US1065342A - Safety device for firearms. - Google Patents

Description

J. M. BROWNING.

SAFETY DEVICE FOR FIREARMS.

APPLICATION FILED MAR. 20, 1913.

Patented June 24, 1913.

F. a z

IN VEN TOR WITNESSES breech block 2.

i sire iin vrclngrj' Tohll uikoin'it may concern: I

Be it known that 1, JOHN M. BROWMNG, a citizen of the United States, resident of Ogden, Utah, have inventedccrtain new and useful Improvements in Safety Devices for Firearms, of which the following is av specification.

My invention relates to a-safety device or safety stop for firearms.

A principal object of the invention is to prevent the locking of the sear in safety position when the hammer is uncooked. Means for accomplishing this is adapted asherein disclosed to a structure in which the sear is free from the hammer after the trigger has been pulled and until the hammer is cocked again. In structures which permit locking of the sear when the hammer is uncooked, and the hammer is free from the sear, it is usually impossible to cock the gun because the sear obstructs the rearward movement of the hammer.

The inventionconsists in instrumentalities and combinations thereof for carrying out the above and other objects, as will be sufficiently explained hereinafter.

The accompanying drawing shows an eX emplifying structure embodying the invention, and it is to be understood that the construction may be varied greatly within the limits of the invention. Figure 1 is a longitudinal section of a gun-frame with inclosed mechanism, sufficient parts being shown to understand the cooperation of the safety device with other essential parts of a firearm structure. Fig. 2 is an enlarged view of a fragment of Fig. 1, showing the safety stop in active posi lion. Fig. 3 is a transverse section in the vertical plane of the stop. Fig. 4 is a perspective view of the safety stop or pin removed from the gun.

Reference character 1 designates a gunframe containing a trigger-plate 1. Slidably mounted on the trigger-plate is a The breech block carries a cocking lug 3 extending down through slot l in the triggenplate. Slidably mounted within the breech-block is the firing pin 5 actuated by spring 6. The rear end of the spring abuts against the rear end '7 of the trigger-plate. Near the rear end the han Iner is provided with a cock-notch 8. In the trigger-plate is pivoted sear 10 adapted to engage the cock notch. The sear is urged to engaging position by spring 11 and 1s irormrivi. B nowmne', .ortoennn umn iif-IBEARFISQ Specification otLet-ters Patent. Pat ne u 3 Application filed March 20, 1913. Serial No. 755,646.

prevented from moving too fa r in that direction by sear member 26; engaging -the the trigger-plate at 15 and carries a pivoted connector 16 cooperating with notch 17 on the sear. Adjacent to the lower end of the sear the safety stop or pin 18 is mounted in a transverse socket 19. For convenience, this safety pin is usually round and is prevented from rotating by a spring-pressed plunger 20 carried in the trigger-plate .and engaging a longitudinal groove 21 in the pin. At each end of this groove is a depression cooperating with the plunger 20 to hold the pin in either engaged or disengaged position. The lower end of the sear is shaped to embrace the pin as at 25. A member 26 of the sear lies normally in front of the pin and another member 27 lies to the rear of the pin when the arm is cocked, as shown in Fig. 2. At a pointopposite the sear, when the pin is in inactive or firing position, the pin is provided with a forwardly arranged depression, cut or groove 30, adapted to cooperate with sear member 26, and at the same point in its length the pin is also provided with an upwardly and rearwardly arranged cut or depression 31 adapted to cooperate with sear member 27.

When the hammer is forward or uncooked, as shown in Fig. 1, it is free from the sear and sear spring 11 holds sear mem- 38F 26 in engagement with cut 30 of the safety pin 18. Therefore, the pin cannot be moved to safety position until released from the sear. lVhen the hammer is cocked, either by hand or by automatic action, the sear 10 engaging with cock notch 18 of the hammer is held down sufficiently, as shown inFig. 2, to free sear member 26 from out 30 of the pin. The pin may then be moved to sa fcty position as shown in F ig. 2. Here the cuts or grooves 30 and 31 of the pin are entirely away from the scar and the iuer by reason of the close engagement of its part 25 with the safety pin and the gun cannot he accidentally discharged either by pulling the trigger or otherwise.

for determining whether the gun is cocked or not, because if itis not cocked the scar will engage cut 30 and prevent the safety pin from being moved to safety position,

moved to safety position, as above described.

safety-pin 18. 'lhe -trigger ld 'lnis pivotedirr sear is locked in engagement with the ham- The mechanism described affords means while if the gun is cocked the pin can be Without the provision of cut 30 the sear will not be locked by the safety pin when the hammer is uncooked and the pin could, therefore, be moved to safety osition, thus locking the sear, and then i it were attempted to. cook the hammer it would be impossible to do so because the sear would not be free to depress and allow the hammer to pass back sufliciently to engage cocknotch 8 with the sear.

I claim:

1. In a firearm, the combination of a ham mer, a sear and a safety pin mounted to move laterally in relation to the sear to lock the same when the hammer is cocked, the

sear and pin being provided with co6perating means to prevent the pin from being moved to safety position when the hammer is not cocked.

2. In a firearm, the combination of a frame, a sear,a hammer free from the sear when uncooked, a safety pin mounted to move laterally in the frame, and means by which the safety pin is engaged with the sear and prevented from movlng to safety position when the hammer is not cooked.'

JOHN M. BROWNING. Witnesses:

L. M. TAYLOR, Murrnnw GALT.

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