US3550301A - Trigger mechanism for sporting guns - Google Patents

Trigger mechanism for sporting guns Download PDF

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Publication number
US3550301A
US3550301A US744521A US3550301DA US3550301A US 3550301 A US3550301 A US 3550301A US 744521 A US744521 A US 744521A US 3550301D A US3550301D A US 3550301DA US 3550301 A US3550301 A US 3550301A
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United States
Prior art keywords
arm
trigger
lever
release
trigger mechanism
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
US744521A
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English (en)
Inventor
Alexandr Sergeevic Shesterikov
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.)
ALEXANDR SERGEEVICH SHESTERIKO
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ALEXANDR SERGEEVICH SHESTERIKO
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Filing date
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Publication of US3550301A publication Critical patent/US3550301A/en
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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
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/16—Adjustable firing mechanisms; Trigger mechanisms with adjustable trigger pull

Definitions

  • a trigger mechanism for guns is provided with a spring loaded trigger and a spring loaded sear.
  • a lever having two arms is pivotally supported such that one of the arms is engageable with the trigger and the other arm is engageable with the sear.
  • Two adjusting elements are provided, one for adjusting the release pressure of the mechanism by engaging one arm of the lever, and the other adjusting element for adjusting the pivotal at-rest attitude of the lever by being engageable with the other arm of the lever.
  • the present invention relates to trigger mechanisms of sporting guns.
  • trigger mechanisms of sporting guns comprising a body, a spring-loaded trigger, a spring-loaded sear and a device for the adjustment of the stages of pull and the force of release (hunting carbine KO-56-l BAPC, U.S.S.R.).
  • said known trigger mechanism the force and stages of release or pull are adjusted with the aid of three individual screws so arranged that the carbine must be disassembled.
  • Such an arrangement of the trigger mechanism makes it difiicult to obtain required characteristics as to the stages of pull and force of release.
  • the trigger when pressed cooperates with an adjustment screw, as a result of which the arm of the trigger is altered, which fact does not provide for the stability of the force of release and causes difiiculty in obtaining the required characteristics of release.
  • the disconnection of the bolt stop is elfected by means of a part that is separate from the trigger mechanism and is secured on the receiver, which fact also creates certain difliculties in manufacturing the mechanism and complicates the latters design.
  • the present invention consists of a device for the adjustment of the stages of pull (single or double) and force of release and is constituted as a double-arm lever, secured in the mechanism body, and two adjustment screws cooperating with the arms of said double-arm lever, one of said screws carrying a spring, whereas one arm of the double-arm lever cooperates with the trigger, and its other arm cooperates with the sear.
  • FIG. 1 shows the trigger mechanism according to the invention in a position where the double-arm lever is disengaged from the trigger for a smooth pull at a small force
  • FIG. 2 shows a top view of the sear
  • FIG. 3 shows the trigger mechanism in a position where the double-arm lever is resiliently pressed against the trigger for a smooth controllable pull at a great force
  • FIG. 4 shows the trigger mechanism in a position where the double-arm lever is disengaged from the initial contact 'with the trigger in order to interact with the latter only at the end of its stroke for a double pull;
  • FIG. 5 shows the trigger mechanism in a position where the trigger is disengaged from the sear
  • FIG. 6 shows the trigger mechanism in a position where the double-arm lever interacts with the sear.
  • the trigger mechanism of sporting guns comprises: a body 1 (FIGS. 1, 2, 3, 4, 5 and, 6) connectable to the receiver (not shown in the drawing); a trigger 2 arranged on a pin 3 secured to the body 1; a torsion spring 4 arranged on the pin 3; a sear 5 arranged on a pin 6 placed in the body 1; a spring 7 for returning the sear 5 into the initial position, arranged on a pin 8; and a device 9 for the adjustment of the stages of pull and force of release, said latter device 9 being constituted as a double-arm lever secured in the body 1 by means of a pin 10, an adjustment screw 11, against which the double-arm lever of the device 9 is resting, a spring 12 connected to the body 1. by means of an adjustment screw 13 and cooperating with the device 9.
  • the trigger 2 is irregularly shaped and consists of a release lever 14, a projection 15 cooperating with the sear 5 and device 9, a projection 16 intended for cooperation with the safety catch (not shown in the drawing), and a recess 17 to receive the torsion spring 4.
  • the scar 5 is constituted as an L-shaped lever having one end 18 which cooperates with the projection 15 of the trigger 2 and with the double-arm lever of the device 9, while the other end 19 is provided with a projection 20 (FIG. 2) serving as the bolt stop and with a projection 21 serving as the ejector.
  • the double-arm lever of the device 9 has an arm 22 (FIG. 1), cooperating with the spring 12 and projection 15 of the trigger 2, and an arm 23 (FIG. 6) cooperating With the sear 5 when the bolt stop is disengaged.
  • the arm 23 of the double-arm lever rests by its arm 23 against the adjustment screw 11 with whose aid the stages of pull or force of release is adjusted.
  • the trigger mechanism of sporting guns operates in accordance with the following principle.
  • the adjustment of the trigger mechanism to the required source of release is effected with the aid of the adjustment screw 11, whose rotation may vary the pivotal at-rest attitude of the double-arm lever of the device 9, as a result of which the release may be either smooth or with a warning.
  • the double-arm lever of the device 9 (FIG. 4) is set with the aid of the adjustment screw 11 into a position at which the trigger 2 is turned around the pin 3 by way of pressing the release lever 14.
  • the torsion spring 4 is compressed until the projection starts cooperating with the arm" 22 of the double-arm lever of the device 9, whereupon the spring 12 starts operating.
  • the force of release grows sharply, and a continued pressure upon the release lever 14 results in the disengagement of the projection 15 of the trigger 2 from the end 18 of the sear 5.
  • the required force of release is achieved in all cases by way of rotating the adjustment screw 13, which acts upon the spring 12, thereby reducing or increasing the force of release.
  • the release lever 14 For disengaging the bolt stop (projection 20, FIG. 6) from the bolt (not shown in the drawings), the release lever 14 should be pressed.
  • the trigger 2 turns around the pin 3.
  • the projection 15 presses against the arm 22 0f the double-arm lever of the device 9, which lever turns around the pin 10 until the other arm 23 starts cooperating with the end 18 of the sear 5.
  • the present trigger mechanism is simple in design and manufacture. Required characteristics of the stages of pull and force of release may be obtained without having rccourse to complicated adjusting operations.
  • the employment of the trigger mechanism in accordance with the present invention facilitates the adjustment thereof as to the stages of pull and force of release without disassembling the carbine.
  • the bolt may be disengaged.
  • a trigger mechanism for guns comprising a body, a trigger pivotally connected in said body, a scar pivotally connected in said body and engageable with said trigger, a lever including a pair of arms pivotally connected in said body, one arm of said lever being engageable with said trigger and adapted for being pivotally displaced thereby, first adjusting means engageable With said one arm of said lever for adjusting a prescribed release. presr,

