US3260206A - Detonator - Google Patents

Detonator Download PDF

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Publication number
US3260206A
US3260206A US344647A US34464764A US3260206A US 3260206 A US3260206 A US 3260206A US 344647 A US344647 A US 344647A US 34464764 A US34464764 A US 34464764A US 3260206 A US3260206 A US 3260206A
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US
United States
Prior art keywords
firing pin
housing
cavity
detonator
suppressing member
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
US344647A
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English (en)
Inventor
Beermann Paul
Gross-Benne Willia
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.)
RICHARD RINKER Firma
Original Assignee
RICHARD RINKER Firma
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 RICHARD RINKER Firma filed Critical RICHARD RINKER Firma
Application granted granted Critical
Publication of US3260206A publication Critical patent/US3260206A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/02—Fuze bodies; Fuze housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C5/00—Stoves or ranges for liquid fuels
    • F24C5/02—Stoves or ranges for liquid fuels with evaporation burners, e.g. dish type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/20—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C7/00—Fuzes actuated by application of a predetermined mechanical force, e.g. tension, torsion, pressure
    • F42C7/12—Percussion fuzes of the double-action type, i.e. fuzes cocked and fired in a single movement, e.g. by pulling an incorporated percussion pin or hammer

Definitions

  • the present invention relates generally to the firearms art, and, more particularly, to a detonator having a firing pin for igniting fuse cords, delayed action tubes such as a friction igniter, and for igniting blasting caps imbedded in explosive charges.
  • Detonators of various constructions which are technically satisfactory in function are known. However, many times there is a disadvantage due to their relatively high cost of construction in that the interior mechanism is constructed of complicated machined, lathed, or punched parts, the manufacture of which is accompanied by high tolerance requirements so that the production of such detonators involves relatively high costs.
  • Another object of the present invention is to provide a device of the character described which may be adapted for use with various detonator constructions.
  • a further object of the invention is to provide a device of the above-mentioned type which has a safely functioning and simply constructed stationary mounting for a fuse cord.
  • Still a further object is to provide a detonator construction which is properly sealed before use but which nevertheless properly vents the combustion gases upon operation of the device.
  • a detonator is. constructed having a housing arranged in the form of a hollow cylinder.
  • a firing pin disposed for axial movement is positioned within the housing and a spring is provided for tensioning the firing pin.
  • a blocking or suppressing member secures the firing pin against spring pressure and the firing pin can be cocked by displacing the blocking member.
  • a primer may be imbedded within the detonator housing as may a firing mechanism.
  • the firing pin is provided with a flange against which the firing pin spring abuts and the other end of the spring abuts against the bottom of the detonator housing.
  • the firing pin is also provided with a constricted portion and the blocking member or suppressor member engages this constricted portion.
  • the blocking member may slide, when the firing pin mechanism is pulled and after the firing pin is cocked, along inclined or oblique surfaces provided on the constriction and the blocking member may by this means be moved into its released position.
  • the detonator housing in a suitable manner carries an exterior thread at one end for insertion into an explosive charge, and also preferably is provided with an interior thread for threading a delayed action tube into the housing which may extend into an explosive charge.
  • the detonator carries a firing mechanism and is provided here with an exterior thread for mounting a wing nut useful for handling the device and for mounting a cap for protecting the firing mechanism.
  • FIGURE 1 is a longitudinal sectional view of a friction igniter having a delayed action tube.
  • FIGURE 2 is a longitudinal sectional view of the detonator of the present invention arranged for igniting a fuse cord.
  • FIGURE 3 is a longitudinal sectional view illustrating a first step in the construction of a slight modification of the FIGURE 2 arrangement.
  • FIGURE 4 is a longitudinal sectional view showing the final step in the construction of this modified arrangement.
  • the present invention provides a safely functioning and simple construction of a stationary fuse cord mounting. This is accomplished by using a sealing stopper as the blocking member which is disposed within an enlarged cavity of the substantially hollow and cylindrical detonator housing. This cavity opens toward the exterior side of the device and the stopper is connected with the firing mechanism.
