US3203129A - Bolt action rifle barrel construction - Google Patents

Bolt action rifle barrel construction Download PDF

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Publication number
US3203129A
US3203129A US324670A US32467063A US3203129A US 3203129 A US3203129 A US 3203129A US 324670 A US324670 A US 324670A US 32467063 A US32467063 A US 32467063A US 3203129 A US3203129 A US 3203129A
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bolt
barrel
bore
firing
firing pin
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US324670A
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Elkas Louis
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SAVAGE INDUSTRIES Inc A CORP OF MASS
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Newfrey LLC
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Priority claimed from DEG38679A external-priority patent/DE1205423B/en
Application filed by Newfrey LLC filed Critical Newfrey LLC
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Assigned to SAVAGE INDUSTRIES, INC., A CORP. OF MASS. reassignment SAVAGE INDUSTRIES, INC., A CORP. OF MASS. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: EMHARDT INDUSTRIES, INC.
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/48—Barrel mounting means, e.g. releasable mountings for replaceable barrels
    • F41A21/485—Barrel mounting means, e.g. releasable mountings for replaceable barrels using screws or bolts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A15/00—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun
    • F41A15/12—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for bolt-action guns
    • F41A15/14—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for bolt-action guns the ejector being mounted on or within the bolt; Extractors per se
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/12—Sears; Sear mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/12—Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
    • F41A3/14—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively
    • F41A3/16—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks
    • F41A3/18—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks hand-operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/12—Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
    • F41A3/14—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively
    • F41A3/16—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks
    • F41A3/18—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks hand-operated
    • F41A3/22—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks hand-operated the locking being effected by rotating the operating handle or lever transversely to the barrel axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/66—Breech housings or frames; Receivers

Definitions

  • the principal object of this invention is to provide a barrel construction for bolt action rifles which may be produced by simplified and economical manufacturing techniques Without impairment or" the operational characteristics of the rifle.
  • the objective of this invention is achieved by extending the barrel beyond the breech, thus providing a single unit which acts as a rifle barrel and a member for locking and guiding the front end of the bolt through its full travel. In this Way all the requisite machining operations, required for accurate and safe bolt lock-up and firing pin operation, may be accomplished on a unitary component.
  • the other components which make up rifles embodying this invention may be made by less expensive techniques, as die-casting, since they do not function in connection with guiding and locking the bolt.
  • FIG. 1 is a partial elevation, partially in section, of a rifle embodyin the present invention
  • FIG. 2 is a cross sectional view corresponding to H6.
  • FIG. 3 is a section taken generally on line llllll in FIG. 2 with the bolt moved to its locked position;
  • FIG. 4 is a section taken along line 1VIV of FIG. 2;
  • FIG. 5 is an exploded perspective view of the breech end of the barrel and the bolt.
  • FIG. 6 is a cross sectional view, on an enlarged scale, of the bolt assembly.
  • the present invention is embodied in a rifle comprising a barrel Ill, a stock s, a housing 12, which contains the firing mechanism, and a receiver 14.
  • the housing 12 and receiver are held together by screw to, 17 and receive a barrel extension ill, FIG. 5, which extends rearwardly of the cartridge chamber 13 and serves as a slide or receiver for the bolt 26.
  • the forward end of the receiver 14 comprises an nular section 13 which more or less snugly receives the barrel.
  • a screw 2d extends through the housing 12 for holding the barrel firmly in the receiver
  • the screw 17 extends into a recess in the barrel to position it longitudinally and angularly relative to the housings l2 and 14.
  • the receiver 14 is provided with a loading and ejection port 15.
  • a slot 19 is provided to accommodate sliding and rotating movement of the bolt.
  • a depending Wall 21 serves as the bolt stop.
  • the firing mechanism and barrel assembly are secured to the stock 5 by a screw 24 threaded into the same hole as the screw 2d.
  • the bolt 2-6 is reciprocably and rotatably disposed in barrel extension iii.
