US2127919A - Firearm - Google Patents

Description

Aug. 23, 1938 Q HQRSRUD 2,127,919

' FIREARM Filed March so, 1936 s Sheets-Sheet 2 o. HORSRUD FIREARM Filed March 30, 1936 3 Sheets-Sheet 3 "llllllillll Patented Aug. 23, 1938 UETED STATES FIREARM Ole Horsrud, Chicago, 111., assignor to Sears. Roebuck and 00., Chicago, 111., a. corporation of New York Application March 30,

12 Claims.

This invention relates to firearms and more particularly to the breech mechanism and associated parts in a firearm of the over-under type.

Among the objects of this invention is to provide improved cocking mechanism in a firearm of the over-under type. By over-under type is meant firearms having two barrels and in which one barrel is placed vertically over the other.

Another object is to provide an efiicient and economical manner of automatically cocking the firearm through the breaking action.

. A further object is the provision of improved fore-end construction and novel means for clamping the fore-end onto the barrel portion of the firearm.

A Still further object is to provide novel cocking mechanism in which the fulcrum of the cocking lever is below the bottom line of the firearm proper.

Another object is the provision of improved firing mechanism.

Other objects, advantages and capabilities will later more fully appear.

My invention further resides in the combination, construction and arrangement of parts illustrated in the accompanying drawings, and while I have shown therein for illustrative purposes a preferred. embodiment, I wish it understood that the same is susceptible of modification and change without departing from the spirit of my invention.

In the drawings: Fig. l is a side elevation of the breech mech anism and the rear portions of the barrels and associated parts of a firearm embodying my invention.

Fig.- 2 is a vertical longitudinal sectional view through the parts shown in Fig. 1.

Fig. 3 is a fragmentary vertical longitudinal sectional view of parts of the breech mechanism, and rear portions of the barrels and associated parts and showing the barrels moved to broken position.

Fig. 4 is a view similar to Fig. 3 (some of the parts of Fig. 3 being omitted) but showing a side elevation.

Fig. 5 is a perspective view of the fore-end.

Fig. 6 is a fragmentary perspective view showing the barrel inlocked position ready for firing.

Fig. 7 is an end elevation of the fore-end looking at the right-hand end of Fig. 5.

Fig. 8 is a vertical transverse section taken on the line 8-8 of Fig. 2.

Fig. 9 is a transverse horizontal section taken on the line 9-9 of Fig. 2.

1936, Serial No. 71.590

Fig. 10 is a transverse vertical section taken on the line 10-10, of Fig. 2.

Fig. 11 is a transverse vertical section taken on the line 11--11 of Fig. 2.

Fig. 12 is a transverse horizontal section taken on the line 12-,-l2 of Fig. 2.

Referring in detail to the drawings, the firearm of the present invention comprises generally the breech I, the shell chamber block 2 and the barrels consisting of the upper barrel 3 and the lower barrel 4. The firearm of the present invention has the barrels arranged one over the other, commonly called the over-under type. The fore-end 5 is shown in perspective in Fig. 5 detached from the firearm, and comprisesv the elongated bar 6, the resilient locking ears 1 for detachably holding the front end engaged with the lower barrel, and the head 8 at the rear end formed with the arcuate depression 9 for fitting the contour of the lower face of the lower barrel, and the arcuate recesses 10-10 formed on each side in the rear face to receive the cylindrically curved extension 11 formed concentric with the pivot pin 12, about which, latter the barrels swing in breaking the firearm. Pivot pin 12 is mounted in the lower portion of the front end of the frame 13, which frame comprises two side plates 14 and 15 spaced apart a distance to snugly but freely receive therebetween the shell chamber block 2, which moves swingingly up and down therein during the breaking and closing of the firearm. The shell chamber block 2 has two downwardly extending lugs 15 and 11, each of which has a central groove 18 and 19 in its lower face to straddle the cocking pin 20, which is longitudinally slidably mounted in said grooves 18 and 19 and in suitable grooves and openings in plate 21, which is secured between side plates 14. and 15 of the frame at the bottom thereof. The bottom plate 21 is provided with a depend- 4O ing portion which is preferably merged into and forms part of the trigger guard 105, said depending portion having a recess 82 therein which extends below the plane of said bottom plate.

