US3756121A - Combination action spring guide and buffer for automatic pistol - Google Patents

Combination action spring guide and buffer for automatic pistol Download PDF

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Publication number
US3756121A
US3756121A US00192072A US3756121DA US3756121A US 3756121 A US3756121 A US 3756121A US 00192072 A US00192072 A US 00192072A US 3756121D A US3756121D A US 3756121DA US 3756121 A US3756121 A US 3756121A
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US
United States
Prior art keywords
slide
buffer
barrel
frame
spring
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
US00192072A
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English (en)
Inventor
R Roy
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.)
CFPI Inc A CORP OF
COLT LICENSING A DE Ltd PARTNERSHIP LP
CII Holdings Inc
Original Assignee
Colt Industries Operating Corp
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Assigned to COLT INDUSTRIES, INC., A CORP. OF PA reassignment COLT INDUSTRIES, INC., A CORP. OF PA MERGER (SEE DOCUMENT FOR DETAILS). 10-28-86 Assignors: CENTRAL MOLONEY INC., A CORP. OF DE, COLT INDUSTRIES OPERATING CORP. A CORP. OF DE
Assigned to CFPI INC. reassignment CFPI INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CII HOLDINGS INC., A CORP. OF DE
Assigned to CII HOLDINGS INC. reassignment CII HOLDINGS INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: COLT INDUSTRIES INC., A CORP. OF PA.
Assigned to COLT LICENSING LIMITED PARTNERSHIP, A DE LIMITED PARTNERSHIP reassignment COLT LICENSING LIMITED PARTNERSHIP, A DE LIMITED PARTNERSHIP ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CFPI INC., A CORP. OF DE
Assigned to CREDITANSTALT-BANKVEREIN reassignment CREDITANSTALT-BANKVEREIN SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COLT'S MANUFACTURING COMPANY, INC.
Anticipated expiration legal-status Critical
Assigned to CII HOLDINGS INC., A CORP. OF DE, CFPI INC., A CORP. OF DE reassignment CII HOLDINGS INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: COLT LICENSING LIMITED PARTNERSHIP, A L.P. OF DE
Assigned to COLT'S MANUFACTURING COMPANY, INC. reassignment COLT'S MANUFACTURING COMPANY, INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CREDITANSTALT-BANKVERIN
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
    • F41A25/00—Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
    • F41A25/22—Bearing arrangements for the reciprocating gun-mount or barrel movement
    • 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
    • F41A3/78—Bolt buffer or recuperator means
    • F41A3/82—Coil spring buffers
    • F41A3/86—Coil spring buffers mounted under or above the barrel

