US3352047A - Gun trigger locking device - Google Patents

Gun trigger locking device Download PDF

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Publication number
US3352047A
US3352047A US56405666A US3352047A US 3352047 A US3352047 A US 3352047A US 56405666 A US56405666 A US 56405666A US 3352047 A US3352047 A US 3352047A
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Prior art keywords
trigger
trigger guard
gun
arm
presenting
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Thomas M Mcdonnell
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Thomas M Mcdonnell
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41AFUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A17/00Safety arrangements, e.g. safeties
    • F41A17/46Trigger safeties, i.e. means for preventing trigger movement
    • F41A17/54Protecting-caps for trigger guards; Trigger locking pieces mounted on, or within, the trigger guard
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41AFUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A17/00Safety arrangements, e.g. safeties
    • F41A17/02Key-operated safeties

Description

Nov. 14, 1967 T. M. MCDONNELL GUN TRIGGER LOCKING DEVICE Filed July ll, 1966 *40 \nvem`or ThomosMMDonnell Attorney United States Patent() 3,352,047 GUN TRIGGER LOCKING DEVICE Thomas M. McDonnell, 2918 Madison St., Bellwood, lll. 60104 Filed July 11, 1966, Ser. No. 564,056 2 Claims. (Cl. 42-70) ABSTRACT OF THE DISCLOSURE A gun trigger locking device having a body for attachment to a horizontal section of a gun trigger guard and a pair of laterally spaced, parallel, horizontal arms each presenting a pair of oppositely facing, generally vertical surfaces any one of which can be disposed for engagement with a vertical surface presented by the trigger to prevent accidental movement of the trigger.

This invention relates to safety devices for firearms, and more particularly to a trigger locking device for guns.

The invention comprehends an improved locking device which can be readily clamped on the trigger guard of a gun to prevent the accidental or intentional discharge of the gun.

Although many trigger locking devices have been used in the past, most of them have been complex mechanisms which have several pieces and which require special adjustments in order to apply them to different guns with various trigger guard arrangements. An example of this may be found in United States Letter Patents Nos. 2,503,- 953 and 2,598,924 each of which discloses a multi-piece structure requiring a lateral adjustment when the device is applied to a different gun.

A purpose of this invention is to provide a trigger locking device which requires no special adjustment or movement of parts when applying it to a different trigger guard arrangement from the one on which it was previously applied.

It is a primary object of the invention to provide a locking device of simple design and construction which can be readily attached to the trigger guard of a gun, and which can be readily removed, but only with the aid of a simple tool which is not available to the general public.

Another object of the invention is the provision of a gun trigger locking device which can be used on different types of guns with varying spaces between the triggers and trigger guard sections.

A more specific object of the invention is the provision of a gun trigger locking device having a body with an internal locking screw for attachment to a horizontal section of a gun trigger guard and a pair of laterally spaced, parallel, horizontal arms each presenting a pair of oppositely facing, generally vertical surfaces any one of which can be disposed for engagement with a vertical surface presented by the trigger to prevent the movement of the trigger relative to the trigger guard.

These and other objects of the invention will be apparent from an examination of the following description and drawings, wherein:

FIGURE 1 is an exploded, perspective view of a trigger locking device embodying features of the invention, with the locking screw and key shown removed from the body Of the device;

FIGURE 2 is a side elevational view of the structure illustrated in FIGURE 1;

FIGURE 3 is a transverse, vertical section taken on line 3-3 of FIGURE 1, with a portion of a trigger guard shown clamped in the device; and

FIGURES 4, 5, 6, 7, and 8 are side elevational views similar to FIGURE 2 but of reduced size showing the Idifferent positions in which the device can be applied to different types of trigger guard arrangements.

3,352,047 Patented Nov. 14, 1967 It will be understood that, for purposes of clarity, certain elements have been intentionally omitted from certain views of the drawing where they are illustrated to better advantage in other views.

Referring now to the drawing for a better understanding of the invention, and particularly to FIGURE l, it will be seen that the trigger locking device is a one-piece unit indicated generally at L, with an internal locking screw S which can only beoperated by a special key K in a manner hereinafter described.

The locking device includes a generally vertically disposed body 10 having a threaded, vertical, cylindrical opening 12 extending completely therethrough from top to vbottom for receiving locking screw S.