  • the barrel extension has a bore 27 of sufficient diameter to accommodate the bolt and is larger than the rifled bore of the barrel to provide a breech against which the bolt holds a cartridge rim 29 (FIG. 3) when the chamber 13 is closed.
  • the barrel extension is of sufficient length to guide movement of the bolt throughout the length of its stroke.
  • the bore 27 includes a longitudinal slot 23 which extends through the wall of the bore and from the rear end of the barrel extension to a point adjacent the rifle chamber 13.
  • a lock lug receiving slot 3d communicates with and extends upwardly from the longitudinal slot 23.
  • Diametrically opposite the slot 23, is another longitudinal slot 32 provided to accommodate the cartridge extractor.
  • the barrel extension 11 is also provided with an opening or port 34 which is registered with port 15 in the receiver 14, for the loading and ejection of cartridges from the barrel extension ill.
  • extractor slot 32 terminates in a cam surface 35 (FIGS. 2 and 3) which serves to defiect the extractor 36 outwardly to provide for complete closure of the firing chamber 13 by the bolt.
  • T he outer end surface of the barrel extension 11 is provided with a recess 38 to accommodate the forward movement of the firing pin dd as Will be hereinafter explained.
  • Cam surface 39 (P16. 5) is also provided to cam the firing pin rearwardiy when the firing chamber of the rifie is unlocked, in this way insuring against accidental discharge of the rifle by action of the firing pin when the bolt is not fully locked.
  • the bolt 26 comprises an operating lever dll for rotating and sliding the bolt in the barrel extension lll. At its forward end the bolt is provided with a radially extending loci; lug 42 which is slidably received in the longitudinal slot 23 of the barrel extension. When the bolt is rotated to its locked position lug 4-2 is rotated into the slot 36). Rearwardly of the lock log 42 is the extractor band shown generally at 36 (FIG. 5).
  • the extractor is a resilient sheet metal member of one piece construction which is rotatably carried in a groove or recess 56 provided in the body of the bolt.
  • the extractor 36 includes cartridge case engaging claw 48 formed at its forward end.
  • the claw extends inwardly from a forward end of an arm $0 which extends from a clamp having opposed U-shaped portions 5?; and 56 separated by a cylindrical portion 54 disposed in the bolt recess 46.
  • Arm 5'6 extends rearwardly of recess 46 and engages the body of the bolt to urge claw 38 inwardly of the forward face or" the bolt.
  • the U-shaped portion 556 serves as a lug, which is received in the slot 28 of the barrel extension ll, to hold the extractor in fixed angular position in the bore 2? of the barrel extension when the bolt is rotated.
  • the firing pin is carried by the bolt 26 in a slot 53 which extends longitudinally of the bolt.
  • Cartridge ejector pin extends from the base of the body of the bolt 26.
  • the inner end of the pin 55' is seated against a coil spring 57 so that the ejector pin is spring loaded and functions with the extractor 36 to eject expended cartridges from the barrel extension lllt through the port 34.
  • the firing pin 40 is of one piece construction slidable longitudinally in the slot 53. It is held in place Within the slot by means of projections 57.
  • the after end portion of the firing pin is of sufficient width w whereby a shoulder 59 is provided to engage the breech end face of the barrel extension limiting the forward movement of the firing pin when the rifle is fired.
  • the extent of protrusion of the firing pin from the bolt is a function of the length of the bolt, the length of the firing pin forwardly of the shoulder 59, and the depth of the machined recess 33. It will thus be realized that the firing pin protrusion can be accurately controlled during production of the barrel by control of the depth of the recess 38.
  • Recess 33 is located on the end face of the barrel extension Ill so that the firim pin can protrude from the bolt only when the bolt is in its locked position. Whenever the bolt is out of the locked position, the firing pin carried thereby will not be aligned with recess 33. This means that a round in the chamber cannot be fired unless the bolt is locked.
  • the rifle embodying this invention includes a firing mechanism (FIG. 2) which comprises a trigger 60, sear 62, spring 63, and hammer 64 mounted in the housing 12 which also may have a trigger guard 66 formed integrally therewith. These components function to cause the hammer to forcibly strike the rear end 67 of the firing pin iii when the trigger is pulled. When the bolt 26 is retracted, it engages the hammer 64 causing the firing mechanism to be cocked as shown in FIG. 2.
