US1968134A - Combined initial and percussion composition - Google Patents

Combined initial and percussion composition Download PDF

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Publication number
US1968134A
US1968134A US502859A US50285930A US1968134A US 1968134 A US1968134 A US 1968134A US 502859 A US502859 A US 502859A US 50285930 A US50285930 A US 50285930A US 1968134 A US1968134 A US 1968134A
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US
United States
Prior art keywords
percussion
charge
detonator
combined
composition
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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
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US502859A
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English (en)
Inventor
Eschbach Wilhelm
Wippenhohn Heinrch
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Individual
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Individual
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    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B35/00—Compositions containing a metal azide

Definitions

  • the present invention avoids this drawback by' g5 using a detonator which is so constructed'that it makes the employment of a percussion cap or a special friction charge superfluous for igniting the priming charge of the detonator.
  • a detonator which is so constructed'that it makes the employment of a percussion cap or a special friction charge superfluous for igniting the priming charge of the detonator.
  • this means it is possible by this means to construct o detonators for projectiles, mines and the like in a much simpler and more eiective manner than hitherto.
  • the object of this invention is te procure a combined priming and percussion charge by superimposing on the base 'or detonator charge, such as tetryl, a powerful explosive matter which can'beQ depended upon to be ignited by the percussion needle and also to cause the detonation of the main or base detonator charge.
  • the como bined percussion and priming'charge is covered by a prick foil and an inner cap and enclosed in a casing, the whole being fastenedl securely and shock-proof in a cartridge case.
  • Suitable compositions for the combined percussion charges for this purpose are the ordinary detonator compositions as for instance azides of heavy metals, fulminate of mercury or the like, the sensitiveness against blows and friction being raised to the desired degree by suitable admixtures 40 of gritty matter, such as powdered glass or quartz, as well as other matter such as tetracene" and siIicide.
  • suitable admixtures 40 of gritty matter such as powdered glass or quartz, as well as other matter such as tetracene" and siIicide.
  • the scientific term for tetracene is guanylnitrosaminoguanyltetracene, which has the 'following formula:
  • compositions vfor this combined percussion and priming charge suitable for this purpose may also bev obtained by substituting the ble components in the usual friction charge, such as chlorate of'potassium and sulphide of antimonium, by
  • blasting explosives as for instance pentaerythri-- tetetranitrate.
  • Figure 1 is an V axial section of an old type detonator:
  • Figure 2 is a similar view of a detonator in accordance with the present invention, and
  • Figure 3 a similar View of such a detonator assembled in a shell.
  • FIG. 1 shows in section a detonator lc which has been filled by the method 00y previously usual, see Figure 1, and a similar detonator Z filled in accordance with this invention, Figure 2.
  • a is the friction charge
  • b is the priming charge
  • c is the base or deton'- ator charge. It is seen, therefore, that the det- 86 onator is divided into three parts a, b, c in the old kind of detonator.
  • the detonator l contains only two explosive charges, viz. the combined priming and percussion charge d superimposed on the base charge c as provided by the I0 present invention.
  • the combined percussion and priming charge d is placed on top of the base charge c in a casing n which is closed at the top by the prick foil o and perforated inner cap m.
  • a detonator comprising a base charge and a combined priming and percussion charge, containing substances capable of increasing'sensitiveness towards impact and friction, so that the said combined charge may be iired by the impact of the needle to causedetonation of said base charge.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
US502859A 1930-07-08 1930-12-16 Combined initial and percussion composition Expired - Lifetime US1968134A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE600918T 1930-07-08

Publications (1)

Publication Number Publication Date
US1968134A true US1968134A (en) 1934-07-31

Family

ID=34608823

Family Applications (1)

Application Number Title Priority Date Filing Date
US502859A Expired - Lifetime US1968134A (en) 1930-07-08 1930-12-16 Combined initial and percussion composition

Country Status (5)

Country Link
US (1) US1968134A (fr)
BE (1) BE379819A (fr)
DE (1) DE600918C (fr)
FR (1) FR710999A (fr)
NL (1) NL33973C (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452063A (en) * 1947-02-19 1948-10-26 Liber Harry Detonator disk
US2685251A (en) * 1947-12-17 1954-08-03 Du Pont Method of blasting
US2726602A (en) * 1952-07-01 1955-12-13 Du Pont Blasting detonator
US2780995A (en) * 1952-07-09 1957-02-12 Bombrini Parodi Delfino S P A Projectile with extra-sensitive head
US3015275A (en) * 1957-09-03 1962-01-02 Peyton Stanley Victor Explosive initiators

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452063A (en) * 1947-02-19 1948-10-26 Liber Harry Detonator disk
US2685251A (en) * 1947-12-17 1954-08-03 Du Pont Method of blasting
US2726602A (en) * 1952-07-01 1955-12-13 Du Pont Blasting detonator
US2780995A (en) * 1952-07-09 1957-02-12 Bombrini Parodi Delfino S P A Projectile with extra-sensitive head
US3015275A (en) * 1957-09-03 1962-01-02 Peyton Stanley Victor Explosive initiators

Also Published As

Publication number Publication date
NL33973C (fr)
FR710999A (fr) 1931-09-01
BE379819A (fr)
DE600918C (de) 1934-08-03

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