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lock And Its Accessories (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Springs (AREA)
US744521A 1968-06-22 1968-07-12 Trigger mechanism for sporting guns Expired - Lifetime US3550301A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1703645A DE1703645C3 (de) 1968-06-22 1968-06-22 Abzugseinrichtung für Sport- und Jagdgewehre
US74452168A 1968-07-12 1968-07-12

Publications (1)

Publication Number Publication Date
US3550301A true US3550301A (en) 1970-12-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
US744521A Expired - Lifetime US3550301A (en) 1968-06-22 1968-07-12 Trigger mechanism for sporting guns

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US (1) US3550301A (de)
DE (1) DE1703645C3 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4910903A (en) * 1988-03-14 1990-03-27 Steyr-Daimler-Puch Ag Trigger mechanism, particularly for sports pistols
US20060080880A1 (en) * 2004-10-14 2006-04-20 Taylor Robert C Adjustable cartridge chambering mechanism
US20120117842A1 (en) * 2010-11-17 2012-05-17 Blaser Finanzholding Gmbh Trigger mechanism of a repeating rifle
US9170063B2 (en) 2010-05-12 2015-10-27 John M. Krieger Firearm trigger assembly
US10295286B1 (en) * 2013-06-26 2019-05-21 Savage Arms, Inc. Firearm having a tool-less trigger pull adjustment
US11098970B2 (en) * 2019-07-30 2021-08-24 Arthur J. Elftmann, JR. Adjustable pull trigger assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH662876A5 (de) * 1984-10-25 1987-10-30 Haemmerli Ag Abzugvorrichtung an einer faustfeuerwaffe.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4910903A (en) * 1988-03-14 1990-03-27 Steyr-Daimler-Puch Ag Trigger mechanism, particularly for sports pistols
US20060080880A1 (en) * 2004-10-14 2006-04-20 Taylor Robert C Adjustable cartridge chambering mechanism
US9170063B2 (en) 2010-05-12 2015-10-27 John M. Krieger Firearm trigger assembly
US20120117842A1 (en) * 2010-11-17 2012-05-17 Blaser Finanzholding Gmbh Trigger mechanism of a repeating rifle
US8656619B2 (en) * 2010-11-17 2014-02-25 Blaser Finanzholding Gmbh Trigger mechanism of a repeating rifle
US10295286B1 (en) * 2013-06-26 2019-05-21 Savage Arms, Inc. Firearm having a tool-less trigger pull adjustment
US11098970B2 (en) * 2019-07-30 2021-08-24 Arthur J. Elftmann, JR. Adjustable pull trigger assembly
US11614294B2 (en) 2019-07-30 2023-03-28 Arthur J. Elftmann, JR. Pivot arm trigger assembly

Also Published As

Publication number Publication date
DE1703645A1 (de) 1972-04-13
DE1703645B2 (de) 1979-05-10
DE1703645C3 (de) 1980-01-03

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