The front faces of lug 16 are formed with a substantially semi-cylindrical recess to receive the pivot pin 12. In other words, the lug 16 is hooked over the rear side of the pivot pin prior to the application to its position of the fore-end 5. Thefore-endis then placed in position with arcuate recesses 10 fitting over arcuate projections 11, which thus holds the foreendin position against the barrel and the barrels swingably related to the pivot pin 12, it being understood that in applying the fore-end the locking ears 1 are snapped into holding engagement with the lower barrel by swinging upwardly on the front end of the fore-end and applying sufficient pressure thereto to snap said resilient locking ears 1 into place.

Pivotally mounted in head 8 of fore-end 5 on pins 22, 23 in grooves 24, 25 are two extractor operating levers 26, 21, which at their upper ends engage the forward ends of the two extractor pins 28, 29, which are slidably mounted in the shell chamber block, one on each side, and carry the extractor 30 at their rear end. The extractor is operated by means of the lower end 3| of each of levers 26 and 21 ridingin grooves 32 formed one in each of the two (one on each side) arcuate extensions These grooves 32 are so shaped that as the firearm is being broken the lower ends 3| of levers 26, 21 ride in these grooves and cause these levers to so rotate on their pivot pins as to move their upper ends toward the rear of the firearm and thus move the two extractor pins 28, 29 and the extractor carried thereby rearwardly to extracting position. When new shells are inserted and the firearm closed the rear end of the shells during the closing movement of the firearms will slide downwardly against the adjacent face 32 of the breech block 33 (see Fig. 2), and thus push the shells and the extractor to closed position and return the extractor pins and extractor operating levers to the position shown in Fig. l, and ready to again extract the shells when the firearm is again broken.

The fore-end 5 has positioned in a slot 34 in its head 8 a cocking cam 35, which is held in position in said slot by a pin 36. This cam has its rear face inclined as at 31 to form a cam surface to push rearwardly on the adjacent end I of the cooking pin 20 to force this pin rearwardly when the firearm is being broken (see Fig. 3). The breech block 33 is formed with the upper and lower tangs 38 and 39, respectively, which at their rear ends are secured together in spaced relation by a machine screw 48 (see Figs. 1 and 2). Fixed in proper position between the two tangs by screws, bolts, welding or other desired manner, is the frame member 4| in which are slidably mounted the rear portions of the two firing pins 42 and 43, the forward ends of these pins being slidably mounted in openings 44 and 45 in breech block 33, the front end of each of these firing pins being reduced in diameter to.

pass through a reduced opening to facilitate firing the shells in the shell chamber.

Firing pin 42 has fixed thereto lug 46, and firing pin 43 has fixed thereto lug 41. Between lugs 46 and 41 and frame 4| are coil compression springs 48 and 49, respectively, which by exerting a pressure against said lugs urge the firing pins 42 and 43 forwardly except when held in retracted position by sears 50 and 5|, respectively, which are respectively pivoted at 52 and 53 in frame member 4|. Sears 50 and 5| are formed at their rear ends with detent portions 54 and 55, which are urged into engagement with notches 56 and 51, respectively, in the firing pins, by the respective springs 58 and 59. These springs may have any suitable arrangement desired, the main end being to normally urge the sear detents into engagement with the firing pin notches and hold them there until released by the triggers 6D and BI, both mounted on pin 62 passing through the trigger slots in the lower tang. Triggers 80 and 6| have formed in their upper face rounded notches 63 and 64, in which safety device which is operated by the thumb or finger pushing rearwardly on the sliding safety block 61 to set the safety device, or forwardly to release it. Depending from the sliding block or thumb piece 61 and slidable in slot 68 in the upper tang is the lug 69, which carries pin 19 which seats in notch 1| in the top of lever 12 pivoted at 13 to an extension 14 fixed to frame 4|. Fixed to the bottom end of lever 12 is a forwardly extending arm 15, in. which is fixed (or rotatably mounted as desired) a pin 16, which when the thumb piece 61 is moved rearwardly will move forwardly into position just over the rear ends 11 and 18 of the triggers and 6| and prevent upward movement of said rear ends when the triggers are pulled, and in turn make it impossible to free the sears from the firing pins and in turn prevent the firing of the firearm. When the thumb piece 61 is pushed forwardly this rotates the lever 12 in a direction to carry the laterally extending pin 16 rearwardly away from over the rear ends of the triggers and permit the normal firing of the firearm.

