427476A (en) * | 1992-03-04 | 1995-06-27 | Hl & H Timber Products (Pty) Ltd. | Mine prop headboard |
| US5547317A (en) * | 1992-12-22 | 1996-08-20 | Hl&H Timber Products (Pty) Limited | Mine support system |
| US5658099A (en) * | 1993-09-24 | 1997-08-19 | Hl & H Timber Products (Propreitary) Limited | Prop headboard |
-
1932
- 1932-02-10 GB GB3979/32A patent/GB396454A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE864238C (en) * | 1949-03-08 | 1953-01-22 | Press Und Stanzwerk Golzheim | Robbery shoe for stamp heads |
| US5149228A (en) * | 1991-06-26 | 1992-09-22 | Hl&H Timber Products (Proprietary) Limited | Prop preloading apparatus |
| US5427476A (en) * | 1992-03-04 | 1995-06-27 | Hl & H Timber Products (Pty) Ltd. | Mine prop headboard |
| US5547317A (en) * | 1992-12-22 | 1996-08-20 | Hl&H Timber Products (Pty) Limited | Mine support system |
| US5658099A (en) * | 1993-09-24 | 1997-08-19 | Hl & H Timber Products (Propreitary) Limited | Prop headboard |
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