US1160581A - Action for breakdown guns. - Google Patents

Description

A. P. CURTIS.

ACTION FOR BREAKDOWN GUNS.

APPLICATION men MAR. 28. 1913.

Patented Nov. 16, 1915.

2 SHEETSSHEET I.

COLUMBIA PLANUGRAFH co.,wAs!1lNOToN, 0. cv

A. P. CURTIS.

ACTION FOR BREAKDOWN GUNS.

APPLICATION FILED MAR. 28. I9l3.

Patented Nov. 16, 1915.

2 SHEETS-SHEET 2.

ITED STATES PATENT OFTGE.

ARTHUR P. CURTIS, OF FULTON, NEVT YORK, ASSIGNOR TO THE HUNTER ARMS ('30., OF FULTON, NEW YORK, A CORPORATION OF NEW YORK.

ACTION FOR BREAKDOWN GUNS.

Application filed March 28, 1913.

To all whom it may concern:

'Be it "known that I, ARTHUR P. CURTIS, a citizen of the United States, and a resident of Fulton, in the county of Oswego and State of New York, have invented a new and useful Action for Breakdown Guns, of which the following is a specification.

This invention has for its object the production of an action for firearms which is particularly simple in construction, economical in manufacture, and highly eificient and durable in use; and the invention consists in the combinations and constructions hereinafter set forth and claimed.

In describing this invention reference is had to the accompanying drawing in which like characters designate corresponding parts in all the views.

Figure 1 is a side elevation of a breakdown gun embodying my invention, the side plate being removed and the stock and barrel being broken away, and the cooking lever being shown partly in section. Fig. 2 is a view similar to Fig. 1 illustrating the position of the parts when the gun is broken open, the fore-end being partly broken away to illustrate the means for transmitting the movement of the barrel to the cooking lever.

This action for firearms comprises, generally, means for cooking the hammer and for actuating the hammer when the trigger is pulled. The action is particularly applicable for break-down guns and is here shown as applied to a break-down gun.

1 is the frame of the firearm, 2 is the barrel hinged at 3 to the frame in the ordinary manner, and 4 is the fore-end.

5 is the hammer, 6 the firing pin, 7 the sear, 8 the sear spring, and 9 the trigger, of the action or firing mechanism, all of which parts may be of any desirable form, size and construction, although I have shown a particular form of firing pin which constitutes the subject matter of another application. The hammer also embodies certain features peculiar to this invention WhlCh' features will be hereinafter described. The

. means for cocking and actuating the hammer also includes mechanism for transmitting the break-down or pivotalmovement of the barrel 2 to the hammer through the main spring. As here shown, this mechanism includes alever 1O pivoted to the forward ex- Speeification of Letters Patent.

tension 11 of the frame beneath the barrel 2, it being here shown as extending lengthwise of the gun, and pivoted by a horizontal pivot 12 intermediate of its ends in a recess in the side of said forward extension, and as having its forward arm extending in front of the pivot 3 of the barrel in position to coactwith a shoulder at the rear end of the fore-end 4. The rear arm of said lever is provided with means coacting with the hammer to cook the hammer and actuate the same. Owing to the simplicity of the lever and associated parts, it is interchangeable, that is can be used on either the right or left side of the gun.

The shoulder provided at the rear end of the fore-end 4 is usually a wall 13 of a socket 1A in the rear end of the fore-end into which socket the front end of the lever 10.

extends. The rear arm of the lever is formed with a socket 15 in which the main spring as a coil spring 16 is located, the main spring acting on a part as a plunger 17 slidablein the socket 15 and pressed by;

the main spring into engagement with a cam surface 18 provided on the tail 19 of the hammer 5. The lever 10 serves as a carrier for the main spring and is operated to tension the main spring or cook the hammer by the action of the barrels 2. As here shown the tail is located in front of and below the pivot 20 of the hammer and on the opposite side of the pivot 20, along a diameter, to that on which the head of the hammer is located. 1'

.mally engaged when the hammer is cocked as shown in Fig. 1, with the cam surface be low said diameterand line, and during the movement of the hammer toward the firing pin 6 under the impulse of the spring-16,

the spring 16 expands or extends and holds the plunger 17 engaged with the lower end of the surface 18, that is, the end of the tail 19. ,When the hammer is down the upper.

portion ofthe cam surface 18 is nearer the axis 12, than the lower portion of said surface 18. l @j During the breakingdown of the gun,

.that is, during the relativemovement of the I frame 1 and barrels 2 about the axis 3, the shoulder 13 of the fore-end presses against the front end of the lever 10 and moves the front end of the lever downwardly von'its pivot and the spring pressed plunger upline and cook the hammer, the spring 16 expand'ing to effect the cooking of the hammer.

The cam surface is now again nearly concenti'icwith the axis of the lever 12. Upon the return movement of the barrel 2 about its axis 3, the lever is returned to its starting position, Fig. 1, the spring 16 being again tensioned, the plunger 17 moving downwardly along the cam 18. The'cam surface 18 is not exactly concentric with the axis 12 but the upper portion is farther away slightly than the lower portionwhen the hammer is cocked. 7

The breaking down of the gun is normally prevented, that is, the frame and barrel are held iii-their normal positions as shown in Fig. 1, by the usual bolt mechanism consisting of a top lever 21 which operates a bolt which takes into a notch 22 in a lug 23 at the rear end of the barrel 2.