Still referring to FIGURE 1, it will be seen that screw S has a flat, upwardly facing surface 14 on its upper end and on its lower end has a head with a downwardly extending ridge 16 which is adapted to mate with a complementary groove or channel 18 in the head of key K. Thus, when the screw is in locking position, with its head recessed up in opening 12 of the body, as shown in FIGURE 3, the head of the screw can only be rotated by means of the special key.

Extending upwardly from one side of the body adjacent opening 12 is a vertical wall or support member 20 which is preferably formed integrally with the body and which presents a vertical abutment surface 22 facing the body opening 12.

Extending horizontally from, and preferably formed integrally with, Wall 20 is a first arm 24 disposed to extend over the body and form with the wall and body a horizontally disposed opening or slot 25.

As best seen in FIGURE 3, first arm 24 presents on its underside a downwardly facing, horizontal surface 26 disposed opposite upwardly facing surface 14 of the locking screw. If desired, surface 26 may be provided with serrations 28 to provide a better clamping effect.

At its free or outer end first arm 24 is provided with a preferably integrally formed, depending retaining lip 30 which presents an inwardly facing, vertical abutment surface 32 disposed opposite vertical surface 22 on wall 20.

As best seen in FIGURE 3, first arm 24 presents a pair of rearwardly and forwardly facing generally vertical rear and front surfaces 34 and 36, respectively, which may be inclined slightly, if desired, to converge upwardly.

As best seen in FIGURE 2, vertical wall 20 may be provided with a laterally extending, preferably integrally formed, connecting section or member 38 Which extends at right angles to first arm 24.

As best seen in FIGURE l, there is preferably formed integrally with and extending horizontally outwardly from connecting section 38 a second arm 40 which is spaced from and generally parallel to first arm 24. Second arm 40 also presents a pair of generally vertical, rearwardly and forwardly facing rear and front surfaces 42 and 44 respectively. Although surfaces 42 and 44 are shown in the drawing as -straight up and down vertical surfaces, they may be inclined slightly, as desired.

Operation of the -device is extremely simple and requires no special adjustment when changing from one gun to another because of the relationship of the first and second arms to each other and because each of the arms presents a pair of oppositely facing generally vertical surfaces.

To apply the device to a gun, the device is slipped over the trigger guard with the horizontal or bottom se-ction of the trigger guard being received in slot 25 between the first arm and the body of the device, as shown in FIGURE 3. At the time the device is applied to the trigger guard of the gun the device is positioned in such a manner that any one of the four generally vertical surfaces presented by the two arms is disposed in abutting engagement with a rearwardly facing, generally vertical surface of the trigger itself. Various positions are shown by way of example in FIGURES 4, 5, 6, 7, and 8.

It will be noted that when the device is applied to a gun having two triggers, it is positioned so that two of the four generally vertical surfaces presented by the two arms are each disposed in abutting engagement with one of the rearwardly facing, generally vertical surfaces of each trigger.

After the device has been properly positioned on the trigger guard of the gun, locking screw S is tightened by means of special key K until the bottom section 54 of the trigger guard is clamped tightly between upwardly facing surface 14 of the locking screw and downwardly facing surface 26 of the rst arm.

Vertical abutment surfaces 22 and 32 presented by the vertical wall and lip, respectively, serve as a positive stop means for preventing the device from being forced laterally off the trigger guard once it has been clamped in position. The only way it can thereafter be removed is by loosening the locking screw with the special key.

I claim:

1. In a unitary safety device adaptable for detachable locking connection, Without requiring any mechanical adjustment of parts, to any one of several different types of guns with varying trigger and trigger guard arrangements each having at least one generally vertically disposed trigger surrounded by a looped-shaped trigger guard having a pair of front and rear generally vertical sections interconnected by a bottom generally horizontal section, the combination of:

(a) a body having a vertical opening extending therethrough from top to bottom;

(b) a locking lscrew threadably positioned within said opening and presenting on its upper end an upwardly facing surface;

(c) a support member upstanding from said body at one side thereof;

(d) a rst arm extending horizontally from said support member over said body and presenting on its underside a downwardly facing surface opposite the upwardly facing surface of said locking screw for cooperation therewith to clamp the horizontal section of a gun trigger guard therebetween;

(e) a second arm extending horizontally from said support member in parallel relation with but spaced laterally from said first arm;

(f) said rst and second arms each presenting a pair of oppositely facing, generally vertical front and rear abutment surfaces, any single one of which can be disposed for engagement with a rearwardly facing, generally vertical surface of the gun trigger when the device is clamped on the horizontal section of a gun trigger guard to prevent movement of the trigger relative to the trigger guard;

(g) said first arm having depending from its free outer end` a lip presenting an inner vertical surface operable as an abutment to engage a side edge of the trigger guard horizontal section and thereby prevent the device from being slipped laterally off of said trigger guard when the latter is clamped on the former.

