US2832165A

US2832165A - Bolt turning attachment for rifle

Info

Publication number: US2832165A
Application number: US530449A
Authority: US
Inventors: Jessie T Ivy
Original assignee: Individual
Current assignee: Individual
Priority date: 1955-08-25
Filing date: 1955-08-25
Publication date: 1958-04-29
Anticipated expiration: 1975-04-29

Description

A ril 29, 1958 J; T. m ,83 6

BOLT TURNING ATTACHMENT FOR RIFLE 2 Sheets-Sheet 1 IN V EN TOR.

T155515 T. Ivy

April 29, 1958 J. T. NY 2,832,165

BOLT TURNING ATTACHMENT FOR RIFLE I Filed Aug. 25, 1955 2 Sheets-Sheet 2 I I 1/? 11/7/771 /Zf INVENTOR. JESS/f T. /VY

ZZTQW l9 TT BHE Y6 BOLT TURNING ATTAQNT FOR RIFLE Jessie T. Ivy, Seattle, Wash. Application August 25, 1955, Serial No. 530,449 Claims. (Cl. 42-16) This invention relates to firearms of the small arms or rifle types and to more particularly attachments for magazine rifles of those types wherein the loading of cartridges into, and the ejection of shells from the barrel is effected by sliding bolt action; and wherein the necessary movements of the bolt are eifected manually by means of a handle or hand lever that exetnds outwardly from one end of the bolt.

It is the primary object of the present invention to provide an attachment device for a rifle of the above kind, or

. type, whereby the necessary action of the bolt for loading,

and also for ejection of shells, is accomplished by the reciprocal action of a charging slide which comprises a part of the attachment device and which, both in its location on the gun and its mode of operation, simulates the charging handle of a pump gun.

More specifically stated, it is the object of the present invention to provide, as an attachment for a bolt action magazine rifle, a mechanism comprising a reciprocal charging slide and guiding means whereby it is operatively mounted for movementalong the barrel, and means for operatively connecting it with the bolt handle for eflecting the necessary reciprocal action of the bolt for loading and unloading, and also for effecting those limited rotary movements in opposite directions required for locking the bolt after loading and unlocking it for ejection of a cartridge.

It is also an object of the present invention to provide a relatively inexpensive attachment mechanism, that can be applied to existing rifles without requiring any material alteration or change in their parts as they already exist, and whereby the bolt action, which is normally controlled by the trigger hand of the gun user, is put under control of the other hand which normall grips the outer part of the gun stock for support of the gun in use.

It is also an object of my invention to provide, in connection with the present attachment or conversion mechanism, certain gripping and hand and face protecting parts that provide for a more satisfactory and safer holding of the rifle when equipped with the bolt operating devices of the present invention.

Still further objects and advantages of the invention reside in the details of construction and combination of parts and in their application to the rifle and mode of use as will hereinafter be fully described.

In accomplishing the above mentioned and other objects of the invention, I have provided the improved details of construction, the preferred forms of which are illustrated in the accompanying drawings, wherein:

Fig. l is a perspective view of a portion of an ordinary type of bolt action rifle equipped with an attachment means embodied by the present invention and showing it as seen from the right hand side of the rifle.

Fig. 2 is a similar perspective view of the rifle and showing the present attachment means as seen from the left hand side of the rifle.

Fig. 3 is a cross-section taken through the breech end Patented Apr. 29, 1&58

portion of the barrel, the frame and charging slide of the attachment mechanism.

Fig. 4 is a vertical cross-sectional detail, taken substantially on line 4-4 in Fig. 2, showing the rear supporting bearing for the bolt actuating rod.

Fig. 5 is a similar vertical section taken on line 55 in Fig. 2.

Fig. 6 is a perspective view of a modified form of attachment means as applied to a rifle having a non-rotating bolt.

Fig. 7 is a sectional detail taken lengthwise of the charging slide of the device of Fig. 6.

Fig. 8 is a cross-section on line 33 in Fig. 6.