  • the firing mechanism is the same as disclosed in copending application Serial No. 309,991 to which reference may be had if further details are desired.
  • the extractor 36 As the bolt is rotated the extractor 36 is held in a fixed angular position with the lug portion 56 extending into slot 28.
  • the sear 62 releases the spring loaded hammer 64- which strikes the rear end 67 of the firing pin 40, driving it forward.
  • the shoulder 59 is received in recess 38 so that the firing pin strikes the cartridge in the chamber 13 firing the round.
  • the bolt handle 4-1 After firing, the bolt handle 4-1 is rotated upward and the firing pin is cammed rearwardly by the cam surface 39 on the rear face of the extension 11. Simultaneously, the lock lug 42 is swung clear of slot and into alignment with longitudinal slot 28, enabling retraction of the bolt.
  • the extractor claw 48 is retracted from cam surface and claw 48 picks up the rim 29 (FIG. 3) of the cartridge case disposed in the chamber.
  • the cartridge case is thus withdrawn from the chamber and ejected through the ejection ports 15 and 34- by the ejector pin 55'. Continued retraction of the bolt recocks the firing mechanism for the next firing cycle.
  • the various elements herein described contribute to a rifle construction which is economical to manufacture but without diminution in performance.
  • the extractor means are simple parts requiring but a minimum expense for manufacture and assembly. In this way the critical tol erances for proper bolt lockup, firing pin protrusion and safety are taken care of in the same component. This obviates the necessity of accurate assembly of a plurality of separate components each having been individually machined for accurate operation.
  • Bolt action rifle construction comprising a barrel having a rifled bore terminating in a cartridge chamber, and a barrel extension integral therewith and having a bore of larger diameter than said chamber extending rcarwardly of said chamber, an access opening through the wall of said barrel extension for insertion and ejection of cartridges therefrom, a top housing overlying the extension of said barrel and having an annular portion telescoped about said barrel, a trigger housing underlying said top housing and said barrel extension, said trigger housing having a firing mechanism mounted thereon and being secured to said top housing, and means for securing said barrel in fixed longitudinal and angular relation to said housings, a bolt slidable and rotatable in the receiver barrel extension, said top housing further having an opening aligned with said access opening for the insertion and discharge of cartridges from said extension, said barrel extension having a longitudinal slot formed therein and a transverse slot connecting therewith adjacent the breech end of the rifled bore, said bolt hav ing a lock lug projecting radially therefrom and slid
  • Bolt action rifle comprising a barrel, a bolt slidable and rotatably mounted in the rear end of said barrel for movement between a loading position and a firing position, said barrel having an opening permitting insertion of a cartridge in advance of the bolt, and also permitting discharge of a cartridge from the barrel when the bolt is in its loading position, said barrel having a longitudinal slot formed therein and a transverse slot connecting therewith at the forward end thereof, said bolt having a lug projecting laterally therefrom and slidable in said longitudinal slot and received by said transverse slot upon rotation of said bolt to lock same in its firing position, said bolt having a circumferential groove adjacent its forward end and to the rear of said lug and an extractor claw formed of resilient sheet metal and comprising a band portion rotatably received by said groove, said band portion having an outwardly projecting U-shaped lug received by the longitudinal slot in said barrel and an outwardly projecting U-shaped bridge opposite said U-shaped lug, a rearwardly extending arm projecting from said bridge and engageable with
  • a rifle construction comprising a barrel, a bolt movable relative to the barrel between a loading position and a firing position, said bolt being rotated relative to the barrel to lock it in its firing position, said barrel having a firing chamber into which a cartridge is rammed as the bolt is moved to its firing position, an extractor claw rotatably mounted on said bolt and having a forwardly projecting yieldable arm with inturned fingers for engaging the rim of the cartridge and extracting it from the firing chamber, a relatively fixed surface for camming said arm away from said cartridge, said surface being disposed within the outline of said cartridge rhn so that said fingers will engage the rim and extract the cartridge from the firing chamber when the bolt is moved toward its loading position, and a spring loaded pin projecting from the front face of the bolt to flip the cartridge over said fingers and discharge it from the rifle as the bolt is moved to its loading position.
