US2261195A - Explosive composition for detonating rivets - Google Patents
Explosive composition for detonating rivets Download PDFInfo
- Publication number
- US2261195A US2261195A US277322A US27732239A US2261195A US 2261195 A US2261195 A US 2261195A US 277322 A US277322 A US 277322A US 27732239 A US27732239 A US 27732239A US 2261195 A US2261195 A US 2261195A
- Authority
- US
- United States
- Prior art keywords
- metal
- rivets
- guanyl
- rivet
- tetrazene
- 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 title description 32
- 239000000203 mixture Substances 0.000 title description 17
- 229910052751 metal Inorganic materials 0.000 description 25
- 239000002184 metal Substances 0.000 description 25
- 238000004880 explosion Methods 0.000 description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 10
- 229910002651 NO3 Inorganic materials 0.000 description 10
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 10
- 239000000843 powder Substances 0.000 description 10
- POKUYZQWMNGFQV-DHZHZOJOSA-N (1e)-2-[2-(diaminomethylideneamino)hydrazinyl]-1-(oxohydrazinylidene)guanidine Chemical compound NC(N)=NNN\N=C(\N)/N=N/N=O POKUYZQWMNGFQV-DHZHZOJOSA-N 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 150000004655 tetrazenes Chemical class 0.000 description 7
- 150000001540 azides Chemical class 0.000 description 6
- 238000005474 detonation Methods 0.000 description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 6
- DGMJZELBSFOPHH-KVTDHHQDSA-N mannite hexanitrate Chemical compound [O-][N+](=O)OC[C@@H](O[N+]([O-])=O)[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)CO[N+]([O-])=O DGMJZELBSFOPHH-KVTDHHQDSA-N 0.000 description 6
- 229950003934 mannite hexanitrate Drugs 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 150000001247 metal acetylides Chemical class 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000003085 diluting agent Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 229910052976 metal sulfide Inorganic materials 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- WULYEPBSNYJVFB-UHFFFAOYSA-N Cl(=O)(=O)(=O)O.[N+](=O)([O-])C1C(C=CC=C1)=[N+]=[N-] Chemical compound Cl(=O)(=O)(=O)O.[N+](=O)([O-])C1C(C=CC=C1)=[N+]=[N-] WULYEPBSNYJVFB-UHFFFAOYSA-N 0.000 description 1
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 1
- 241000360590 Erythrites Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical class OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- JKYMSKUDZIJFKI-UHFFFAOYSA-N cyanuric triazide Chemical compound [N-]=[N+]=NC1=NC(N=[N+]=[N-])=NC(N=[N+]=[N-])=N1 JKYMSKUDZIJFKI-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003701 inert diluent Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/04—Rivets; Spigots or the like fastened by riveting
- F16B19/08—Hollow rivets; Multi-part rivets
- F16B19/12—Hollow rivets; Multi-part rivets fastened by fluid pressure, including by explosion
- F16B19/125—Hollow rivets; Multi-part rivets fastened by fluid pressure, including by explosion fastened by explosion
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B25/00—Compositions containing a nitrated organic compound
- C06B25/34—Compositions containing a nitrated organic compound the compound being a nitrated acyclic, alicyclic or heterocyclic amine
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B27/00—Compositions containing a metal, boron, silicon, selenium or tellurium or mixtures, intercompounds or hydrides thereof, and hydrocarbons or halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
- C06B33/08—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide with a nitrated organic compound
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B43/00—Compositions characterised by explosive or thermic constituents not provided for in groups C06B25/00 - C06B41/00
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C7/00—Non-electric detonators; Blasting caps; Primers
Definitions
- compositions of metal-free initial explosives or of explosives which contain the same metal as that of which the material to be riveted consists were compositions of metal-free initial explosives or of explosives which contain the same metal as that of which the material to be riveted consists.
- the known purely organic initial explosives are quite out of the questionfor this largescale use, since they are far toosensitive and partly also are not stable to'storage, for example, nitrodiazobenzene perchlorate and cyanuric triazide.
