US3783738A - Recoil absorber - Google Patents

Recoil absorber Download PDF

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Publication number
US3783738A
US3783738A US00228523A US3783738DA US3783738A US 3783738 A US3783738 A US 3783738A US 00228523 A US00228523 A US 00228523A US 3783738D A US3783738D A US 3783738DA US 3783738 A US3783738 A US 3783738A
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US
United States
Prior art keywords
recoil
friction
support
during
sectors
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
US00228523A
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English (en)
Inventor
P Pelat
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.)
Vibrachoc SAS
VIBRATION ENG AND AVIONS DASSA
Original Assignee
VIBRATION ENG AND AVIONS DASSA
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Publication date
Application filed by VIBRATION ENG AND AVIONS DASSA filed Critical VIBRATION ENG AND AVIONS DASSA
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Publication of US3783738A publication Critical patent/US3783738A/en
Assigned to VIBRACHOC S.A. reassignment VIBRACHOC S.A. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: INTERNATIONAL VIBRATION ENGINEERING SARL
Anticipated expiration legal-status Critical
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
    • F41A25/16—Hybrid systems
    • 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
    • F41A25/06—Friction-operated systems

Definitions

  • This invention relates to a recoil mechanism for connecting a member subjected to an abrupt recoil to a support and for returning the member to its initial position after the recoil.
  • This device is particularly suitable for absorbing the recoil of repeating firearms, especially cannon mounted on airplanes.
  • the present invention proposes to provide a recoil absorber especially for repeating weapons such, for example, as cannon mounted on airplanes, which makes it possible, during the recoil, to transmit to the support a substantially constant force throughout the duration of the recoil movement.
  • This regularity of force has the effect, on the one hand, of subjecting the support to a substantially constant pressure, and, on the other hand, of limiting to the optimum extent, the instantaneous amplitude of the pressure against this support.
  • means may be provided to cooperate with the friction means in order to progressively diminish the frictional force during the recoil. This decrease in the frictional force compensates, preferably exactly, for the increase in force exerted on the support by the resilient member during the recoil.
  • the friction means comprises one or more friction surfaces held against the weapon under the influence of a wedging device adapted to urge said surface against the weapon during the recoil and to release said surface during return of the weapon to its initial position.
  • another resilient member is interposed between the movable weapon, on the one hand, and? the wedging device of the friction means, on the other hand, so that during the recoil a decreasing force corresponding to the regular expansion of this resilient member is transmitted to said wedging device causing a progressive release of the friction surface.
  • the second resilient member again expands and presses said wedging device against the support to resist in part the force exerted by the first elastic member, which returns the weapon to its initial position with respect to the support.
  • the progressive decrease in the frictional force transmitted to the support may compensate for the increase in the force resulting from the increase in the tension of the first resilient member, the resultant of these forces on the support then being substantially constant during the recoil.
  • an additional resilient member is inserted directly between the stationary support and the movable weapon to expand during the recoil, said friction means being positioned between the movable member and the support to transmit a constant frictional force to the support during the recoil.
  • the two resilient members work in opposite directions during both the recoil and the return to initial position and thus exert on the support a resultant force which is increased during the recoil by the constant frictional force of the friction member.
  • this additional resilient member which may be compressed when the movable weapon is in its rest position, is decomposed well before the end of the recoil movement. This additional resilient member then serves only to absorb the terminal movement and does not have any effect on the support during the greater part of the recoil and the return to initial position.
  • a third embodiment it is also possible, in a third embodiment, to mount another resilient member directly between the support and the movable weapon, as in the preceding embodiment, while regularly decreasing the frictional force during the recoil by suitable means, for example, by imparting a very slight conicity to the member which frictionally engages the friction means, or by interposing, as in the preferred embodiment of the invention, a resilient member between the wedge of the friction member and the movable member itself.
  • the resilient members are shaped to themselves produce a dissipation of energy during their displacement.
  • the wedging device may comprise, for example, a ring having a conical internal surface which narrows in the direction of recoil to form a wedge, cooperating with one or more complementary wedges in the form of sectors, for example, having an external conical convex surface and carrying on their concave inner surfaces friction members having a high coefficient of friction.