Referring more in detail to the drawings:

First, giving consideration to the attachment means of Figs. 1 and 2; this being of a rifle having a sliding bolt that is locked by a slight rotary action. In these views, each of which shows a part of a rifle and an attachment means embodied by this invention as applied thereto, it designates the usual metal frame member of the rifle in which the breech end portion of a barrel lll is secured in the usual way; the frame it being secured to the usual gun stock which is designated generally by numeral 12. The bolt, whereby cartridges are loaded into the breech end of the barrel, is designated in its entirely by numeral 14, and it is shown to be equipped at its rear end with a handle, or hand lever 15 as the means for manually effecting its reciprocatory and rotary movements. The handle 15, as here shown, extends to the right hand side of the frame It and at its outer end terminates in a knob or ball 16 to facilitate holding onto it.

In the operation of the gun, the bolt is shifted forwardly from its retracted position for the loading of cartridges from the gun magazine into the breech end of the barrel, which can be manually effected by use of the handle. Likewise, it has a rearward reciprocal action for ejection of shells from the barrel. Furthermore, the bolt 14- has limited rotary movement in one direction for looking it in its forward position to close the breech after a cartridge has been loaded into the barrel, and it has an opposite rotative movement to unlock the bolt for shell ejection. Both the reciprocal movements and the rotary movements of the bolt are effected by means of the bolt actuating handle 15 as held by the right hand of the user when the gun is held as indicated by the dotted line showing of hands in Fig. 1.

It will be understood that, ordinarily, the rifle used as a bolt action rifle, is supported by the left hand grasping the forward end portion 12) of the gun stock and the trigger is pulled by the forefinger of the right hand while that hand grasps the stock back of the trigger guard, and holds the butt end of the stock against the shoulder. After a shot has been fired, the hand lever is grasped by the right hand, pushed upwardly to rotate the bolt and thus to unlock it. Then, the bolt is pulled rearwardly by the lever to effect shell ejection after which it can be shoved forwardly to reload the gun with a cartridge from a clip or magazine, not herein shown. The handle is then pulled downwardly, thus to rotate and lock the bolt in breech closing position. The loading and unloading operation, as well as the mode of operation of the bolt mechanism, is well. known in the art and will not be further described.

The present attachment mechanism converts the usual bolt action to a pump gun action. It includes a charging slide and means whereby it is mounted for reciprocal movement along the forward end portion of the gun stock and means operatively connecting the charging slide with the lever arm 15 of the bolt to effect both the reciprocal and rotary actions of the bolt that are necessary for loading, locking, unlocking and ejecting. Furthermore, the attachment mechanism provides for action of the charg ing slide by the left hand, that is, by the hand which supports the outer end portion of the gun when in use.

The charging slide of the present attachment mechanism is designated by numeral and as best shown in Fig. 3, it is of U-form in cross-section, and it extends along and about the underside of the forward end portion 12x of the gun stock 12. This handle member is equipped along the top edges of its opposite side portions with metal plates 2626, and these have inwardly facing channels 26x formed to their full lengths, along their top edges, which channels are fitted to the longitudinal outer edge portions of a pair of guide plates 2727 that are fixed to the stock, in the same plane along opposite sides of the gun barrel. Attachment preferably being made by screws 28 as best shown in Fig. 2.

Extended along the gun frame It}, at the right hand side thereof, is the bolt actuating rod 30. Along its forward end portion, this rod is formed with a pair of coextensive longitudinally and spirally directed channels Sit-31 of a predetermined length; this end portion of the rod being both rotatably and slidably contained in a tubular bearing 35 that is fixed to a sidewall plate of the charging handle, as seen in Fig. 1. Fixed in this bearing, radial thereof, are studs 36-36, the inner end portions of which are slidably contained, respectively, in the spiral channels of the rod 30 to serve as the rod rotating means.

Near its rearward end, the rod 30 is supported for rotation and reciprocal sliding movement in a bearing block 38 that is fixed to the side of the rear end portion of the gun frame. At is rear end, the rod has an outwardly extending arm 39 fixed thereto. This is made up of relatively non-rotatable, telescopically joined parts providing for slight extension and retraction of the arm.

