US3155039A - Safety plug for explosive cartridge - Google Patents

Safety plug for explosive cartridge Download PDF

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Publication number
US3155039A
US3155039A US206767A US20676762A US3155039A US 3155039 A US3155039 A US 3155039A US 206767 A US206767 A US 206767A US 20676762 A US20676762 A US 20676762A US 3155039 A US3155039 A US 3155039A
Authority
US
United States
Prior art keywords
plug
primer
shell
cartridge
firing pin
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
US206767A
Other languages
English (en)
Inventor
William F Broske
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.)
TE Connectivity Corp
Original Assignee
AMP Inc
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
Priority to NL294624D priority Critical patent/NL294624A/xx
Priority to NL133709D priority patent/NL133709C/xx
Application filed by AMP Inc filed Critical AMP Inc
Priority to US206767A priority patent/US3155039A/en
Priority to GB24334/63A priority patent/GB970467A/en
Priority to CH806463A priority patent/CH402771A/fr
Priority to DE19631503138 priority patent/DE1503138B1/de
Priority to FR940030A priority patent/FR1362235A/fr
Application granted granted Critical
Publication of US3155039A publication Critical patent/US3155039A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/027—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for connecting conductors by clips
    • H01R43/0275—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for connecting conductors by clips by using explosive force
    • 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

