US2453897A

US2453897A - Safety for self-loading firearms

Info

Publication number: US2453897A
Application number: US452642A
Authority: US
Inventors: Eklund Hans Erik
Original assignee: Ljungmans Verkstader AB
Current assignee: Wayne Fueling Systems Sweden AB
Priority date: 1941-06-27
Filing date: 1942-07-28
Publication date: 1948-11-16
Anticipated expiration: 1965-11-16
Also published as: CH229631A; GB561016A

Description

H. E. YEKLUND Nov'. 16, -1948.

SAFETY FOR SELF-LOADING FVIREARMS' Filed July 28, 1942 Patented Nov. 16, 1948 UNITED l STATES PATENT* oFFlCE E SAFETY Fon SELF-LOADING FIREARMS e Hans `Erikv Eklund, Malmo, Sweden, assigner to Aktiebolaget Ljungman Verkstder, Malmo, Sweden, a corporationl of `Sweden l Y Application July 28, 1942, `Serial No. 45.22642A y 4 n v l In Sweden June 27, 1941 A 7 Y Section 1, Public Law 690, August 8, 194.6 i' i f 'Patent expires June 27, 1961 'My present invention iire arms having a receiver and a rear member forming a rear wall on said receiver. The main object of the inventionl is to provide'for'a suitable disposition of the rear member and the safety mechanism ofthe fire arm. i i we According to the invention the safety member isconnected with the rear member and is removv` able therewith as a unit from the receiver, means being provided to lockf'said unit .to the'receiver in its mounted position. By combining the rear member and the safety'fmechanismit is'possible to utilize the safety mechanism to-removably lock the'rear member in its mounted position; Furtherit is possible due to this combination to construct the 'safetymmber in asimple manner to control the loading or bolt mechanism off the firearm. Because the safety memberca'n be set to maintain the rear member in its mounted posi-` tion or to release saidmember, the bolt mechanism will be easily available for dismounting, i; e. by removing the rear member. I I

fThe invention further consists inthe novel details and combination of parts, more fullyhereinafterA disclosed and particularly pointedfoutlin I the claims.

Referring tothev accompanying drawings forming part of this specification and illustrating the application of the invention to a self-loading rifle, t f

Fig. 1 is a left side elevation ofthe completely assembled rifle with the bolt mechanism in the closed position;

Fig. 2 is a longitudinal sectional view of `a fragment of the rie at the rear portion of the receiver; Y u Fig. 3 isa similar view to Fig. 2 but showing the safety member in a different position;

t fFig. 4 is a transverse sectional view on the line 4-14 ofFiaZ; f

. Figs. 5 and 6 are similar sectional views on the line 5-5 in Fig. 2 and illustrate two different positions ofthe safety; and Y z i Fig. :'visa'sectional view onthe planeof line 1-1 in Fig 4 but showing the locking flange in the position in whichthe rear member can be removed. 'f

Inthe illustrative construction of the drawing, referring rst to Fig 1, the barrel is indicated atl, the stock at 2, the fore stock at`3,` theret ceiver orframe at 4 and a strap, holding the "fore stock at 5. With reference also to Fig. 2 the trigger guard plate is designated by 5, a rear clamp screw for such plate by 8, the trigger by I 0 and the trigger guard proper with I 2.

sfolaims. (C1. 42-70) relates to self-loading I The rear member referredt'o above forms a rear wall for the receiver'cavity I1, which contains the bolt mechanisnn The detailed construction .of said mechanism forms n-o part of the present invention but van element thereof' is shown at I9 in Figs. 1 and 3. Thetop of the receiver cavity is confined by a protecting cover or slide I6 which isl slidably mounted upon the receiver. The rear member I4 ismOunted -removabli7 on the receier and to this end it is provided with a cylindrical boss I8 which is fitted removably in a corresponding transversely arranged cylindrical socket 28 of the receiver, the axis of the socket being vertical when the rifle is in normal iiring position. The safetymember 22 of the fire arm is carried by the rear member which to this end has a bore extending Avaxially through the cylindrical boss I8V and through which the safety `pin 24 is carried. The safety member is formed as a lock to maintainthe rear member in the receiver. At itslower end the safetyrpin 24 has a locking flange 26 which in a certain position engages a groove 28 formed in a lateral marginal'flange 29 on the guard plate-6 but in another positionV is moved out of this groove to permit elevation ofthe `rear member as will be more .particularly described hereinbelow.

