US1950019A - Detonator - Google Patents
Detonator Download PDFInfo
- Publication number
- US1950019A US1950019A US606303A US60630332A US1950019A US 1950019 A US1950019 A US 1950019A US 606303 A US606303 A US 606303A US 60630332 A US60630332 A US 60630332A US 1950019 A US1950019 A US 1950019A
- Authority
- US
- United States
- Prior art keywords
- cap
- explosive material
- case
- primary
- detonator
- 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
- 239000002360 explosive Substances 0.000 description 41
- 239000000463 material Substances 0.000 description 38
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 239000011796 hollow space material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- MHWLNQBTOIYJJP-UHFFFAOYSA-N mercury difulminate Chemical compound [O-][N+]#C[Hg]C#[N+][O-] MHWLNQBTOIYJJP-UHFFFAOYSA-N 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- USXDFAGDIOXNML-UHFFFAOYSA-N Fulminate Chemical compound [O-][N+]#[C-] USXDFAGDIOXNML-UHFFFAOYSA-N 0.000 description 1
- 241000220283 Weinmannia silvicola Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 copper nitride Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
Classifications
-
- 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
- F42B3/10—Initiators therefor
- F42B3/195—Manufacture
Definitions
- the compound detonators actually used are constituted by a metallic cartridge or ,chased case into which is compressed in one or several times a so called secondary explosive material (generally a nitro derivated from the 4aromatic series) and a metallic cap or washer bored with a hole in it and which is introduced into the cartridge after having placed in this latter and over the secondary explosive material a small quantity of a so called primary explosive material (fulminate of mercury, nitride or lead or the like) the object of which is to start the detonation of the secondary explosive which gives to the detonator its real priming power.
- a so called secondary explosive material generally a nitro derivated from the 4aromatic series
- a metallic cap or washer bored with a hole in it and which is introduced into the cartridge after having placed in this latter and over the secondary explosive material a small quantity of a so called primary explosive material (fulminate of mercury, nitride or lead or the like) the object of which is to start the detonation of the secondary explosive which
- the compression of the primary explosive material in the detonator is made after the cap has been set in its place and by means or a compressing punoli which acts on the cap and indirectly on 'the primary explosive material in which the cap is thrust down by this means.
- an efficient compression oi the primary load is is in tact close to the compressing punch, e. near the bottom ci the cap, that the strongest compression said load ie obtained.; 'the marirriuin den sity Zone of said load is thus limited near the tor, the compression thereol decre s og and more towards the lower eno; primary load.
- Fig. l is a sectional view of the detonator oi the invention.
- Fig. 2 is a sectional view of the separated members of the detonator.
- Fig. 3 is a further sectional vievtT ci the detoriator0 Figs. Li and 5 Vare sectional views, respectively, of the two separated or joined members of the detonator loaded with intermediate sensibility explosive material.
- Figs. il and 7 show modifications of the cap of the detonator.
- the minimum density zone of the primary explosive material 4 that the succession of the densities, such as it isA in the present detonators, is not a rational one.
- the primary load is compressed inside cap 2 with its maximum density in 4 near the open part of the cap where the compressing punch acts.
- Another advantage of the invention is the fact that the very high pressure of the primary explosive material decreases its capillarity and makes it impossible for the moisture to penetrate by the side of the cap.
- the greater coherency thus obtained prevents any loss of primary explosive material throughthe hole in the cap either during the different manipulations of the detonator, during'the manufacture in the works, or during the transport and use thereof.
- caps provided in their bottom ol a hollowspace 6 made by punching the bottom 2 of cap 2 .( Figure 6) or made inside the thickness of the bottom wall of cap 2 ( Figure 7); said hollow space being used for placing a relay load, thus placed between the lighting means of the detonator and the primary explosive material 4, in order to make easier the lighting or to prime the primary explosive material, if necessary.
- this .latter shall be itself put and compressed in said hollow space 6'under a very much reduced volume with reference to'an ordinary volume.
- a process for loading detonators which consists in compressing a primary explosive material in a cap, then compressing in said cap an explosive material having high power and a sensibility to impact intermediate between the primary explosive material and the secondary explosive material, separately loading the secondary explosive material in a case and forcingsaid cap into said case.
