GB296417A - Improvements in mining cartridges - Google Patents
Improvements in mining cartridgesInfo
- Publication number
- GB296417A GB296417A GB25044/28A GB2504428A GB296417A GB 296417 A GB296417 A GB 296417A GB 25044/28 A GB25044/28 A GB 25044/28A GB 2504428 A GB2504428 A GB 2504428A GB 296417 A GB296417 A GB 296417A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bag
- rods
- longitudinal
- armouring
- sections
- 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
- 238000005065 mining Methods 0.000 title abstract 2
- 239000002184 metal Substances 0.000 abstract 3
- 229910052751 metal Inorganic materials 0.000 abstract 3
- 229910000639 Spring steel Inorganic materials 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 238000005422 blasting Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 239000002360 explosive Substances 0.000 abstract 1
- 239000000945 filler Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/10—Devices with expanding elastic casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/20—Tamping cartridges, i.e. cartridges containing tamping material
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Buffer Packaging (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
296,417. Frantz, S. G. Aug. 31, 1927, [Convention date]. Flexible tubes.-A non-explosive cartridge for mining and blasting comprises a tube or bag which is adapted to be expanded by fluid pressure after being inserted in a bore-hole. The bag preferably consists of rubber or the like surrounded by metallic armouring. In the construction shown in Figs. 1, 6, and 9, the ends of a rubber bag 10 are clamped between parts 5, 9 mounted at each end of a conduit member passing through the bag. The conduit conists of two parts 11, 11<a>, telescoping within a cylinder 12, which contains springs pressing the parts 11, 11<a> in opposite directions and thereby tending to keep the rubber bag extended. A series of longitudinal rods 6, forming part of the armouring described below, carry nuts 7 bearing against the parts 5, and by this means the extension of the rubber bag, due to the springs, is limited. Fluid such as air or water is admitted to the expansible bag through a pipe 2, passing through a handle 1 and connected to the conduit member 11. A check valve 15 is provided at the outer end of the exhaust member 11<a>. The armouring shown is mainly built up of sections, each consisting of a flattened metal helix such as 21, extending along the whole length of the rubber bag, and being tapered at each end. Rods 19<a>, preferably of spring steel, pass longitudinally through each helix, and connect each section to the adjacent ones, the ends of these rods passing slidably through the end members 5. The sections are not all of the same width, each section 21 having on either side of it a narrower section 20, whilst between the sections 20, and connected thereto by longitudinal fulcrum rods, are members 24 formed of slotted flattened tubing. The tie-rods 6, mentioned above, pass centrally through each helical section, and, in addition, longitudinal "filler rods " 22 of varying lengths pass through the helices. The rods 22 as well as the rods 6 are preferably welded to the helices. Fig. 6 shows the bag 10 deflated, and shows the positions which the sections of the metal covering assume in longitudinal corrugations moulded in the bag. In the modification shown in Figs. 13, 14, the rubber bag 10<a> is moulded with longitudinal projections 10<b>, and the armouring consists of links 26, joined together by means of parallel rods 27 of spring steel &c., extending throughout the length of the cartridge. The ends of these rods are anchored in a mass of metal 28, such as zinc, which is cast into a recess formed in the head 5 at each end of the cartridge. Two further modified forms of armoured covering are also described, one consisting of intertwined wires attached to the bag, and the other comprising a series of similar flattened helices combined with longitudinal rods. For certain purposes, a metallic armoured covering for the expansible - bag may be dispensed with, the bag being then made of material such as that used for motor tyres.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US216698A US1808162A (en) | 1927-08-31 | 1927-08-31 | Mining cartridge |
Publications (1)
Publication Number | Publication Date |
---|---|
GB296417A true GB296417A (en) | 1929-10-24 |
Family
ID=22808146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25044/28A Expired GB296417A (en) | 1927-08-31 | 1928-08-31 | Improvements in mining cartridges |
Country Status (4)
Country | Link |
---|---|
US (1) | US1808162A (en) |
DE (1) | DE553904C (en) |
FR (1) | FR660727A (en) |
GB (1) | GB296417A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992003635A1 (en) * | 1990-08-17 | 1992-03-05 | Welded Tube Mills Of Australia Pty. Ltd. | Splitting apparatus |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2687179A (en) * | 1948-08-26 | 1954-08-24 | Newton B Dismukes | Means for increasing the subterranean flow into and from wells |
US2934361A (en) * | 1955-03-31 | 1960-04-26 | Gulf Interstate Engineering Co | Fluid pressure operated retaining means for pipe connecting units |
US3353565A (en) * | 1964-09-21 | 1967-11-21 | Swel Plug Inc | Pipe end insert |
US4103618A (en) * | 1974-06-19 | 1978-08-01 | Losinger Ag | Means for extracting a soil anchor consisting of a prestressed steel tendon |
SU1767174A1 (en) * | 1988-05-06 | 1992-10-07 | Горно-Алтайский государственный педагогический институт | Power member |
US4968100A (en) * | 1989-02-06 | 1990-11-06 | Dennis Corneil | Expansion fracture device |
SE531266C2 (en) * | 2006-02-15 | 2009-02-03 | Emstone Ab | Expansion device for directed wedge-shaped cracking of stone, rock, concrete or similar material |
-
1927
- 1927-08-31 US US216698A patent/US1808162A/en not_active Expired - Lifetime
-
1928
- 1928-08-23 FR FR660727D patent/FR660727A/en not_active Expired
- 1928-08-31 GB GB25044/28A patent/GB296417A/en not_active Expired
- 1928-08-31 DE DEF66704D patent/DE553904C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992003635A1 (en) * | 1990-08-17 | 1992-03-05 | Welded Tube Mills Of Australia Pty. Ltd. | Splitting apparatus |
Also Published As
Publication number | Publication date |
---|---|
US1808162A (en) | 1931-06-02 |
DE553904C (en) | 1932-07-02 |
FR660727A (en) | 1929-07-16 |
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