  • Bolt action rifle comprising a bolt having a radially extending lock lug adjacent its forward end, a firing pin slidable longitudinally on said bolt and having a shoulder adjacent its outer end, an integral barrel having a rifled bore, a second bore extending from said rifled bore and of larger diameter than the first named bore, the second bore having a lock lug receiving slot for holding the bolt in breech locking position, the end Wall of said second bore having a recess to receive the shoulder of said firing pin when the bolt is locked and a cam surface for retracting said firing pin to a safe position Whenever the bolt lock lug is not in said slot.

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Description

1, 5 L. ELKAS 3,203,129
BOLT ACTION RIFLE BARREL CONSTRUCTION Filed NOV. 19, 1965 2 Sheets-Sheet 1 INVENTOR.
L OU/S EL KAS BY MW -7144 Aug. 31, 1965 ELKAS 3,2
BOLT ACTION RIFLE BARREL CONSTRUCTION Filed Nov. 19, 1963 2 Sheets-Sheet 2 WI ulllgm v w m' M INVENTOR.
LOU/5 ELKAS BY WW 4-772? United States Patent 3,203,129 BttlLT A'CTTUN RTFLE BARREL (JUNSTRUETTSN Louis Eilras, Agawam, Mass, assignor to lErnhart 't'lorporation, a corporation of 'tjonnecticut Filed Nov. 1'9, 1963, Ser. No. 324,670 4 Qlaims. ttCl. l27e) This invent-ion relates to bolt action rides and more particularly to barrel construction for such rifles.
The principal object of this invention is to provide a barrel construction for bolt action rifles which may be produced by simplified and economical manufacturing techniques Without impairment or" the operational characteristics of the rifle.
The objective of this invention is achieved by extending the barrel beyond the breech, thus providing a single unit which acts as a rifle barrel and a member for locking and guiding the front end of the bolt through its full travel. In this Way all the requisite machining operations, required for accurate and safe bolt lock-up and firing pin operation, may be accomplished on a unitary component. The other components which make up rifles embodying this invention may be made by less expensive techniques, as die-casting, since they do not function in connection with guiding and locking the bolt.
The above and other related objects and features of this invention will be apparent from the following description with reference to the drawings, in which:
FIG. 1 is a partial elevation, partially in section, of a rifle embodyin the present invention;
FIG. 2 is a cross sectional view corresponding to H6.
FIG. 3 is a section taken generally on line llllll in FIG. 2 with the bolt moved to its locked position;
FIG. 4 is a section taken along line 1VIV of FIG. 2;
FIG. 5 is an exploded perspective view of the breech end of the barrel and the bolt; and
FIG. 6 is a cross sectional view, on an enlarged scale, of the bolt assembly.
The present invention is embodied in a rifle comprising a barrel Ill, a stock s, a housing 12, which contains the firing mechanism, and a receiver 14. The housing 12 and receiver are held together by screw to, 17 and receive a barrel extension ill, FIG. 5, which extends rearwardly of the cartridge chamber 13 and serves as a slide or receiver for the bolt 26.
The forward end of the receiver 14 comprises an nular section 13 which more or less snugly receives the barrel. A screw 2d extends through the housing 12 for holding the barrel firmly in the receiver The screw 17 extends into a recess in the barrel to position it longitudinally and angularly relative to the housings l2 and 14. The receiver 14 is provided with a loading and ejection port 15. A slot 19 is provided to accommodate sliding and rotating movement of the bolt. A depending Wall 21 serves as the bolt stop. The firing mechanism and barrel assembly are secured to the stock 5 by a screw 24 threaded into the same hole as the screw 2d.
