GB719699A - An improved adjustable strut for use in connection with the timbering of trenches and for other purposes - Google Patents
An improved adjustable strut for use in connection with the timbering of trenches and for other purposesInfo
- Publication number
- GB719699A GB719699A GB11364/51A GB1136451A GB719699A GB 719699 A GB719699 A GB 719699A GB 11364/51 A GB11364/51 A GB 11364/51A GB 1136451 A GB1136451 A GB 1136451A GB 719699 A GB719699 A GB 719699A
- Authority
- GB
- United Kingdom
- Prior art keywords
- trenches
- strut
- channel
- pin
- holes
- 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
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
- E02D17/083—Shoring struts
-
- 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
-
- 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
- E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
-
- 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
- E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
- E04G25/063—Shores or struts; Chocks telescopic with parts held together by positive means by pins with safety devices to avoid the accidental loss or unlocking of the pin, e.g. chains attaching the pin to the prop
-
- 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
- E21D15/08—Non-telescopic props with parts joined by a lock, with or without slight axial adjustability with toggle joint connection
-
- 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
- E21D15/14—Telescopic props
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/20—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with pawl, pin, cross-piece, or the like engaging with ratchet teeth, notches, holes, or the like, spaced apart at intervals
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
719,699. Struts for trenches and mines. BRITISH INSULATED CALLENDER'S CONSTRUCTION CO., Ltd. May 15, 1952 [May 15, 1951; Jan. 16, 1952; Jan. 16, 1952], Nos. 11364/51, 1285/52 and 1286/52. Class 20 (2) A strut for supporting the walls of trenches or roofs of tunnels or mines comprises one member 7, Fig. 1, pivoted on a pin 9 in the other channel section member 3 and adapted to be swung into alignment with and locked in the channel member by a pin 13. A number of holes 6 are provided in the member 3 for the pin 9 and member 7 has two or more holes at right angles or at other angles and at a smaller pitch than the holes 6 to allow for a fine adjustment of the length of the strut. The member 3 is reinforced by a channel member 10. In a modification the outer member comprises two side walls joined at one end by an end wall and at the other end by a bridge piece which forms an abutment for the inner member. The side walls may have inwardly or outwardly turned flanges or be joined across the top. In a further modification the outer member 36, Fig. 12, is of rectangular channel' section and the inner member 35 of rectangular section and has a catch 38 at one end to engage one of a series of slots 37 in the outer member. A second catch 39a on the member 35 spaced from the first catch half the pitch between the slots 37 allows of close adjustment of the length of the strut. A link 40, Fig. 11, holds the members of the struts in alignment and is maintained in position by stops 42.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB11364/51A GB719699A (en) | 1951-05-15 | 1951-05-15 | An improved adjustable strut for use in connection with the timbering of trenches and for other purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB11364/51A GB719699A (en) | 1951-05-15 | 1951-05-15 | An improved adjustable strut for use in connection with the timbering of trenches and for other purposes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB719699A true GB719699A (en) | 1954-12-08 |
Family
ID=9984879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11364/51A Expired GB719699A (en) | 1951-05-15 | 1951-05-15 | An improved adjustable strut for use in connection with the timbering of trenches and for other purposes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB719699A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3612463A (en) * | 1969-02-06 | 1971-10-12 | Andrew Grant | Wedging device for pallet loads |
| US4249578A (en) * | 1979-05-29 | 1981-02-10 | Freeman James D | Length-adjustable stiffener for fiberboard ducts |
| WO1992001120A1 (en) * | 1990-07-10 | 1992-01-23 | James William Walsh | A strut |
| US5123785A (en) * | 1990-10-29 | 1992-06-23 | Orfei Louis A | Trench-shoring appartus |
| WO2014018804A1 (en) * | 2012-07-25 | 2014-01-30 | Tarpy Paul | Duct stiffening device |
-
1951
- 1951-05-15 GB GB11364/51A patent/GB719699A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3612463A (en) * | 1969-02-06 | 1971-10-12 | Andrew Grant | Wedging device for pallet loads |
| US4249578A (en) * | 1979-05-29 | 1981-02-10 | Freeman James D | Length-adjustable stiffener for fiberboard ducts |
| WO1992001120A1 (en) * | 1990-07-10 | 1992-01-23 | James William Walsh | A strut |
| US5123785A (en) * | 1990-10-29 | 1992-06-23 | Orfei Louis A | Trench-shoring appartus |
| WO2014018804A1 (en) * | 2012-07-25 | 2014-01-30 | Tarpy Paul | Duct stiffening device |
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