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US2979845A - Electromagnetic safety system for firearms - Google Patents

Electromagnetic safety system for firearms Download PDF

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Publication number
US2979845A
US2979845A US784105A US78410558A US2979845A US 2979845 A US2979845 A US 2979845A US 784105 A US784105 A US 784105A US 78410558 A US78410558 A US 78410558A US 2979845 A US2979845 A US 2979845A
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Prior art keywords
safety
safety member
action
stock
firing
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Expired - Lifetime
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US784105A
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Jr William Christiansen
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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
    • F41A17/06—Electric or electromechanical safeties

Definitions

  • This invention provides a safety system for firearms which renders the firing mechanism inoperative at all tunes except when the gun is in normal shooting position with the butt pressed against the shoulder of the shooter.
  • the general principle of operation of this invention in- -volves the use of a source of energy which is connected to the safety mechanism only when the gun is in normal shooting position. In this position, a connection is made which enables the energy source to activate a mechanism
  • the safety system does not involve any projecting external mechanical actuating members which could be accidentally .moved by contact of the gun with some solid object.
  • the internal mechanical components of the mechanism are preferably so balanced that the efiect of inertia forces will notbe sufficient to accidentally place the mechanism in firing condition.
  • Figure l presents a side elevation of a single-barrel shotgun embodying the preferred form of the invention.
  • Figure 2 presents a partial section on an enlarged scale from that of Figure 1, and showing the internal action mechanism of the gun illustrated in Figure 1.
  • Figure 3 presents a view of the equipment attached to the garment of the shooter, according to the preferred form of the invention.
  • Figure 4 presents a modified form of the invention involving' permanent magnetic forces.
  • Figure 5 presents a further modified form of the invention.
  • the shotgun indicated generally at is of standard construction, except for the modification necessary for the installation of the safety mechanism described herein.
  • the trigger guard 11 protects the trigger 12, and the stock 13 extends to the rear in the usual fashion where it terminates at the butt where the contacts 14 and 15 are located. These contacts are separated by the insulated butt plate 16, and wires shown in dotted lines at 17 extend from the contacts 14 and 15. respectively, to the solenoid 18. A long hole 19 provides place.
  • the frame 20 provides for the pivotal mounting of the trigger 12 on the pin 21, and the frame also includes the transverse plate 22.
  • the firing pin 23 operates through an opening in the plate 22, andis projected toward the cartridge (not shown) by the spring 24.
  • the sear member 25 restrains the firing pin 23 as long as it is engaged with the notch 26, where it is held by the portion 27 of the trigger 12 until firing takes Rotation of the trigger in a clockwise direction disengages the portion 27 from the sear member 25, which permits the sear to move downwardly under the action of the conventional biasing (not shown) to disengage the sear from the notch 26.
  • a safety member 28 of magnetic material is pivotally mounted on the frame 20 on the pin 29, and prevents clockwise rotation of the trigger when in the full line position shown in Figure 2.
  • the solenoid 18 When the solenoid 18 is energized, a field of magnetic flux is created which tends to draw the upper portion of the safety member 28 toward it to create a closed magnetic circuit across the ends of the horseshoe-shaped core 30. This attraction draws the safety member 28 into the dotted line position shown in Figure 2, and releases the trigger.
  • a convenient method for mounting the solenoid and core assembly is possible because of the presence of the transverse plate 22.
  • a suitable aperture is provided in the plate 22 for the passage of the reduced portion 31, and this is riveted over as shown at 32 to complete the attachment.
  • the light spring 33 returns the safety member 28 to the position shown in full lines.
  • the un-energized position is normal, and persists until the gun is placed in the normal shooting position illustrated in Figure 1, in which the butt of the gun is pressed against the shoulder of the shooter. Under these conditions, contact is made between the contacts 14 and 15 and the conductive patches of screen 34 and 35 on the surface of the garment 36, and the screen patches are connected to the opposite poles of the battery 37 through the terminals 38 and 39. Under these conditions, the voltage established by the battery between the screen patches 34 and 35 is applied to the wires 17, which are received under the contact points 14 and 15, respectively,
  • the garment 36 be either an auxiliary piece attached to a hunting jacket, or a part of the hunting jacket itself.