- the mannite hexanitrate is mixed with about 30% tetrazene, then on heating in the rivet this mixture detonates' with the high starting velocity'peculiar to initial explosives and with high shattering power. Peculiarly enough, this action occurs only on uniformly heating the whole quantity of explosive in the rivet and not with flame and spark ignition, which at best leads only to a burning away of this explosive mixture. This property is very remarkable and is fundamentally important from a technical point of view, since this composition affords a great degree of safety from accidental explosions, both in the case of the loose composition as well as in the'case of the finally charged rivets.
- silver, copper and aluminium powder be raised up to about of the mixture, without the detonation sensitivity and the high starting velocity being eral, initiated at one end and does not travel layerwise through-the explosive charge but takes place practically at the same moment at all points of the charge, there is an increase in the "starting" velocity and a shortening in the time of detonation.
- the braking eiTect of large quantities of inert substance is completely compensated for by this new eflect and the action of the detonation is made still more uniform by the increased decomposition velocity.
- mannite hexanitrate may also be replaced by the nitrates of tetrabasic and pentabasic alcohols, e. g. by erythrite tetranitrate.
- the present invention therefore represents a noteworthy advance over the pure initial compositions sensitive to flame, impact and friction heretofore proposed and used.
- an explosive charge comprising a nitrate of a solid polyvalent alcohol containing between 4 and 6 hydroxy groups, and guanylmitrosamino guanyl-tetrazene.
- an explosive charge comprising a nitrate of a tetravalent alcohol, and guanyl-nitrosamino guanyl-tetrazene.
- an explosive charge comprising the nitrate of a pentavalent alcohol, and guanyl-nitrosamino guanyl-tetrazene.
- an explosive charge comprising the nitrate of a hexavalent alcohol, and guanyl-nitrosamino 'guanyl-tetrazene.
- an explosive charge comprising mannite hexanitrate, and guanyl-nitrosamino guanyl-tetrazene.
- an explosive charge comprising the nitrate of a solid polyvalent alcohol, guanyl-nitrosamino guanyl-tetrazene, and a powder substance of good thermal conductivity selected from the class consisting of metals, metal carbides, metal sulfides, metal sulfites, and metal oxides.
- an explosive charge comprisingmannitehexanitrate,guanyl-nitrosamino guanyl-tetrazene, and a powder substance of good thermal conductivity selected from the class consisting of metals, metal carbides, metal sulfides, metal sulfites, and metal oxides.
- an explosive charge comprising mannite hexanitrate, guanyl-nitrosamino guanyl-tetrazene, and a metal powder.
- an explosive charge comprising mannite hexanitrate, guanyl-nitrosamino guanyl-tetrazene; and aluminum powder.
- an explosive charge comprising a nitrate of apolyhydroxy alcohol containing between 4 and 6 hydroxy groups a finely divided diluent of high thermal conductivity selected from the class consisting of metals, metal carbides, metal sulfides, metal sulfites, and metal oxides, and tetrazene.
- an explosive charge comprising a. nitrate of a polyhydroxy alcohol containing between 4 and 6 hydroxy groups, tetrazene, and a finely divided metal.
- an explosive charge comprising a nitrate of a polyhydroxy alcohol containing between 4 and 6 hydroxy'groups, tetrazene, and finely divided silver.
- an explosive charge comprising a nitrate of a polyhydroxy alcohol containing between 4 and 6 hydroxy groups, tetrazene, and finely divided copper.
- an explosive charge eomprisinga nitrate of a polyhydroxy alcohol containing between 4 and 6 hydroxy groups, tetrazene, and finely divided aluminum.
- HEINZ GAWLICK HANS RATHSBURG.
