US2820313A - Bolt-action rifle and firing mechanism therefor - Google Patents

Bolt-action rifle and firing mechanism therefor Download PDF

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Publication number
US2820313A
US2820313A US411525A US41152554A US2820313A US 2820313 A US2820313 A US 2820313A US 411525 A US411525 A US 411525A US 41152554 A US41152554 A US 41152554A US 2820313 A US2820313 A US 2820313A
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United States
Prior art keywords
bolt
sear
rifle
trigger
spring
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Expired - Lifetime
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US411525A
Inventor
Perry Claude Alfred
Wackrow Roger David
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Birmingham Small Arms Co Ltd
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Birmingham Small Arms Co Ltd
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Filing date
Publication date
Priority claimed from GB2418751A external-priority patent/GB741808A/en
Application filed by Birmingham Small Arms Co Ltd filed Critical Birmingham Small Arms Co Ltd
Priority to US411525A priority Critical patent/US2820313A/en
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Publication of US2820313A publication Critical patent/US2820313A/en
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Expired - Lifetime legal-status Critical Current

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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
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/25—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins
    • F41A19/27—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block
    • F41A19/29—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension
    • F41A19/30—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension in bolt-action guns
    • F41A19/31—Sear arrangements therefor
    • 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
    • F41A3/68—Bolt stops, i.e. means for limiting bolt opening movement

Definitions

  • This invention is concerned with improvements in or relating to bolt-action rfles and it is an object of the invention to provide an improved method of removing the bolt from the rifle.
  • the bolt of a bolt action rifle is provided in its forward-end portion with a slot which is arranged to be engaged, when the bolt is at its 'normal limit of rearward movement, by a part of a spring-urged sear, disengagement of the bolt to allow further rearward movement and direct removal from the rifle being effected by rearward movement of the trigger which permits disengagement of the scar and also restrains the spring-urge tending to effect its re-engagement.
  • Fig. 1 is a sectional view of the trigger mechanism of a bolt action rifle
  • Fig. 2 is a partly sectional view of the mechanism with the bolt in its rearward position
  • Fig. 3 is a diagrammatic view of some of the parts shown in Fig. 2 with the trigger drawn rearwardly.
  • Fig. 4 is a view of part of the bolt from underneath;
  • Fig. 5 is a section through the part shown in Fig. 4.
  • a bolt-action rifle is provided with a hollow bolt 1 there being suitably disposed within the bolt a firing pin 3 to which is connected a cocking piece 5.
  • a relatively strong spring 7 is located within the bolt one end of such spring abutting against the rear portion 9 of the bolt and the other end of the spring abutting against a projection 11 on the firing pin.
  • the forward end portion of the bolt is provided with slot 13 formed with a recess 15.
  • a pivotally-mounted sear 17 which is contacted and upwardly urged towards the bolt by a spring-loaded lever 29, the spring 35 of which abuts against a housing member 37, while a trigger catch 25 loaded by a spring 19 has an upper end 26 which is adapted to engage a stop 27 formed on the lever 29.
  • the forward end portion of the sear is provided with a small upwardly-extending portion 21 which is adapted to engage the surface of the bolt and to engage the recess 15 in the aforementioned slot 13 in the bolt under spring pressure as the bolt is drawn rearwardly. This provides a positive stop for the bolt and prevents withdrawal thereof from the rifle. By reason of the shape of the slot forward movement of the bolt to its cocked position from this rearward position is not impeded.
  • the sear 17 engages atent G 2,820,313 Patented Jan. 21, 1958 ice with the cocking piece 5, the sear being held in the cocked position by the stop 27 on the spring-loaded lever 29 contacting with the trigger catch 25.
  • the projection 31 thereon causes the pivotally mounted catch 25 to be turned against its spring 19, thereby releasing the catch from its engagement with the stop 27.
  • the catch then passes through the slot 33 in the lever 29 permitting the sear 17 to be depressed and so release the firing pin 3 under the action of the spring 7.
  • the trigger When, however, it is desired to remove the bolt 1 from the rifle, the trigger is pulled and held to release the sear 17, as seen in Fig. 3.
  • the trigger catch 25 On pulling the trigger with the mechanism in the position shown in Fig. 2, the trigger catch 25 passes through the slot 33 in the lever 29, and by virtue of an inclined face 28 on the upper end 26 of the catch, the lever 29, on being depressed by the sear 17 by a slight forward movement of the bolt, is held by the catch in the depressed position, thereby permitting the sear 17 to remain clear of the bolt 1, which can then be withdrawn from the rifle.
  • a bolt action rifle comprising a bolt movable rearwardly into open position and having a slot in its forward end portion, a sear, a spring-loaded lever to actuate the sear which urges the sear into engagement with the bolt during its rearward movement and into engagement with said slot when the bolt is at its normal limit of rearward movement to prevent removal of the bolt, a spring-loaded catch member engageable with said lever, a trigger pivoted on the rifle, and means operative by depression of the trigger to hold the lever in a depressed position by the catch member to thereby prevent the sear from engaging with said slot during rearward movement of the bolt and while the trigger is held depressed and thereby allow the bolt to be removed.
  • a bolt action rifle as defined in claim 2 wherein said catch member is released from said lever by actuation of the trigger to allow depression of the sear by rearward movement of the bolt, and said catch member is provided with means for holding said lever depressed while the trigger is retained in its depressed position.

