US3112701A - Disc for upgrading work of explosives - Google Patents
Disc for upgrading work of explosives Download PDFInfo
- Publication number
- US3112701A US3112701A US48986A US4898660A US3112701A US 3112701 A US3112701 A US 3112701A US 48986 A US48986 A US 48986A US 4898660 A US4898660 A US 4898660A US 3112701 A US3112701 A US 3112701A
- Authority
- US
- United States
- Prior art keywords
- explosive
- discs
- rim
- notch
- saucer
- 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 - Lifetime
Links
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
-
- 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
- F42D1/18—Plugs for boreholes
Definitions
- Still another object of the present invention is to provide a device for upgrading the work obtainable from ordinarily low sensitivity bulk explosives which permits ready admission of such explosives into bore holes around and in contact with said device.
- the device of the instant invention useful in effecting the upgrading of explosive work of a given explosive in cylindrical form is a substantially circular member, preferably having a slight curvature so as to be essentially saucer-shaped and defining openings within the wall of said member.
- FIGURE 1 presents a lateral view of one embodiment of a circular disc, partially cutaway.
- FIGURE 2 shows a top view of the disc of FIGURE 1.
- FIGURE 3 shows an explosive device which comprises in combination a cylindrical explosive and saucer shaped discs confined in a bore hole.
- the circular substantially saucer-shaped disc 11 has a thick outer rim 12. having a notch 13 on its top side 14 and a second notch 15 on the bottom side 16. These notches are so designed that they permit self-stacking of discs 11 one on top of another by fitting notch 15 on the bottom of one disc into notch 13 on the top of another disc.
- a sloping saucer-shaped wall or extension 17 leads inwardly from the inside wall 18 of the rim 12 and connects this rim 12 with the rim 19 of a central circular reinforcing member 2%) in the shape of a bottom of a. saucer and defining a center opening 2.1.
- the extension 17 further defines a series of openings 22; spaced at equal intervals around the saucer shaped wall 17. Each opening 22 extends in length over almost the entire section of the wall 17 between the rim .12 and the reinforcing member 20 and is defined in width by the extent of a twenty degree angle extending outward [from the center axis of the opening 21.
- the circular center opening 21 is designed to accommodate an explosive detonator, such as a shaped charge.
- an explosive detonator such as a shaped charge.
- this opening will hold the shaped charge so that its principal axis of detonation is normal to the plane of the diameter of this opening.
- the discs can be made from a variety of conducting and nonconducting materials but preferably will be fabricated from a light metal such as magnesium, aluminum, magnesium alloy or an aluminum alloy.
- the devices are fabricated by any of a. variety of means; e.g., sand casting, stamping, deep drawing, permanent mold casting, die casting, forging, etc.
- a particularly useful and commercially acceptable disc is prepared by die casting utilizing, for example, ASI M designated AZ91B magnesium alloy (nominal composition 9 percent aluminum, 0.15 percent manganese, 0.7 percent zinc, balance magnesium) or the ASIM designated SO84 aluminum alloy (nominal composition 8-9 percent silicon, 3.5 percent copper, balance aluminum).
- the discs themselves are prepared having an outside diameter from about 3 inches to about 16 inches, but for most commercial blasting the discs will be from about 6 to about '12 inches in outside diameter so as to be accommodated by the corresponding diametered b o-re holes.
- the thickness of the outer rim 12 and rim 1-9 of the inner circular member 2% are such so as to give dimensional stability to the disc while the extension 17 joining these can be of a minimum wall thickness as is consistent with non-premium casting costs.
- a comparative set of tests was run in a series of 9 inch diameter commercial bore holes drilled in taco-nite.
- One set of holes was loaded to a depth of about 30 feet with coarse metal chips (50-50 magnesium and aluminum) and had perforated saucer-like discs placed laterally at about 3 foot intervals up through the bore hole.
- a shaped charge initiator, armed with P-rimacord, was placed in the center opening of the top disc before this was lowered into the bore hole.
- a liquid ammoniacal solution of ammonium nitrate (containing on a weight basis 4-9 percent water, 25-3 0 percent ammonia, balance ammonium nitrate) was poured into the bore hole. This solution percolated through the metal, passing through the openings of the discs and filled the bore hole to the lateral movement outward from the bench face of readily shovelable rock was produced.
- An explosive device providing upgraded explosive 3,112,701 Patented Dec. 3., 1963 work which comprises in combination a cylindrical explosive having positioned therein at intervals laterally along the length of said explosive electron conducting substantially saucer-shaped discs and a confining structure for said explosive and discs, said discs having a thick continuous outer rim, said rim having a notch on the top and a notch on the bottom, said notch on the top of said rim of said saucer-shaped disc fitting said notch on the bottom of another of said saucer-shaped discs whereby said discs can be self-stacked, a thin wall extending inwardly from said continuous outer rim to the rim of a central circular reinforcing member, said thin Wall defining a series of openings spaced at equal intervals around said wall and extending in length over almost the entire section of the thin wall between said continuous outer rim and the rim of said central circular reinforcing member and said circular reinforcing member defining a center opening.