Description
Patented Nov. 4, 1941 EXPLOSIVE COMPOSITION FOR DETONATING RIVETS Edmund von Herz, C'ologne-Dellbruck, Heinz Gawlick, Furth, Bavaria, and Hans Rathsburg, Stadeln uber Nuremberg, Germany, assignors, by mesne assignments, to E. I. 'du Pont de Nemours & 00., a corporation of Delaware No Drawing. Application June 3, 1939, Serial No. 277,322. In Germany July 16, 1938 14 Claims. (01. "52-4) As a charge for detonating rivets, the ignition of which -is brought about by indirect or direct heating of the rivet .to' the explosion temperature of the charged explosive, it has been proposed to use heavy metal azides the high explosion point of ,which is reduced to about 150 by addition of explosives which explode at low temperature.
Mixtures of lead azide and guanyl-nitrosaminoguanyltetrazene, briefly referred to as tetrazene, are particularly eificient and readily prepared preparations in accordance with this proposal.
In view of the fact that the, deposit of metallic lead arising in the detonation of lead azide leads in the case of light metal rivetings to high electro-corrosion, detonating charges which are poor. in lead azide and the lead azide content of which amounts only to about 18-20%, have already been prepared. The lead azide portion which is omitted is in'this case replaced by a mixture of highly shattering nitro-bodies or esters and inert diluents.
Still more suitable, however, were compositions of metal-free initial explosives or of explosives which contain the same metal as that of which the material to be riveted consists. Unfortunately, the known purely organic initial explosives are quite out of the questionfor this largescale use, since they are far toosensitive and partly also are not stable to'storage, for example, nitrodiazobenzene perchlorate and cyanuric triazide.
It has now been found that mixtures of mannite hexanitrate and'tetrazen'e on rapid heating detonate with a high starting velocity (i. e. a
high velocity of the chemical action leading to.
- If, on the other hand, the mannite hexanitrate is mixed with about 30% tetrazene, then on heating in the rivet this mixture detonates' with the high starting velocity'peculiar to initial explosives and with high shattering power. Peculiarly enough, this action occurs only on uniformly heating the whole quantity of explosive in the rivet and not with flame and spark ignition, which at best leads only to a burning away of this explosive mixture. This property is very remarkable and is fundamentally important from a technical point of view, since this composition affords a great degree of safety from accidental explosions, both in the case of the loose composition as well as in the'case of the finally charged rivets.
The mixture in question, at highcharging densities, i. e. when pressed under high pressure,
possesses such a brisance that it may be used only for very strong-walled rivets. In the rivets ordinarily used, having relatively thin Wall strength of the explosive chamber, the charging density should not exceed about 1, on account of the danger of complete destruction of the rivet. Lo'w charging densities, moreover, mean a charge pressed only slightly, which, as the result of its lack of compactness, tends to become detached and to crumble out; therefore the safety in transportation and use of such explosive rivets is greatly impaired. Such a lightly pressed charge of low charging density, therefore, makes a special covering of the rivet opening by a strong layer of lacquer, or the like,'necessary. Since such measures make the manufacture expensive, it is more expedient to dilute the explosive charge so greatly by the addition of inert materials and to diminish its energy to such an extent thereby that even high charging densities'oannot lead to an excessive, destructive brisance. In such explosive rivets, with charges of high loading density, the explosive charge is so strongly pressed that loosening and falling out, even without a protective covering, is entirely outof the question. This dilution, however, cannot be efiected as when using pronounced initial explosives, with any desired pulverulent substances, e. g. kieselguhr, since such substances, even in the smallest quantity, prevent the development of detonation.
On the other hand, it has been found surprisingly enough that this necessary dilution is to be carried out more particularly with metal powders and with powdered substances of good thermal conductivity, such as, for example, metal carbides, silicides, sulphites, oxides, etc. The detonation sensitivity of the mannite hexanitratetetrazene mixture is not only in no way hindered by this addition but,quite on the contrary, is enhanced to a considerable extent, apparent from the great uniformity of, the expansion or splaying results. It is certainly remarkable that the proportion of diluent can, in the case of satisfactorily conducting metal powders, e. g. silver, copper and aluminium powder, be raised up to about of the mixture, without the detonation sensitivity and the high starting velocity being eral, initiated at one end and does not travel layerwise through-the explosive charge but takes place practically at the same moment at all points of the charge, there is an increase in the "starting" velocity and a shortening in the time of detonation. The braking eiTect of large quantities of inert substance is completely compensated for by this new eflect and the action of the detonation is made still more uniform by the increased decomposition velocity.