  • the wires 40 and 41 extending from the battery terminal clip can be conveniently concealed in the garment, with the battery placed in a pocket where it is convenient for changing.
  • the modification illustrated in Figure 4 involves a somewhat different source of energy.
  • the safety mechanism is adapted to respond to a field of magnetic flux.
  • a conventional horseshoe magnet can be placed in the position of the patches 34 and 35, which serves to attract the block 42 of magnetic material and thereby move the actuating rod 43.
  • This stock 44 and the remainder of the gun can be of similar construction to that illustrated in Figure l, with the butt plate 45 being conventional.
  • the weight of the block 42 creates the possibility that inertia forces resultingfrom jostling the gun might accidentally place the gun in unsafe condition.
  • a counterbalance assembly is provided which is mounted on the bracket 46.
  • This bracket is essentially U-shaped in cross section, and provides bearings for the pivot pin 47.
  • the arm 48 is pivotally mounted at this point, and is also pivotally connected to the actuating rod 43 at 49.
  • the opposite end of the counterbalance is turned to form a U-shaped section embracing the block 42, for the dual purpose of creating weight and for stabilizing the end of the block 42.
  • the weight of the counterbalance and the pivot-position can be established such that it exactly counterbalances the inertia forces effective on the block 42.
  • the trigger 50 is intercepted by the safety catch 51, which is pivotally mounted on the triggerguard 52 at the pin 53.
  • the catch 51 is of magnetic material, and is acted upon by the magnetic flux created by the solenoid 54.
  • the solenoid 54 is energized through the wires 55, the catch 51 is drawn downward against the action of the spring 56 to the point that the trigger 50 is released.
  • a system for visually indicating the safe condition of the action particularly when the concealed safety mechanism of Figures 1, i2, and 4 is used.
  • a signal 57 is preferably secured to the safety member 28, and is visible through an aperture in the frame 22 covered by a window 58.
  • a prism member 59 is positioned to deviate the light rays to render the position of the signal 57 visible from the normal sighting position of the eye.
  • a safety mechanism comprising: a safety member movably mounted in said frame, and having a portion disposed, in a certain position of said safety member, to intercept said action to prevent firing thereof, said safety member being movable out of said position to permit firing of said action; biasing means urging said safety member to said certain position; electromagnetic actuating means mounted on said frame and adapted, when energized, to move said safety member from said certain position against the effect of said biasing means; spaced contact means exposed on the butt of said stock; electrically conductive wires connecting said spaced contact means to said electromagnetic actuating means, respectively, to establish a closed circuit between said spaced contact means including said electromagnetic actuating means; and a garment having spaced contact means normally in closedcircuit relationship and disposed to engage respectively said spaced contact means on the butt of said stock when said firearm is in normal shooting position; battery means disposed in said garment connected to establish
  • a safety mechanism comprising: a safety member movably mounted in said frame, and having a portion disposed, in a certain pcsition of said safety'member, to intercept said action to prevent firing thereof, said safety member being movable out of said position to permit firing of said action; biasing means urging said safety member to said certain position; electromagnetic actuating means mounted on said frame and adapted, when energized, to move said safety member from said certain position against the effect of said biasing means; spaced contact means exposed on the butt of said stock; electrically conductive wires connecting said spaced contact means to said electromagnetic actuating means, respectively, to establish a closed circuit between said spaced contact means including said electromagnetic actuating means; and a garment having spaced contact means normally in closed-circuit relationship and disposed to engage respectively said spaced contact means on the butt of said stock when said firearm is in normal shooting position; and battery means disposed
  • a safety mechanism comprising: a safety member movably mounted in said frame, and having a portion disposed, in a certain position of said safety member, to intercept said action to prevent firing thereof, said safety member being movable out of said position to permit firing of said action; biasing means urging said safety member to said certain position; electromagnetic actuating means mounted on said frame and adapted, when energized, to move said safety member from said certain position against the effect of said biasing means; spaced contact means on the butt of said stock; electrically conductive wires connecting said spaced contact means to said electromagnetic actuating means, respectively, to establish a closed circuit between said spaced contact means including said electromagnetic actuating means; and a garment having contact means normally in closedcircuit relationship and disposed to engage said spaced contact means on the butt of said stock when said .firearm is in normal shooting position; and battery means connected to supply energy to the closed circuit including
  • a safety mechanism comprising: a safety member movably mounted in said frame, and having a portion disposed, in a certain position of said safety member, to intercept said action to prevent firing thereof, said safety member being movable out of said position to permit firing of said action; biasing means urging said safety member to said certain position; a garment having magnetic means located in the area normally occupied by the butt of a gunstock when in shooting position; and means mounted within said stock responsive to the presence of a field magnetic flux generated by said magnetic means to move said safety member from said'certain position against the effect of said biasing means.

