US1299189A - Locking mechanism for firearms. - Google Patents

Description

T. C. JOHNSON.

LOCKING MECHANISM FOR FIREARMS.

APPLICATION FILED JAN. I0. I919.

Patented Apr. 1, 1919.-

rrn STATES PATENT onnron.

THOMAS C. JOHNSON, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO WINCHESTER, REPEATING ARMS CO., 0]? NEW HAVEN, CONNECTICUT, A CORPORATION.

LOCKING MECHANISM ron rmnnnivrs;

, PatentedApnl, 1919.

Application filed January 10, 1919. Serial No. 270,496.

the characters of reference marked thereon,

to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, 1n- I Figure 1 a detail broken view, partly in side elevation and partly in central long 1-. tudinal section, of a firearm constructed in accordance with my invention.

Fig. 2 a detached plan view of the lock ing-bolt with the hub of the locking boltlever in transverse section in the locked position of the locking-bolt.

Fig. 3 a corresponding view showing the unlocked position of the locking-bolt.

Fig. 4 a detached plan view of the locking-bolt with the hub of the locking boltlever in transverse section on the line 4-4: of Fig. 8, showing the stop-cam in its operated position.

Fig. 5 a detached side view of the looking bolt.

Fig. 6 a detached sectional view of the locking bolt-lever in vertical longitudinal section.

Fig. 7 a reverse plan view thereof.

Fig. 8 a front view thereof.

My invention relates to an improvement in locking-mechanism for firearms, the object being to simplify and cheapen the construction thereof.

With these ends in view, my invention consists in a locking-mechanism for lirearms, having certain details of construction as will be hereinafter described and pointed out in the claims.

In carrying out my invention as herein shown, it is applied to a single-shot breechloading firearm in which a barrel 2 hung upon a pivot 3 is provided at its rear end with a beveled locking-lug 4: engaged by the beveled forward end of a locking bolt 5 having an upwardly curved and rearwardly ex tending arm 6 formed with a longitudinal slot 7 the inner faces of the walls of which are cut away at opposite points to form curved assembling-grooves 8. i The upper face ofthe arm 6 is formed near its rear end with a shallow transverse groove 9 the rear wall of which forms a transverse operatingshoulder 10. The said locking-bolt 5 is operated by a one pieoe locking bolt-lever comprising afinger-piece 11, an integral bearing-hub 12 depending from the forward end thereof, a combined guide and stop-cam 13,

and a disk-like supporting and retaining collar 14. .A deep transverse cut 15 located between the hub 12 and the combined guide and stop cam 13 results in the production of I a transverse shoulder. 16- the left hand corner 16 of which co-acts with the shoulder 10at the rear end of the groove 9 'in the arm 6,.for the retraction of the locking-bolt 5. The combined guide and stop-cam 13 is inclined with reference to the longitudinal axis of the lever, as shown in Fig. 7, an away from the said left hand corner 16 of the shoulder 16. The member 13 is adapted in size to fit within the slot 7 of the arm 6 which it assists in guiding as the same moves back and forth. It will be understood that all of the above described features of the locking bolt-lever are made in one piece.

The hub 12 of the lockin bolt-lever has bearing in a hole 17 forme for its reception in the receiver 18 of the arm. The rounded rear end of the arm 6 of the locking bolt is formed with a conical recess 19 for the reception of the conical nose 20 of a pin 21 encircled by a helical spring 22, and having its rear end entered into a hole 23 in the rear end of the receiver 18. The constant effort of the spring 22 is to force the locking bolt forward into its locking position.

In assembling my improved locking-mechanism, the locking-bolt is slid rearward until its assembling grooves 8 are brought into registration with the bearing-hole 17, whereby the collar 14 of the lever is allowed to pass downward through the slot 7 of the arm 6. The locking bolt is now slid forward until the shoulder 16 of the lever bears against the shoulder 10 of the arm 6. The edges of the collar 14 will now support the rear end of the locking bolt which also retains the looking bolt-lever in place, this being the locked position of the locking-bolt at which time the finger-piece 11 is in line with the longitudinal axis of the arm. The locking-bolt is normally maintained in its locked position by the forward pressure of the spring 22.

Tounlock the locking-bolt for openingv or ment ofthe part 13 of the locking bolt-lever 25 brea king;down,- ,the gnn-,---the fingerpi eqe, withi the righthand wall-of the elot-j of-vthe locking-156N113'retrfibted egdihttheteiisidn relaim I i of the spring '22 by the pressure ofr theztleft 1 lniia locking meehanism for firearms, the hand end 16 of'the shoulder lfi of the'lockcombination with a, locking bolt provided 30 ingsbo lt-l ev r against therleft handendof with a rearwardly extending arm, 0f a epr i n the Shoulder 10111: "the arm 6 of the lockingexerting a constant efiort throughthe said bolt,the movement'of the-"-1i$'kifig ?hfiflfi.-1e'7er n'16e'th?-"166king-bo1t forward, and from left to. right being limited by the e a one-piece loo-kin bolt-lever eomprising a,v

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