  • the ring is axially slidable with respect to the support so that the decreasing force applied to said ring by said additional resilient member during the expansion of the latter during recoil causes a decrease in the gripping force exerted by the sectors against the movable member, which permits a progressive decrease in the frictional force.
  • said ring in which resilient means are inserted directly between the stationary support and the movable weapon to expand during recoil, said ring may be permanently and firmly attached to the support or may be biased thereagainst by resilient means. Abutments are preferably provided on the stationary support to cooperate with corresponding surfaces on the sectors or movable wedges and transmit the force frictionally exerted against said sectors or wedges to said support.
  • FIG. 1 is a side view, partly in axial section, of a device according to the invention
  • FIG. 2 is an axial section on a larger scale, taken through the wedging device during the recoil movement;
  • FIG. 3 is a similar view of the same device shown during its return to initial position
  • FIG. 4 is a side view, partly in elevation, and partly in axial section, showing another device according to the invention.
  • FIG. 5 is an axial sectional view on an enlarged scale showing the wedging device according'to another embodiment of the invention.
  • a cannon not shown, is mounted in a member to which it is fixed and which consists of a slidable sleeve 1.
  • This sleeve is adapted to slide inside a tubular casing 2 fixed to a support consisting of the frame of the airplane on antifriction guides 3 and 4, the first of which is supported by a ring 5 fixed to the front end of the tubular casing 2.
  • This ring 5 serves as an abutment for a spring 6 consisting of biconical rings adapted to frictionally absorb part of the energy of the recoil during its compression.
  • This first spring 6 is compressed during the recoil of the sleeve 1 in the direction of the arrow F.
  • a ring 7 is positioned in engagement with the rear edge of the ring 5 and is adapted to slide along the internal surface of the tubular casing 2.
  • the internal surface of this ring 7 is conical to form a wedging surface, encircling an imaginary conical surface which narrows from front to back, that is to say in the direction of the arrow F.
  • this ring 7 are several conical sectors 8 which are freely mounted. said conical sectors 8 (one of which is shown on FIG.
  • linings 9 made of a material having a high coefficient of friction and highly resistant to wear.
  • These linings, which are positioned against the outer surface of the sleeve 1 constitute the frictional member.
  • the conicity of the ring 7 (and the sectors 8) may be of the order of 8 degrees, and the coefficient of friction (as a dynamic function) of the linings may be of the order of 0.3.
  • the axial path of travel of the wedge 8 in both directions is limited by a flange 10 on the ring 5 inserted in a corresponding but much longer neck in the conical sectors 8.
  • the spacing between the ends of the neck and the flange may be, for example, of the order of l mm for a cannon mounted on an airplane, with a recoil of 20 to 30 mm.
  • a small, weak, spring 11 bearing on the bottom of the ring 5 constantly biases the wedge 8 in the direction of recoil.
  • Another spring 12 formed, for example, of Belleville washers, bears against the rear surface of the conical ring 7 and against an abutment 13 fixed to the sleeve 1.
  • the first spring 6 is expanded whereas the other spring 12 is compressed and exerts pressure against the ring 7.
  • the second spring 12 progressively expands while also dissipating energy during its expansion. It follows that to the extent to which the spring 12 expands, the force exerted by this spring against the ring 7 decreases and consequently, the frictional force between the linings 9 and the sleeve 1 which is dependent on the wedging effects progressively decreases.
  • the spring 6 which has been compressed, returns the sleeve 1 forwardly in a direction opposite 0t that indicated by the arrow F. From the beginning of this movement, the frictional force exerted by the linings 9, if it still remains, is eliminated, since they are moved in an unwedging direction. Under these conditions, the spring 12 while being relatively decompressed, is still sufficiently compressed to drive the ring 7 and the sectors 8 in a direction opposite to the arrow F so that the ring 7 is brought very rapidly into abutment against the back of the stationary ring 5.
  • the frictional force is completely eliminated, and the spring 12 exerts, through the ring 7, a steadily increasing force in a direction opposite to the one indicated by the arrow F on the ring 5 attached to the support, which force partially resists the steadily decreasing force exerted on said ring 5 in the direction of the arrow F by the spring 6 as it decompresses.
  • the spring 12 thus serves to cushion the return movement of the sleeve 1.
  • this embodiment of the invention is distinguished from the embodiment illustrated in FIG. 1 by the fact that the spring 6 having biconical rings is replaced by a stack of cushions of knitted steel thread which have the advantage that, during their resilient compression, they absorb a substantial quantity of energy, thus making it possible to limit the amplitude of the recoil and the friction.
  • the second spring 12 may also be replaced by a stack of annular cushions of knitted steel thread.