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  • General Engineering & Computer Science (AREA)
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Description

April 18, 1961 w. CHRISTIANSEN, JR 2,979,845
ELECTROMAGNETIC SAFETY SYSTEM FOR FIREARMS Filed Dec. 31, 1958 INVENTOR. J
WlLLlAM CHRISTIANSEN 1.1ru'ted States -which removes the safety from safe position.
fments illustrated in the accompanying drawing.
I ELECTROMAGNETIC SAFETY SYSTEM FOR FIREARMS 'William Christianse n, Jr., 115 N. Division, Lowell, Mich.
Filed use. 31, 1958, Ser. No. 734,105
4 Claims. or. 42-70 "This invention provides a safety system for firearms which renders the firing mechanism inoperative at all tunes except when the gun is in normal shooting position with the butt pressed against the shoulder of the shooter. The
number of shooting accidents every year testifies to the inadequacy of manually-operated safety devices. En-
tirely apart from sheer carelessness, situations frequently institutions.
The general principle of operation of this invention in- -volves the use of a source of energy which is connected to the safety mechanism only when the gun is in normal shooting position. In this position, a connection is made which enables the energy source to activate a mechanism The safety system does not involve any projecting external mechanical actuating members which could be accidentally .moved by contact of the gun with some solid object. The internal mechanical components of the mechanism are preferably so balanced that the efiect of inertia forces will notbe sufficient to accidentally place the mechanism in firing condition.
The several features of the invention will be analyzed in detail through a discussion of the particular embodi- In the drawing:
Figure lpresents a side elevation of a single-barrel shotgun embodying the preferred form of the invention.
Figure 2 presents a partial section on an enlarged scale from that of Figure 1, and showing the internal action mechanism of the gun illustrated in Figure 1. t
Figure 3 presents a view of the equipment attached to the garment of the shooter, according to the preferred form of the invention. I
Figure 4 presents a modified form of the invention involving' permanent magnetic forces.
Figure 5 presents a further modified form of the invention.
Referring to Figure 1, the shotgun indicated generally at is of standard construction, except for the modification necessary for the installation of the safety mechanism described herein. The trigger guard 11 protects the trigger 12, and the stock 13 extends to the rear in the usual fashion where it terminates at the butt where the contacts 14 and 15 are located. These contacts are separated by the insulated butt plate 16, and wires shown in dotted lines at 17 extend from the contacts 14 and 15. respectively, to the solenoid 18. A long hole 19 provides place.
. 2 for the passage for the wires 17 through the length of the stock 13.
Referring to Figure 2, the frame 20 provides for the pivotal mounting of the trigger 12 on the pin 21, and the frame also includes the transverse plate 22. The firing pin 23 operates through an opening in the plate 22, andis projected toward the cartridge (not shown) by the spring 24. The sear member 25 restrains the firing pin 23 as long as it is engaged with the notch 26, where it is held by the portion 27 of the trigger 12 until firing takes Rotation of the trigger in a clockwise direction disengages the portion 27 from the sear member 25, which permits the sear to move downwardly under the action of the conventional biasing (not shown) to disengage the sear from the notch 26.