Description

Jan. 21, 1958 I c. A. PERRY ETAL 2,820,313
BOLT-ACTION RIFLE AND FIRING MECHANISM THEREFOR 2 Sheets-Sheet 1 Filed Feb. 19, 1954 I r v 9R5 W M WIZEW ATTORNEYS Jan 21, 1958 c. A. P'ERR'YY ETAL I BOLT-ACTION RIFLE AND FIRING MECHANISM TI-QIEREFOR Filed Feb. 19, 1954 2 Sheets-Sheet 2 United tates BOLT-ACTION RIFLE AND FmING MECHANISM THEREFOR Application February 19, 1954, Serial No. 411,525
3 Claims. (CI. 42-16) This invention is concerned with improvements in or relating to bolt-action rfles and it is an object of the invention to provide an improved method of removing the bolt from the rifle.
According to this invention the bolt of a bolt action rifle is provided in its forward-end portion with a slot which is arranged to be engaged, when the bolt is at its 'normal limit of rearward movement, by a part of a spring-urged sear, disengagement of the bolt to allow further rearward movement and direct removal from the rifle being effected by rearward movement of the trigger which permits disengagement of the scar and also restrains the spring-urge tending to effect its re-engagement.
The invention will now be particularly described with reference to the accompanying drawings in which:
Fig. 1 is a sectional view of the trigger mechanism of a bolt action rifle;
Fig. 2 is a partly sectional view of the mechanism with the bolt in its rearward position;
Fig. 3 is a diagrammatic view of some of the parts shown in Fig. 2 with the trigger drawn rearwardly.
Fig. 4 is a view of part of the bolt from underneath;
Fig. 5 is a section through the part shown in Fig. 4.
A bolt-action rifle according to this particular construction is provided with a hollow bolt 1 there being suitably disposed within the bolt a firing pin 3 to which is connected a cocking piece 5. A relatively strong spring 7 is located within the bolt one end of such spring abutting against the rear portion 9 of the bolt and the other end of the spring abutting against a projection 11 on the firing pin. The forward end portion of the bolt is provided with slot 13 formed with a recess 15.
Below the rear end portion of the bolt (considered in its closed position) there is located a pivotally-mounted sear 17 which is contacted and upwardly urged towards the bolt by a spring-loaded lever 29, the spring 35 of which abuts against a housing member 37, while a trigger catch 25 loaded by a spring 19 has an upper end 26 which is adapted to engage a stop 27 formed on the lever 29. The forward end portion of the sear is provided with a small upwardly-extending portion 21 which is adapted to engage the surface of the bolt and to engage the recess 15 in the aforementioned slot 13 in the bolt under spring pressure as the bolt is drawn rearwardly. This provides a positive stop for the bolt and prevents withdrawal thereof from the rifle. By reason of the shape of the slot forward movement of the bolt to its cocked position from this rearward position is not impeded.
In the cocked position of the trigger mechanism for fitinx the rifle, as shown in Fig. 1, the sear 17 engages atent G 2,820,313 Patented Jan. 21, 1958 ice with the cocking piece 5, the sear being held in the cocked position by the stop 27 on the spring-loaded lever 29 contacting with the trigger catch 25. When the trigger 30 is pulled, the projection 31 thereon causes the pivotally mounted catch 25 to be turned against its spring 19, thereby releasing the catch from its engagement with the stop 27. The catch then passes through the slot 33 in the lever 29 permitting the sear 17 to be depressed and so release the firing pin 3 under the action of the spring 7.
On unlocking and drawing the bolt 1 rearwardly for the ejection of a spent cartridge, its normal limit of rearward movement is controlled by the engagement of the portion 21 of the sear 17 with the slot 13 in the bolt, as seen in Fig. 2, the sear being held in engagement with the bolt through the medium of the spring-loaded lever 29.
When, however, it is desired to remove the bolt 1 from the rifle, the trigger is pulled and held to release the sear 17, as seen in Fig. 3. On pulling the trigger with the mechanism in the position shown in Fig. 2, the trigger catch 25 passes through the slot 33 in the lever 29, and by virtue of an inclined face 28 on the upper end 26 of the catch, the lever 29, on being depressed by the sear 17 by a slight forward movement of the bolt, is held by the catch in the depressed position, thereby permitting the sear 17 to remain clear of the bolt 1, which can then be withdrawn from the rifle.
Having thus described our invention, what we claim as new and desire to secure by Letters Patent is:
1. A bolt action rifle comprising a bolt movable rearwardly into open position and having a slot in its forward end portion, a sear, a spring-loaded lever to actuate the sear which urges the sear into engagement with the bolt during its rearward movement and into engagement with said slot when the bolt is at its normal limit of rearward movement to prevent removal of the bolt, a spring-loaded catch member engageable with said lever, a trigger pivoted on the rifle, and means operative by depression of the trigger to hold the lever in a depressed position by the catch member to thereby prevent the sear from engaging with said slot during rearward movement of the bolt and while the trigger is held depressed and thereby allow the bolt to be removed.
2. A bolt action rifle as defined in claim 1, wherein said lever has a slot therein in which said catch member is operable, and including a stop in said slot against which the catch member abuts to lock the sear in engaged relation with the slot in the bolt.
3. A bolt action rifle as defined in claim 2, wherein said catch member is released from said lever by actuation of the trigger to allow depression of the sear by rearward movement of the bolt, and said catch member is provided with means for holding said lever depressed while the trigger is retained in its depressed position.
References Cited in the file of this patent UNITED STATES PATENTS 157,783 Berdan Dec. 15, 1874 413,079 Koka Oct. 15, 1889 853,073 Esser May 7, 1907 1,349,675 Johnson Aug. 17, 1920 1,542,477 Savage June 16, 1925 2,659,994 Yale Nov. 24, 1953
US411525A 1952-04-17 1954-02-19 Bolt-action rifle and firing mechanism therefor Expired - Lifetime US2820313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US411525A US2820313A (en) 1952-04-17 1954-02-19 Bolt-action rifle and firing mechanism therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2418751A GB741808A (en) 1952-04-17 1952-04-17 Improvements in or relating to bolt-action rifles
US411525A US2820313A (en) 1952-04-17 1954-02-19 Bolt-action rifle and firing mechanism therefor