  • this embodiment of the device according to the invention has a spring 15, consisting for example of cushions of knitted steel thread, which is compressed, in the rest position of the cannon, between a shoulder 16 on the slidable member 1 and an abutment 17 on the stationary cylindrical casing 2.
  • the wedge formed by the conical ring 7 is biased in a direction opposed to that of the arrow F by a resilient member 18 consisting simply of two Belleville washers, the last of which-bears against the front face of the stationary abutment member 17.
  • the spring may also be adapted to completely expand after an initial fraction of the recoil movement so that during the remainder of the recoil movement (and the corresponding part of the return movement) it has no effect on the stationary support.
  • a friction-producing device positioned between said member and said support and frictionally engaging said member in relative sliding relation during at least a part of said recoil to dissipate part of the energy imparted to said member during recoil, said friction-producing device bearing against said support during said at least a part of a recoil,
  • friction control means responsive to said recoil to reduce progressively the amount of friction produced during said recoil
  • said friction-producing device comprising means for removing friction during return of said member to its original position.
  • a device as claimed in claim 1 in which said friction-producing device comprises at least one wedgeshaped friction member, frictionally engaging said movable member and at least one complementary wedge, said friction control means comprising means for urging said complementary wedge against said wedge-shaped friction member.
  • the movable member comprises a sleeve slidable in said support and said friction-producing device comprises a ring having a conical inner surface cooperating with external conical surfaces of a plurality of sectors, said sectors being provided with friction linings in contact with said movable member.
  • Device as claimed in claim 4 which comprises an additional resilient member positioned between said ring and movable member, which additional resilient member expands during recoil to permit sliding of said ring to progressively decrease the frictional force produced, and means for transmitting to said support the frictional force applied to said sectors.
  • Device as claimed in claim 1 which comprises an absorbent cushion made of woven wire bearing against said support and against which said movable member is cushioned at the end of its return to its initial position.
  • said resilient member which returns the movable member to its initial position comprises a plurality of biconical cooperating washers.
  • a friction-producing device positioned between said member and said support and frictionally engaging said member in relative sliding relation during at least a part of said recoil to dissipate part of the energy imparted to said member during recoil
  • a friction control means to keep constant the amount of friction produced during the recoil
  • said friction-producing device comprising means for removing friction during return of said member to its original position.
  • a device as claimed in claim 11 in which said friction-producing device comprising at least one wedgeshaped friction member cooperating with at least one complementary wedge.
  • a device as claimed in claim 12 in which said movable member comprises a sleeve slidable in said support and said friction-producing device comprises a ring having a conical inner surface cooperating with external conical surfaces of a plurality of sectors, said sectors being provided with friction linings in contact with said movable member.
  • a device as claimed in claim 14 which comprises an additional resilient member positioned between said ring and said support, and in which said sectors have necks permitting displacement of said sectors on opposite sides of a shoulder of an abutment attached to said support, and wherein said sectors are constantly biased in the recoil direction toward said conical ring by a relatively weak resilient member bearing against said support.
  • a device as claimed in claim 11 which comprises an absorbent cushion of woven wire bearing against said support and against which said movable member is cushioned at the end of its return to its initial position.
  • a device as claimed in claim 11 in which said resilient member which returns said movable member to its initial position comprises a plurality of biconical cooperating washers.
  • a device as claimed in claim 11 in which said resilient member which returns said movable members to its initial position consists of a stack of resilient members made of woven metallic fibers.
  • a friction-producing device positioned between said member and said support comprising at least one wedge-shaped friction member provided with a neck means and a complementary wedge member, said wedge-shaped friction member being movable between a recoiled operative position wherein said neck means engage a shoulder means for transmitting friction forces, and an advanced inoperative position wherein said neck means are disengaged from said shoulder means, and a friction control means urging said complementary wedge member against said wedge-shaped member with a pressure which avoids any increase in the amount of friction produced during the recoil.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vibration Dampers (AREA)
US00228523A 1971-03-01 1972-02-23 Recoil absorber Expired - Lifetime US3783738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7106918A FR2127224A5 (enrdf_load_stackoverflow) 1971-03-01 1971-03-01