  • the end of the firing pin which is provided with the constriction is engaged by the stopper in a sealing manner and the stopper is completely or partially divided in a longitudinal direction into at least two portions and is provided with recesses in the halves of the stopper which conform to the constricted end of the firing pin.
  • the firing pin spring is arranged to have a slight pretensioning.
  • the sealing stopper which serves as the blocking member for suppressing the firing pin is provided exteriorly of the detonator housing with means for fastening a triggering cord which is connected with a cap which may be tightly threaded onto the detonator housing.
  • the connection of the triggering cord with the suppressing member may be accomplished, for example, by means of a transverse bore in the latter.
  • Another feature of the invention provides a fixed fuse cord mounting which includes an elastic tube of rubber or the like and includes a cap screw or sleeve for causing a deformation and thus buckling of the tube.
  • the tube is suitably placed onto the end of the fuse cord inserted into the detonator housing with a certain amount of play and when there is buckling of the tube it constricts and suitably holds the fuse cord in place.
  • the novel blocking member and the cylindrical firing pin can be manufactured inexpensively and the former, for example, can be constructed by extrusion or the like of plastic and the latter by lathing on an automatic lathe. Also, a trouble-free ignition or burning, for ex ample, of a delayed action tube is assured because. after the simple device of the present invention is ignited, the stopper which serves as the blocking member is pulled out of the detonator housing completely and the combustion gases can then freely exit from the detonator housing.
  • a firing pin 2 is mounted for axial movement interiorly of a hollow detonator housing 1.
  • the firing pin is provided with a reduced portion 3 near one main portion of the firing pin and a tapered section 3b on the end portion of the firing pin.
  • a flange 2a is provided on the firing pin near its striking end and a firing pin spring 4 is also disposed within the housing and is mounted to have a slight pretensioning.
  • the spring 4 surrounds the body of the firing pin and extends between an upper partition 1b of the body and the flange on the firing pin to bias it in a downward direction.
  • the firing pin passes through an opening 10 in this partition.
  • the firing pin is provided with a bifurcated lower end 6 which is needed for igniting the primer 5.
  • This firing pin 2 is fixedly mounted in a two-piece sealing stopper or suppressor 7 which is tightly pressed into an enlarged interior cavity portion 1a of the housing 1. Variation of the force to be used for triggering the detonator may be provided by more or less tightly pressing the stopper 7 into place in the cavity In.
  • This suppressor 7 is of a material capable of deforming and its surrounds and holds in place the end of the firing pin which includes reduced portion 3.
  • the primer is mounted in a nipple 8 which is threaded into the detonator housing. A wing nut 8a and a cap 9 which is tightly screwed into place are provided at the head of the detonator.
  • a triggering cord 10 and a blocking disc 11 are disposed within the cap 9 and the peripheral dimensions of disc 11 are such that it can not be pulled out of the opening in cap 9.
  • the trigger cord 10 passes through a transverse 'bore 7a in suppressor 7 so when the cord is pulled the suppressor will release the firing pin.
  • a delayed action tube 12 is threaded into the housing 1 and is tightly surrounded by a nipple 14 which is threaded onto the housing and which is provided with a protective cap 13 at its end as well as a paraffin seal 13a.
  • the detonator is sealed by means of a clear lacquer between the nipple 14 and the detonator housing 1 and between Wing nut 8a and the housing at those places indicated at X. If desired, a blasting cap may be provided in place of a delayed action tube 12.
  • the cap 9 is unscrewed and by pulling at this cap the stopper or suppressor 7 together with the firing pin 2 is pulled upwardly by means of the trigger cord 10 and the firing pin spring 4 is further tensioned.
  • the stopper 7 will be withdrawn from the enlarged cavity 1a of the detonator housing 1 and will come apart.
  • the firing pin becomes free and because of the spring pressure of the firing pin spring 4 the pin is released and strikes the primer 5 which is fitted within the nipple 8.
  • the detonating gases may exit freely upwardly as the stopper at the timer of triggering is pulled completely out of the detonator housing and no longer closes opening 10 in partition 1b.
  • the individual portions of the detonator may be constructed of metallic material as well as of impact-resistant and tem erature-constant synthetic materials. For production purposes, it is always suitable to make the twopart stopper 7 of a plastic material.
  • FIGURE 2 elements which are similar to those of FIGURE 1 are provided with identical reference numerals.
  • a hollow cap screw or sleeve 15 is threaded onto the detonator housing 1.
