US1895563A - Blasting cartridge charged with a compressed gas - Google Patents

Blasting cartridge charged with a compressed gas Download PDF

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Publication number
US1895563A
US1895563A US633406A US63340632A US1895563A US 1895563 A US1895563 A US 1895563A US 633406 A US633406 A US 633406A US 63340632 A US63340632 A US 63340632A US 1895563 A US1895563 A US 1895563A
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US
United States
Prior art keywords
charge
pressure
gas
container
compressed gas
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
Application number
US633406A
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English (en)
Inventor
Frank H Armstrong
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.)
SAFETY MINING Co
Original Assignee
SAFETY MINING CO
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 SAFETY MINING CO filed Critical SAFETY MINING CO
Application granted granted Critical
Publication of US1895563A publication Critical patent/US1895563A/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
    • F42B3/06—Blasting cartridges, i.e. case and explosive for producing gas under pressure with re-utilisable case

Definitions

  • a device allowing to heat this fluid, by producing a chemical reaction, or by any other means, to vaporize it, increase the pressure of the gas charge, and thus cause the rupture of a suitable sealing device closing the case, and the escape of the gas into the material to be blasted in which the cartridge is placed.
  • the cartridge is so devised that the explosion be provoked without the help of any heating means, the desired effect being simply obtained by releasing, by means ot a suitable de v1ce, acharge of highly compressed gas contained 1n the cartridge.
  • Fig. 2 is a similar view of a second form of construction
  • Fig. 4 is a plan view of the device for the remote control of the cartridge.
  • This cartridge comprises a case 1 having a chamber 2which contains a charge of gas compressed to a high pressure, for instance 5,000 to 10,000 pounds per square inch.
  • This chamber is hermetically sealed, in a known manner, by a steel disc 3, clamped against a shoulder 1a of the case 1 by a hollow cap 4 perforated with discharge holes 4a extending from its recess 46 to the exterior.
  • the disc 3 isprevented from breaking until the cartridge is to be used by a toggle mechanism arranged in the recess 46 of cap 4.
  • This mechanism comprises two levers 5 and 6 pivotally connected together i at 7 and through the medium of which the center of the disc 3 bears upon an abutment-screw 8 screwed in the top of the cap.
  • the said levers are held in operative position by a finger 5a, formed for instance at the end of the lever 5 which carries the pivot 7, and abutting a ainst the wall of the recess 4?) (position indicated in full lines).
  • a finger 5a formed for instance at the end of the lever 5 which carries the pivot 7, and abutting a ainst the wall of the recess 4?) (position indicated in full lines).
  • the above mechanism is put out of action by breaking the rigid support it afl'ords to the disc 3, and, for that purpose, the levers 5 and 6 are caused to pivot to the position indicated in dot and dash lines, in which the lever 5 is moved away from the disc.
  • This operation can be efi'ected from a distance,-for instance by means of a cable 9.
  • the cartridge can be charged with a gas having the necessary pressure for producing the desired eflect; the said cartridge can be transported to the place of utilization where it is suitably inserted in position, whereupon, by means of the cable 9, the levers 5 and 6 are moved to inoperative position.
  • the disc 3, being no longer supported, is ruptured and the gas escapes into the material to be blasted through the holes of the cap 4.
  • Figs. 2 to 4 also comprises a sealing disc 3 so devised as to withstand only a pressure below that of the charge of gas contained in the chamber 2. As in the preceding case, its resistance corresponds for instance to a pressure equal to one-half of that of this charge.
  • This disc 10 is embossed, so as to form, at its periphery, bent flanges 10a through the presses upon the disc 3, a hollow 10?) also pressing clamped on the disc 3 by the cap 4, an empty space 11 exists between both discs.
  • This space 11 is connected to the chamber 2 by a passage 12, provided in the wall of the case 1, and normally sealed by a valve 13.
  • the valve 13 is provided, outside the cartridge, with a circular head 14 in the shape of a pulley, in the groove of which is secured an operating cable "15 so arranged that by pulling this cable the needle valve 18 opened.
  • the disc 10 too is so devised as to have a resistance below that necessary for withstanding by itself the pressure existing in the chamber 2, but the combination of both discs 10 and 3 allows them to withstand this pressure and to insure the sealing of the said chamber.
  • the disc 10 directly subjected to this pressure, is ruptured, and the disc 3, deprived of its support, is ruptured immediately after.
  • the device according to the invention allows to transport a charge of a highly compressed gas from the charging station to the point of use and to operate it with the greatest case, without the help of electric or thermal means of any kind whatever. This latter advantage is particularly important concerning safety.
  • a gas of any nature may be used as a blasting medium, the use of liquefied carbonic dioxide is preferred, owing to its high density.
  • a material blasting device comprising a container constructed to withstand any pressures to which it might be subjected while performing the work for which it is designed, a charge of gas within said container at a pressure sufficient to perform said work, and means for liberating said charge when desired.
  • a material blasting device comprising a container having therein a charge of gas of sufiicient volume and pressure to perform the desired work in relation to a particular material, and means for liberating said charge when desired, said container being reusable.
  • a material blasting device comprising a reusable container having therein a charge of gas of suflicient volume and pressure to perform the desired work in relation to the particular material to be treated, and means operable from a remote point for instantaneously liberating said charge.
  • a material blasting device comprising a reusable container having therein a charge of compressed gas at work performing pressure, and controllable means for liberating the charge at such pressure.
  • a material blasting device comprising a container for confining a charge of compressed gas at work performing pressure and means operable from a remote point for suddenly liberating the charge without prior change of condition of the charge.
  • a material blasting device comprising means capable of confining a charge of compressed gas at Work performing pressure, and mechanical means associated with the device for liberating said charge.
  • a material blasting device comprising means capable of confining a charge of compressed gas at work performing pressure, and mechanical means associated with said device and subject to actuation from a remote point for liberating said charge.
  • a material blasting device comprising a container having av discharge opening therein, a rupturable closure for said opening, a
  • said closure being of insufficient strength to alone withstand the pressure of said charge, and means for preventing failure of said closure until release of said charge is desired.
  • a material blasting device comprising a container having a discharge opening therein, a rupturable closure for said opening, a charge of gas at work performing pressure within said container, said closure being of insufficient strength to alone withstand the pressure of said charge, and means for supporting said closure against said pressure, said support being subject to withdrawal at will, thus, resulting in instantaneous failure of said closure and liberation of said charge.
  • a material blasting device comprising a charge of energy in work performing condition confined within a substantially indestructible container, and means associated with said container for effecting release of said charge when desired without altering the condition thereof.
  • a device for blasting coal comprising a container having therein a charge of gas of suflicient volume and pressure to produce the desired results, said container adapted to be placed in a drill hole in the coal to be broken and means associated with said container so positioned in the drill hole for remeans associated with the device for ing said charge at said pressure.
  • a material blasting device comprising means capable of holding a charge of compressed gas at work performing pressure, and means associated with the device and sub ect to controlled actuation from a remote point for liberating said charge at said pressure.
  • a material blasting device comprising a container having a discharge opening therein, a closure for said opening, a charge of gas at work performing pressure within said container, said closure being incapable alone to prevent the release of said charge through said opening, and means for assisting the closure to hold the charge, said means being operable at will to withdraw its assistance to cause the charge to be released.
  • a material blasting device comprising a container having a discharge opening therein, a closure for said opening, a charge of gas at work performing pressure within said container, said closure being incapable alone to prevent the release of said charge through said opening, means for assisting the closure to hold the charge, and means controllable liberat from a remote point for causing the last mentioned means to be withdrawn at will from assisting the closure, thus, resulting in instantaneous liberation of said charge.
  • a material blasting device comprising a container having a discharge opening therein, closure means for said opening, a charge of gas within said container of suflicient volume and pressure .to produce the desired results, said closure means being of suflicient strength to hold the charge against liberation through said opening, and means operable at will to cause failure of said closure means to bring about liberation of the charge.
  • a method of blasting material which comprises confining a charge of gas compressed to a pressure capable of performing the intended work within a depression in said material, and liberating said charge from its confinement, without substantial change in pressure when desired to permit the gas to expand to perform its intended work.
  • a method of blasting material which comprises confining in a suitable container a charge of gas compressed to a pressure capable of performing the intended work, placing the charged container in work performing relation with respect to the material to be broken, discharging the charge of gas from the container without substantial change in pressure to permit the gas to expand to perform its intended work, and controlling the direction of discharge of the gas with respect to the said material.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
US633406A 1932-05-19 1932-09-16 Blasting cartridge charged with a compressed gas Expired - Lifetime US1895563A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR653296X 1932-05-19