At thelowerend the safetypin 24 has a notch 3.0 beginning at the end surface thereof and which when the safetyY lever or handle 32 secured to the safety pin Vtakes the position illustrated in Figs. 2, 4 and 5 is located opposite to a projection 34 which extend'srearward'from'thetrigger I0 and in'such position permits the trigger `to be actuated `for ring the arm; in other words the safety member then is in its unlocking position, as illustrated in Fig. 2. In this position the safety lever 32 is turned over to the right in Fig. 4. If itis turned over half of a revolution from the latter position, as illustrated in Figs. 3; @andv 6 the rieis locked because the lower end surface of the safety pin then stands opposite to theprojection34 and thereby blocks the trigger as illustrated in Fig. 3. In consequence, the safety member here has also the usual function of securing the re arm to prevent accidental firing. 1

However, the safety member has also the object to control the loading of the fire arm to a certain extent. To this end it has a rounded iiange 36, situated on a level with the safety lever 32 and having aiiattened surface 38 at one side thereof. This flange is extended laterally through an aperture 40 in the rear member so that its peripheral edge lies substantially flush with the front of the rear member. Opposite 3 to the aperture 46l there is a pawl 42 which is pivoted on a horizontal pin 4l) in the protecting cover I6 and has a rear projection 46 which is pressed against the flange 36 by the spring 48. In the position shown in Figs. 2 and 5 of the safety member, the projection 46 engages the arc shaped periphery of the flange 36, and the pawl is held in its elevated position. This corresponds to unlocked rifle (Figs. 2 and 5). The pawl 42 is intended to cooperate in a certain manner with the bolt mechanism of the rifle, but is now maintained in its elevated position out of any actuation thereof. On the other hand, if the rsafety lever 32 is turned about half of a revolution to the position illustrated in Figs. 3 and 6 theattened surface 38 of the flange 36 cornes opposite to the aperture 40 and the projection 46 so that this projection permits the pawl to move down to a certain extent. The pawl then takes a locking position in which it may have influence on the bolt mechanism. In this position the pawl can in fact catch hold of the element I9 of the bolt mechanism to keep said `mechanism in its open'position. In Fig. 3 the p'awl 42 engages a notch 2I'in the element I9. Inv any automatic or semi-automatic lire arms of similar type having a locking member 'or action slide which is actuated by a powder gas actuated member operating the loading mechanism, and in turn actuates the bolt of the re arm, the pawl can be constructed to maintain this locking member yor acably mounted in the rear member; said safety member including safety means operable to block actuation of said firing mechanism upon adjustment of said safety member to one position, means operable upon adjustment of said safety member to render said safety means inactive and to actuate said spring pressed latch to inoperative position, and means carried by said safety member and operative in both of said adjust- `ments of the safety member to lock said rear member against removal from said receiver.

2. In a self-loading re arm, a receiver, a firing mechanism within said receiver, a rear member removably mounted on said receiver to form a rear wall thereof, a safety member adjustably lcarried by said rear member and formed with tion slide `and thereby keep the mechanism in its open position.

Because the pawl 42 is journalled in the protecting cover or slide I6, it is carried forwardly with the cover I6 when the latter is moved forwardly. The rear member i4 may be lifted from the receiver when the cover or slide I6 is manually moved forwardly; and the cover I6 and bolt mechanism I9 may then be removed as a unit from the receiver. Since the rear member may be removed only when the safety member takes a certain position the safety mechanism is thus also a key, which enables or prevents the mechanism from being dismounted.

In the unlocked as well as the locked position of the safety mechanism the locking flange 26 engages the notch 28 in the guard plate and blocks the rear member to the receiver. The notch 30 situated in the safety pin 24 and also extending out through they flange 26 and forming an opening therein is directed forward and rearward respectively as illustrated at the bottom of Figs. 5 and 6 respectively (dotted lines). However, if the safety pin 24 is turned so that the notch 30 will face to the groove 28, the locking flange does'not prevent elevation ofthe rear member and the safety member becausethe locking flange 26 is free beyond the marginal ange 29 containing the groove 28 on the guard plate. The safety lever 32, the locking flange 26 and the notch 3U'then .take the position relatively to the marginal ange 29 as illustrated in Fig. '7.

W'hat'I claim is:

1. In a self-loading fire arm, a receiver, a bolt mechanism in said receiver, a spring pressed latch for retaining the bolt mechanismv in retracted position, firing mechanism for said bolt mechanism, a rear member removably mounted in said receiver to form a wall for the receiver back of said bolt mechanism, and a safety member rotata circumferentially incomplete locking flange, said safety member including means co-operating with said ring mechanism to lock or alternatively to unlock the same upon adjustment of said safety member into one or the other of two significant positions, a y,guard plate at the bottom of the receiver having a groove to be engaged by said locking flange in the locking and unlocking adjustments of said ksafety member, Vsaid safety member being movable into a third position in which the circumferentially incomplete flange is clear of said groove, thereby to permit removal of the rear member and safety member as a unit from'the receiver. y

3. In a self-loading fire arm, a receiver, a bolt mechanism in said receiver, a spring lpressed latch for retaining the bolt mechanism in retracted position, a rear member removably mounted in said receiver to form a wall for the receiver back of said bolt mechanism, and 'a safety member rotatably mounted in the'rear member; said safety member including means .operable upon adjustment of said safety member into one or the other of two significant positions to actuate said spring pressed latch to operative and inoperative position'respectively, andnreans carried by said safety member .and 4operative in .both of said adjustments 'of the safety memberto lock said rear member against removal from said receiver.

HANS

REFERENCES GITE!) The following references are of record in the file of this patent:

UNITED STATES PATENTS Germany Nov. 26, 1937