Also, the arm 39 has a flattened end portion fitted in a longitudinal slot in the rear end of rod 30, and is so secured therein by a pivot'39p as to permit a very slight forward and rearward movement at its outer end relative to the rod 30 but no relative rotative movement. At its outer end the rod 30 is equipped with a socket member 40, which may be made up of two or more parts if desired, within which the ball 16 at the end of the hand lever 39 is seated. The connection between rod 30 and bolt handle 15, as effected through arm 39, is such that through the rotary and longitudinal movements of the rod 30, effected by reciprocal action of the charging slide, the bolt 14 will be actuated accordingly. This means of connection between charging slide and rod 30 as effected by the studs 36-36 extended into the spiral channels 3131, and the connection between the rear end of rod 30 and the bolt handle, as effected by arm 39, provides that, with the initial rearward action of charging slide 25, the rod 30 will be rotated and the bolt 14 will be rotated accordingly, thus to unlock it. Then, with the engaging of the two studs against the rear ends of the rod channels, 31-31, the rod will be moved rearwardly with the continued rearward movement of the slide, to cause the shell ejecting action of the bolt 14. Then, after ejection of the shell, the forward movement of the charging slide 25 pulls the bolt 14 forwardly for a loading operation.

During the reciprocal opening and closing movements of the bolt, it is held against rotation by reason of the locking lugs with which it is equipped at its forward end, these lugs being slidable in a guide slot in the frame, but freed from the slot when the bolt reaches its forward position, thus providing that when the bolt is rotated, they serve to lock it. The final forward action of the charging slide 25 then causes the studs 1616 to move forwardly in channels 31--31 and effect that rotation of the rod 30 that results in the bolt 14 beingrotated and locked in place. Thus, through the reciprocal movements of the charging handle, first rearwardly and then forwardly, the bolt 14 is rotated and unlocked, then moved rearwardly for shell ejection, then moved forwardly fora loading operation, and finally rotated to locked position.

The modified form ofmechanism showninFigs. 6, 7 and 8 is designed for use on guns in which the bolt is reciprocally movable but has no rotary actuator. This form of attachment device uses the same form of charging slide, reciprocally movable along the forward part of the gun stock, and having a rod connection with the bolt handle which in this case requires no swinging action in its use. in this attachment device, the bolt is designated by numeral 1.14, and its actuating handle, with the usual ball end cut off, is designated by 115. The charging slide or hannie is designated by numeral 125. It is of U-form in cross-section as shown best in-Fig. 7, and longitudinally embraces that portion of the. gun stock 12x that extends along the gun barrel forwardly of the gun frame 110.

It is shown in Fig. 7 that a flat plate 50 is fixed longitudinally to the underside of the gun stock. This plate has parallel opposite side edges to which channeled guide blocks 52-52, fixed within the slide, are fitted forthe reciprocal support of the slide. A bolt actuating rod 130 extends along the right side of the frame and stock, and is fixed at its forward and rearward ends, respectively, to the charging slide and to the outer end of the bolt handle 115. A bearing 60, fixed to the side of the stock or gun frame, supports the rear end of the rod in its reciprocal movement.

In the application of the present attachment device to a gun or rifle, it then becomes desirable, because of the different mode of holding the gun, and different way of operating it, to apply certain hand and face protective means and also gripping means to the rifle. For example, since the thumb of the right hand cannot be applied across the top hand grip portion of the stock, because of the bolt action, I have provided a thumb rest 62, and have fixed it in proper position to the side of the stock to receive the thumb thereagainst as shown in Fig. l. The fingers of the right hand grip the gun stock in the usual way, with the forefinger applied through the trigger guard, but the thumb is retained seated on the rest 62 with the necessary firmness required to hold the gun in the usual manner.

It is further to be observed by reference to Figs. l and 2 that an elongated guard member 42 is fixed to and extends along the top of the stock 12 immediately-rearward of the gun frame 10 to keep the thumb and hand as well as the face of the gun user clear of'the path of travel of the bolt. This guard member has a metal channel 142 set therein as seen best in Fig. .5, to receive a lug 41 that projects from the hub portion 15x of the bolt hand lever 15, thus to aid in guiding and supporting the rear end of the bolt in its reciprocal action.

