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US3882622A - Locking means for firearms - Google Patents

Locking means for firearms Download PDF

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Publication number
US3882622A
US3882622A US379811A US37981173A US3882622A US 3882622 A US3882622 A US 3882622A US 379811 A US379811 A US 379811A US 37981173 A US37981173 A US 37981173A US 3882622 A US3882622 A US 3882622A
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United States
Prior art keywords
locking
cam
safety lever
surface portion
plunger
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Expired - Lifetime
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US379811A
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George T Perlotto
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Individual
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Priority to US379811A priority Critical patent/US3882622A/en
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Publication of US3882622A publication Critical patent/US3882622A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/02—Key-operated safeties

Definitions

  • FIG. 1 shows thhe upper handle and hammer end of an automatic pistol.
  • FIG. 2 shows a partly cross-sectional view of the locking plunger pin and spring.
  • FIG. 3 shows a cross-sectional view of the locking plunger pin in contact with the locking plunger cam in locking position.
  • FIG. 4 shows a cross-sectional view of the locking plunger pin in contact with the locking plunger cam in an unlocking position.
  • FIG. 5 is a top cross-sectional view of FIG. 4 showing the locking plunger pin in an unlocking position.
  • FIG. 6 is a top cross-sectional view of FIG. 3 showing the locking plunger pin in a locking position.
  • FIG. 7 is a perspective view of the locking cam.
  • FIG. 8 is a perspective view of the safety lever trun- IIIOII.
  • FIG. 1 shows perspective view of the rear upper handle end of an automatic pistol 2.
  • a key 4 is shown inserted into the locking means 6 which controls the rotational movement of a locking cam 10, shown in FIG. 7, allowing the locking plunger 12, shown in FIG. 2, FIG. 3, FIG. 4, FIG. 5, and FIG. 6 to be moved in locking recess 14 of half-circular shoulder portion 16 of shaft 18 of safety lever 20.
  • the locking plunger pin 12 is slidable within a bore 13 and held against the locking cam and semi-circular shoulder portion 16 by spring 22.
  • a threaded plug 24 is inserted in the bore to allow removal, however, it is to be understood that other permanent plug means can be inserted as a plug to prevent withdrawal of the locking plunger pin. It is to be further understood that a square bore instead of a round bore and a square pin instead of a round pin is adaptable to this device.
  • FIG. 7 shows the locking cam 10
  • FIG. 5 and FIG. 6 shows the locking cam 10in its un-Iocked position and locked position, respectively.
  • the locking cam 10 consists of a segmented quarter section 32 which is rotated ninety degrees as shown in FIG. 5 and FIG. 6. It includes a surface portion 49 which abuts the semi-circular surface portion 51 of shaft 18 of safety lever means.
  • the cam 10 includes a flat edge 34 on surface portion 50 which is parallel to flat-sided extension 36. Extension 36 is a lock contacted by key 4 and turned by the sides of the key from a locked position to an un-locked position and vice-versa.
  • the quarter section 32 is adapted to move within the recess 52 depending on whether the safety lever of the pistol is to be locked or un-locked.
  • the cam 10 is placed in position when a bore 40 is drilled in the slide 42 and either press-fitted in position or secured by other conventional means, e.g. brazing, welding or soldering at shaft portion 44.
  • a retaining cap 46 is secured to the slide 42 by conventional means, and includes a bore 48 which allows entry of key 4 to turn cam 10 to lock or un-lock the safety lever.
  • FIG. 3 and FIG. 6 shows the locking plunger pin 12 against edge 34 of locking cam 10, allowing plunger pin 12 to fit into locking recess 14, thereby preventing the safety lever 20 to be removed from the safety position of the firearm as shown in FIG. 2.
  • the firearm can now be fired.
  • a locking mechanism for a firearm comprising a safety lever, means for locking said safety lever with a key operable lock, a locking cam having a cam surface, a proper key to rotate said lock and locking cam, a locking plunger whereby movement of the locking cam moves said locking plunger releasing said safety lever, said locking cam having a key operable lock at one end whereby said locking cam is rotated when the proper key is inserted and turned.
  • said locking cam includes a flat cam surface portion and a curved cam surface portion.
  • said safety lever includes a shaft extending from said safety lever, the end of said shaft including a flat semi-circular shoulder surface portion abutting one end of the locking cam, said semicircular shoulder surface portion having a recess portion extending radially whereby said locking plunger is adapted to move in said recess portion of said shouldersurface portion to prevent rotation of said safety lever, thus locking the firearm.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lock And Its Accessories (AREA)

Abstract

A locking means for firearms operable by means of a key operated cam. The purpose being that only the person holding the proper key to the firearm can release the safety lever from its locking position.