The firing pin 6 is of the form indicated in dotted lines and instead of being heldin its guide passage in the frame by a screw, pin or other fastening means, is held in position bythe side plate, the passage for the firing pin being so located that an edge of the side plate extends partly across the rear end of the said passage for the firing pin, so as to engage therear end of the'firing pin.

The firing pin and the means byv which it is held, in position forms the subject matter of another; application.

WVhat I claim is: i p 1. Ina break-down gun, the combination with a frame and a barrel'hinged to the frame, of firing mechanism including a hammer, and means for cooking the hammer during the breaking down or pivotal move- 7 ment of the barrel, said means including a power-transmitting lever between the barrel and the hammer, the lever being pivoted intermediate of its endsto the frame, and having one arm thereof arranged to receive movement from the barrel, the other arm thereof being provided with apart coacting th the hammer, anda spring for pressing saidpart into engagement with the hammer and for actuating the hammer upon the pull 7 of the trigger, substantially as andfor the purpose set forth.

2. ,In'a break-down gun, the combination I .with a frame and a 'barrel 'hi nged tothe '65 frame, of firingme'ch'a nism including a haintension the spring, substantially as and liner, and meansfor cooking the hammer intermediate of its ends to the frame by a horizontal pivot, the lever extending forwardly and rearwardly and having its forward arm arranged to receive movement from the barrel and its rear arm being pro vided with a part coacting with the hammer, and with a spring for'pressing said partinto engagement with the hammer, the

sirin servin as a main sarin for ac'-- tuatiiig the hammer, substantially as and for the purpose described.

3. in a break-down gun, the combination of firing mechanism including a hammer.

having a cam surface on the sideof the axis thereof, along a diameter, opposite to that onwhi'ch the head of the hammer is' located, said surface extending crosswise of said diameter, a main spring, a part acted on by the f naiii spring and engaging said cam surface on one side of said diameter when the hammer is cocked, and a carrier" for the main spring and said part, the carrier being operable to move said'part alongthe cam surface toward said diameter to first tension the spring when the hammer is down and then across said diameter, substantially as and for the purpose described.

at. In a break-down gun, the combination of. firing mechanism including a hammer hav ng a tail provided with a forwardly facing concave-cam surface, a'main spring,

a part acted on by the main spring and coacting with said surfaceand normally engaging said surface at the lower end there of, and a pivoted carrier forthe spring and nearly concentric with the axis of the carrier when the hammer is cooked, and the carrier being operable when the hammer is down to move said part upwardly along said said part,the cam surface being arrangedcam surface'to first tension the spring, then above the axis ofthe hammer to permit the spring to expand and cook the hammer, and

then back along said cam surfaces to again the purpose specified.

for V 5. in a breakdown-gun, the combination with a frame, and a barrel hinged to the frame,'- of firing mechanism including a hammer having ata'il provided with a cam surface, means for transmittiiig the breaking down movement'of thebarrelto the hammer, said means including a lever having one'end arrangedto'receive' movement from the barrel and havingi its other end. 1 providedwith means for coacting with said 'cain'surface, the cam surface being concave. and extending above and below'astrai'ght -l ine,'p a ssing through the axesjof the lever and hammer, and said surface being arranged nearly concentric with the axis of the lever when the hammer is cocked, substantially as and for the purpose set forth.

6. In a breakdown gun, the combination with a frame, and a barrel hinged to the frame, of firing mechanism including a hammer havinga tail provided with a cam surface, means for transmitting the breaking down movement of the barrel to the hammer including a lever pivoted to the frame and arranged to receive movement from the barrel, a main spring carried by the leverand a part carried by the lever and arranged to be acted on by the main spring, and engaged with said cam surface 011 the tail of the hammer, substantially as and for the purpose described.

7. In a'break-down gun, the combination with a frame, and a barrel hinged to the frame, of a firing mechanism including a hammer formed with a tail having a cam surface, and means for cocking the hammer comprising a lever extending lengthwise of the frame and being pivoted between its ends by a horizontal pivot to the frame, and having its front end arranged to receive movement from the barrel during the breaking down movement of the barrel and having its rear end formed with a socket, and a spring pressed plunger located in the socket and coacting with said cam surface, said surface extending crosswise of a straight line passing through the axes of the hammer aiid the lever and being normally nearly concentric with the axis of the lever when the hammer is down, the lever being normally arranged to engage said part with the portion of the tail below said line and said part being movable above said line and then to its normal position during the breakdown movement of the gun and the return of the barrel to its normal position,osubstantially as and for the purpose specified.

8. In.a firearm, a frame, a hammer, a lever pivoted to the frame and having a coiled spring,.;thereon, the lever being arranged so that the coiled spring acts as the main spring on the hammer and means for moving the lever to compress the spring and cook the hammer, substantially as and for the purpose specified.

In testimony whereof, I have hereunto sign'ed'my name in the presence of two attesting- Witnesses, at Fulton in the county of Osweg'o, in the State of New York, this 26th day of -Feby 1913.

4 ARTHUR P. CURTIS.

Witnesses:

C. A. BACHE, H. CARR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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