The bolt 2-6 is reciprocably and rotatably disposed in barrel extension iii. The barrel extension has a bore 27 of sufficient diameter to accommodate the bolt and is larger than the rifled bore of the barrel to provide a breech against which the bolt holds a cartridge rim 29 (FIG. 3) when the chamber 13 is closed. The barrel extension is of sufficient length to guide movement of the bolt throughout the length of its stroke. The bore 27 includes a longitudinal slot 23 which extends through the wall of the bore and from the rear end of the barrel extension to a point adjacent the rifle chamber 13. A lock lug receiving slot 3d communicates with and extends upwardly from the longitudinal slot 23. Diametrically opposite the slot 23, is another longitudinal slot 32 provided to accommodate the cartridge extractor. The barrel extension 11 is also provided with an opening or port 34 Which is registered with port 15 in the receiver 14, for the loading and ejection of cartridges from the barrel extension ill. At its forward end, extractor slot 32 terminates in a cam surface 35 (FIGS. 2 and 3) which serves to defiect the extractor 36 outwardly to provide for complete closure of the firing chamber 13 by the bolt.
T he outer end surface of the barrel extension 11 is provided with a recess 38 to accommodate the forward movement of the firing pin dd as Will be hereinafter explained. Cam surface 39 (P16. 5) is also provided to cam the firing pin rearwardiy when the firing chamber of the rifie is unlocked, in this way insuring against accidental discharge of the rifle by action of the firing pin when the bolt is not fully locked.
The bolt 26 comprises an operating lever dll for rotating and sliding the bolt in the barrel extension lll. At its forward end the bolt is provided with a radially extending loci; lug 42 which is slidably received in the longitudinal slot 23 of the barrel extension. When the bolt is rotated to its locked position lug 4-2 is rotated into the slot 36). Rearwardly of the lock log 42 is the extractor band shown generally at 36 (FIG. 5). The extractor is a resilient sheet metal member of one piece construction which is rotatably carried in a groove or recess 56 provided in the body of the bolt.
The extractor 36 includes cartridge case engaging claw 48 formed at its forward end. The claw extends inwardly from a forward end of an arm $0 which extends from a clamp having opposed U-shaped portions 5?; and 56 separated by a cylindrical portion 54 disposed in the bolt recess 46. Arm 5'6 extends rearwardly of recess 46 and engages the body of the bolt to urge claw 38 inwardly of the forward face or" the bolt. The U-shaped portion 556 serves as a lug, which is received in the slot 28 of the barrel extension ll, to hold the extractor in fixed angular position in the bore 2? of the barrel extension when the bolt is rotated. The firing pin is carried by the bolt 26 in a slot 53 which extends longitudinally of the bolt. Cartridge ejector pin extends from the base of the body of the bolt 26. The inner end of the pin 55' is seated against a coil spring 57 so that the ejector pin is spring loaded and functions with the extractor 36 to eject expended cartridges from the barrel extension lllt through the port 34.
The firing pin 40, best shown in FIG. 6 is of one piece construction slidable longitudinally in the slot 53. It is held in place Within the slot by means of projections 57. The after end portion of the firing pin is of sufficient width w whereby a shoulder 59 is provided to engage the breech end face of the barrel extension limiting the forward movement of the firing pin when the rifle is fired. The extent of protrusion of the firing pin from the bolt is a function of the length of the bolt, the length of the firing pin forwardly of the shoulder 59, and the depth of the machined recess 33. It will thus be realized that the firing pin protrusion can be accurately controlled during production of the barrel by control of the depth of the recess 38.
Recess 33 is located on the end face of the barrel extension Ill so that the firim pin can protrude from the bolt only when the bolt is in its locked position. Whenever the bolt is out of the locked position, the firing pin carried thereby will not be aligned with recess 33. This means that a round in the chamber cannot be fired unless the bolt is locked.
The rifle embodying this invention includes a firing mechanism (FIG. 2) which comprises a trigger 60, sear 62, spring 63, and hammer 64 mounted in the housing 12 which also may have a trigger guard 66 formed integrally therewith. These components function to cause the hammer to forcibly strike the rear end 67 of the firing pin iii when the trigger is pulled. When the bolt 26 is retracted, it engages the hammer 64 causing the firing mechanism to be cocked as shown in FIG. 2. The firing mechanism is the same as disclosed in copending application Serial No. 309,991 to which reference may be had if further details are desired.