  • An elastic tube 17 of rubber or of a synthetic elastic material is fixedly mounted within the cap screw 15 by means of snap rings and/or discs 16, and seals 18 are also provided in the cap screw.
  • the nipple 8 which carries the primer 5 is supported in place by a clamping ring 19.
  • a sleeve 21 is threaded onto the detonator housing and is provided with a threaded ring 22 and an elastic tube 17 which is provided for fixedly mounting the end of a fuse cord.
  • the outer diameter of the tube 17 when it is not deformed is equal to or smaller than the minor thread diameter of the threaded ring 22.
  • the socket 21 is further threaded onto the conmeeting thread of the detonator housing 1 (FIGURES 3 and 4), or the cap screw 15 is further threaded onto the connecting thread of the housing (FIGURE 2).
  • the length of the threaded portion of the detonator is longer than the length of the threads in the socket 21. Because of this, the tube 17 is deformed and buckles so that, as illustrated in FIGURE 4, it is bent and constricted until it engages the end 20 of the fuse cord. In this manner the fuse cord is tightly connected with the detonator.
  • a waterproof connection is also provided.
  • the diameter of the fuse cord may vary within wide limits.
  • the screw connection could be constructed of plastic materials or of temperature-constant impact-resistance plastic.
  • a caoutchouc or rubber-like mass or plastic material having the desired and necessary elasticity can be used for the tube which should also remain constant under temperature variations.
  • a detonator device comprising, in combination:
  • a hollow cylindrical detonator housing having an exterior thread on one end for insertion into an exposive charge and also having an interior thread for threadedly mounting a delayed action tube extending into an explosive charge, and the other end of said housing having an exterior thread;
  • a firing pin in said housing and mounted for axial movement therein, said firing pin having a flange thereon, and a reduced portion near one end thereof having inclined surfaces directed outwardly from said reduced portion toward said one end of said firing P a firing pin spring disposed between said firing pin flange and a portion of said detonator housing;
  • a firing pin suppressing member disposed in an enlarged cavity in said detonator housing, which cavity opens to the atmosphere, said one end of said firing pin normally projecting into said cavity, said suppressing member including an at least partially divided deformable stopper member engaging the reduced end portion of said firing pin and seated in said cavity in a sealing manner for normally retaining the firing pin with its said reduced portion within said cavity;
  • a firing mechanism at said other end of said housing and including a wing nut and cap threaded to said other housing end for sliding said suppressing member out of said cavity, when actuated, whereby said suppressing member slides along the inclined surfaces of said reduced portion and thereby tension the firing pin spring by retracting the firing pin until said suppressing member comes out of the cavity and releases the firing pin whereby said firing pin spring urges said firing pin to strike said primer.
  • firing pin is normally slightly pretensioned when the suppressing member holds the firing pin in position with its said reduced portion within said cavity.
  • a detonator device comprising, in combination:
  • a hollow cylindrical detonator housing having an exterior thread on one end for insertion into an explosive charge and also having an interior thread for threadedly mounting a delayed action tube extending into an explosive charge, and the other end of said housing having an exterior thread;
  • firing pin in said housing and mounted for axial movement therein, said firing pin having a flange thereon, and a reduced portion near one end thereof having inclined surfaces directed outwardly from said reduced portion toward said one end of said firing pin;
  • a firing pin spring disposed between said firing pin flange and a portion of said detonator housing
  • a firing pin suppressing member disposed in an enlarged cavity in said detonator housing, which cavity opens to the atmosphere, said one end of said firing pin normally projecting into said cavity, said suppressing member including an at least partially divided stopper member engaging the reduced end portion of said firing pin and seated in said cavity in a sealing manner for normally retaining the firing pin with its said reduced portion within said cavity;
  • a primer in said detonator housing said primer being spaced adjacent to the other end of said firing pin;
  • a fixed fuse cord mounting disposed on the opposite side of the primer from the firing pin and including an elastic tube, an end of a fuse cord disposed within said tube, a cap screw in which said tube and fuse cord end are disposed, said fuse cord being a smaller diameter than the inner diameter of said elastic tube so that it may be inserted into said tube, said cap screw being mounted for movement on said end of said detonator housing whereby movement of the cap screw toward said other end of said detonator housing causes deformation of and thus constriction of said elastic tube so that it may tightly engage said fuse cord.