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US2820313A true US2820313A (en) 1958-01-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5551179A (en) * 1995-01-06 1996-09-03 Young; Daniel H. Bolt carrier

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US157783A (en) * 1874-12-15 Hieam bee-dan
US413079A (en) * 1889-10-15 Vitch-koka
US853073A (en) * 1905-12-02 1907-05-07 John William Esser Breech-loading small-arms.
US1349675A (en) * 1919-05-24 1920-08-17 Winchester Repeating Arms Co Bolt-action firearm
US1542477A (en) * 1919-09-10 1925-06-16 Arthur J Savage Firearm
US2659994A (en) * 1950-02-03 1953-11-24 Marion W Yale Self-loading semiautomatic pistol

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US157783A (en) * 1874-12-15 Hieam bee-dan
US413079A (en) * 1889-10-15 Vitch-koka
US853073A (en) * 1905-12-02 1907-05-07 John William Esser Breech-loading small-arms.
US1349675A (en) * 1919-05-24 1920-08-17 Winchester Repeating Arms Co Bolt-action firearm
US1542477A (en) * 1919-09-10 1925-06-16 Arthur J Savage Firearm
US2659994A (en) * 1950-02-03 1953-11-24 Marion W Yale Self-loading semiautomatic pistol

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5551179A (en) * 1995-01-06 1996-09-03 Young; Daniel H. Bolt carrier

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