Definitions

  • a primary object of this invention is to provide a significantly compact buffer for use with an automatic pistol to absorb slide recoil impact energy.
  • Another object of this invention is to provide such a buffer which is not only compact but economical to manufacture and which is particularly suited to facilitate assembly and disassembly of operating components of the pistol.
  • FIG. 1 is a fragmentary side view, partly broken away and partly in section, of a pistol incorporating this invention and showing a slide assembly of the pistol in a forward operative limit position;
  • FIG. 2 is a view similar to FIG. 1 wherein the slide assembly is in a rear operative limit position;
  • FIG. 3 is a reduced side view of the slide assembly
  • FIG. 4 is a fragmentary isometric view of a rear end portion of another embodiment of a combination spring guide and buffer incorporated in this invention.
  • an automatic pistol incorporating this invention is shown generally comprising a frame or receiver 12, barrel 14 and operating slide 16 suitably supported for reciprocable sliding movement on the receiver 12.
  • the slide 16 moves rearwardly to an extent limited by a slide stop surface or abutment wall 18 on the receiver 12.
  • Shoulders 20 inside slide 16 engage abutments 22 on an enlarged rear barrel portion 24 to drive barrel 14 rearwardly with the slide 16 from its forward position shown in FIG. 1.
  • Barrel 14 disengages from slide 16 during its rearward movement and is arrested at an intermediate point in the travel of the slide 16 to provide for cartridge extraction and ejection, and then to strip a live round from a magazine (not shown) to be chambered, such as the round 26 shown in FIG. 1, upon return forward movement of the slide 16 under the force of its main spring or action spring 28.
  • Pistol 10 utilizes a well known firing operation wherein pivoting its trigger 30 rearwardly about its pivot pin 32 actuates a hammer, not shown, causing the chambered round 26 to be fired in a conventional manner whereupon automatic operation of the slide assembly 16 is effected.
  • barrel 14 is precisely located during reciprocation of the slide 16 by a positive barrel guide and stop mechanism 34.
  • Mechanism 34 includes a barrel lug 36 projecting downwardly from the rear barrel portion 24 in a vertical plane extending through a longitudinal center line of the barrel 14 for limited captured movement between a pair of camming pins 38, 40 extending in longitudinally spaced relation across receiver 12.
  • Barrel lug 36 has front and rear abutments 42 and 44 of arcuate shape conforming to confronting peripheral surfaces of the front and rear camming pins 38 and 40 which are of circular cross section.
  • rear abutment 44 engages a lower portion of rear camming pin 40 which cams barrel 14 downwardly to an extent limited by full contact engagement between the confronting surfaces of the rear lug abutment 44 and rear camming pin 40, thereby establishing a lowered rear limit position (FIG. 2) for the barrel 14 in disengaged relation to slide 16 to permit it to continue to move rearwardly uninterruptedly to a rear operative limit position (FIG. 2).
  • Camming pin 38 is fixed forwardly of and below rear camming pin 40 and provides a relatively large area of intersurface contact with the barrel lug 36 to positively guide and stop barrel 14 in a raised forward position in locked engagement with the slide 16 in its forward operative limit position (FIG. 1) upon return forward movement of the slide 16 under the biasing force of its spring 28 which was previously compressed during slide recoil.
  • a combination guide rod and buffer having a one-piece form sustaining body of a suitable tough resilient plastic with a radially enlarged head 52 serving bothas a spring seat and as an abutment surface for spring guide sleeve 54.
  • Sleeve 54 is formed as an integral part of slide 16 on a forward lower end of the slide 16, and barrel bushing 55 is carried by slide 16 in overlying parallel relation to sleeve 54.
  • the combination guide rod and buffer 50 is preferably formed of a suitable high impact resin which, for example, may be selected from a family of nylon resins such as that sold under the trademark Zytel manufactured by E. l. dupont de Nemours & Co. Such nylon resins have been found to work satisfactorily to resist abrasion and repeated impact loads over a wide range of temperatures while additionally resisting the action of salts and salt solutions and being unaffected by electrolytic corrosion.
  • a suitable high impact resin which, for example, may be selected from a family of nylon resins such as that sold under the trademark Zytel manufactured by E. l. dupont de Nemours & Co.
  • nylon resins have been found to work satisfactorily to resist abrasion and repeated impact loads over a wide range of temperatures while additionally resisting the action of salts and salt solutions and being unaffected by electrolytic corrosion.
  • Zytel" nylon resins have provided desirable characteristics for the combination guide rod and buffer 50 in that its mechanical toughness increases with age, and both moisture and heat desirably increase the flexibility of the nylon component, conditioning it to absorb more energy before any potential rupture as well as its impact resistance which is of crucial importance in an application such as the disclosed use in repeatedly absorbing impact energy of the slide 16 over an extended period of time.
  • the resiliency of the nylon part ensures deformation under load and return to its original dimensions without noticeable wear.
  • the nylon combination guide rod and buffer 50 moreover is neither affected by lubricating oils and greases nor by most chemicals and is particularly adapted to be quickly and easily molded with little or no finishing required.
  • nylon resins e.g., Zytel 101
  • Zytel 101 has approximately 25 percent elongation at a tensile stress yield point of about 8500 psi under conditions of 73 F temperature and 2.5 per cent moisture content while having an ultimate strength of about 11,000 psi and approximately 300 percent elongation under the same conditions.
  • this same nylon resin under average air exposure conditions of 73 F and 2.5 per cent moisture content conditions has been found to have a modulus of elasticity of about 200,000 psi, the modulus of elasticity under such conditions ranging from about 500,000 psi at 35 F m 70,000 psi at 220 F.
  • a gas recoil operated automatic pistol comprising an elongated frame, a main coil compression spring extending longitudinally of the frame, a slide removably mounted on the frame for reciprocating longitudinal movement between forward and rear positions, the slide having a forward portion with a sleeve integrally formed thereon, the spring having a forward end engaging the slide within its sleeve and urging the slide toward its forward position, a barrel mounted in assembled relation to the slide for assembly and disassembly therewith relative to the frame, the barrel having a depending barrel camming lug disposed in rearwardly spaced alignment with the slide sleeve, the frame having a slide stop surface disposed in alignment with the path of movement of the slide, and a combination spring guide and buffer having a one-piece elongated body formed in its entirety of a tough form sustaining resilient nonmetallic material, the body having a rod portion received at least in part within the spring and the slide sleeve to guide and support the spring, the body having an integral end portion formed as