Description

Unlted States Patent 91 [111 3,882,622
Perlotto 1 May 13, 1975 [54] LOCKING MEANS FOR FIREARMS 2,945,316 7/1960 Mulno 42/1 LP 3,553,877 1/1971 Welch et a1.... 42/1 LP [76] Inventor: Gemge 1 22639 Overlake 3,673,725 7/1972 Cravener 42/1 LP Ave., St. C1a1r Shores, Much. 48080 Filedi y 16, 1973 Primary ExaminerBenjamin A. Borchelt [21] APPL No; 379,811 Assistant Examiner-C. T. Jordan [52] U.S. Cl 42/1 LP [57] ABSTRACT I 41 17 08 gz l Search F A lockmg means for firearms operable by means of a y p e Cam- The p p being that y the [56] References Cited person holding the proper key to the firearm can reh I UNITED STATES PATENTS lease t e safety lesler from its lockmg posmon 633,939 9/1899 Ackerman 42/l LP 4 Claims, 8 Drawing Figures LOCKING MEANS FOR FIREARMS SUMMARY OF THE INVENTION The invention relates to a means for locking a firearm by means of a key. The purpose being that the person with the proper key could release the safety position of the firearm, or lock the firearm, thus preventing accidental shooting of the firearm.
FIG. 1 shows thhe upper handle and hammer end of an automatic pistol.
FIG. 2 shows a partly cross-sectional view of the locking plunger pin and spring.
FIG. 3 shows a cross-sectional view of the locking plunger pin in contact with the locking plunger cam in locking position.
FIG. 4 shows a cross-sectional view of the locking plunger pin in contact with the locking plunger cam in an unlocking position.
FIG. 5 is a top cross-sectional view of FIG. 4 showing the locking plunger pin in an unlocking position.
FIG. 6 is a top cross-sectional view of FIG. 3 showing the locking plunger pin in a locking position.
FIG. 7 is a perspective view of the locking cam.
FIG. 8 is a perspective view of the safety lever trun- IIIOII.
DETAILED DESCRIPTION FIG. 1 shows perspective view of the rear upper handle end of an automatic pistol 2. A key 4 is shown inserted into the locking means 6 which controls the rotational movement of a locking cam 10, shown in FIG. 7, allowing the locking plunger 12, shown in FIG. 2, FIG. 3, FIG. 4, FIG. 5, and FIG. 6 to be moved in locking recess 14 of half-circular shoulder portion 16 of shaft 18 of safety lever 20.
As shown in FIG. 2, the locking plunger pin 12 is slidable within a bore 13 and held against the locking cam and semi-circular shoulder portion 16 by spring 22. A threaded plug 24 is inserted in the bore to allow removal, however, it is to be understood that other permanent plug means can be inserted as a plug to prevent withdrawal of the locking plunger pin. It is to be further understood that a square bore instead of a round bore and a square pin instead of a round pin is adaptable to this device.
While FIG. 7 shows the locking cam 10 and FIG. 5 and FIG. 6 shows the locking cam 10in its un-Iocked position and locked position, respectively. The locking cam 10 consists of a segmented quarter section 32 which is rotated ninety degrees as shown in FIG. 5 and FIG. 6. It includes a surface portion 49 which abuts the semi-circular surface portion 51 of shaft 18 of safety lever means. The cam 10 includes a flat edge 34 on surface portion 50 which is parallel to flat-sided extension 36. Extension 36 is a lock contacted by key 4 and turned by the sides of the key from a