A safety member 28 of magnetic material is pivotally mounted on the frame 20 on the pin 29, and prevents clockwise rotation of the trigger when in the full line position shown in Figure 2. When the solenoid 18 is energized, a field of magnetic flux is created which tends to draw the upper portion of the safety member 28 toward it to create a closed magnetic circuit across the ends of the horseshoe-shaped core 30. This attraction draws the safety member 28 into the dotted line position shown in Figure 2, and releases the trigger. A convenient method for mounting the solenoid and core assembly is possible because of the presence of the transverse plate 22. A suitable aperture is provided in the plate 22 for the passage of the reduced portion 31, and this is riveted over as shown at 32 to complete the attachment.
When the solenoid 18 is not energized, the light spring 33 returns the safety member 28 to the position shown in full lines. The un-energized position is normal, and persists until the gun is placed in the normal shooting position illustrated in Figure 1, in which the butt of the gun is pressed against the shoulder of the shooter. Under these conditions, contact is made between the contacts 14 and 15 and the conductive patches of screen 34 and 35 on the surface of the garment 36, and the screen patches are connected to the opposite poles of the battery 37 through the terminals 38 and 39. Under these conditions, the voltage established by the battery between the screen patches 34 and 35 is applied to the wires 17, which are received under the contact points 14 and 15, respectively,
and to the solenoid 18. The gun is then placed in firing position.
It is preferable that the garment 36 be either an auxiliary piece attached to a hunting jacket, or a part of the hunting jacket itself. The wires 40 and 41 extending from the battery terminal clip can be conveniently concealed in the garment, with the battery placed in a pocket where it is convenient for changing.
The modification illustrated in Figure 4 involves a somewhat different source of energy. In this situation, the safety mechanism is adapted to respond to a field of magnetic flux. A conventional horseshoe magnet can be placed in the position of the patches 34 and 35, which serves to attract the block 42 of magnetic material and thereby move the actuating rod 43. This stock 44 and the remainder of the gun can be of similar construction to that illustrated in Figure l, with the butt plate 45 being conventional. The weight of the block 42 creates the possibility that inertia forces resultingfrom jostling the gun might accidentally place the gun in unsafe condition. To avoid this situation, a counterbalance assembly is provided which is mounted on the bracket 46. This bracket is essentially U-shaped in cross section, and provides bearings for the pivot pin 47. The arm 48 is pivotally mounted at this point, and is also pivotally connected to the actuating rod 43 at 49. The opposite end of the counterbalance is turned to form a U-shaped section embracing the block 42, for the dual purpose of creating weight and for stabilizing the end of the block 42. The weight of the counterbalance and the pivot-position can be established such that it exactly counterbalances the inertia forces effective on the block 42.
Referring to Figure 5, a further modification is shown in which the trigger 50 is intercepted by the safety catch 51, which is pivotally mounted on the triggerguard 52 at the pin 53. The catch 51 is of magnetic material, and is acted upon by the magnetic flux created by the solenoid 54. When the solenoid 54 is energized through the wires 55, the catch 51 is drawn downward against the action of the spring 56 to the point that the trigger 50 is released.
It is preferable to incorporate a system for visually indicating the safe condition of the action, particularly when the concealed safety mechanism of Figures 1, i2, and 4 is used. Referring to Figure 2, a signal 57 is preferably secured to the safety member 28, and is visible through an aperture in the frame 22 covered by a window 58. A prism member 59 is positioned to deviate the light rays to render the position of the signal 57 visible from the normal sighting position of the eye.
The particular embodiments of the present invention which have been illustrated and discussed herein are for illustrative purposes only and are not to be considered as a limitation upon the scope of the appended claims. In these claims, it is my intent to claim the entire invention disclosed herein, except as I am limited by the prior art.
