US1172069A - Short straight-pull breech-action for military hand-firearms. - Google Patents

Short straight-pull breech-action for military hand-firearms. Download PDF

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Publication number
US1172069A
US1172069A US86885414A US1914868854A US1172069A US 1172069 A US1172069 A US 1172069A US 86885414 A US86885414 A US 86885414A US 1914868854 A US1914868854 A US 1914868854A US 1172069 A US1172069 A US 1172069A
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United States
Prior art keywords
breech
bolt
action
sleeve
locking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US86885414A
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English (en)
Inventor
Hans Stamm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saurer AG
Original Assignee
Adolph Saurer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Adolph Saurer AG filed Critical Adolph Saurer AG
Priority to US86885414A priority Critical patent/US1172069A/en
Application granted granted Critical
Publication of US1172069A publication Critical patent/US1172069A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F41A3/20—Straight-pull operated bolt locks, i.e. the operating hand effecting only a straight movement parallel to the barrel axis

Definitions

  • Z/Zfnessas fwezzafwww.. @ZW am HANS STAM, Y0I' ST.
  • a so-called grip or a rectilinearly movable locking member in the breech frame, in order to effect the ⁇ lockin andj unlocking, have already been made own.
  • the locking nibs are fitted in front on the breech bolt head, owing to which the turning member, the -grip or the locking member has ⁇ to be pushed over the bolt from behind.
  • spiral grooves must be provided for the purpose of rotating thebreech bolt, these grooves being cut in the surface'4 of the bolt, the consequence of which is that the back endof the bolt is very much weakened on the one hand by these grooves, and on the other hand bythe principal bore in the breech bolt which serves to receive the striking mechanism or device, and.' also by a screw-thread outside or inside the back end of the bolt, vwhich serves toreceive a nut or guide socket.
  • this weakened bolt end is furthermore provided on its front face with lnotches in which, for the purpose of automatically grlpping and securing the striking p1na securing'member connected, with ythe latterY must move,r this weakened notched surface at the rear v end of the Abolt y will 'rapidly wear away and in ⁇ course of time lose its shape.
  • the provision of the lookin nibs on the front-end of the breech bo t involves an extremely lon breech mechanism
  • Fi re 1 is a vertical longitudinal section through the locked breech mechanism after firing a shot.
  • Fig. 2 is a horizontal-longitudinal section through the breechaction ,shown in Fig. 1.
  • Fig. 5 is a section on the line A-B of Fig. 1 with the safety device in side elevation.
  • the military firearm possesses a straight pullybreechy action which is movable in a straight line to and fro in astationary breechframe 1 rigidly fixed to the a handle 6, by meansof which the locking sleeve or the entire breech action can be actuated.
  • the locking nibs 4 For receiving the locking nibs 4 when locking theV breech mechanism, there are provided at the rear end of the breech frame l, the two locking recesses 7 formed with rear abutments 8 (Figs. 1 and 4).
  • the breech bolt In order to impart the necessary rotary movement to the breech bolt for locking and unlocking, the breech bolt is formed with helical grooves 9 into which the locking sleeve 5 projects with corresponding helical l ribs 10. 'The locking sleeve 5 has such longitudinal movement on the breech bolt 3, that when shifted on the bolt it imparts to the latter a quarter turn of 90, the nibs 4 being turned in to the recesses 7 or out of them.
  • the movement of the locking sleeve on the breech bolt is limited in its back-v ward movement on the breech bolt by the stop face 3 on the breech bolt (Fig.,1) and is limited in its forward movement thereon by a nose 1l on the cartridge extractor 12 of the breech bolt, the said nose extending into a recess 5 in the locking sleeve 5 (Figs. 2 and 3).
  • the locking sleeve 5 is guided by lateralv ledges 13 in corresponding longitudinal grooves 14 in the breech frame 1. These grooves 14, in the rear ends of which the nibs 4 can also be guided, are in connection with the recesses' 7 so that the Ynibs can be turned out of the groovesl14 into therecesses and vice versa out of the recesses into the grooves.
  • breech holder which consists of a lever 15 mounted at the side of the breech frame, and formed y with a nose 16 which 'projects into the latter, under the action of a, spring.
  • a recess 17 is also provided at the front end of the breech bolt a recess 17, into which the nose 16 of the lever 15 can snap when the breech is open and thus prevent the breech action from being completely drawn out of the frame
  • the striking device In the breech bolt 3 the striking device is mounted; it consists of the striking pin 18 which carries at its front end. the removable tip 19 and at its rear end -a head 20, formed with .a lateral -safety arm 21 (Fig. 2).
  • the striking pin is ,under the action of the main spring 22 which bears at one end against the striking pin tip 19 and at the other end against a sleeve 23 screwed into the breech bolt 3 (Figs. 1-3).
  • This sleeve' has a rear cylindrical socket 24 to receive a safety sleeve 25, which is in turn designed to receive the striking pin head 20.
  • the notches in the guide socket 24 are only provided to allow the arm 21 to enter the notches in the safety sleeve; they are deeper than the notches 26 and 27 (Figs. 2 and i