In operation, with the bolt 26 retracted a cartridge is loaded into the receiver through ports and 34 in the barrel It and receiver 14. The bolt 26 is then slid forward to ram the cartridge into the cartridge chamber 13. As this is done, the extractor claw 4-8 is cammed outwardly by cam surface 35. The bolt operating lever il is then swung downward to lock up the bolt 26 in its firing position with the lug 42 positioned in the slot 30.
As the bolt is rotated the extractor 36 is held in a fixed angular position with the lug portion 56 extending into slot 28. When the trigger is pulled the sear 62 releases the spring loaded hammer 64- which strikes the rear end 67 of the firing pin 40, driving it forward. The shoulder 59 is received in recess 38 so that the firing pin strikes the cartridge in the chamber 13 firing the round.
After firing, the bolt handle 4-1 is rotated upward and the firing pin is cammed rearwardly by the cam surface 39 on the rear face of the extension 11. Simultaneously, the lock lug 42 is swung clear of slot and into alignment with longitudinal slot 28, enabling retraction of the bolt. The extractor claw 48 is retracted from cam surface and claw 48 picks up the rim 29 (FIG. 3) of the cartridge case disposed in the chamber.
The cartridge case is thus withdrawn from the chamber and ejected through the ejection ports 15 and 34- by the ejector pin 55'. Continued retraction of the bolt recocks the firing mechanism for the next firing cycle.
The various elements herein described contribute to a rifle construction which is economical to manufacture but without diminution in performance. By providing means for mounting the bolt directly in the barrel extension integrally formed with the barrel i0 and providing in the extension means for guiding and locking the bolt and controlling the firing pin action, a separate barrel extension type component is eliminated. The extractor means are simple parts requiring but a minimum expense for manufacture and assembly. In this way the critical tol erances for proper bolt lockup, firing pin protrusion and safety are taken care of in the same component. This obviates the necessity of accurate assembly of a plurality of separate components each having been individually machined for accurate operation.
The present disclosure is for illustrative purposes and various modifications will come within the scope of the present invention which is to be derived from the following claims.
Having thus described the invention, what is claimed as novel and desired to be secured by Letters Patent of the United States is:
1. Bolt action rifle construction comprising a barrel having a rifled bore terminating in a cartridge chamber, and a barrel extension integral therewith and having a bore of larger diameter than said chamber extending rcarwardly of said chamber, an access opening through the wall of said barrel extension for insertion and ejection of cartridges therefrom, a top housing overlying the extension of said barrel and having an annular portion telescoped about said barrel, a trigger housing underlying said top housing and said barrel extension, said trigger housing having a firing mechanism mounted thereon and being secured to said top housing, and means for securing said barrel in fixed longitudinal and angular relation to said housings, a bolt slidable and rotatable in the receiver barrel extension, said top housing further having an opening aligned with said access opening for the insertion and discharge of cartridges from said extension, said barrel extension having a longitudinal slot formed therein and a transverse slot connecting therewith adjacent the breech end of the rifled bore, said bolt hav ing a lock lug projecting radially therefrom and slidable in said longitudinal slot and said transverse slot to lock and bolt, and a firing pin slidable on said bolt, said firing pin being cngageable with the rear end face of said barrel extension, said face having a cam surface for retracting the firing pin in response to rotation of the bolt from its locking position.