2. A device according to claim 1, wherein said locking screw head has a raised portion which is engageable with a complementary head of a special key to prevent the screw from being rotated by a conventional tool.

References Cited UNITED STATES PATENTS 2,503,953 4/1950 Lind 42-70 3,066,433 12/1962 Rogers et al. 42-70 3,153,874 10/1964 Merrill 42-70 X BENJAMIN A. BORCHELT, Primary Examiner.

Claims (1)

1. IN A UNITARY SAFETY DEVICE ADAPTABLE FOR DETACHABLE LOCKING CONNECTION, WITHOUT REQUIRING ANY MECHANICAL ADJUSTMENT OF PARTS, TO ANY ONE OF SEVERAL DIFFERENT TYPES OF GUNS WITH VARYING TRIGGER AND TRIGGER GUARD ARRANGEMENTS EACH HAVING AT LEAST ONE GENERALLY VERTICALLY DISPOSED TRIGGER SURROUNDED BY A LOOPED-SHAPED VERTICAL SECTIONS INTERA PAIR OF FRONT AND REAR GENERALLY VERTICAL SECTIONS INTERCONNECTED BY A BOTTOM GENERALLY HORIZONTAL SECTION, THE COMBINATION OF: (A) A BODY HAVING A VERTICAL OPENING EXTENDING THERETHROUGH FROM TOP TO BOTTOM; (B) A LOCKING SCREW THREADADLY POSITIONED WITHIN SAID OPENING AND PRESENTING ON ITS UPPER END AN UPWARDLY FACING SURFACE; (C) A SUPPORT MEMBER UPSTANDING FROM SAID BODY AT ONE SIDE THEREOF; (D) A FIRST ARM EXTENDING HORIZONTALLY FROM SAID SUPPORT MEMBER OVER SAID BODY AND PRESENTING ON ITS UNDERSIDE A DOWNWARDLY FACING SURFACE OPPOSITE THE UPWARDLY FACING SURFACE OF SAID LOCKING SCREW FOR COOPERATION THEREWITH TO CLAMP THE HORIZONTAL SECTION OF A GUN TRIGGER GUARD THEREBETWEEN; (E) A SECOND ARM EXTENDING HORIZONTALLY FROM SAID SUPPORT MEMBER IN PARALLEL RELATION WITH BUT SPACED LATERALLY FROM SAID FIRST ARM; (F) SAID FIRST AND SECOND ARMS EACH PRESENTING A PAIR OF OPPOSITELY FACING, GENERALLY VERTICAL FRONT AND REAR ABUTMENT SURFACS, ANY SINGLE ONE OF WHICH CAN BE DISPOSED FOR ENGAGEMENT WITH A REARWARDLY FACING, GENERALLY VERTICAL SURFACE OF THE GUN TRIGGER WHEN THE DEVICE IS CLAMPED ON THE HORIZONTAL SECTION OF A GUN TRIGGER GUARD TO PREVENT MOVEMENT OF THE TRIGGER RELATIVE TO THE TRIGGER GUARD; (G) SAID FIRST ARM HAVING DEPENDING FROM ITS FREE OUTER END, A LIP PRESENTING AN INNER VERTICAL SURFACE OPERABLE AS AN ABUTMENT TO ENGAGE A SIDE EDGE OF THE TRIGGER GUARD HORIZONTAL SECTION AND THEREBY PREVENT THE DEVICE FROM BEING SLIPPED LATERALLY OFF OF SAID TRIGGER GUARD WHEN THE LATTER IS CLAMPED ON THE FORMER.
US3352047A 1966-07-11 1966-07-11 Gun trigger locking device Expired - Lifetime US3352047A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732641A (en) * 1971-10-18 1973-05-15 M Adajian Trigger safety for handguns
US4362145A (en) * 1980-12-22 1982-12-07 Kinetronics Corporation Practice weapon including pellet gun mounted within missile firing tube
US5033218A (en) * 1989-12-22 1991-07-23 Nelson Stephen G Quick-release gun trigger safety device
US5659993A (en) * 1995-08-14 1997-08-26 The United States Of America As Represented By The Secretary Of The Navy Combination pin for attaching trigger assembly and safing small arm
US5704152A (en) * 1996-10-22 1998-01-06 Martin Harrison Secure, quick release safety gun lock
US5713149A (en) * 1996-01-11 1998-02-03 Trigger Block, Inc. Electronic trigger lock
US5724760A (en) * 1997-03-24 1998-03-10 Langner; F. Richard Trigger safety device
US5918492A (en) * 1997-01-29 1999-07-06 Smith & Wesson Trigger guard-engaging gun lock
US6301816B1 (en) 1999-05-27 2001-10-16 Saf-T-Hammer Inc Firearm trigger lock
US6405470B1 (en) * 2000-06-14 2002-06-18 Travis R. Strahan Firearm safety lock
US6550175B2 (en) * 2000-08-07 2003-04-22 Peter Mario Parker User friendly gunlock
US6601332B1 (en) * 2000-02-07 2003-08-05 Child Guard Llc Child safety device, alarm and lock for firearms
US6601331B2 (en) 2000-04-12 2003-08-05 Alfred W. Salvitti Integrated manual safety device for hammerless semiautomatic pistols
US6718678B2 (en) 2000-02-07 2004-04-13 Child Guard Llc Safety device for firearms
US7036258B1 (en) 2002-07-25 2006-05-02 Lanny Ray Lee Passive safety block
EP2498041A3 (en) * 2011-03-10 2015-05-13 TLS System Unternehmergesellschaft Safety device for a firearm