Fixed to the under face of the upper tang by screw 19 is a spring 86 which at its forward end has a notch 8| into which the pin 10 of the thumb piece 61 will move and be held when the safety is set. When the safety is not set the pin 10 will be forward of said notch 8| and held by a projection on the forward end of spring 80 to prevent pin 19 from moving too easily into notch 8| but permitting such movement under pressure sufficient to overcome the resistance of the spring.

The cocking of the firearm is automatically efiected by breaking it as follows: Pivotally mounted near the bottom of recess 82 at 83 is an upstanding arm or cocking lever 84, Which near its upper end has an opening 85 through which freely passes firing pin 43, but which 'opening is narrower than the width of lug 41 on firing pin 43. When the firearm is broken the swinging of the barrel portion about the pivot pin l2 will cause the cocking cam 35 to push rearwardly on the cooking pin, the rear end of which will push rearwardly on cocking lever 84, which in turn will contact with each of lugs 46 and 41 and push them rearwardly, which will carry each of the firing pins 42 and 43 rearwardly until the sears snap into locking engagement with the notches in the rear end portions of the firing pins, thus cocking the firearm through the breaking action.

It is important to note that the fulcrum 83 of cocking pin 84 is below the bottom line of the firearm proper. In other words, it is sufiiciently below the cocking pin or push rod 20 to give the desired mechanical movement to the cocking lever when the latter is being pushed by the cocking pin, to simultaneously retract both of the vertically spaced firing pins, and at the same time permit the cooking pin and means for operating the same, to be located near the bottom of that portion of the firearm in which it is mounted.

While I have shown the cocking lever as mounted in a recess in the trigger guard, it does not necessarily have to be specifically so mounted but may be mounted in any other desired manner that will bring the fulcrum of the cocking lever below the horizontal line of the cocking pin.

The showing in the drawings is to be regarded as for illustrative purposes only and not as limiting the scope of my invention. Other specific forms of cocking lever and firing mechanism may be used if desired.

The locking of the firearm against breaking until desired is effected by the projecting of locking bolt 85' into notch 86 formed in the bottom portion of the shell chamber block 2. When it is desired to break the firearm, this locking bolt is withdrawn from" notch 86' by pushing sidewise away from the eye upon the locking lever 81 of Figs. 1 and 2. The forward end of this lever is flattened and rotatably secured by screw 88 within an arcuate socket in the top face of the breech block 33 (see Fig. 2). As seen in Fig. 10 the righthand side of the flattened forward end of locking lever 8'I directly opposite the axis of rotation thereof is formed with a recess 88, into which is inserted the upper end 89 of the locking bolt operating lever 90, which is pivoted at 9I in a suitable slot in the breech block 33 as seen in Fig. 2. The bottom end 92 of lever 90 is positioned in a notch 93. The locking bolt 85 is slotted at 94 to provide two spaced apart arms 95, 96 which, as seen in Fig. 9 and Fig. 10, straddle the cooking lever 84, and as seen in Fig. 11, straddle the upstanding flanges HT, 98, which extend along the sides of the trigger opening in the lower tang. Mounted in an opening 99 in the side plate I4 of frame I3 is a pin I00 which is continually urged inwardly by spring IOI secured at one end by a screw I02 in a slot that slopes inwardly toward hole 99. When locking bolt 85 is withdrawn from socket or recess 86 by swinging sidewise on the rear end of locking lever 81, pin I00 jumps into place in front of bolt 85 and holds it rearwardly so as to clear the rear bottom edge of the shell chamber block when the firearm is being closed. In order to withdraw pin I00 from in front of locking bolt 85 so as to permit it to be pushed into socket 86 by swinging sidewise toward the eye the rear end of lever 91, the upper edge of the inner end of pin I00 is chamfered or beveled at I03 so that the bottom of the adjacent edge I04 of the shell chamber block will push it outwardly away from in front of locking bolt 85 to permit the latter to be pushed into the socket 86 when they register.

The trigger guard I 05 is provided for the usual purpose of protecting the triggers. The forward end of the wood plates that close the opening that houses the breech mechanism are beveled at their forward ends and fit under the undercut portion I06 on each side as shown in Fig. 10.