  • a detonator device having a hollow cylindrical detonator housing having, on one end thereof, an exterior thread for insertion into an explosive charge and an interior thread for threadedly mounting a delay action tube extending into an explosive charge, and the other end of the housing having an exterior thread
  • a firing pin in said housing and mounted for axial movement therein said firing pin having a flange thereon, and a reduced portion near one end thereof having inclined surfaces directed outwardly from said reduced portion toward said one end of said firing pin, a firing pin spring disposed between said firing pin flange and a portion of said detonator housing, a firing pin suppressing member engaging said reduced portion of said firing pin, a primer in said detonator housing, and a firing mechanism at said other end of said housing and including a wing nut and cap threaded to said other housing end, the improvement wherein said suppressing member is disposed in an enlarged cavity in said detonator housing, which cavity opens to the atmosphere, said one end of said firing pin normally projecting into said cavity
  • a detonator device comprising, in combination:
  • a hollow cylindrical detonator housing adapted on one end for insertion into an explosive charge
  • firing pin in said housing and mounted for axial movement therein, said firing pin having spring abutting means thereon, and a reduced portion near one end thereof having inclined surfaces directed outwardly toward said one end of said firing pin from said reduced portion;
  • a firing pin spring disposed between said spring abutting means and a portion of said detonator housing
  • a firing pin suppressing member disposed in a cavity in said detonator housing, which cavity opens to the atmosphere, said one end of said firing pin normally projecting into said cavity, said suppressing member including an at least partially divided deformable stopper member engaging said reduced portion of said firing pin and seated in said cavity in a sealing manner for normally retaining said firing pin with its said reduced portion within said cavity;
  • a firing mechanism at the other end of said housing and including a cap removably connected to said other end of said housing for sliding said suppressing member out of said cavity when actuated, whereby said stopper member slides along said inclined surfaces of said reduced portion and thereby tensions said firing pin spring by retracting said firing pin until said suppressing member comes out of said cavity and releases said firing pin whereby said firing pin spring urges said firing pin to strike said primer.
  • a detonator device comprising, in combination:
  • a hollow cylindrical detonator housing having an exterior thread on one end for insertion into and explosive charge and also having an interior thread for threadedly mounting a delayed action tube extending into an explosive charge, and the other end of said housing having an exterior thread, said housing having an interior transverse partition with an opening therethrough to form a housing chamber on one side of said partition and an enlarged cavity open to the atmosphere on the other side of said partition;
  • firing pin in said housing chamber and mounted for axial movement therein, said firing pin having a flange thereon, and a reduced portion near one end thereof having inclined surfaces directed outwardly toward said one end of said firing pin from said reduced portion;
  • a firing pin spring disposed between said firing pin flange and said partition;
  • a firing pin suppressing member disposed in said cavity, said one end of said firing pin normally projecting through said partition opening and into said cavity, said suppressing member including a deformable two part stopper member engaging and at least partially surrounding said reduced portion of said firing pin and seated in said cavity in a manner which seals said partition opening for normally retaining said firing pin with its said reduced portion within said cavity;
  • a primer in said detonator housing chamber said primer being spaced adjacent to the other end of said firing P and a firing mechanism at said other end of said housing and including a wing nut and cap threaded to said other end of said housing for sliding said suppressing member out of said cavity when actuated, whereby said suppressing member slides along said inclined surfaces of said reduced portion and thereby tensions said firing pin spring by retracting said firing pin until said suppressing member comes out of said cavity and vents said chamber to the atmosphere and releases said firing pin whereby said firing pin spring 5 urges said firing pin to strike said primer.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Lighters Containing Fuel (AREA)
  • Feeding And Controlling Fuel (AREA)
US344647A 1963-02-13 1964-02-13 Detonator Expired - Lifetime US3260206A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DER0025550 1963-02-13
DER0025665 1963-03-04
DER35874A DE1213326B (de) 1963-02-13 1963-08-09 Mit einer Zugschnur ausloesbarer Schlagbolzenzuendschnuranzuender