Publications (1)

Publication Number Publication Date
US3783738A true US3783738A (en) 1974-01-08

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ID=9072650

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Application Number Title Priority Date Filing Date
US00228523A Expired - Lifetime US3783738A (en) 1971-03-01 1972-02-23 Recoil absorber

Country Status (8)

Country Link
US (1) US3783738A (enrdf_load_stackoverflow)
JP (1) JPS5520159B1 (enrdf_load_stackoverflow)
BE (1) BE779944A (enrdf_load_stackoverflow)
CH (1) CH580796A5 (enrdf_load_stackoverflow)
DE (1) DE2208130C3 (enrdf_load_stackoverflow)
FR (1) FR2127224A5 (enrdf_load_stackoverflow)
GB (1) GB1386823A (enrdf_load_stackoverflow)
IL (1) IL38850A (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2508382A1 (de) * 1974-02-27 1975-10-02 Int Vibration Engineer Daempfungsvorrichtung fuer mit feuerstoessen schiessende waffen
FR2283417A1 (fr) * 1974-02-27 1976-03-26 Int Vibration Engineer Dispositif d'amortissement d'armes tirant en rafales
US3946969A (en) * 1974-07-30 1976-03-30 The United States Of America As Represented By The Secretary Of The Army Folding tail fins
US3972143A (en) * 1974-02-06 1976-08-03 J. G. Anschutz Gmbh Weapon for target competition
US4545322A (en) * 1982-11-23 1985-10-08 Pacific Scientific Company Constant drag device
DE3612098A1 (de) * 1985-05-03 1986-11-06 Werkzeugmaschinenfabrik Oerlikon-Bührle AG, Zürich Verschlusspuffer fuer eine automatische feuerwaffe
US5655632A (en) * 1992-11-06 1997-08-12 Etienne Lacroix Tous Artifices S.A. Damper device for a mechanical system
US6250198B1 (en) * 1999-08-11 2001-06-26 The United States Of America As Represented By The Secretary Of The Navy Shock absorbing mount for adjustable barrel
US6364074B2 (en) * 1998-02-02 2002-04-02 Etienne Lacroix Tous Artifices S.A. Mechanical device having two modes of displacement
US20110203454A1 (en) * 2010-02-24 2011-08-25 Vinghog As Recoil absorbing assembly for automatic weapons
US20160033239A1 (en) * 2014-08-04 2016-02-04 Harris Corporation Recoil absorbing mechanism
US20190316863A1 (en) * 2018-04-16 2019-10-17 Eagle Technology, Llc Lightweight recoil management
US10739097B1 (en) 2017-08-11 2020-08-11 Lance L. Gaines Thermal respirating sound suppressor

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2944859C2 (de) 1979-11-07 1983-10-13 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf Vor- und Rücklaufeinrichtung für eine Feuerwaffe
FR2478293A1 (fr) * 1980-03-12 1981-09-18 Vibrachoc Sa Amortisseur de recul, notamment pour armes a tir rapide
GB2094451B (en) * 1981-01-14 1984-08-30 Sarony Peter Philip Self-loading firearm
NO844589L (no) * 1984-11-16 1986-05-20 Kongsberg Vapenfab As Stativ for tyngre haandvaapen.
DE4203448A1 (de) * 1992-02-07 1993-08-12 Schaeffler Waelzlager Kg Riemenspannvorrichtung
FR2712052B1 (fr) * 1993-11-04 1996-01-26 Lacroix E Tous Artifices Dispositif d'amortissement à friction à effet contrôlé.
FR2774445B1 (fr) 1998-02-02 2000-05-19 Lacroix Soc E Systeme mecanique avec controle de deplacement relatif entre certains de ses elements, notamment pour une remise en batterie de ces elements
EP2360445B1 (en) * 2010-02-24 2013-08-21 Vinghög AS A recoil absorbing assembly for automatic weapons

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2539275A (en) * 1945-09-22 1951-01-23 Bofors Ab Forward damper device for firearms with a recoil mantle
US2869858A (en) * 1956-08-01 1959-01-20 Metal Textile Corp Vibration and shock absorptive cushion element
US2962935A (en) * 1956-12-21 1960-12-06 Mach Tool Works Oerlikon Recoil and buffer spring assembly for automatic fire arms
US3115063A (en) * 1961-06-27 1963-12-24 Browning Ind Inc Recoil absorbing mechanism for firearms
US3171326A (en) * 1962-03-29 1965-03-02 Charles H Baker Recoil friction brake for automatic firearms
US3390709A (en) * 1965-11-29 1968-07-02 Lord Corp Resilient mounting