It should further be explained that in the application of the guide plates 2727 to the stock 12 along opposite sides of the barrel, it is most practical to first plane down the stock to provide flattened surfaces against which the plates can be secured. Then, the placing and securing of the plates, results in formation of shelves that are quite apt to catch moisture or show if hunting in inclement weather. Therefore, to eliminate these shelves as much as possible, I have provided a sort of longitudinal cap 79 that is applied over and along the barrel to the length of the plate as shown in Fig. 1; this cap being of such width as to substantially cover the plates and thus eliminate them as snow or rain collecting means.

These various parts that are applied as protective means are recessed notched, or otherwise so formed as not to interfere with any of the operating or essential parts of the rifle. They have not been shown in connection with the rifle of Fig. 6, but would be applied in the same manner as shown in Fig. 1.

The hand and face protective attachment as well as the gripping attachment and the cap 70 can be used on rifles and guns which are not equipped with the above described pump activating mechanism.

Having thus described my invention, what I'claim as new and desire to secure by Letters Patent is:

1. In combination with a rifle having a sliding bolt action including a handle extending laterally from the bolt whereby the bolt may be moved reciprocally between its closed and open positions, and can be rotatably adjusted in opposite directions when in closed position, for unlocking it, and for looking it in closed position; an attachment device comprising slide guiding means fixed to and extending along the gun stock forwardly of the bolt, a charging slide reciprocally movable on said guiding means between definite limits, a rearward bearing fixed to the gun rearwardly of the breech, another bearing fixed to the slide in alignment with and substantially forward of the first mentioned bearing, a bolt operating rod slidably and rotatably mounted in said bearings, a lever arm extended outwardly from said rod at its rearward end and means operatively connecting it with the bolt handle for actuation of the bolt; said rod being formed along its forward end portion and spirally thereof with a groove that is substantially shorter than the distance of reciprocation of the rod, and said forward bearing having a stud therein extended into the groove whereby incident to rearward reciprocal action of the slide, the rod will first be rotated to effect the unlocking of the bolt, and will then move the unlocked bolt rearwardly to open position; and whereby on forward travel of the slide the bolt will first be moved forwardly to closed position and then rotated to lock it in that position.

2. The combination recited in claim 1 wherein the said lever arm of the bolt actuating rod comprises telescopically extendable and retractable parts, and at its outer end has a ball and socket connection with the outer end of the bolt handle.

3. The combinationrecited in claim 1 wherein said slide guiding means comprises flanges fixed in the same plane along opposite sides of the forward portion of the gun stock, and said charging slide comprises a hand grip member of U-shape in cross section, extended along the underside of said gun stock portion and formed along the opposite edges of its open end with inwardly facing channels slidably containing said flanges therein.

4. The combination recited in claim 1 including a bolt guiding member fixed on and extended along the stock, to receive the bolt therein as it is moved to open position; said member having a longitudinal channel formed therein adapted to receive a lug on the bolt, after the bolt has been rotated to its unlocked position and incident to its being moved toward open position, thus to retain the bolt against rotation while being opened and while being returned to closed position.

5. In combination with a rifle having a sliding bolt action and including a handle extending laterally from the bolt whereby the bolt may be moved reciprocally between ciosed and open positions, and rotated in opposite directions for locking and for unlocking it; an attachment device comprising a hand operated charging slide reciprocally mounted on the rifle, a rear bearing fixed to the rifle, another bearing fixed to said slide, a bolt operating rod slidably and rotatably mounted in said bearings, means on said rod providing an operative connection with said handle for the actuation of said bolt, between closed and open positions and for locking and unlocking it, a pin and spiral slot connection of limited extent, provided between said rod and the second mentioned bearing whereby, incident to rearward reciprocal action of said slide, the rod will first be rotated to eflect the unlocking of the bolt and will then move the unlocked bolt rearwardly to its open position, and whereby, on forward actuation of said slide, the rod will first be moved to return the bolt to breech closing position and then rotated to rotate the bolt to lock it in closed position.

References Cited in the file of this patent UNITED STATES PATENTS 1,103,715 Vogel July 14, 1914 1,940,362 McClarin Dec. 19, 1933 2,387,413 Shafinit Oct. 23, 1945 2,499,878 Raymond Mar. 7, 1950 2,674,822 Studler Apr. 13, 1954 FOREIGN PATENTS 132,889 Great Britain Sept. 29, 1919