US2102245A - Explosive charge and apparatus for the manufacture of the same - Google Patents

Explosive charge and apparatus for the manufacture of the same Download PDF

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Publication number
US2102245A
US2102245A US727635A US72763534A US2102245A US 2102245 A US2102245 A US 2102245A US 727635 A US727635 A US 727635A US 72763534 A US72763534 A US 72763534A US 2102245 A US2102245 A US 2102245A
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US
United States
Prior art keywords
snow
water
carbon dioxide
mixture
manufacture
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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US727635A
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English (en)
Inventor
Weber Guillaume
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.)
Les Petits Fils De Francois De Wendel & Cie
PETITS FILS FRANCOIS WENDEL
Original Assignee
PETITS FILS FRANCOIS WENDEL
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 PETITS FILS FRANCOIS WENDEL filed Critical PETITS FILS FRANCOIS WENDEL
Application granted granted Critical
Publication of US2102245A publication Critical patent/US2102245A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
    • 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

Definitions

  • An explosive system which consists of a certain quantity pf water or of substances impregnated with water, and of a priming cartridge adapted to supply the heat necessary to cause the practically instant vaporization of the water.
  • a safety explosive which consists of solid carbon dioxide and a heating device, for example, a priming cartridge of any usual type, provided with a firing device, and the'heat supplied by this cartridge causes the sublimation of the carbon dioxide.
  • the present invention has for its object an explosive which is chiefly characterized by the fact that it comprises a mixture of water snow and of carbon'dioxide snow and aheating device adapted to vaporize said mixture.
  • the water snow is preserved better according to as the proportion of carbon dioxide snow, due
  • proportion of water snow may vary, for instance, between 20 and 40%. As the carbon dioxide snow is sublimed before the water snow melts, the proportion of water snow increases gradually between the loading and the firing, and reaches about 50% at the time of firing.
  • the priming charge may consist of an explosive based upon liquid oxygen, or of any explosive,-comprising the safety explosives.
  • the explosive system water snow and carbon dioxide snow, may be proposed for coal mines containing fire damp and dust, and for potash mines containing fire damp.
  • Figs. 1 to 3 represent, in longitudinal section, various methods of utilization of the explosive according to the invention.
  • Fig. 4 shows a diagrammatic vertical section of. an installation adapted to be utilized for the manufacture of a mixture of water snow and carbon dioxide snow.
  • Fig. 5 is a partial section of the jector.
  • the priming charge 22 with a detonator 23 is placed, at will, in front (Fig. 1), in the rear (Fig.
  • the packing 26 is carried out in the usual manner, and the firing is done by meansof a 30 cord or by electric conductorsi l.
  • the water snow may be produced at the same time as the carbon dioxide snow, by introducing into the receptacle or expansion chamber of the carbon dioxide, water in a finely divided state, in the form of vapour o r mist.
  • the liquid carbon dioxide contained in the cylinders I such as are-currently found in commerce, circulate through valves 2 and,tubes 3 and expansion nozzles i, into an expansion chamber 5 contained in a receptacle 6.
  • the expansion chamber 5 is preferably surrounded by an envelope of wool l.
  • the receptacles 5 and 6 are provided with covers 8 and 9.
  • the installation further comprises a receptacle .0 containing water.
  • This receptacle I0 is connectedwith a cylinder H containing carbon dioxide by a tube l2, provided with a valve l3.
  • the water receptacle l0 carries at its upper part a pressure-gauge i4 adapted for the observation water inof the pressure 01' the carbon dioxide gas at the admission end of a tube l5 which is provided at the bottom with a sprayer I6 delivering into the expansion chamber 5.
  • the water is supplied to the sprayer by a small tube I! ( Figures 4 and 5).
  • the output of the water is greater or less according to the diameter of the orifice of the sprayer l5, which diameter may vary from a few tenths of a millimetre to a millimetre.
  • Use is made, preferably, of carbon dioxide gas under pressure for spraying the water in order to be able, if necessary, to recover the carbon dioxide which is not solidified during the expansion, for further use, after passing through a gas-holder l8 into which it is circulated through the pipe 19 and from which it is again compressed in cylinders in view of another expansion.
  • the covers 8 and 9 of the receptacle 5 and of the expansion chamber 5 permit the removal of the mixture of water snow and of carbon dioxide snow.
  • Ablasting charge comprising in combination amixture of water in the form of snow and of carbon dioxide in the form of snow, and a heating element adjacent said mixture and adapted to produce the heat necessary to cause the instant vaporization of said mixture.
  • a blasting charge comprising in combination a mixture of carbon dioxide in the form of snow and of another substance in the formof snow adapted to be vaporized at a temperature higher than the temperature at which said carbon di-l oxide is sublimated, and a heating element adjacent said mixture and adapted to produce the heat necessary to cause the instant vaporization of said mixture.
  • a blasting carx'idge comprising in combination an envelope rmeable to gas, in said ensnow and of another substance in the form of snow adapted to be vaporized at a temperature higher than the temperature at which said carbon dioxide is sublimated, and a heating element adjacent said mixture and adapted to produce the 1 heat necessary to cause the instant vaporization of said mixture.
  • a blasting charge comprising in combination a mixture of water in the form of snow and of another substance in the form of snow adapted Z velope a mixture of carbon dioxide in the form of said expansion chamber and said container, 9.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
US727635A 1933-06-17 1934-05-26 Explosive charge and apparatus for the manufacture of the same Expired - Lifetime US2102245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR424460X 1933-06-17

Publications (1)

Publication Number Publication Date
US2102245A true US2102245A (en) 1937-12-14

Family

ID=8898801

Family Applications (1)

Application Number Title Priority Date Filing Date
US727635A Expired - Lifetime US2102245A (en) 1933-06-17 1934-05-26 Explosive charge and apparatus for the manufacture of the same

Country Status (5)

Country Link
US (1) US2102245A (pl)
BE (1) BE403498A (pl)
DE (1) DE645163C (pl)
GB (1) GB424460A (pl)
NL (1) NL38572C (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6067077A (ja) * 1983-09-19 1985-04-17 Ishikawajima Harima Heavy Ind Co Ltd 被研掃物の研掃方法及び装置

Also Published As

Publication number Publication date
BE403498A (pl)
NL38572C (pl)
GB424460A (en) 1935-02-21
DE645163C (de) 1937-05-22

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