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
US00192072A 1971-10-26 1971-10-26 Combination action spring guide and buffer for automatic pistol Expired - Lifetime US3756121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19207271A 1971-10-26 1971-10-26

Publications (1)

Publication Number Publication Date
US3756121A true US3756121A (en) 1973-09-04

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ID=22708113

Family Applications (1)

Application Number Title Priority Date Filing Date
US00192072A Expired - Lifetime US3756121A (en) 1971-10-26 1971-10-26 Combination action spring guide and buffer for automatic pistol

Country Status (6)

Country Link
US (1) US3756121A (de)
BE (1) BE789863A (de)
DE (1) DE2251861A1 (de)
FR (1) FR2158885A5 (de)
GB (1) GB1368581A (de)
IT (1) IT969938B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754689A (en) * 1987-03-30 1988-07-05 Colt Industries Inc. Combination plastic spring guide and buffer for automatic pistol
US4896581A (en) * 1988-12-30 1990-01-30 Richard Cole Accurizer
US4974493A (en) * 1988-12-20 1990-12-04 Yeffman Paul L Shock absorbing buffer and recoil reducer
US5060555A (en) * 1990-03-30 1991-10-29 Smith & Wesson Corp. Slide decelerator for a firearm
US5069110A (en) * 1991-04-09 1991-12-03 Menck Thomas W Impact buffering recoil mechanism
US5076139A (en) * 1990-08-29 1991-12-31 Hiett Charles A Buffer for firearms
US5127310A (en) * 1990-12-14 1992-07-07 Colt's Manufacturing Company, Inc. Recoil spring assembly for a firearm
US5392689A (en) * 1994-02-25 1995-02-28 Smith & Wesson Corp. Recoil mechanism for handguns
US5437120A (en) * 1990-06-12 1995-08-01 Richard A. Voit Firearm having improved safety and accuracy features
US6192780B1 (en) * 1999-03-29 2001-02-27 Bryan S. Schneider Forward receiver buffer
US8453555B1 (en) 2011-01-10 2013-06-04 Kimber Ip, Llc Pistol having a barrel with synchronized cams
US9140505B2 (en) 2011-02-17 2015-09-22 Sarsilmaz Silah Sanayi A.S. Slide bearing component for pistol with light alloy body structure
US9377262B2 (en) 2014-11-18 2016-06-28 Smith & Wesson Corp. Barrel with cam followers
US10641562B2 (en) * 2018-06-22 2020-05-05 James Robert Patrick, IV Firearm with recoil mitigation
US11079190B2 (en) * 2016-10-24 2021-08-03 Daniel Defense, Llc Firearms recoil spring insert and recoil spring insert assembly

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057733A1 (de) * 1981-02-05 1982-08-18 Llama Gabilondo y Cia. S.A. Halbautomatische Feuerwaffe
DE4443940C2 (de) * 1994-12-09 1998-11-12 Heckler & Koch Gmbh Selbstladepistole
DE29612380U1 (de) 1996-07-23 1996-11-21 Sigg, Hans-Peter, 79798 Jestetten Selbstladepistole

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1563675A (en) * 1924-02-29 1925-12-01 Colt S Mfg Co Automatic pistol
US2487198A (en) * 1947-12-18 1949-11-08 Carl G Swebilius Gas-operated self-loading firearm
US3411404A (en) * 1966-12-29 1968-11-19 Pachmayr Gun Works Gun barrel locating structure
US3680433A (en) * 1969-10-07 1972-08-01 Ithaca Gun Co Inc Semi-automatic shotgun having rotary and sliding breech block

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1563675A (en) * 1924-02-29 1925-12-01 Colt S Mfg Co Automatic pistol
US2487198A (en) * 1947-12-18 1949-11-08 Carl G Swebilius Gas-operated self-loading firearm
US3411404A (en) * 1966-12-29 1968-11-19 Pachmayr Gun Works Gun barrel locating structure
US3680433A (en) * 1969-10-07 1972-08-01 Ithaca Gun Co Inc Semi-automatic shotgun having rotary and sliding breech block

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Materials In Design Engineering, Mid October, 1964, Vol. 60, No. 5, pp. 226 227 *