I claim:
1. In a safety system for a firearm having a frame and an action including a trigger and a firing pin, and also having a stock, a safety mechanism comprising: a safety member movably mounted in said frame, and having a portion disposed, in a certain position of said safety member, to intercept said action to prevent firing thereof, said safety member being movable out of said position to permit firing of said action; biasing means urging said safety member to said certain position; electromagnetic actuating means mounted on said frame and adapted, when energized, to move said safety member from said certain position against the effect of said biasing means; spaced contact means exposed on the butt of said stock; electrically conductive wires connecting said spaced contact means to said electromagnetic actuating means, respectively, to establish a closed circuit between said spaced contact means including said electromagnetic actuating means; and a garment having spaced contact means normally in closedcircuit relationship and disposed to engage respectively said spaced contact means on the butt of said stock when said firearm is in normal shooting position; battery means disposed in said garment connected to establish a voltage between said spaced contact means on said garment;-and visual indicating means for registering the position of said safety member, including prism means rendering a portion of said safety member visible to the eye through an aperture in said firearm from normal shooting eye position. i
2. In a safety system for a firearm having a frame and an action including a trigger and a firing pin, and also having a stock, a safety mechanism comprising: a safety member movably mounted in said frame, and having a portion disposed, in a certain pcsition of said safety'member, to intercept said action to prevent firing thereof, said safety member being movable out of said position to permit firing of said action; biasing means urging said safety member to said certain position; electromagnetic actuating means mounted on said frame and adapted, when energized, to move said safety member from said certain position against the effect of said biasing means; spaced contact means exposed on the butt of said stock; electrically conductive wires connecting said spaced contact means to said electromagnetic actuating means, respectively, to establish a closed circuit between said spaced contact means including said electromagnetic actuating means; and a garment having spaced contact means normally in closed-circuit relationship and disposed to engage respectively said spaced contact means on the butt of said stock when said firearm is in normal shooting position; and battery means disposed in said garment connected to establish a voltage between said spaced contact means on said garment.
3. In a safety system for a firearm having a frame and an action including a trigger and a firing pin, and also having a stock, a safety mechanism comprising: a safety member movably mounted in said frame, and having a portion disposed, in a certain position of said safety member, to intercept said action to prevent firing thereof, said safety member being movable out of said position to permit firing of said action; biasing means urging said safety member to said certain position; electromagnetic actuating means mounted on said frame and adapted, when energized, to move said safety member from said certain position against the effect of said biasing means; spaced contact means on the butt of said stock; electrically conductive wires connecting said spaced contact means to said electromagnetic actuating means, respectively, to establish a closed circuit between said spaced contact means including said electromagnetic actuating means; and a garment having contact means normally in closedcircuit relationship and disposed to engage said spaced contact means on the butt of said stock when said .firearm is in normal shooting position; and battery means connected to supply energy to the closed circuit including all of said contact means when engaged.
4. In a safety system for a firearm having a frame and an action including a trigger and a firing pin, and also having a stock, a safety mechanism comprising: a safety member movably mounted in said frame, and having a portion disposed, in a certain position of said safety member, to intercept said action to prevent firing thereof, said safety member being movable out of said position to permit firing of said action; biasing means urging said safety member to said certain position; a garment having magnetic means located in the area normally occupied by the butt of a gunstock when in shooting position; and means mounted within said stock responsive to the presence of a field magnetic flux generated by said magnetic means to move said safety member from said'certain position against the effect of said biasing means.