  • the sleeve 25 is coupled to the striking pin by means of-a stud 28 mounted in it, which projects into a groove 29 in the striking pin head 20.
  • the groove 29 is semiannular to allow of rotating the striking pin relatively to the safety sleeve; at its end it is made wide enough to permit of drawing back the striking'pin in the safety sleeve 25 for the purpose of securing it.
  • a ledge 25 (Fig.
  • the safety nose 31 which, for the purpose of securing the breech bolt 3, works in conjunction with two notches 32 and 33 at an angle of 90 to each other provided at the back end of the breech bolt.
  • the notch 32 is deeper than the notch 33 (Fig. 2) to enable'the striking pin to shoot forward with the safety sleeve on ring.
  • the notch 32 on the other hand, in which the nose 31 lies after unlocking the breech bolt, and which is connected withv the notch 32 by an oblique surface, serves the purpose of keeping the striking pin in its secured drawn back position.
  • the spring cartridge ejector which is itted in a vertically movable manner beneath the breech bolt, and for the purpose of ejecting the empty cases of the fired carders it impossible to fire the shot before the I breech bolt is completely locked.
  • Tliemethod of handling and the 'operation of the firearm is as follows: The breech action is shown in Figs. 1 and 2 in the lockedposition after firing a shot, the locking sleeve 5 is in its front position on the breech bolt and the safety sleeve 25 pro 'ects with the nose 31 ⁇ into the deeper notch 2 at the back end of the breech bolt, while the safety arm 21 of the striking pin 18 isin the deeper notch 26 of the safet sleeve 25, z'. e. in the unsecured position.
  • the lookin sleeve 5 is drawn back; this, in the rst instance, owing to the helicirl grooves 9 and the screw pieces 10, causes the breech bolt 3 to turn, that is unlocks the breech action, and owing to the transverse step on the locking nibs 4, the empty cartridge case which has been fired is very much loosened.
  • the striking pin 18 is drawn farther back.
  • the last operation is effected by the safety sleeve 25 which is shifted back by the rising slopn surface between the notches 32 and'33 0.3) at the buck end of the breech bolt, engaging the nose 31, which under the pressure of the main spring. snaps into the shallower safety notch 33 at'the end of said surface, owing to which the striking pintip 19 is also drawn away from the cartridge percussion cap and held or secured in thisdrawn back position.
  • the breech bolt 3 is in this way prevented from making an unintended further turn.
  • pin 18 can, as already mentioned,A
  • the striking pin 18 is by its arm 21, together with the safety sleeve, drawn from behind out of the guide socket 24 and the entire breech action has thus been taken apart. It is not necessary that the locking sleeve 5 should also be slipped forward over the breech bolt except in the case of general cleaning or greasing.I In this case only the spring cartridge extractor 12 is presseddown slightly by its 'nose 11, whereupon the locking sleeve can straightway be slipped off the breech bolt.
  • a breech frame having integral locking nibs on its rearend adapted to engage recesses in the back part of the breech frame, a locking sleeve guided rectilinearly in the latter and on the breech bolt in front of the nibs, and means on the sleeve and bolt for locking the latter in the frame.
  • a breech fragile In a straight ppll breech action for firearms, a breech fragile, a breech bolt having integral locking nibs on its rear end adapted to"engage recesses in the back part of the breech frame, a locking sleeve guided rectilinearly in the latter and on the breech bolt, helical ribs and grooves on the -sleeve and bolt for locking the latter in the frame, a
  • a breech frame a breech bolt having integral locking nibs on its rear end adapted to engage recesses in the back -part of the breech frame, a locking sleeve guided rectilinearly in the latter and on the breech bolt, said sleeve havingr helical ribs ena'aginghelical grooves in the bolt for locking the latter in the frame, means on ⁇ the breech bolt for limiting the backward and' forward movement of the sleeve on the bolt, and means to limit the opening movement of the breech action.
  • a breech frame In a straight pull breech action for firearms, a breech frame, a breech bolt having.
  • integral lockingnibs on its rear end adapted to engage recesses in the back part of the breech frame, aalocking sleeve guided rectilinearly in the latter and on the breech bolt,
  • a breech frame a breech bolt having integral locking nibs on its rear endadapted to engage recesses in the back part of the breech framefa locking sleeve guided rectilinearly in the latter and on the breech bolt, means on the sleeve andbolt for locking the latter in the frame, a searmechanism, and means for preventing the unlocking of the breech bolt o-n firing and to prevent the operation of the Sear when the breech action is unlocked'.
  • an upwardly projecting member arranged to be moved by the scar into the casing adjacent one of the locking nibs to prevent un l locking ofthe breech'bolt on firing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Component Parts Of Construction Machinery (AREA)
US86885414A 1914-05-06 1914-10-27 Short straight-pull breech-action for military hand-firearms. Expired - Lifetime US1172069A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US86885414A US1172069A (en) 1914-05-06 1914-10-27 Short straight-pull breech-action for military hand-firearms.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH41093X 1914-05-06
US86885414A US1172069A (en) 1914-05-06 1914-10-27 Short straight-pull breech-action for military hand-firearms.

