To all whom it may concern: Be it known that I, JOHN M. BROWNING, a citizen of the United States, residing in Ogden, in the county of Weber and State of Utah, have invented certain new and useful Improvements in Safety Devices for Firearms, of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof. The invention relates to safety devices for breech loading firearms generally, and it is more especially applicable to automatic firearms in which the .several operations—such as the opening of the breech after firing a shot, the ejection of the empty cartridge shell, the cocking of the hammer, the presentation and introduction of a loaded cartridge into the chamber of the barrel, and the closing of the breech—are automatically effected by the pressure in the barrel of the powder gases generated by the explosion of the cartridge.
The main object of the invention is to provide for the firearms of this class, in which for safety in handling and carrying the members of the firing mechanism, with the exception of the trigger, are entirely enclosed and concealed in the arm, a safety device for at will and readily locking the breech mechanism in its closed forward position, and at the same time positively locking the concealed firing mechanism when cocked; or for at will and as readily unlocking these parts, and thereby adapting the arm for instant use. For safety and convenience, while examining and cleaning the arm and while charging it with cartridges, said safety device shall, further, be adapted for at will locking the breech mechanism in its open rearward position; or for as readily unlocking said mechanism and allowing the same to close. Another object of the invention is to produce a safety device which shall be simple and inexpensive in construction, strong, reliable and safe under all conditions of use. These objects are attained by mechanism of simple and practical construction, which is efficient, perfectly safe in use and not 1 liable to get out of order. The invention is shown herein as embodied in a gas operated magazine pistol, but it will be understood that the invention is applicable to other firearms.
Therefore it is not intended to restrict the present invention to. a. magazine pistol, nor to any particular kind of firearm. In the accompanying drawings, wherein is illustrated an embodiment of the invention, Figure 1 is a left hand side elevation of the pistol with the breech closed, and with the safety device turned to the operative locking position; the non-operative unlocked position of the same being indicated in dotted lines. Fig. 2 is an elevation similar to Fig. 1, but partly in section and with the breech open, and with the safety device turned to lock the breech slide in the open rear position. Fig. 3 is a longitudinal section of the upper rear portion of the pistol, with the breech closed and the firing mechanism cocked and locked by the safety device. Fig. 4 is a section similar to Fig. 3, but with the safety device turned to unlock the breech slide and the firing mechanism. Fig. 5 shows detail views of the safety locking lever detached, respectively at 1 a side elevation, at 2 a top view, and at 3 a front view. Fig. 6 is a side elevation of the upper rear portion of the frame’ of the pistol detached, with the breech slide and other mechanisms removed.
Fig. 7 is, a side view of the rear portion of the breech slide detached. Fig. 8 is a bottom view of the rear portion of the breech slide detached. Similar letters refer to similar parts throughout the several views. In the pistol represented in the drawings a is the frame, 7, the barrel, and c the breech slide. The top of the frame a, upon the I forward portion of which the barrel b is mounted, forms the seat for the reciprocating breech slide c. In rear of the barrel b, the upper portion of the frame forms the receiver and below it is the grip or handle al, preferably made integral with the frame, and the hollow inside’ of which forms the seat for the reception of the cartridge magazine d, which is a tube holding a number of cartridges one upon the other resting upon a spring pressed follower, the magazine is inserted into the grip from below, so that its top communicates with the receiver and with the rear of the barrel, and at each opening.