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754689A (en) * 1987-03-30 1988-07-05 Colt Industries Inc. Combination plastic spring guide and buffer for automatic pistol
EP0287785A2 (de) * 1987-03-30 1988-10-26 Colt Industries Inc Kombination von Kunststoffederführung und Rückstossbremse für automatische Pistolen
EP0287785A3 (de) * 1987-03-30 1989-03-22 Colt Industries Inc Kombination von Kunststoffederführung und Rückstossbremse für automatische Pistolen
US4974493A (en) * 1988-12-20 1990-12-04 Yeffman Paul L Shock absorbing buffer and recoil reducer
US4896581A (en) * 1988-12-30 1990-01-30 Richard Cole Accurizer
US5060555A (en) * 1990-03-30 1991-10-29 Smith & Wesson Corp. Slide decelerator for a firearm
US5437120A (en) * 1990-06-12 1995-08-01 Richard A. Voit Firearm having improved safety and accuracy features
US5076139A (en) * 1990-08-29 1991-12-31 Hiett Charles A Buffer for firearms
US5127310A (en) * 1990-12-14 1992-07-07 Colt's Manufacturing Company, Inc. Recoil spring assembly for a firearm
US5069110A (en) * 1991-04-09 1991-12-03 Menck Thomas W Impact buffering recoil mechanism
US5392689A (en) * 1994-02-25 1995-02-28 Smith & Wesson Corp. Recoil mechanism for handguns
US6192780B1 (en) * 1999-03-29 2001-02-27 Bryan S. Schneider Forward receiver buffer
US8621976B1 (en) * 2011-01-10 2014-01-07 Kimber Ip, Llc Pistol having a barrel with synchronized cams
US8453555B1 (en) 2011-01-10 2013-06-04 Kimber Ip, Llc Pistol having a barrel with synchronized cams
US8991293B1 (en) 2011-01-10 2015-03-31 Kimber Ip, Llc Pistol having a barrel with synchronized cams
US9140505B2 (en) 2011-02-17 2015-09-22 Sarsilmaz Silah Sanayi A.S. Slide bearing component for pistol with light alloy body structure
US9377262B2 (en) 2014-11-18 2016-06-28 Smith & Wesson Corp. Barrel with cam followers
US9470465B2 (en) * 2014-11-18 2016-10-18 Smith & Wesson Corp. Firearm having slide with cam
US11079190B2 (en) * 2016-10-24 2021-08-03 Daniel Defense, Llc Firearms recoil spring insert and recoil spring insert assembly
US10641562B2 (en) * 2018-06-22 2020-05-05 James Robert Patrick, IV Firearm with recoil mitigation

Also Published As

Publication number Publication date
BE789863A (fr) 1973-02-01
GB1368581A (en) 1974-10-02
DE2251861A1 (de) 1973-05-03
IT969938B (it) 1974-04-10
FR2158885A5 (de) 1973-06-15

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Legal Events

Date Code Title Description
AS Assignment

Owner name: COLT INDUSTRIES, INC., A CORP. OF PA

Free format text: MERGER;ASSIGNORS:COLT INDUSTRIES OPERATING CORP. A CORP. OF DE;CENTRAL MOLONEY INC., A CORP. OF DE;REEL/FRAME:004740/0482

Effective date: 19870706

AS Assignment

Owner name: CFPI INC., DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CII HOLDINGS INC., A CORP. OF DE;REEL/FRAME:005253/0543

Effective date: 19891116

AS Assignment

Owner name: CII HOLDINGS INC., DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:COLT INDUSTRIES INC., A CORP. OF PA.;REEL/FRAME:005240/0825

Effective date: 19891122

AS Assignment

Owner name: COLT LICENSING LIMITED PARTNERSHIP, 1100 NORTH MAR

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CFPI INC., A CORP. OF DE;REEL/FRAME:005261/0928

Effective date: 19900313

AS Assignment

Owner name: CREDITANSTALT-BANKVEREIN

Free format text: SECURITY INTEREST;ASSIGNOR:COLT S MANUFACTURING COMPANY, INC.;REEL/FRAME:005277/0057

Effective date: 19900322

AS Assignment

Owner name: CFPI INC., A CORP. OF DE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:COLT LICENSING LIMITED PARTNERSHIP, A L.P. OF DE;REEL/FRAME:005697/0032

Effective date: 19900313

Owner name: CII HOLDINGS INC., A CORP. OF DE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:COLT LICENSING LIMITED PARTNERSHIP, A L.P. OF DE;REEL/FRAME:005697/0032

Effective date: 19900313

AS Assignment

Owner name: COLT S MANUFACTURING COMPANY, INC., CONNECTICUT

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:CREDITANSTALT-BANKVERIN;REEL/FRAME:007169/0804

Effective date: 19940928