Definitions

  • an air pocket may form in the casing and cause the firing pin to move forward ahead of it.
  • these prongs may be disabled by rotating the cartridge relative to the firing pin, thus bending them out of position prior to firing.
  • FIGURE 1 illustrates a perspective view (partially broken away) of a plug embodying the principles of this invention
  • FIGURE 2 illustrates a tool having a cartridge containing the device of FIGURE 1 therein, in inactive condition
  • FIGURE 3 is a view similar to FIGURE 2 showing the cartridge ready for firing
  • FIGURES 4, 5 and 6 are views of the plug shown in FIGURE 1 in conjunction with a fragmentary view of the firing pin during the various stages of loading and firing;
  • FIGURE 7 is a top sectional view taken through plane 7-7 of FIGURE 5.
  • the plug comprises a cylindrical member 10, preferably made of polyethylene or other plastic material.
  • One end of the plug 10 has a major coaxial aperture 12 adapted to receive and support a priming means 14.
  • the other end of the plug has a minor coaxial aperture 16, which permits the primer to actuate a powder charge when the primer is ignited.
  • V-shaped grooves 18- extend circumferentially around the outer surface of the plug. These grooves permit a tight engagement between the outer surface of the plug and the inner surface of the cartridge, thus acting as a gas check.
  • a plurality of longitudinally-extensible prongs or legs 2% project from the surface of the plug in which the primer is inserted. While any number of legs may be employed, in the preferment (FIGURE 1) four such legs are disposed about the primer at from each other. These legs may be of the same material as the plug and may be integral with the plug. The legs extend a sulficient distance to protect the primer against the firing pin when the firing pin is driven toward the primer. However, they are so constructed so that when there is a rotary motion between the firing pin and the plug (FIGURES 4 and 5), the legs will be bent out of the way quite easily and permit the firing pin to strike the primer.
  • FIGURES 2 and 3 illustrate a powder-actuated, industrial tool suitable for employng an exposive device containing a plug as set forth in FIGURE 1.
  • FIGURE 2 shows the device after loading the shell, but prior to converting it from its inactive to its active condition.
  • the tool of FIGURES 2 and 3 includes a body member B adapted to receive a C-shaped connector 30 with a central wedge 32 slidable therein to grasp a pair of conductors C and C. (This is disclosed in a prior application, Serial No. 172,183, filed February 9, 1962.)
  • One end of the body member has an internally-threaded aperture 34 adapted to receive a housing 36 with external screw threads.
  • the housing 36 is secured to a sleeve 33 which retains a firing chamber 49 therein.
  • a cap 42 is adapted to be threaded onto the free end of the housing 40.
  • a cartridge 44 is insertable into the firing chamber, and has a head 46 on one end which retains it against one end of the firing chamber.
  • An explosive charge 43 is contaned in the shell, and the plug 10 (as previously described in FIGURE 1) is inserted into the shell with a friction-fit to retain the explosive charge therein.
  • a flange 49 on the firing chamber 40 abuts a setscrew 50 to permit sliding motion between the sleeve 38 and the firing chamber, but permits them to travel together in a rotary direction.
  • a firing pin 52 is slidable in the firing chamber and penetrates the open end of the shell 44. The other end of the firing pin comprises a head member 53 which projects from the housing 36 and, when fired, bears against the wedge 32 to drive it into position (see FIGURE 3).
  • a prong 54 projects from the cap 42 to puncture the head 46 of the shell 44 and permits the escape of gases when it is desired to Withdraw the cartridge.
  • the barrel 38 is then rotated in a clockwise direction causing the screwthreads 34 to move the firing chamber inwardly until the head 53 touches the Wedge 32. Continuing the threading operation causes the head 53 to be frictionally retained against the wedge 32, and thus provides a rotary motion between the firing pin 52 and the legs 20.
  • the legs 20 resist compression in a longitudinal direction, they may be bent over fairly easily in sidewise direction. As shown in FIGURE 5, they are thus deformed out of a position wherein they protect the primer, and into a position permitting the firing pin to be driven against the primer (see FIGURE 3).
  • the cap 42 may be struck a sharp blow (e.g., with a hammer or a pair of pliers), and the cap 42 and firing chamber 40 will be driven longitudinally toward the housing 36, thus driving the plug against the firing pin 52 and causing the firing pin to ignite the primer 14. Ignition of the primer 14 explodes the charge 48 and causes it to be driven forwardly, driving the firing pin ahead of it. The forward motion of the firing pin causes it to drive the wedge 32 into the connector 30, thus making a secure electrical connection.
  • a sharp blow e.g., with a hammer or a pair of pliers
  • the design of the plug 10 eliminates the human error in the use of a safety device, since the operator is not required to set or unlock a safety mechanism, nor can he disable it.
  • a plug for use in an explosively-operated tool comprising: a cylindrical member having a primer-receiving means in one end thereof, a primer in said primer-receiving means, a plurality of projections extending from said plug and surrounding said means, said projections having high compressive strength in a longitudinal direction but being relatively flexible in a transverse direction so that they can be bent out of the way prior to firing the cartridge.
  • a cartridge for a powder-actuated tool comprising: a cylindrical shell closed at one end, a powder charge in said shell adjacent said closed end, a plug in said shell for retaining the powder charge therein, a percussion primer in said plug, said primer exposed to the open end of the shell, and means for preventing inadvertent actuation of said primer.
  • a cartridge for a powder-actuated tool comprising: a cylindrical shell closed at one end, a powder charge in said shell adjacent said closed end, a plug in said shell for retaining the powder charge therein, a primer in said plug, said primer having an actuating surface exposed to the open end of the shell, a plurality of members projecting from said plug toward the open end of said shell, said members capable of resisting force applied in a longitudinal direction while capable of being easily bent by a transverse force.
  • a cartridge for a powder-actuated tool comprising: a cylindrical shell closed at one end, a powder charge in said shell adjacent said closed end, a plug in said shell for retaining the powder charge therein, a primer in said plug, said primer having an actuating surface exposed to the open end of the shell, said plug made of a plastic material, a plurality of integral members projecting from said plug toward the open end of said shell.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Electrophonic Musical Instruments (AREA)
US206767A 1962-07-02 1962-07-02 Safety plug for explosive cartridge Expired - Lifetime US3155039A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL294624D NL294624A (da) 1962-07-02
NL133709D NL133709C (da) 1962-07-02
US206767A US3155039A (en) 1962-07-02 1962-07-02 Safety plug for explosive cartridge
GB24334/63A GB970467A (en) 1962-07-02 1963-06-19 Improvements in or relating to explosive cartridges
CH806463A CH402771A (fr) 1962-07-02 1963-06-28 Cartouche explosive propulsive pour outil industriel
DE19631503138 DE1503138B1 (de) 1962-07-02 1963-06-28 Explosivpatrone zum antrieb eines werkzeuges zum andruecken loetfreier anschlussklemmen an elektrische leiter und andrueckwerkzeug
FR940030A FR1362235A (fr) 1962-07-02 1963-07-01 Cartouche explosive propulsive pour outil industriel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US206767A US3155039A (en) 1962-07-02 1962-07-02 Safety plug for explosive cartridge

Publications (1)

Publication Number Publication Date
US3155039A true US3155039A (en) 1964-11-03

Family

ID=22767864

Family Applications (1)

Application Number Title Priority Date Filing Date
US206767A Expired - Lifetime US3155039A (en) 1962-07-02 1962-07-02 Safety plug for explosive cartridge

Country Status (6)

