US1322242A

US1322242A - of new haven

Info

Publication number: US1322242A
Authority: US
Publication date: 1919-11-18
Anticipated expiration: 1936-11-18

Description

T. C. JOHNSON.

BOLT ACTION GUN.

APPLICAYTION FILED Aue.9.1919.

Patented Nov. 18, 1919.

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T. C. JOHNSON BOLT ACTION'GUN.

APPLICATION FILED AUG-9| I919- v Patented Nov. 18, 1919.

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ni ma-m? UNITED STATES PATENT OFFICE.

THOMAS C. JOHNSON, OF NEW HAVEN, CONNECTICUT, ASSIGNOR T0 WINCHESTER REPEATING ARMS C0., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

BOLT-ACTION GUN.

Specification of Letters Patent.

Patented NOV. 18, 1919.

Application filed August 9, 1919. Serial No. 316,424.

T 0 all whom it may concern:

Be it known that I, THOMAS C. JOHNSON, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Bolt-Action Guns; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact descriptionof the same, and which said drawings constitute part of this application, and

Figure 1, is a broken view partly in vertical longitudinal section, and partly in right hand side elevation of a bolt-action gun constructed in accordance with my invention, showing the bolt in its closed and cocked position. I

Fig. 2, is a corresponding view showing the depression of the sear by an excess movement of the trigger into the position in which it permits the withdrawal of the bolt.

Fig. 3, is a detached view in side elevation of the trigger.

Fig. 4, is an edge view thereof.

Fig. 5, is a detached view in side elevation of the sear.

Fig. 6, is a plan view thereof.

My invention relates to an improvement in bolt-action guns, the object being to provide simple and convenient means whereby the bolt may be withdrawn from the gun to permit the gun barrel to be cleaned from the rear of the gun.

WVith these ends in view, my invention consists in a bolt-action gun having a trigger adapted at its upper end to release the firing mechanism of the gun and its lower end to withdraw the bolt-stop mechanism thereof to permit the bolt to be removed therefrom.

My invention further consists in a boltaction gun having certain details of construction and combinations of parts as will be hereinafter described and pointed out in the claims.

In carrying out my invention as herein shown, the trigger 2 has the finger-bow 3 at its lower end extended downward through a slot 4: in a plate 5 forming a part of the trigger-guard 6 and interposed between the ends thereof and the lower face of the stock 7 to which the plate 5 and guard 6 are secured by wood screws 8, the parts just described being positioned and proportioned so that when the trigger is retracted beyond its customary firing-pin-release position,

hungupon a pivot 16 passing transversely through the forward end of the slot 14. At its rear end the sear has an upstanding lug 17, the rear corner of which forms the searnose 18, while its forward edge is shaped to form a bolt-stop 19, which normally prevents the withdrawal of the bolt from the receiver. The sear-nose 18 co -acts with a sear-notch 20 in the lower face ofthe firingpin 21, which is installed in the bolt 22, the firing pin also having as shown, a clearancenotch 23 for the upper end of the upstanding sear-lug 17. At its extreme forward end, the sear is formed with a depending arm having a hole 24; receiving a helical sear-spring 25 the upper end of which impinges against the lower face of the receiver 15. The upper edge of the trigger extends slightly above the slot 11 in the sear 12, and is formed with a cam 26 which has camming action upon the lower face of the bolt 22 for releasing the firing-pin 21; Normally the upstanding sear-lug 17 rises into the searclearance slot 27 in the lower face of the bolt 22. Normally, also, the forward wall 28 of the slot 27 engages .with the bolt stop 19 of the sear-lug 17 to prevent the withdrawal of the bolt when the same is pulled back.

Assuming that the gun is closed and cocked with the trigger in the position in which it is shown in Fig. 1, it is apparent that when the trigger is pulled back in the ordinary manner by its finger-bow, the cam 26 upon its upper edgewill rock upon the lower face of the bolt 22 so as to overcome the tension of the sear-spring 25 and depress the sear 12 to the extent required for disengaging its nose 18 from the notch 20 of the firing-pin 21 which will thus be allowed to spring forward. This function of the trig er in releasing the firing-pin is not solel y discharged by the cam '26, but is 1n part due to the action of the rear portion of the upper edge of the trigger. The customary pull upon the finger-bow 3 at the lower end of the trigger for releasing the firing-pin is not suflicient to bring the outer face of the finger-bow into engagement with the rear wall of the slot 4: in the plate 5 of the two-part trigger guard. However, if the trigger is pulled rearward beyond what is necessary for releasing the firing mechanism of the gun, the point 9 upon the outer face of the finger-bow 3 is caused to engage with the point 10 of the plate 5, after which the trigger will both rock and slide upon the point 10 with the effect of still further depressing the sear-lug 17 and to such an extent as to clear it entirely from the sear clearance slot 27 in the bolt 22 and hence from the forward or bolt-stop wall 28 of the said slot. With the sear thus depressed, the bolt may readily be withdrawn from the gun, so as to permit the chamber and bore of the barrel, (which is not shown) to be cleaned from the breech-end of the barrel.

It thus appears that under my improvement the upper end of the trigger is used for operating the firing-pin-release mechanism of the gun, while its lower end is utilized for operating the bolt-releasing mechanism thereof. In another View, during the customary initial pulling of the trigger, its upper end acts as a cam for r leasing the firing-pin, while during the sec ondary or excess pulling of the trigger, its lower end acts as a cam for withdrawing the bolt-stop mechanism of the gun. In one case, the upper portion of the trigger is the fulcrum, and in the other case the lower portion of the trigger is the fulcrum. These results are secured, not somuch by novelty of form as by an appropriate positioning and proportioning of the parts, so as to adapt them to function in the manner de scribed, and without the addition of any auxiliaries.

1. A bolt-action gun having a bolt, a combined bolt-stop and sear, a firing-pinrelease mechanism and a trigger, the lower portion of the trigger being shaped and positioned to engage on an excess pull of the trigger with a fixed portion of the gun to operate the combined bolt-stop and sear to permit the bolt to be removed from the gun.

2. bolt-action gun having a bolt, a combined bolt-stop and sear, a firing-pinrelease mechanism, and a trigger the upper portion of which coacts with the said firing-pin mechanism and the lower portion of which is shaped and positioned to coact on an excess pull of the trigger with a fixed portion of the gun to operate the said combined bolt-stop and sear preparatory to the withdrawal of the bolt from the gun.

3. A bolt-action gun having a receiver, a bolt located therein, a combined bolt-stop and sear, a firing-pin-release mechanism, a trigger guard, and a trigger the upper end of which coacts with the lower face of the bolt for releasing the firing-pin-release mechanism and the lower portion of which is shaped and positioned to coact with the trigger guard for retracting the combined bolt-stop and sear to permit the removal of the bolt from the receiver.

4. In a bolt-action gun, the combination with the receiver thereof, of a bolt, a firingpin, a sear co-acting with the firing-pin to fire the gun and with the bolt to prevent the withdrawal thereof from the gun, a trigger pivotally mounted in the sear, and a two-piece trigger-guard through which the finger-bow of the trigger projects downwardly, the trigger acting at its upper end to retract the sear from engagement with the firing-pin, and the finger-bow of the trigger co-acting with one of the two parts of the trigger-guard for retracting the sear into position for releasing the bolt to permit the withdrawal thereof.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

THOMAS C. JOHNSON.