Publications (1)

Publication Number Publication Date
US3260206A true US3260206A (en) 1966-07-12

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US344647A Expired - Lifetime US3260206A (en) 1963-02-13 1964-02-13 Detonator

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US (1) US3260206A (bg)
CH (1) CH410736A (bg)
DE (2) DE1401154A1 (bg)
NL (1) NL299471A (bg)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889601A (en) * 1965-04-06 1975-06-17 Frank J Koehne Incendiary device for destroying improperly handled classified data and the like
US3901155A (en) * 1973-01-05 1975-08-26 Buck K G Fa Self-sealing ignition device
US4008666A (en) * 1974-02-26 1977-02-22 Hagenuk & Co. Gmbh Percussion igniter
US4038924A (en) * 1974-03-19 1977-08-02 Hagenuk & Co Gmbh Igniter for fuses and the like
US10047583B2 (en) * 2014-11-10 2018-08-14 Wright's Well Control Services, Llc Explosive tubular cutter and devices usable therewith
US20200025544A1 (en) * 2017-04-13 2020-01-23 Fr. Sobbe Gmbh Ignition Device with a Compact Design

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1319103A (en) * 1919-10-21 Hand-gbenade
US1675118A (en) * 1925-10-22 1928-06-26 Vickers Ltd Percussion firing mechanism
US1792023A (en) * 1925-07-06 1931-02-10 Lake Erie Chemical Company Vault gas bomb
US2075813A (en) * 1935-09-30 1937-04-06 John M King Firing mechanism
US2935949A (en) * 1958-10-09 1960-05-10 Frank L Holford Combination mine fuze

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1762438U (de) * 1957-10-24 1958-02-27 Richard Rinker K G A A Zuendschnuranzuender mit schlagbolzen und zuendschnurhalter.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1319103A (en) * 1919-10-21 Hand-gbenade
US1792023A (en) * 1925-07-06 1931-02-10 Lake Erie Chemical Company Vault gas bomb
US1675118A (en) * 1925-10-22 1928-06-26 Vickers Ltd Percussion firing mechanism
US2075813A (en) * 1935-09-30 1937-04-06 John M King Firing mechanism
US2935949A (en) * 1958-10-09 1960-05-10 Frank L Holford Combination mine fuze

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889601A (en) * 1965-04-06 1975-06-17 Frank J Koehne Incendiary device for destroying improperly handled classified data and the like
US3901155A (en) * 1973-01-05 1975-08-26 Buck K G Fa Self-sealing ignition device
US4008666A (en) * 1974-02-26 1977-02-22 Hagenuk & Co. Gmbh Percussion igniter
US4038924A (en) * 1974-03-19 1977-08-02 Hagenuk & Co Gmbh Igniter for fuses and the like
US10047583B2 (en) * 2014-11-10 2018-08-14 Wright's Well Control Services, Llc Explosive tubular cutter and devices usable therewith
US20200025544A1 (en) * 2017-04-13 2020-01-23 Fr. Sobbe Gmbh Ignition Device with a Compact Design
US11098995B2 (en) * 2017-04-13 2021-08-24 Fr. Sobbe Gmbh Ignition device with a compact design

Also Published As

Publication number Publication date
CH410736A (de) 1966-03-31
DE1401154A1 (de) 1968-10-03
DE1213326B (de) 1966-03-24
NL299471A (bg)

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