The opening IU'I in the fore-end 5 receives the lug I08 on the underneath side of the lower barrel when the fore-end is snapped into final position. The fore-end will be provided with a wood or other attractive covering for decorative as well as hand grip purposes, as indicated in dotted lines at I09 in Fig. 6. As is understood the shoulder butt of the firearm will be provided to the rear of the breech but has been omitted in the drawings for convenience.

Having now described my invention,

I claim:-

1. In a firearm, of the over-under type, a breech portion, a barrel portion swingably mounted with relation to the breech portion for breaking purposes, a cocking pin longitudinally slidable in the lower portion of the breech portion, mechanism for longitudinally moving the cooking pin during breaking, said barrel portion having a shell chamber block at its rear end, saldshell chamber block having a longitudinally extending groove in its bottom portion, which groove moves into position over the cooking pin when the firearm is closed.

2'. In a firearm of the over-under type, a breech portion, a barrel portion swingably mounted with relation to the breech portion for breaking purposes, a cooking pin longitudinally slidable in the breech portion, mechanism for longitudinally moving the cooking pin during breaking, a shell chamber block on the rear end of the barrel portion, the bottom faceof the shell chamber block having a centrally positioned longitudinally extending groove which receives the cooking pin when the firearm is closed, and in which the cocking pin is also slidable.

3. In a firearm of the over-under type, a breech portion, a barrel portion swingably mounted with relation to the breech portion for breaking purposes, a cocking pin longitudinally slidable in the lower portion of the breechportion, mechanism for longitudinally moving the cooking pin during breaking, a shell chamber block at the rear end of the barrel portion, the bottom face of the shell chamber block being formed with a centrally positioned longitudinally extending groove within which the cocking pin slidably seats when the firearm is closed, and firing mechanism in the breech portion, which firing mechanism is moved to cocked position by the longitudinal movement of the cooking pin when the firearm is being broken. I

4. In a firearm of the over-under type, a breech portion, a barrel portion swingably' mounted with" relation to the breech portion for breaking purposes, a cocking pin longitudinally slidable in the lower portion ofthe breech portion, a fore-end on the barrel portion, a cam portion on the foreend, said cam portion having a cam face engaging one end of the 'cockingpin and moving said pin longitudinally when the barrel portion is swung to open position, a pivoted cocking lever, a pair of longitudinally slidable firing pins, a triggeroperated sear for each firing pin 'for holding the same in retractedposition, a trigger for each sear for releasing the same, longitudinal movement of said cocking pin during swinging of the barrel to open position moving the firing pins to retracted position through the medium of thecocking lever, the fulcrum of the cocking lever being below the bottom line of the firearm when the latter is held in horizontal firing position, a shell chamber block at the rear end of the barrel portion and having a longitudinally extending groove in its bottom portion, which groove moves into position over the cocking pin when the barrel portion is swung to closed position.

5. In a firearm of the over-under type, in combination a breech portion, a barrel portion swingably mounted with relation to the breech portion for breaking purposes, a cooking pin longitudinally slidable in the lower portion of the breech portion, a cooking lever operated by said cocking pin, a pair of longitudinally slidable firing pins movable to cocked position by the said cocking lever, a locking bolt slidably mounted in the lower portion of the breech portion closely adjacent said cocking pin, said locking bolt being formed to permit movement of said cocking lever by the cocking pin without interference, and means for moving said locking bolt into looking position after the cooking pin has moved the cooking lever to cocked position.

6. In a firearm of the over-under type having a plurality of barrels mounted one directly over the other, a breech portion, a barrel portion swingably mounted with relation to the breech portion for breaking purposes, firing elements movably mounted in the breech portion, a cocking pin longitudinally slidable in the lower portion of the breech portion, mechanism for longitudinally moving the cooking pin during breaking, and connections between the cocking pin and firing elements for moving the latter to cocked position through the breaking action, said connections including a cocking lever for moving said firing elements, the fulcrum of the cooking lever being below the bottom line of the firearm.