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2539275A (en) * 1945-09-22 1951-01-23 Bofors Ab Forward damper device for firearms with a recoil mantle
US2869858A (en) * 1956-08-01 1959-01-20 Metal Textile Corp Vibration and shock absorptive cushion element
US2962935A (en) * 1956-12-21 1960-12-06 Mach Tool Works Oerlikon Recoil and buffer spring assembly for automatic fire arms
US3115063A (en) * 1961-06-27 1963-12-24 Browning Ind Inc Recoil absorbing mechanism for firearms
US3171326A (en) * 1962-03-29 1965-03-02 Charles H Baker Recoil friction brake for automatic firearms
US3390709A (en) * 1965-11-29 1968-07-02 Lord Corp Resilient mounting

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972143A (en) * 1974-02-06 1976-08-03 J. G. Anschutz Gmbh Weapon for target competition
FR2283417A1 (fr) * 1974-02-27 1976-03-26 Int Vibration Engineer Dispositif d'amortissement d'armes tirant en rafales
US4016799A (en) * 1974-02-27 1977-04-12 International Vibration Engineering Shock absorber for firearms and the like
DE2508382A1 (de) * 1974-02-27 1975-10-02 Int Vibration Engineer Daempfungsvorrichtung fuer mit feuerstoessen schiessende waffen
US3946969A (en) * 1974-07-30 1976-03-30 The United States Of America As Represented By The Secretary Of The Army Folding tail fins
US4545322A (en) * 1982-11-23 1985-10-08 Pacific Scientific Company Constant drag device
DE3612098A1 (de) * 1985-05-03 1986-11-06 Werkzeugmaschinenfabrik Oerlikon-Bührle AG, Zürich Verschlusspuffer fuer eine automatische feuerwaffe
US5655632A (en) * 1992-11-06 1997-08-12 Etienne Lacroix Tous Artifices S.A. Damper device for a mechanical system
US6364074B2 (en) * 1998-02-02 2002-04-02 Etienne Lacroix Tous Artifices S.A. Mechanical device having two modes of displacement
US6250198B1 (en) * 1999-08-11 2001-06-26 The United States Of America As Represented By The Secretary Of The Navy Shock absorbing mount for adjustable barrel
US20110203454A1 (en) * 2010-02-24 2011-08-25 Vinghog As Recoil absorbing assembly for automatic weapons
US8333141B2 (en) * 2010-02-24 2012-12-18 Vinghog As Recoil absorbing assembly for automatic weapons
US20160033239A1 (en) * 2014-08-04 2016-02-04 Harris Corporation Recoil absorbing mechanism
US9506728B2 (en) * 2014-08-04 2016-11-29 Harris Corporation Recoil absorbing mechanism
US10739097B1 (en) 2017-08-11 2020-08-11 Lance L. Gaines Thermal respirating sound suppressor
US20190316863A1 (en) * 2018-04-16 2019-10-17 Eagle Technology, Llc Lightweight recoil management
US10955212B2 (en) * 2018-04-16 2021-03-23 Eagle Technology, Llc Lightweight recoil management

Also Published As

Publication number Publication date
BE779944A (fr) 1972-08-28
FR2127224A5 (enrdf_load_stackoverflow) 1972-10-13
GB1386823A (en) 1975-03-12
DE2208130A1 (de) 1972-09-21
DE2208130C3 (de) 1979-04-12
CH580796A5 (enrdf_load_stackoverflow) 1976-10-15
DE2208130B2 (de) 1978-07-27
JPS5520159B1 (enrdf_load_stackoverflow) 1980-05-31
IL38850A0 (en) 1972-06-28
IL38850A (en) 1975-10-15

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Legal Events

Date Code Title Description
AS Assignment

Owner name: VIBRACHOC S.A., FRANCE

Free format text: MERGER;ASSIGNOR:INTERNATIONAL VIBRATION ENGINEERING SARL;REEL/FRAME:004247/0735

Effective date: 19830811

Owner name: VIBRACHOC S.A.

Free format text: MERGER;ASSIGNOR:INTERNATIONAL VIBRATION ENGINEERING SARL;REEL/FRAME:004247/0735

Effective date: 19830811