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503953A (en) * 1947-07-21 1950-04-11 Erick W Lind Trigger lock for guns
US3066433A (en) * 1960-02-24 1962-12-04 Carl S Spaw Trigger lock fitting on a trigger guard
US3153874A (en) * 1962-08-01 1964-10-27 Merrill Rex Raymond Hinged barrel firearm with trigger safety means

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503953A (en) * 1947-07-21 1950-04-11 Erick W Lind Trigger lock for guns
US3066433A (en) * 1960-02-24 1962-12-04 Carl S Spaw Trigger lock fitting on a trigger guard
US3153874A (en) * 1962-08-01 1964-10-27 Merrill Rex Raymond Hinged barrel firearm with trigger safety means

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732641A (en) * 1971-10-18 1973-05-15 M Adajian Trigger safety for handguns
US4362145A (en) * 1980-12-22 1982-12-07 Kinetronics Corporation Practice weapon including pellet gun mounted within missile firing tube
US5033218A (en) * 1989-12-22 1991-07-23 Nelson Stephen G Quick-release gun trigger safety device
US5659993A (en) * 1995-08-14 1997-08-26 The United States Of America As Represented By The Secretary Of The Navy Combination pin for attaching trigger assembly and safing small arm
US5713149A (en) * 1996-01-11 1998-02-03 Trigger Block, Inc. Electronic trigger lock
US5704152A (en) * 1996-10-22 1998-01-06 Martin Harrison Secure, quick release safety gun lock
US5918492A (en) * 1997-01-29 1999-07-06 Smith & Wesson Trigger guard-engaging gun lock
US5724760A (en) * 1997-03-24 1998-03-10 Langner; F. Richard Trigger safety device
US6301816B1 (en) 1999-05-27 2001-10-16 Saf-T-Hammer Inc Firearm trigger lock
US6601332B1 (en) * 2000-02-07 2003-08-05 Child Guard Llc Child safety device, alarm and lock for firearms
US6718678B2 (en) 2000-02-07 2004-04-13 Child Guard Llc Safety device for firearms
US6601331B2 (en) 2000-04-12 2003-08-05 Alfred W. Salvitti Integrated manual safety device for hammerless semiautomatic pistols
US6405470B1 (en) * 2000-06-14 2002-06-18 Travis R. Strahan Firearm safety lock
US6550175B2 (en) * 2000-08-07 2003-04-22 Peter Mario Parker User friendly gunlock
US7036258B1 (en) 2002-07-25 2006-05-02 Lanny Ray Lee Passive safety block
EP2498041A3 (en) * 2011-03-10 2015-05-13 TLS System Unternehmergesellschaft Safety device for a firearm

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