locked position to an un-locked position and vice-versa. The quarter section 32 is adapted to move within the recess 52 depending on whether the safety lever of the pistol is to be locked or un-locked. The cam 10 is placed in position when a bore 40 is drilled in the slide 42 and either press-fitted in position or secured by other conventional means, e.g. brazing, welding or soldering at shaft portion 44. A retaining cap 46 is secured to the slide 42 by conventional means, and includes a bore 48 which allows entry of key 4 to turn cam 10 to lock or un-lock the safety lever.
In operation, viewing FIG. 3 and FIG. 6, shows the locking plunger pin 12 against edge 34 of locking cam 10, allowing plunger pin 12 to fit into locking recess 14, thereby preventing the safety lever 20 to be removed from the safety position of the firearm as shown in FIG. 2.
To unlock the safety lever, key 4 is inserted into retaining cap 46 and connected to extension 36 of locking cam 10, and rotated thus moving locking cam 10 90, thereby allowing position of segmented quarter section 32 to move 90 as shown in FIG. 4 and FIG. 5. Movement of locking cam 10 moves the flat edge 34 90, thus allowing the circumferential surface portion 50 of cam 10 to move the locking plunger pin 12 to move back out of the locking recess 14 of shaft 18 of safety lever 20. As shown in FIG. 5, with the locking plunger pin 12 out of position of preventing rotation of safety lever shaft 18, safety lever 20 can be partially turned or partially rotated to release the safety lever" from its locked position to its un-locked position.
The firearm can now be fired.
While it will be apparent that the embodiment of the invention herein disclosed is well calculated to fulfill the objects above stated, it will be appreciated that the invention is not necessarily limited to pistols, but could be adapted to revolvers, rifles, shot guns and other firearms; and further susceptible to modification, variation and change.
I claim:
1. A locking mechanism for a firearm comprising a safety lever, means for locking said safety lever with a key operable lock, a locking cam having a cam surface, a proper key to rotate said lock and locking cam, a locking plunger whereby movement of the locking cam moves said locking plunger releasing said safety lever, said locking cam having a key operable lock at one end whereby said locking cam is rotated when the proper key is inserted and turned.
2. The invention as described in claim 1 in which said locking cam includes a flat cam surface portion and a curved cam surface portion.
3. A locking mechanism as set forth in claim 1 wherein said locking plunger includes a locking plunger pin and spring, said spring biasing the locking plunger pin against said cam surface portions.
4. A locking mechanism as set forth in claim 1 wherein said safety lever includes a shaft extending from said safety lever, the end of said shaft including a flat semi-circular shoulder surface portion abutting one end of the locking cam, said semicircular shoulder surface portion having a recess portion extending radially whereby said locking plunger is adapted to move in said recess portion of said shouldersurface portion to prevent rotation of said safety lever, thus locking the firearm.