- a detonator comprising a case, a secondary explosive material compressed in said case, a cap within vsaid case, 'a primary explosive material partly filling said cap, and in said cap and in contact with the zone of maximum density of the primary explosive material an explosive having power and sensibility to impact intermediate be'- tween the primary and the secondary material.
- a detonator comprising a case, a secondary explosive material compressed in said case, a cap within said case, a primary explosive material compressed in said cap and in, contact by its zone of maximum density with the secondary explosive material Within the case, a hollow provided in said cap, and primary explosive'material within said hollow.
- detonators which consists in compressing a primary explosive material in a cap, separately loading a secondary explosive material in a case, then 'compressing in one of said caps or cases a secondary explosive material of higher power and sensibility in posi tion to llie between and in contact with the primary and secondary materials in the finished detonators, and forcing vsaid cap into said case.
- a detonator comprising a case, a secondary explosive material compressed in said case, a cap within said case, a primary explosive material compressed in said cap and in contact by its zone of maximum density with the secondary explosive material within the case, a hollow provided in said cap and a relay load in said hollow and between the firing means of the detonator and the primary explosive material.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR642465X | 1931-04-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1950019A true US1950019A (en) | 1934-03-06 |
Family
ID=8998824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US606303A Expired - Lifetime US1950019A (en) | 1931-04-29 | 1932-04-20 | Detonator |
Country Status (6)
Country | Link |
---|---|
US (1) | US1950019A (fr) |
BE (1) | BE381075A (fr) |
DE (1) | DE642465C (fr) |
FR (1) | FR732263A (fr) |
GB (1) | GB387545A (fr) |
NL (1) | NL34459C (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2420201A (en) * | 1942-03-07 | 1947-05-06 | Olin Ind Inc | Blasting cap |
US2517763A (en) * | 1946-04-10 | 1950-08-08 | Hercules Powder Co Ltd | Blasting cap |
US2541334A (en) * | 1944-05-20 | 1951-02-13 | Atlas Powder Co | Explosive assembly and method of making it |
US2617326A (en) * | 1943-06-16 | 1952-11-11 | Ici Ltd | Explosive primer |
US4170178A (en) * | 1976-12-21 | 1979-10-09 | Werkzeugmaschinenfabrik Oerlikon-Buhrle | Detonator containing octogen crystals for projectiles and method of manufacturing the same |
US4625648A (en) * | 1983-10-01 | 1986-12-02 | Rheinmetall Gmbh | Projectile propelling charge and method of manufacture thereof |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1187531B (de) * | 1961-09-13 | 1965-02-18 | Oerlikon Buehrle Ag | Vorrichtung fuer gerichtete Zuendung von Sprengladungen |
-
0
- NL NL34459D patent/NL34459C/xx active
- BE BE381075D patent/BE381075A/xx unknown
-
1931
- 1931-04-29 FR FR732263D patent/FR732263A/fr not_active Expired
-
1932
- 1932-01-30 DE DEB154150D patent/DE642465C/de not_active Expired
- 1932-04-13 GB GB10634/32A patent/GB387545A/en not_active Expired
- 1932-04-20 US US606303A patent/US1950019A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2420201A (en) * | 1942-03-07 | 1947-05-06 | Olin Ind Inc | Blasting cap |
US2617326A (en) * | 1943-06-16 | 1952-11-11 | Ici Ltd | Explosive primer |
US2541334A (en) * | 1944-05-20 | 1951-02-13 | Atlas Powder Co | Explosive assembly and method of making it |
US2517763A (en) * | 1946-04-10 | 1950-08-08 | Hercules Powder Co Ltd | Blasting cap |
US4170178A (en) * | 1976-12-21 | 1979-10-09 | Werkzeugmaschinenfabrik Oerlikon-Buhrle | Detonator containing octogen crystals for projectiles and method of manufacturing the same |
US4625648A (en) * | 1983-10-01 | 1986-12-02 | Rheinmetall Gmbh | Projectile propelling charge and method of manufacture thereof |
Also Published As
Publication number | Publication date |
---|---|
DE642465C (de) | 1937-03-05 |
GB387545A (en) | 1933-02-09 |
FR732263A (fr) | 1932-09-15 |
BE381075A (fr) | |
NL34459C (fr) |
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