- An explosive device providing upgraded explosive work from low sensitivity bulk explosives confined in a bore hole which comprises in combination a bore hole, a bulk explosive in cylindrical form of substantially the same diameter as said bore hole and light metal substantially saucer-shaped discs, said discs being positioned laterally within said explosive at intervals along the length of said cylindrical explosive, said discs being substantially of the same diameter as said cylindrical explosive, and said cylindrical explosive with said discs being positioned in said bore hole, said discs having a continuous, thick outer rim, said rim having a notch on the top and a notch on the bottom, said notch on the top of said rim of said saucer-sharper disc fitting said notch on the bottom of another of said saucer-shaped discs whereby said discs can be self-stacked, a thin Wall extending inwardly from said continuous outer rim to the rim of a central circular reinforcing member, said thin wall defining a series of openings spaced at equal intervals around said wall, each of said openings extending in length over almost the entire section
- each of said light metal discs is a die cast magnesium alloy article and the center opening of the circular reinforcing member accommodates a shaped charge.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL127579D NL127579C (de) | 1960-08-11 | ||
NL257626D NL257626A (de) | 1960-08-11 | ||
US48986A US3112701A (en) | 1960-08-11 | 1960-08-11 | Disc for upgrading work of explosives |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US49017A US3091177A (en) | 1960-08-11 | 1960-08-11 | Method for loading a bore hole |
US48986A US3112701A (en) | 1960-08-11 | 1960-08-11 | Disc for upgrading work of explosives |
Publications (1)
Publication Number | Publication Date |
---|---|
US3112701A true US3112701A (en) | 1963-12-03 |
Family
ID=21957643
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US48986A Expired - Lifetime US3112701A (en) | 1960-08-11 | 1960-08-11 | Disc for upgrading work of explosives |
US49017A Expired - Lifetime US3091177A (en) | 1960-08-11 | 1960-08-11 | Method for loading a bore hole |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US49017A Expired - Lifetime US3091177A (en) | 1960-08-11 | 1960-08-11 | Method for loading a bore hole |
Country Status (6)
Country | Link |
---|---|
US (2) | US3112701A (de) |
BE (1) | BE596790A (de) |
DE (1) | DE1188993B (de) |
FR (1) | FR1289726A (de) |
GB (1) | GB973751A (de) |
NL (1) | NL264205A (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3173368A (en) * | 1962-07-18 | 1965-03-16 | Trojan Powder Co | Tamping plug for boreholes |
US3377909A (en) * | 1967-09-29 | 1968-04-16 | Dow Chemical Co | Explosive composition and method |
US3610150A (en) * | 1968-01-01 | 1971-10-05 | Ici Ltd | Blasting method |
US4342261A (en) * | 1980-06-23 | 1982-08-03 | The United States Of America As Represented By The Secretary Of The Army | Shaped charge warhead with mechanical means for preventing rotation |
US4510870A (en) * | 1981-07-27 | 1985-04-16 | The United States Of America As Represented By The Secretary Of The Army | Charge liner construction and method |
US20040000514A1 (en) * | 2002-06-19 | 2004-01-01 | Helmuth Gabl | Filter/screening disc and process for manufacturing this kind of disc |
RU176154U1 (ru) * | 2017-06-13 | 2018-01-10 | Алексей Николаевич Шустов | Скважинное запирающее устройство |
RU2649201C1 (ru) * | 2017-02-13 | 2018-03-30 | Алексей Николаевич Шустов | Скважинное запирающее устройство |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3474729A (en) * | 1968-02-21 | 1969-10-28 | Gulf Oil Corp | Ammonium nitrate explosive package and three-stage method of initiation |
ZW13181A1 (en) * | 1980-07-29 | 1983-01-26 | Canadian Ind | Borehole charging method |
FR2581446B1 (fr) * | 1985-05-02 | 1987-10-02 | Nielli Philippe | Procede d'explosif a pieces modulaires permettant la creation controlee de secousses et d'ondes de choc repetitives a travers les gaz, les airs, les liquides, les solides pour emplois militaires et civils |
US5431104A (en) * | 1993-06-14 | 1995-07-11 | Barker; James M. | Exploding foil initiator using a thermally stable secondary explosive |
AUPQ591000A0 (en) | 2000-02-29 | 2000-03-23 | Rockmin Pty Ltd | Cartridge shell and cartridge for blast holes and method of use |
AU2003200490B2 (en) * | 2002-02-20 | 2008-05-08 | Rocktek Ltd. | Apparatus and method for fracturing a hard material |