Claims (4)

1. A locking mechanism for a firearm comprising a safety lever, means for locking said safety lever with a key operable lock, a locking cam having a cam surface, a proper key to rotate said lock and locking cam, a locking plunger whereby movement of the locking cam moves said locking plunger releasing said safety lever, said locking cam having a key operable lock at one end whereby said locking cam is rotated when the proper key is inserted and turned.
2. The invention as described in claim 1 in which said locking cam includes a flat cam surface portion and a curved cam surface portion.
3. A locking mechanism as set forth in claim 1 wherein said locking plunger includes a locking plunger pin and spring, said spring biasing the locking plunger pin against said cam surface portions.
4. A locking mechanism as set forth in claim 1 wherein said safety lever includes a shaft extending from said safety lever, the end of said shaft including a flat semi-circular shoulder surface portion abutting one end of the locking cam, said semicircular shoulder surface portion having a recess portion extending radially whereby said locking plunger is adapted to move in said recess portion of said shoulder surface portion to prevent rotation of said safety lever, thus locking the firearm.
US379811A 1973-07-16 1973-07-16 Locking means for firearms Expired - Lifetime US3882622A (en)

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5042185A (en) * 1990-02-21 1991-08-27 Justice Sr Jerry P Semi-automatic pistol safety lock apparatus
US5081779A (en) * 1991-06-11 1992-01-21 Pack Harold R Firearm safety lock
US5125178A (en) * 1990-02-21 1992-06-30 Justice Jerry P Rifle safety lock apparatus
US5235763A (en) * 1991-09-20 1993-08-17 Nosler, Inc. Key-actuated safety for handgun
US5419069A (en) * 1994-07-14 1995-05-30 Mag-Lok, Inc. Firearm locking mechanism
US5465519A (en) * 1994-06-16 1995-11-14 Blue Sky Productions, Inc. Locking assembly and method for a firearm
US5467550A (en) * 1993-11-29 1995-11-21 Mumbleau; Dean W. Passive safety mechanism for firearms
US6141896A (en) * 1998-04-27 2000-11-07 The Marlin Firearms Company Lockable firearm safety
WO2001006198A1 (en) * 1999-07-15 2001-01-25 Ra Brands, L.L.C. Lockable safety for firearms
US6240670B1 (en) 1999-09-03 2001-06-05 Ra Brands, L.L.C. Locking mechanism for firearms
WO2001040732A1 (en) * 1999-12-03 2001-06-07 Sako Oy Locking method and arrangement for a gun
US6389728B1 (en) * 1999-12-17 2002-05-21 Gregory Warren Lundy Personal firearm safety mechanism
US6405470B1 (en) * 2000-06-14 2002-06-18 Travis R. Strahan Firearm safety lock
US6499244B1 (en) 2001-04-20 2002-12-31 Gerald C. Smith Firearm safety lock
US6510639B2 (en) * 2001-01-05 2003-01-28 Mcmoore William A. Firearm safety lock
US6513273B2 (en) * 2000-08-15 2003-02-04 Forjas Taurus S.A. Safety device for a autoloading or automatic pistol
US6523294B2 (en) * 2001-04-12 2003-02-25 Smith & Wesson Corp. Revolver-safety lock mechanism
US6629379B1 (en) * 2001-02-14 2003-10-07 Gerald J. Doiron Trigger lock
US20040200466A1 (en) * 2002-11-25 2004-10-14 Salva Francesc Casas Compressed gas operated pistol
US6871437B1 (en) 2000-10-24 2005-03-29 O.F. Mossberg & Sons, Inc. Apparatus and method for locking firearm in an open position by blocking action
US20050229462A1 (en) * 2004-04-15 2005-10-20 Mcgarry James Pistol with firing pin locking mechanism
EP1649232A2 (en) * 2003-07-01 2006-04-26 Sigarms, Inc. Method and device for providing an integral firearms safety lock mechanism
US20080216376A1 (en) * 2007-03-07 2008-09-11 Dov Pikielny Lockable safety for firearm
US20110219656A1 (en) * 2007-07-25 2011-09-15 Mcgarry James Lockable safety for striker-fired firearm
US20130111796A1 (en) * 2011-11-07 2013-05-09 Megamet Solid Metals, Inc Firearm selector switch locking apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US633939A (en) * 1898-12-30 1899-09-26 Jasper Leander Ackerman Safety-lock for breech-loading guns.
US2945316A (en) * 1958-05-09 1960-07-19 Harrington & Richardson Inc Safety lock for firearms
US3553877A (en) * 1968-06-28 1971-01-12 Emhart Corp Safety lock for firearms
US3673725A (en) * 1970-10-23 1972-07-04 James A Cravener Tamper-proof lock for small arms

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US633939A (en) * 1898-12-30 1899-09-26 Jasper Leander Ackerman Safety-lock for breech-loading guns.
US2945316A (en) * 1958-05-09 1960-07-19 Harrington & Richardson Inc Safety lock for firearms
US3553877A (en) * 1968-06-28 1971-01-12 Emhart Corp Safety lock for firearms
US3673725A (en) * 1970-10-23 1972-07-04 James A Cravener Tamper-proof lock for small arms