,In the case of rivetings of metal pieces which are sensitive to corrosion, the diluent must be so chosen that the explosion residues can in no circumstances lead to an electrical difference in voltage wtih the metal coated therewith, since the current fiow set up under the action of moisture may lead to severe corrosion. Asdilut-' ing agent, therefore, for the most part always the metal powder or the metal compound which corresponds to the rivet metal, or to the metal being riveted, will be employed. In the case of rivetings of light metals, e. g. in aircraft construction, aluminium powder will exclusively be used.
. Example of a mixture for light metal rivets The mannite hexanitrate may also be replaced by the nitrates of tetrabasic and pentabasic alcohols, e. g. by erythrite tetranitrate.
A particular advantage of these explosive compositions is the insensitivity towards mechanical influences brought about by the large quantity of metal powder which makes the charging and pressing of the rivets filled therewith practically free from danger, I
-These mixtures containing metal powder also areignited by flame only with very great difilculty and then they burn away harmlessly. I
The present invention therefore represents a noteworthy advance over the pure initial compositions sensitive to flame, impact and friction heretofore proposed and used.
We claim:
1. In an explosion rivet an explosive charge comprising a nitrate of a solid polyvalent alcohol containing between 4 and 6 hydroxy groups, and guanylmitrosamino guanyl-tetrazene.
2. In an explosion rivet an explosive charge comprising a nitrate of a tetravalent alcohol, and guanyl-nitrosamino guanyl-tetrazene.
3. In an explosion rivet an explosive charge comprising the nitrate of a pentavalent alcohol, and guanyl-nitrosamino guanyl-tetrazene.
4. In an explosion rivet an explosive charge comprising the nitrate of a hexavalent alcohol, and guanyl-nitrosamino 'guanyl-tetrazene.
5. In an explosion rivet an explosive charge comprising mannite hexanitrate, and guanyl-nitrosamino guanyl-tetrazene.
6. In an explosion rivet an explosive charge comprising the nitrate of a solid polyvalent alcohol, guanyl-nitrosamino guanyl-tetrazene, and a powder substance of good thermal conductivity selected from the class consisting of metals, metal carbides, metal sulfides, metal sulfites, and metal oxides.
7. In an explosion .rivet an explosive charge comprisingmannitehexanitrate,guanyl-nitrosamino guanyl-tetrazene, and a powder substance of good thermal conductivity selected from the class consisting of metals, metal carbides, metal sulfides, metal sulfites, and metal oxides.
8. In an explosion rivet an explosive charge comprising mannite hexanitrate, guanyl-nitrosamino guanyl-tetrazene, and a metal powder.
9. In an explosion rivet an explosive charge comprising mannite hexanitrate, guanyl-nitrosamino guanyl-tetrazene; and aluminum powder.
10. In an explosion rivet an explosive charge comprising a nitrate of apolyhydroxy alcohol containing between 4 and 6 hydroxy groups a finely divided diluent of high thermal conductivity selected from the class consisting of metals, metal carbides, metal sulfides, metal sulfites, and metal oxides, and tetrazene.
11. In an explosion rivet an explosive charge comprising a. nitrate of a polyhydroxy alcohol containing between 4 and 6 hydroxy groups, tetrazene, and a finely divided metal.
12. In an explosion rivet an explosive charge comprising a nitrate of a polyhydroxy alcohol containing between 4 and 6 hydroxy'groups, tetrazene, and finely divided silver. I
13. In an explosionrivet an explosive charge comprising a nitrate of a polyhydroxy alcohol containing between 4 and 6 hydroxy groups, tetrazene, and finely divided copper.