Publications (1)

Publication Number Publication Date
US1895563A true US1895563A (en) 1933-01-31

Family

ID=9005781

Family Applications (1)

Application Number Title Priority Date Filing Date
US633406A Expired - Lifetime US1895563A (en) 1932-05-19 1932-09-16 Blasting cartridge charged with a compressed gas

Country Status (6)

Country Link
US (1) US1895563A (enrdf_load_stackoverflow)
BE (1) BE396406A (enrdf_load_stackoverflow)
DE (1) DE653296C (enrdf_load_stackoverflow)
FR (1) FR750960A (enrdf_load_stackoverflow)
GB (1) GB406523A (enrdf_load_stackoverflow)
NL (2) NL65213B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459687A (en) * 1937-06-22 1949-01-18 Josef B Decker Aerial signal
US2621351A (en) * 1948-08-30 1952-12-16 Phillips Petroleum Co Apparatus for forcibly propelling pellets against a surface
US3022730A (en) * 1958-07-15 1962-02-27 Olin Mathieson Safety blasting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459687A (en) * 1937-06-22 1949-01-18 Josef B Decker Aerial signal
US2621351A (en) * 1948-08-30 1952-12-16 Phillips Petroleum Co Apparatus for forcibly propelling pellets against a surface
US3022730A (en) * 1958-07-15 1962-02-27 Olin Mathieson Safety blasting device
US3041969A (en) * 1958-07-15 1962-07-03 Olin Mathieson Gas pressure devices

Also Published As

Publication number Publication date
BE396406A (enrdf_load_stackoverflow)
NL43906C (enrdf_load_stackoverflow)
FR750960A (fr) 1933-08-24
DE653296C (de) 1937-11-19
GB406523A (en) 1934-03-01
NL65213B (enrdf_load_stackoverflow)

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