Country Link
US (1) US3155039A (da)
CH (1) CH402771A (da)
DE (1) DE1503138B1 (da)
FR (1) FR1362235A (da)
GB (1) GB970467A (da)
NL (2) NL133709C (da)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292363A (en) * 1964-01-30 1966-12-20 Amp Inc Explosively-operated tool
US3296792A (en) * 1964-01-30 1967-01-10 Amp Inc Explosively-operated tool
US4722189A (en) * 1986-10-02 1988-02-02 Burndy Corportion Explosively-operated tool
USRE33098E (en) * 1986-10-02 1989-10-24 Burndy Corporation Explosively-operated tool
US5329855A (en) * 1993-07-20 1994-07-19 The Whitaker Corporation Cartridge for explosively operated industrial tools
US5388499A (en) * 1994-03-15 1995-02-14 The Whitaker Corporation Cartridge for explosively operated industrial tools
US5752861A (en) * 1995-01-27 1998-05-19 The Whitaker Corporation Electrical wire connector with improved wedge

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1040762A (en) * 1911-12-07 1912-10-08 Manuel R Rodrigues Protective covering for attachment-plugs.
US2345618A (en) * 1940-02-06 1944-04-04 Edward J Mccormick Fuse
US2441907A (en) * 1945-04-25 1948-05-18 Arthur J Schmitt Mounting means more particularly for radio sockets
US2640184A (en) * 1946-11-08 1953-05-26 Charles E Eggers Fusible extension cord plug
US3007409A (en) * 1959-02-17 1961-11-07 Amp Inc Explosive cartridge
US3009419A (en) * 1958-02-27 1961-11-21 Jr Franklin B Clay Ammunition for electrically fired weapons

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE138343C (da) *
DE312110C (da) *
DE270295C (da) *
DE315255C (da) * 1917-12-29
US1416827A (en) * 1921-01-10 1922-05-23 Bradford B Holmes Ordnance
US1416828A (en) * 1921-01-18 1922-05-23 Bradford B Holmes Firearm
DE393858C (de) * 1923-03-30 1924-04-14 Franz Kuhles Sicherung fuer den Schlagbolzen von Viehschussapparaten
DE661221C (de) * 1931-11-18 1938-06-14 Karl Schermer Federsperre fuer Bolzenschussvorrichtung
DE704269C (de) * 1939-08-01 1941-03-27 Rudolf Kerner Fa Abzugssichterung fuer Betaeubungsapparate mit Zuendbolzen
DE919940C (de) * 1941-11-13 1954-11-08 Messerschmitt Boelkow Blohm Durch feste Treibstoffe betriebenes Bearbeitungswerkzeug zur Abgabe schlagartiger Arbeitsleistungen
FR1003155A (fr) * 1946-12-11 1952-03-14 Expl Des Brevets M G D Soc Pou Perfectionnements aux munitions pour armes à feu silencieuses
DE1011369B (de) * 1953-01-24 1957-06-27 Walter Schulz Bolzensetzgeraet
BE521711A (da) * 1953-01-24

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1040762A (en) * 1911-12-07 1912-10-08 Manuel R Rodrigues Protective covering for attachment-plugs.
US2345618A (en) * 1940-02-06 1944-04-04 Edward J Mccormick Fuse
US2441907A (en) * 1945-04-25 1948-05-18 Arthur J Schmitt Mounting means more particularly for radio sockets
US2640184A (en) * 1946-11-08 1953-05-26 Charles E Eggers Fusible extension cord plug
US3009419A (en) * 1958-02-27 1961-11-21 Jr Franklin B Clay Ammunition for electrically fired weapons
US3007409A (en) * 1959-02-17 1961-11-07 Amp Inc Explosive cartridge

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292363A (en) * 1964-01-30 1966-12-20 Amp Inc Explosively-operated tool
US3296792A (en) * 1964-01-30 1967-01-10 Amp Inc Explosively-operated tool
US4722189A (en) * 1986-10-02 1988-02-02 Burndy Corportion Explosively-operated tool
USRE33098E (en) * 1986-10-02 1989-10-24 Burndy Corporation Explosively-operated tool
US5329855A (en) * 1993-07-20 1994-07-19 The Whitaker Corporation Cartridge for explosively operated industrial tools
US5388499A (en) * 1994-03-15 1995-02-14 The Whitaker Corporation Cartridge for explosively operated industrial tools
US5752861A (en) * 1995-01-27 1998-05-19 The Whitaker Corporation Electrical wire connector with improved wedge

Also Published As

Publication number Publication date
GB970467A (en) 1964-09-23
CH402771A (fr) 1965-11-15
FR1362235A (fr) 1964-05-29
NL294624A (da)
DE1503138B1 (de) 1971-09-23
NL133709C (da)

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