US2709129A - Igniter compositions - Google Patents

Igniter compositions Download PDF

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Publication number
US2709129A
US2709129A US329111A US32911152A US2709129A US 2709129 A US2709129 A US 2709129A US 329111 A US329111 A US 329111A US 32911152 A US32911152 A US 32911152A US 2709129 A US2709129 A US 2709129A
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US
United States
Prior art keywords
trace
igniter
compositions
peroxide
igniter compositions
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
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US329111A
Inventor
Franklin B Clay
Richard A Sahlin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Remington Arms Co LLC
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Remington Arms Co LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Remington Arms Co LLC filed Critical Remington Arms Co LLC
Priority to US329111A priority Critical patent/US2709129A/en
Application granted granted Critical
Publication of US2709129A publication Critical patent/US2709129A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C9/00—Chemical contact igniters; Chemical lighters

Definitions

  • This invention relates to igniter compositions for tracer projectiles, and contemplates an igniter that will bur: and perform its function of igniting the actual tracer composition with little if any flame or light.
  • Tracer projectiles are particularly useful for the firing of aircraft guns and perform the function of indicating the direction of tire of a gun on a somewhat unstable mount with respect to a target usually having a high speed of movement relative to the gun. It is essential that the trace be clearly visible to the gunner or observer in the region of the target, but the flash of light immediately adjacent the muzzle of the gun has an adverse effect on the shooters vision and his ability to accurately observe the trace in the region Where the trace is of significance.
  • the present invention contemplates an igniter composition which leaves an invisible or dim trace to a minimum distance of twenty-five (25) yards and a bright and properly colored trace at greater distances.
  • Conventional igniter compositions comprise a very active fuel, such as powdered magnesium, tempered with a less energetic fuel, such as calcium resinate, and 2.;- active oxidizer and coloring agent which may be an admixture of such reagents as the peroxides of barium, strontium and lead. Igniters of this type burn immediately with a very luminous flame with an undesirable blinding of the observer by the bright trace at the shortv ranges where the trace is of little if any value.
  • igniter compositions which include a fuel of the type of calcium silicide, as a partial or entire replacement for a fuel of the type of magnesium, burn in such a manner that the trace for a minimum distance of twenty-five (25) yards is only dimly visible if visible at all. Notwithstanding this, these compositions effectively perform their intended function of igniting the actual tracer composition at a range of twenty-five (25) to seventy-five (75) yards, the com-- "ice bustion of the tracer composition thereafter furnishing a trace of the desired color, intensity and duration.
  • Typical igniter compositions according to the invention are as follows:

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

use,
KGNHTER COMPOSITIONS No Drawing. Application December 31, 1952, Serial No. 329,111
2 Claims. (Ci. 522) This invention relates to igniter compositions for tracer projectiles, and contemplates an igniter that will bur: and perform its function of igniting the actual tracer composition with little if any flame or light.
Tracer projectiles are particularly useful for the firing of aircraft guns and perform the function of indicating the direction of tire of a gun on a somewhat unstable mount with respect to a target usually having a high speed of movement relative to the gun. It is essential that the trace be clearly visible to the gunner or observer in the region of the target, but the flash of light immediately adjacent the muzzle of the gun has an adverse effect on the shooters vision and his ability to accurately observe the trace in the region Where the trace is of significance.
The present invention contemplates an igniter composition which leaves an invisible or dim trace to a minimum distance of twenty-five (25) yards and a bright and properly colored trace at greater distances.
Conventional igniter compositions comprise a very active fuel, such as powdered magnesium, tempered with a less energetic fuel, such as calcium resinate, and 2.;- active oxidizer and coloring agent which may be an admixture of such reagents as the peroxides of barium, strontium and lead. Igniters of this type burn immediately with a very luminous flame with an undesirable blinding of the observer by the bright trace at the shortv ranges where the trace is of little if any value.
It has been found that igniter compositions which include a fuel of the type of calcium silicide, as a partial or entire replacement for a fuel of the type of magnesium, burn in such a manner that the trace for a minimum distance of twenty-five (25) yards is only dimly visible if visible at all. Notwithstanding this, these compositions effectively perform their intended function of igniting the actual tracer composition at a range of twenty-five (25) to seventy-five (75) yards, the com-- "ice bustion of the tracer composition thereafter furnishing a trace of the desired color, intensity and duration.
Typical igniter compositions according to the invention are as follows:
Range, Preferred.
Percent Percent;
Strontium Peroxide 75. 0-81.0 78 Barium Peroxide 3. 9- 4.1 4 Lead Per0x1de 3. 9- 4.1 4 Calcium Resinate 6. 0- 8.0 7 Calcium Silicide 3. 0-11. 0 7
Per cent Strontium peroxide 75.0-81.0 Barium peroxide 3.9- 4.1 Lead peroxide 3.9- 4.1 Calcium resinate 6.0- 8.0
Calcium silicide 3.011.0
2. An igniter for tracer compositions consisting essentially of-- Per cent Strontium peroxide 78 Barium peroxide 4 Lead Peroxide 4 Calcium resinate 7 Calcium silicide 7 References Cited in the file of this patent UNITED STATES PATENTS 1,708,187 Meek Apr. 9, 1929 1,756,255 Meek Apr. 29, 1930 1,903,814 Grafi Apr. 18, 1933 2,115,047 Stevenson Apr. 26, 1938 2,115,608 Brandt Apr. 26, 1938 2,410,801 Audrieth Nov. 12, 1946 FOREIGN PATENTS 275,021 Great Britain Aug. 4, 1927