2. Bolt action rifle comprising a barrel, a bolt slidable and rotatably mounted in the rear end of said barrel for movement between a loading position and a firing position, said barrel having an opening permitting insertion of a cartridge in advance of the bolt, and also permitting discharge of a cartridge from the barrel when the bolt is in its loading position, said barrel having a longitudinal slot formed therein and a transverse slot connecting therewith at the forward end thereof, said bolt having a lug projecting laterally therefrom and slidable in said longitudinal slot and received by said transverse slot upon rotation of said bolt to lock same in its firing position, said bolt having a circumferential groove adjacent its forward end and to the rear of said lug and an extractor claw formed of resilient sheet metal and comprising a band portion rotatably received by said groove, said band portion having an outwardly projecting U-shaped lug received by the longitudinal slot in said barrel and an outwardly projecting U-shaped bridge opposite said U-shaped lug, a rearwardly extending arm projecting from said bridge and engageable with said bolt, :1 forwardly extending arm projecting from said bridge and having inturned fingers disposed in spaced relation from the front face of the bolt for gripping the rim of a cartridge as the bolt is retracted from its firing position, said barrel having an inclined camming surface at the forward end of said access opening which is engaged by said fingers as the bolt is moved to its firing position and a spring operated ejector pin projecting from the front face of the bolt to ilip a cartridge over said extractor fingers upon retraction of the bolt sufficiently toward its loading position for the cartridge to be discharged through said access opening.
3. A rifle construction comprising a barrel, a bolt movable relative to the barrel between a loading position and a firing position, said bolt being rotated relative to the barrel to lock it in its firing position, said barrel having a firing chamber into which a cartridge is rammed as the bolt is moved to its firing position, an extractor claw rotatably mounted on said bolt and having a forwardly projecting yieldable arm with inturned fingers for engaging the rim of the cartridge and extracting it from the firing chamber, a relatively fixed surface for camming said arm away from said cartridge, said surface being disposed within the outline of said cartridge rhn so that said fingers will engage the rim and extract the cartridge from the firing chamber when the bolt is moved toward its loading position, and a spring loaded pin projecting from the front face of the bolt to flip the cartridge over said fingers and discharge it from the rifle as the bolt is moved to its loading position.
4. Bolt action rifle comprising a bolt having a radially extending lock lug adjacent its forward end, a firing pin slidable longitudinally on said bolt and having a shoulder adjacent its outer end, an integral barrel having a rifled bore, a second bore extending from said rifled bore and of larger diameter than the first named bore, the second bore having a lock lug receiving slot for holding the bolt in breech locking position, the end Wall of said second bore having a recess to receive the shoulder of said firing pin when the bolt is locked and a cam surface for retracting said firing pin to a safe position Whenever the bolt lock lug is not in said slot.
References Cited by the Examiner UNITED STATES PATENTS Mcsle 4216 Wisewell 4217 Stergianopulos 42-l9 Febiger 89188 X Crittendon et al 4275 X Heilrnan 4216 Robinson 4216 X BENJAMIN A. BORCHELT, Primary Examiner.
SAMUEL W. ENGLE, Examiner.

Claims (1)

  1. 4. BOLT ACTION FIFLE COMPRISING A BOLT HAVING A RADIALLY EXTENDING LOCK LUG ADJACENT ITS FORWARD END, A FIRING PIN SLIDABLE LONGITUDINALLY ON SAID BOLT HAVING A SHOULDER ADJACENT ITS OUTER END, AN INTERGRAL BARRLE HAVING A RIFLED BORE, A SECOND BORE EXTENDING FROM SAID RIFLED BORE AND OF LARGER DIAMETER THAN THE FIRST NAMED BORE, THE SECOND BORE HAVING A LOCK LUG RECEIVING SLOT FOR HOLDING THE BOLT IN BREECH LOCKING POSITION, THE END WALL OF SAID SECOND BORE HAVE A RECESS TO RECEIVE THE SHOULDER OF SAID FIRING PIN
US324670A 1963-09-13 1963-11-19 Bolt action rifle barrel construction Expired - Lifetime US3203129A (en)

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DEG38679A DE1205423B (en) 1963-09-13 1963-09-13 Multi-loading rifle for hunting purposes
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404480A (en) * 1966-05-24 1968-10-08 Zd Y Jana Svermy Breech bolt assemblies for firearms
US3439441A (en) * 1967-07-03 1969-04-22 Charles F Lawley Mounting of gun barrel and action assembly in gun stock
US3628277A (en) * 1969-07-18 1971-12-21 Gen Motors Corp Round extractor for caseless firearm
US3631622A (en) * 1969-09-08 1972-01-04 Remington Arms Co Inc Extractor-ejector system for firearms
US5440963A (en) * 1991-10-21 1995-08-15 Szecsei; Jozsef Double barrel bolt action repeating rifle
FR2861456A1 (en) * 2003-10-24 2005-04-29 Gerald Chatain Rifle e.g. gun with blow, has latch lever fixed with respect to slide that is mounted slidingly in slide case, where slide has head supported on centering circular carrier formed at one end of barrel and integrated with extractor
US20120005932A1 (en) * 2010-07-06 2012-01-12 Joseph Szecsei Double barrel bolt action rifle
US20180172374A1 (en) * 2016-12-15 2018-06-21 Trackingpoint, Inc. Manual Bolt Action Latch Mechanism
US20230003471A1 (en) * 2019-12-18 2023-01-05 Florian KOHLI Receiver system for a bolt action firearm

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US207056A (en) * 1878-08-13 Improvement in breech-loading fire-arms
US824165A (en) * 1905-12-01 1906-06-26 Percy Wardsworth Wisewell Magazine-gun.