WO2005071349A1 (en) * | 2004-01-26 | 2005-08-04 | Nxco International Limited | Rock breaking cartridge and use thereof |
CA2944857C (en) * | 2014-05-17 | 2018-12-11 | Halliburton Energy Services, Inc. | Establishing communication downhole between wellbores |
CN112696999B (zh) * | 2020-12-30 | 2022-11-25 | 山东科技大学 | 一种用于深孔***的装药装置及装药方法 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1767182A (en) * | 1928-01-12 | 1930-06-24 | Lisse Leopold | Blasting cartridge with cover and process of production |
US2026454A (en) * | 1933-01-10 | 1935-12-31 | Seidel & Naumann Ag | Locking disk |
US2245751A (en) * | 1938-09-26 | 1941-06-17 | Gen Motors Corp | Fastening device |
US2247169A (en) * | 1937-12-11 | 1941-06-24 | Heitzman Safety Blasting Plug | Blasting shell for surface blasting |
US2448648A (en) * | 1944-09-08 | 1948-09-07 | Clinton L Stockstill | Solar water heater |
US2586801A (en) * | 1942-08-27 | 1952-02-26 | Us Sec War | Incendiary bomb |
US2760434A (en) * | 1952-01-10 | 1956-08-28 | Olin Mathieson | Explosive |
US2837996A (en) * | 1954-05-04 | 1958-06-10 | Seismograph Service Corp | Explosive charge |
US2926604A (en) * | 1952-06-30 | 1960-03-01 | Norman A Macleod | Explosion propagating device |
US3016831A (en) * | 1958-10-02 | 1962-01-16 | Du Pont | Surface wave generator |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2168030A (en) * | 1937-01-12 | 1939-08-01 | Du Pont | Explosive composition |
DE851474C (de) * | 1950-09-22 | 1952-10-06 | Robert Dipl-Ing Meyer | Sprengverfahren, insbesondere fuer bergbauliche Zwecke |
DE919457C (de) * | 1951-06-05 | 1954-10-21 | Trentesaux Toulemonde Sa | Sprengpatrone |
-
0
- NL NL264205D patent/NL264205A/xx unknown
-
1960
- 1960-08-11 US US48986A patent/US3112701A/en not_active Expired - Lifetime
- 1960-08-11 US US49017A patent/US3091177A/en not_active Expired - Lifetime
- 1960-11-04 BE BE596790A patent/BE596790A/fr unknown
-
1961
- 1961-04-10 DE DED35824A patent/DE1188993B/de active Pending
- 1961-04-14 GB GB13487/61A patent/GB973751A/en not_active Expired
- 1961-04-20 FR FR859374A patent/FR1289726A/fr not_active Expired
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1767182A (en) * | 1928-01-12 | 1930-06-24 | Lisse Leopold | Blasting cartridge with cover and process of production |
US2026454A (en) * | 1933-01-10 | 1935-12-31 | Seidel & Naumann Ag | Locking disk |
US2247169A (en) * | 1937-12-11 | 1941-06-24 | Heitzman Safety Blasting Plug | Blasting shell for surface blasting |
US2245751A (en) * | 1938-09-26 | 1941-06-17 | Gen Motors Corp | Fastening device |
US2586801A (en) * | 1942-08-27 | 1952-02-26 | Us Sec War | Incendiary bomb |
US2448648A (en) * | 1944-09-08 | 1948-09-07 | Clinton L Stockstill | Solar water heater |
US2760434A (en) * | 1952-01-10 | 1956-08-28 | Olin Mathieson | Explosive |
US2926604A (en) * | 1952-06-30 | 1960-03-01 | Norman A Macleod | Explosion propagating device |
US2837996A (en) * | 1954-05-04 | 1958-06-10 | Seismograph Service Corp | Explosive charge |
US3016831A (en) * | 1958-10-02 | 1962-01-16 | Du Pont | Surface wave generator |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3173368A (en) * | 1962-07-18 | 1965-03-16 | Trojan Powder Co | Tamping plug for boreholes |
US3377909A (en) * | 1967-09-29 | 1968-04-16 | Dow Chemical Co | Explosive composition and method |
US3610150A (en) * | 1968-01-01 | 1971-10-05 | Ici Ltd | Blasting method |
US4342261A (en) * | 1980-06-23 | 1982-08-03 | The United States Of America As Represented By The Secretary Of The Army | Shaped charge warhead with mechanical means for preventing rotation |
US4510870A (en) * | 1981-07-27 | 1985-04-16 | The United States Of America As Represented By The Secretary Of The Army | Charge liner construction and method |
US20040000514A1 (en) * | 2002-06-19 | 2004-01-01 | Helmuth Gabl | Filter/screening disc and process for manufacturing this kind of disc |
RU2649201C1 (ru) * | 2017-02-13 | 2018-03-30 | Алексей Николаевич Шустов | Скважинное запирающее устройство |
RU176154U1 (ru) * | 2017-06-13 | 2018-01-10 | Алексей Николаевич Шустов | Скважинное запирающее устройство |
Also Published As
Publication number | Publication date |
---|---|
US3091177A (en) | 1963-05-28 |
GB973751A (en) | 1964-10-28 |
BE596790A (fr) | 1961-05-04 |
FR1289726A (fr) | 1962-04-06 |
DE1188993B (de) | 1965-03-11 |
NL264205A (de) |
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