Claims (1)

1. AN IGNITER FOR TRACER COMPOSITIONS CONSISTING ESSENTIALLY OF-
US329111A 1952-12-31 1952-12-31 Igniter compositions Expired - Lifetime US2709129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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US2709129A true US2709129A (en) 1955-05-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031045A2 (en) * 1979-12-22 1981-07-01 Hüls Troisdorf Aktiengesellschaft Use of zinc peroxide as oxidising agent in explosives and pyrotechnic compositions
EP1023248A1 (en) * 1997-09-09 2000-08-02 Primex Technologies, Inc. Infrared tracer for ammunition

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB275021A (en) * 1926-08-09 1927-08-04 Vickers Ltd Improvements in or relating to combustible compositions for pyrotechnic, smoke and flame producing, and other like purposes
US1708187A (en) * 1926-01-18 1929-04-09 Sterner St P Meek Combustible composition
US1756255A (en) * 1925-09-08 1930-04-29 Sterner St P Meek Combustible
US1903814A (en) * 1932-05-18 1933-04-18 George U Graff Pyrotechnic starter composition
US2115047A (en) * 1936-11-30 1938-04-26 Stevenson Thomas Tracer ammunition and to an igniter mixture for tracer compositions
US2115608A (en) * 1935-09-30 1938-04-26 Sageb Sa Projectile
US2410801A (en) * 1945-03-13 1946-11-12 Ludwig F Audrieth Igniting composition

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1756255A (en) * 1925-09-08 1930-04-29 Sterner St P Meek Combustible
US1708187A (en) * 1926-01-18 1929-04-09 Sterner St P Meek Combustible composition
GB275021A (en) * 1926-08-09 1927-08-04 Vickers Ltd Improvements in or relating to combustible compositions for pyrotechnic, smoke and flame producing, and other like purposes
US1903814A (en) * 1932-05-18 1933-04-18 George U Graff Pyrotechnic starter composition
US2115608A (en) * 1935-09-30 1938-04-26 Sageb Sa Projectile
US2115047A (en) * 1936-11-30 1938-04-26 Stevenson Thomas Tracer ammunition and to an igniter mixture for tracer compositions
US2410801A (en) * 1945-03-13 1946-11-12 Ludwig F Audrieth Igniting composition

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031045A2 (en) * 1979-12-22 1981-07-01 Hüls Troisdorf Aktiengesellschaft Use of zinc peroxide as oxidising agent in explosives and pyrotechnic compositions
EP0031045A3 (en) * 1979-12-22 1982-01-27 Dynamit Nobel Aktiengesellschaft Use of zinc peroxide as oxidising agent in explosives and pyrotechnic compositions
EP1023248A1 (en) * 1997-09-09 2000-08-02 Primex Technologies, Inc. Infrared tracer for ammunition
EP1023248A4 (en) * 1997-09-09 2004-08-18 Primex Tech Inc Infrared tracer for ammunition

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