Publications (1)

Publication Number Publication Date
US1172069A true US1172069A (en) 1916-02-15

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US86885414A Expired - Lifetime US1172069A (en) 1914-05-06 1914-10-27 Short straight-pull breech-action for military hand-firearms.

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SE (1) SE41093C1 (https=)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478566A (en) * 1948-06-04 1949-08-09 Jr James Campbell Detachable pin for firearms
US2655753A (en) * 1950-04-26 1953-10-20 Salas Joseph Frank Magazine unloading device for bolt action firearms
US2657489A (en) * 1950-04-03 1953-11-03 Jr Leonard Franklin Robertson Magazine floor plate release mechanism
US3103757A (en) * 1958-11-20 1963-09-17 Savage Arms Corp Bolt action rifle with ejector housing on magazine box
USD1065415S1 (en) * 2023-05-01 2025-03-04 Kimber Ip, Llc Rifle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE442549B (sv) * 1984-05-04 1986-01-13 Larsson Lars Gunnar Geversmekanism av vridlastyp

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478566A (en) * 1948-06-04 1949-08-09 Jr James Campbell Detachable pin for firearms
US2657489A (en) * 1950-04-03 1953-11-03 Jr Leonard Franklin Robertson Magazine floor plate release mechanism
US2655753A (en) * 1950-04-26 1953-10-20 Salas Joseph Frank Magazine unloading device for bolt action firearms
US3103757A (en) * 1958-11-20 1963-09-17 Savage Arms Corp Bolt action rifle with ejector housing on magazine box
USD1065415S1 (en) * 2023-05-01 2025-03-04 Kimber Ip, Llc Rifle

Also Published As

Publication number Publication date
SE41093C1 (https=) 1916-08-02

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