'7. In a firearm of the over-under type having a plurality of barrels mounted one directly over the other, a breech portion, a barrel portion swingably mounted with relation to the breech portion for breaking purposes, firing elements movably mounted in the breech portion, a cocking pin longitudinally slidable in the lower portion of the breech portion, mechanism for longitudinally moving the cooking pin during breaking, and connections between the cooking pin and firing elements for moving the latter to cocked po sition through the breaking action, said connections including a cocking lever for moving said firing elements, the fulcrum of the cooking lever being below the bottom line of the firearm, a trigger guard, said cocking lever fulcrum being in the trigger guard.

8. In a firearm of the over-under type, a breech portion, a barrel portion swingably mounted with relation to the breech portion for breaking purposes, a firing element in said breech portion, a cocking pin mounted in the lower portion of the breech portion for longitudinal sliding movement therein, a fore-end removably mounted on the lower face of the barrel portion to swing therewith, a cam mounted in the fore-end for moving the cocking pin longitudinally through the breaking action, a cocking lever adapted to be swung to cocked position by said cocking pin, the fulcrum of the cocking lever being positioned below the bottom line of the firearm.

9. In a breech-loading firearm of the overunder type, a breech portion, a barrel portion swingably mounted with relation to the breech portion for breaking purposes, a pair of firing elements mounted for movement one above the other, springs for normally urging said firing elements to firing position, a projection on each :of said firing elements, a cooking lever engageable with said projections for moving the firing elements into cocked position, and a cocking pin for imparting movement to the cocking lever,

said cocking pin being longitudinally movable in the lower portion of the breech portion, and means for moving said cocking pin longitudinally against the said cocking lever by swinging the barrel portion relatively to the breech portion, the fulcrum of the cocking lever being positioned below the bottom line of the firearm when the latter is held in horizontal firing position.

10. In a firearm, a breech member having a portion depending below the bottom thereof and having a recess therein, an over and under barrel portion swingably mounted in the breech member for breaking purposes, firing mechanism for the barrels of said barrel portion, a cocking lever for said firing mechanism, said lever being pivoted at its lower end in and near the bottom of said recess and projecting upwardly therefrom, and means located below the barrel member while in normal firing position and engageable with said cocking lever by movement of said barrel member to breaking position and in such manner as to impart pivotal movement to said cocking lever in one direction.

11. In a firearm, a breech member having a portion depending below the bottom thereof and provided with a recess therein, an over and under barrel portion swingably mounted in the breech member for breaking purposes, firing mechanism for both barrels of the barrel portion, an upwardly projected cocking lever for said firing mechanism, said lever being pivoted at its lower end inand near the bottom of said recess, a cocking pin slidably mounted in the breech member at the bottom thereof and beneath the lowermost barrel while in normal firing position, said pin being movable in a plane parallel with that of said barrel while in said firing position, said pin being movable into said recess in such manner as to engage said cocking lever, and means actuated by swinging movement of the barrel portion to breaking position for imparting slidable movement to said pin in such manner as to project it into said recess and in engagement with said cocking lever so as to move the latter to cocking position.

12. In a firearm, a breech member having a bottom plate provided with a depending portion having a recess therein, an over and under barrel portion swingably mounted in the breech member for breaking purposes, firing mechanism for the barrels of the barrel portion, an upwardly projected cocking lever pivotally mounted at its lower end in and near the bottom of said recess, a cocking pin slidably mounted on said bottom plate and movable through said recess and into engagement with the cocking lever, and means actuated by swinging movement of said barrel portion to breaking position, for bringing said cocking pin into engagement with said cocking lever in such manner as to move the latter in one direction.

OLE HORSRUD.

CERTIFICATE OF CORRECTION. 1 Patent No. 2,127,919. August 25, 1958.

OLE HORSRUD.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3 second column, line 1L claim 2, after "the" insert the words lower'portion of the; and that the said Letters Patent'shouldbe read with this correction therein that the same may conform to the record ofthe case in the Patent Office.

Signed and sealed this 11th day of October, A. D 1958.

Henry Van Arsdale Acting Commissioner of Patents.

CERTIFICATE OF CORRECTION. Patent No. 2,127,919. August 25, 19

OLE HORSRUD,

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 5, second oolumn, line 11;, claim 2, after "the" insert the words lower'portion of the; and that the said Letters Patent'shouldbe read with this correction therein that the same may conform to the record o fithe case in the Patent Office.

Signed and sealed this 11th day of October, A. Do 1958.,

Henry Van Arsdal e v Acting Commissioner of Patents.

Images