References Cited in the file of this patent UNITED STATES PATENTS 2,273,204 Kneubuehl Feb. .17, 1942 2,401,034 Young May 28, 1946 2,661,561 Magaro 'Dec. 8, 1953
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978604A (en) * 1974-12-09 1976-09-07 Smith Joseph E Trigger inhibiting mechanism
US4067132A (en) * 1974-12-09 1978-01-10 Smith Joseph E Safety device for preventing the unauthorized firing of a weapon
US4141166A (en) * 1977-02-03 1979-02-27 Schultz Timothy R Gun safety device
US4315111A (en) * 1980-05-29 1982-02-09 Thomas Charles A Hearing aid with remote momentary shut off switch
US5016376A (en) * 1989-10-20 1991-05-21 Pugh Kenneth J Magnetic actuated firearms locking mechanism
US5123193A (en) * 1989-10-20 1992-06-23 Pugh Kenneth J Magnetic actuated firearms locking mechanism for shoulder mountable weapons
US5433028A (en) * 1994-06-24 1995-07-18 Novak; Vicente N. Gun's trigger locking mechanism
WO2005024335A1 (en) * 2003-09-04 2005-03-17 Michael Raymond Pitt Shooting device
US20050217651A1 (en) * 2004-01-17 2005-10-06 William Bednar Crossbow with stock safety mechanism
US20220178640A1 (en) * 2020-09-18 2022-06-09 Rustin B. Penland Firearm frame with trigger lock device, system, or method
US20230408218A1 (en) * 2022-06-16 2023-12-21 DQD Mounting Systems, LLC Firearm Safety Device and Rack Incorporating Safety Device
US11892258B2 (en) 2019-11-26 2024-02-06 Trigger Sync Industries Ltd. Devices, systems and methods for facilitating synchronized discharge of firearms

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2273204A (en) * 1940-03-21 1942-02-17 Herman J Kneubuehl Safety mechanism for firearms
US2401034A (en) * 1940-06-24 1946-05-28 Charles A Young Firearm
US2661561A (en) * 1951-10-12 1953-12-08 Fannie Ricci Safety lock for firearms

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2273204A (en) * 1940-03-21 1942-02-17 Herman J Kneubuehl Safety mechanism for firearms
US2401034A (en) * 1940-06-24 1946-05-28 Charles A Young Firearm
US2661561A (en) * 1951-10-12 1953-12-08 Fannie Ricci Safety lock for firearms

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978604A (en) * 1974-12-09 1976-09-07 Smith Joseph E Trigger inhibiting mechanism
US4067132A (en) * 1974-12-09 1978-01-10 Smith Joseph E Safety device for preventing the unauthorized firing of a weapon
US4141166A (en) * 1977-02-03 1979-02-27 Schultz Timothy R Gun safety device
US4315111A (en) * 1980-05-29 1982-02-09 Thomas Charles A Hearing aid with remote momentary shut off switch
US5016376A (en) * 1989-10-20 1991-05-21 Pugh Kenneth J Magnetic actuated firearms locking mechanism
US5123193A (en) * 1989-10-20 1992-06-23 Pugh Kenneth J Magnetic actuated firearms locking mechanism for shoulder mountable weapons
US5433028A (en) * 1994-06-24 1995-07-18 Novak; Vicente N. Gun's trigger locking mechanism
WO1996000372A1 (en) * 1994-06-24 1996-01-04 Vicente Nicolas Novak Gun's trigger locking mechanism
GB2420171A (en) * 2003-09-04 2006-05-17 Michael Raymond Pitt Shooting device
US20070186457A1 (en) * 2003-09-04 2007-08-16 Pitt Michael R Shooting device
WO2005024335A1 (en) * 2003-09-04 2005-03-17 Michael Raymond Pitt Shooting device
GB2420171B (en) * 2003-09-04 2006-11-15 Michael Raymond Pitt Remote controlled shooting device
US7779824B2 (en) 2004-01-17 2010-08-24 William Bednar Crossbow with stock safety mechanism
US7281534B2 (en) 2004-01-17 2007-10-16 Hunter's Manufacturing Company, Inc. Crossbow with stock safety mechanism
US20070261687A1 (en) * 2004-01-17 2007-11-15 Hunter's Manufacturing, Inc. Crossbow with stock safety mechanism
US20050217651A1 (en) * 2004-01-17 2005-10-06 William Bednar Crossbow with stock safety mechanism
US11892258B2 (en) 2019-11-26 2024-02-06 Trigger Sync Industries Ltd. Devices, systems and methods for facilitating synchronized discharge of firearms
US12209828B2 (en) 2019-11-26 2025-01-28 Trigger Sync Industries Ltd. Devices, systems and methods for facilitating synchronized discharge of firearms
US20220178640A1 (en) * 2020-09-18 2022-06-09 Rustin B. Penland Firearm frame with trigger lock device, system, or method
US12152847B2 (en) * 2020-09-18 2024-11-26 Rustin B. Penland Firearm frame with trigger lock device, system, or method
US20230408218A1 (en) * 2022-06-16 2023-12-21 DQD Mounting Systems, LLC Firearm Safety Device and Rack Incorporating Safety Device
US11852430B1 (en) * 2022-06-16 2023-12-26 DQD Mounting Systems, LLC Firearm safety device and rack incorporating safety device

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