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5125178A (en) * 1990-02-21 1992-06-30 Justice Jerry P Rifle safety lock apparatus
US5042185A (en) * 1990-02-21 1991-08-27 Justice Sr Jerry P Semi-automatic pistol safety lock apparatus
US5081779A (en) * 1991-06-11 1992-01-21 Pack Harold R Firearm safety lock
US5235763A (en) * 1991-09-20 1993-08-17 Nosler, Inc. Key-actuated safety for handgun
US5467550A (en) * 1993-11-29 1995-11-21 Mumbleau; Dean W. Passive safety mechanism for firearms
US5465519A (en) * 1994-06-16 1995-11-14 Blue Sky Productions, Inc. Locking assembly and method for a firearm
US5419069A (en) * 1994-07-14 1995-05-30 Mag-Lok, Inc. Firearm locking mechanism
US6141896A (en) * 1998-04-27 2000-11-07 The Marlin Firearms Company Lockable firearm safety
AU764185B2 (en) * 1999-07-15 2003-08-14 R A Brands, Llc Lockable safety for firearms
WO2001006198A1 (en) * 1999-07-15 2001-01-25 Ra Brands, L.L.C. Lockable safety for firearms
US6256917B1 (en) * 1999-07-15 2001-07-10 Ra Brands, L.L.C. Lockable safety for firearms
US6240670B1 (en) 1999-09-03 2001-06-05 Ra Brands, L.L.C. Locking mechanism for firearms
WO2001040732A1 (en) * 1999-12-03 2001-06-07 Sako Oy Locking method and arrangement for a gun
US6675519B2 (en) 1999-12-03 2004-01-13 Sako Oy Locking method and arrangement for a gun
JP2003515721A (en) * 1999-12-03 2003-05-07 サコ オーワイ Gun locking method and device
US6389728B1 (en) * 1999-12-17 2002-05-21 Gregory Warren Lundy Personal firearm safety mechanism
US6405470B1 (en) * 2000-06-14 2002-06-18 Travis R. Strahan Firearm safety lock
US6513273B2 (en) * 2000-08-15 2003-02-04 Forjas Taurus S.A. Safety device for a autoloading or automatic pistol
US6871437B1 (en) 2000-10-24 2005-03-29 O.F. Mossberg & Sons, Inc. Apparatus and method for locking firearm in an open position by blocking action
US6510639B2 (en) * 2001-01-05 2003-01-28 Mcmoore William A. Firearm safety lock
US6629379B1 (en) * 2001-02-14 2003-10-07 Gerald J. Doiron Trigger lock
US6523294B2 (en) * 2001-04-12 2003-02-25 Smith & Wesson Corp. Revolver-safety lock mechanism
US6499244B1 (en) 2001-04-20 2002-12-31 Gerald C. Smith Firearm safety lock
US20040200466A1 (en) * 2002-11-25 2004-10-14 Salva Francesc Casas Compressed gas operated pistol
US7398776B2 (en) * 2002-11-25 2008-07-15 Industrials El Gamo, S.A. Compressed gas operated pistol
EP1649232A4 (en) * 2003-07-01 2010-10-20 Sigarms Inc Method and device for providing an integral firearms safety lock mechanism
EP1649232A2 (en) * 2003-07-01 2006-04-26 Sigarms, Inc. Method and device for providing an integral firearms safety lock mechanism
US20080104874A1 (en) * 2003-07-01 2008-05-08 Sigarms, Inc. Method and device for providing an integral firearms safety lock mechanism
US20050229462A1 (en) * 2004-04-15 2005-10-20 Mcgarry James Pistol with firing pin locking mechanism
US7243453B2 (en) * 2004-04-15 2007-07-17 Sturm, Ruger & Company, Inc. Pistol with firing pin locking mechanism
US20080216376A1 (en) * 2007-03-07 2008-09-11 Dov Pikielny Lockable safety for firearm
US7726059B2 (en) * 2007-03-07 2010-06-01 Dov Pikielny Lockable safety for firearm
US20110219656A1 (en) * 2007-07-25 2011-09-15 Mcgarry James Lockable safety for striker-fired firearm
US8033043B2 (en) * 2007-07-25 2011-10-11 Sturm, Ruger & Company, Inc. Lockable safety for striker-fired firearm
US20130111796A1 (en) * 2011-11-07 2013-05-09 Megamet Solid Metals, Inc Firearm selector switch locking apparatus
US20130111794A1 (en) * 2011-11-07 2013-05-09 Megamet Solid Metals, Inc. Firearm selector switch locking apparatus
US20130111795A1 (en) * 2011-11-07 2013-05-09 Megamet Solid Metals, Inc Firearm selector switch locking apparatus
US8650790B2 (en) * 2011-11-07 2014-02-18 Megamet Solid Metals, Inc. Firearm selector switch locking apparatus
US8650789B2 (en) * 2011-11-07 2014-02-18 Megamet Solid Metals, Inc. Firearm selector switch locking apparatus
US8661722B2 (en) * 2011-11-07 2014-03-04 Megamet Solid Metals, Inc. Firearm selector switch locking apparatus

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