US999271A (en) * 1910-08-09 1911-08-01 Demetrios Stergianopulos Repeating rifle.
US1096615A (en) * 1913-02-19 1914-05-12 Collins C Diboll Automatic shotgun.
US2751702A (en) * 1955-01-19 1956-06-26 Remington Arms Co. Cartridge feeding in a tubular magazine firearm
US2803079A (en) * 1955-09-07 1957-08-20 John T Heilman Locking device for bolt action rifles
US2823480A (en) * 1954-04-02 1958-02-18 Marlin Firearms Co Receiver construction

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US207056A (en) * 1878-08-13 Improvement in breech-loading fire-arms
US824165A (en) * 1905-12-01 1906-06-26 Percy Wardsworth Wisewell Magazine-gun.
US999271A (en) * 1910-08-09 1911-08-01 Demetrios Stergianopulos Repeating rifle.
US1096615A (en) * 1913-02-19 1914-05-12 Collins C Diboll Automatic shotgun.
US2823480A (en) * 1954-04-02 1958-02-18 Marlin Firearms Co Receiver construction
US2751702A (en) * 1955-01-19 1956-06-26 Remington Arms Co. Cartridge feeding in a tubular magazine firearm
US2803079A (en) * 1955-09-07 1957-08-20 John T Heilman Locking device for bolt action rifles

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404480A (en) * 1966-05-24 1968-10-08 Zd Y Jana Svermy Breech bolt assemblies for firearms
US3439441A (en) * 1967-07-03 1969-04-22 Charles F Lawley Mounting of gun barrel and action assembly in gun stock
US3628277A (en) * 1969-07-18 1971-12-21 Gen Motors Corp Round extractor for caseless firearm
US3631622A (en) * 1969-09-08 1972-01-04 Remington Arms Co Inc Extractor-ejector system for firearms
US5440963A (en) * 1991-10-21 1995-08-15 Szecsei; Jozsef Double barrel bolt action repeating rifle
FR2861456A1 (en) * 2003-10-24 2005-04-29 Gerald Chatain Rifle e.g. gun with blow, has latch lever fixed with respect to slide that is mounted slidingly in slide case, where slide has head supported on centering circular carrier formed at one end of barrel and integrated with extractor
US20120005932A1 (en) * 2010-07-06 2012-01-12 Joseph Szecsei Double barrel bolt action rifle
US8381629B2 (en) * 2010-07-06 2013-02-26 Joseph Szecsei Double barrel bolt action rifle
US20180172374A1 (en) * 2016-12-15 2018-06-21 Trackingpoint, Inc. Manual Bolt Action Latch Mechanism
WO2018112201A1 (en) * 2016-12-15 2018-06-21 Trackingpoint, Inc. Manual bolt action latch mechanism
US20230003471A1 (en) * 2019-12-18 2023-01-05 Florian KOHLI Receiver system for a bolt action firearm

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