14. In an explosion rivet an explosive charge eomprisinga nitrate of a polyhydroxy alcohol containing between 4 and 6 hydroxy groups, tetrazene, and finely divided aluminum.
\ EDMUND VON HERZ.
HEINZ GAWLICK. HANS RATHSBURG.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE217496X | 1938-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2261195A true US2261195A (en) | 1941-11-04 |
Family
ID=5830777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US277322A Expired - Lifetime US2261195A (en) | 1938-07-16 | 1939-06-03 | Explosive composition for detonating rivets |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2261195A (en) |
| BE (1) | BE434952A (en) |
| CH (1) | CH217496A (en) |
| FR (1) | FR856232A (en) |
| GB (1) | GB532317A (en) |
| NL (1) | NL51299C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2985634A (en) * | 1956-10-01 | 1961-05-23 | Courtaulds Ltd | Production of polymers and copolymers of acrylonitrile |
| US20060291976A1 (en) * | 2001-01-12 | 2006-12-28 | Teruo Nakagami | Fastener with tightening structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58148B2 (en) * | 1972-08-22 | 1983-01-05 | 日本電子株式会社 | Denshijiyuu |
-
0
- BE BE434952D patent/BE434952A/xx unknown
- NL NL51299D patent/NL51299C/xx active
-
1939
- 1939-06-03 US US277322A patent/US2261195A/en not_active Expired - Lifetime
- 1939-06-05 CH CH217496D patent/CH217496A/en unknown
- 1939-06-15 FR FR856232D patent/FR856232A/en not_active Expired
- 1939-07-17 GB GB20763/39A patent/GB532317A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2985634A (en) * | 1956-10-01 | 1961-05-23 | Courtaulds Ltd | Production of polymers and copolymers of acrylonitrile |
| US20060291976A1 (en) * | 2001-01-12 | 2006-12-28 | Teruo Nakagami | Fastener with tightening structure |
| US7284939B2 (en) * | 2001-01-12 | 2007-10-23 | Teruo Nakagami | Fastener with tightening structure |
Also Published As
| Publication number | Publication date |
|---|---|
| BE434952A (en) | |
| FR856232A (en) | 1940-06-07 |
| CH217496A (en) | 1941-10-31 |
| GB532317A (en) | 1941-01-22 |
| NL51299C (en) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2410801A (en) | Igniting composition | |
| AU679301B2 (en) | Lead-free priming mixture for percussion primer | |
| US2974596A (en) | Propellant grain igniter | |
| US5646367A (en) | Conductive primer mix | |
| US3275484A (en) | Percussion sensitive pyrotechnic or pyrophoric alloy-type priming mixture | |
| US3499386A (en) | Primer | |
| US3126305A (en) | Ignition compositions comprising boron containing salts | |
| US2095302A (en) | Ammunition | |
| US3374127A (en) | Compressed metal containing ternary explosive composition | |
| US2261195A (en) | Explosive composition for detonating rivets | |
| US3476623A (en) | Metal azide electrically conductive priming composition and manufacture thereof | |
| US3617405A (en) | Incendiary composition containing a metal, metal alloy, oxidizer salt, and nitrated organic compound | |
| US20110240185A1 (en) | Lead-Free Nanoscale Metal/Oxidizer Composite for Electric Primers | |
| US2293373A (en) | Explosion rivet | |
| US4402705A (en) | Incendiary composition containing a group IVB metallic fuel | |
| US2402235A (en) | Blasting initiator | |
| US20110240184A1 (en) | Lead-Free nanoscale Metal/Oxidizer Composit for Percussion Primers | |
| US3742859A (en) | Explosive charge | |
| US1797509A (en) | Electric blasting cap and ignition material for the same | |
| US2007223A (en) | Ignition composition | |
| US2970047A (en) | Conductive priming mixture | |
| US2422043A (en) | Compound detonator | |
| US3411446A (en) | Igniter cord | |
| US1964825A (en) | Ignition composition | |
| US2867517A (en) | Detonator compositions |