US1731863A - Automatic breech opening and closing mechanism for guns - Google Patents

Automatic breech opening and closing mechanism for guns Download PDF

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Publication number
US1731863A
US1731863A US335297A US33529729A US1731863A US 1731863 A US1731863 A US 1731863A US 335297 A US335297 A US 335297A US 33529729 A US33529729 A US 33529729A US 1731863 A US1731863 A US 1731863A
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US
United States
Prior art keywords
breech
arm
opening
during
lever
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
US335297A
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English (en)
Inventor
Methlin Nicolas Emilien
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.)
Schneider Electric SE
Original Assignee
Schneider et Cie
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 Schneider et Cie filed Critical Schneider et Cie
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Publication of US1731863A publication Critical patent/US1731863A/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
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • 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
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/32—Energy accumulator systems, i.e. systems for opening the breech-block by energy accumulated during barrel or gas piston recoil

Definitions

  • the object of the present invention is to provide an automatic breech opening and closing mechanism in which the movements for opening the breech, extracting and ejecting the spent cartridge cases, are completed before the return into battery position of the barrel is completed and in which the whole of the energy required for the movements for opening and closing the breech is drawn exclusively from the return to battery recuperator.
  • the new mechanism permits the use of curved guides in the form of grooves to be dispensed with completely; it is consequently more simple in construction and avoids the possible occurrence of accidents caused by the breech operating lever becoming wedged in the guide.
  • the abutment and guiding surfaces for the breech operating lever are formed upon a pivoting arm which only forms a guide groove during the movement of recoil and is adapted to be withdrawn in order to permit the automatic closure to take place under the action of a spring automatically stressed during the opening movement of the breech.
  • the pivoting arm is provided at its front end with a simple bearing and abutment surface which is connected to another simple bearing surface for maintaining the breech controlling lever in the open position; the pivoting of the arm permits the latter to move into a position corresponding to the position then occupied by the breech operating member, in which position it forms a guide during the recoil for the projection on the said operating lever.
  • the Withdrawal of the said arm permits to return into a position in which it forms a stop by its front edge lor the said projection.
  • the pivoting movement of the arm also permits its withdrawal for the descent of the operating lever from the position in which it bears upon the arm corresponding to the open breech into the position it will occupy at the end of the closure of the breech.
  • the pivoting arm forming abutment of bearing surfaces during the return to battery position may be pivotally connected to a shock absorbing buffer.
  • Fig. l is a longitudinal elevation with a part in section along the axis of the automatic breech closure device.
  • Figs. 2, 3 and 4 are corresponding plans of the parts showing the members in three different positions of operation.
  • Fig. 5 is a transverse elevation of a part; the section being taken along the line 55 in Fig 1.
  • Figs. 6 and 7 are cross-sectional elevations taken along the lines 66 and 7-7 in Figs. 1 and 2.
  • Fig. 8 is a longitudinal elevation with a part in section along the axis of the automatic breech closure device and showing the gun in battery with the breech open.
  • A is a gun barrel of any type in which the breech block B, in the example shown, is of the type having concentric threads the operating member for this breech block being formed by a lever C keyed upon ashaft c the geometric axis of which coincides with that of the threads.
  • the barrel is shown mounted upon a cradle D upon which'it recoils, which cradle is provided with trunnions (Z in the known manner, by means of which the said cradle is pivotally mounted on the gun carriage.
  • the breech opening and closing movements are obtained during the return to battery of the barrel, under the action of the encounter of the operating lever C with the special abutment and guiding member which forms the subject of the invention.
  • This member is formed by an arm E pivotally connected to the nonrecoiling part by a shaft which is vertical when the cradle is in the horizontal position.
  • This shaft instead of being mounted upon a fixed support is, in the particular embodiment of the invention described, mounted in a fork F formed at the end of a spring shock absorber or buffer adapted to make a slight movement of recoil in a cylinder F a spring F normally tends to maintain the fork E, which forms a bearing, in the position shown in the figures, that is to say slightly projecting upon the cylinder F
  • the pivoting arm E is arranged so as to form during the recoil a guide for a spring pin C, located in the handle of the breech lever C.
  • the arm may be of Lshape in cross section as shown in Figs.
  • the arm E terminates at its back end in a vertical bearing surface 6 which will form' a stop for the pin C, at the desired moment during the return to battery, and will then serve as a bearing surface during the commencement of the opening of the breech un-- til the moment when the spent cartridge case is loosened and ejected.
  • the pivoting movement of the arm in the direction away from the cradle is limited by an abutment beak 03,, carried by an arm D formed as a projection upon a cradle l).
  • the pivoting movement towards the cradle is limited by a spring buffer D the spring constantly tending to return the arm into the normal guiding and abutment position it occupies in Figs. 1 and 2.
  • the automatic closing device comprises a fixed part formed by a cylinder I-I secured to the barrel, in which cylinder moves a piston I, a spring J being interposed between the said piston and the rear end I-L, of the cylinder; the piston is pivotally connected by its rod and by means of a connecting-rod C to the breechlever C.
  • Thepivoting arm E is adapted, after the return to battery, the automatic opening of the breech and the loading of the gun, to be withdrawn into a position in which the spring pin C, no longer bears upon the upper flange c of the arm.
  • the pin will be returned into its normal position so that when the return to battery takes place it abuts against the bearing surface 6 WVhen the barrel returns to battery posi- -tion, the pin C encounters the bearing surface 6 the lever C is compelled to turn about its shaft thus causing the breech to open by its rotation in the barrel which continues its forward travel.
  • the pin C first of all slides from top to bottom along the bearing surface 6 making the lever pass from the position I into the position II. During this movement the breech begins to open.
  • cartridge case will be ejected while the breech block describes the required angle during its opening movement but at a fairly high speed, the lever travelling a very short distance during this time.
  • An automatic breech opening and closing mechanism for guns characterized by an abutment and guiding member for the operating lever (C) of the breech block, comprising a simple bearing and sliding surface (e for opening the breech, removing the cartridge-case and extracting the latter, said surface being connected to a simple bearing surface (6 for keeping the breech in the open position during the end of the movement of return to battery of the barrel, these two surfaces (6 6 being formed upon a pivoting arm (6) forming a guide for the lever during the movement of recoil and adapted to be withdrawn in order to permit the automatic closure under the action of a spring (J) stressed during the opening movement.
  • a simple bearing and sliding surface e for opening the breech, removing the cartridge-case and extracting the latter, said surface being connected to a simple bearing surface (6 for keeping the breech in the open position during the end of the movement of return to battery of the barrel, these two surfaces (6 6 being formed upon a pivoting arm (6) forming a guide for the lever during the movement of

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
US335297A 1928-02-17 1929-01-26 Automatic breech opening and closing mechanism for guns Expired - Lifetime US1731863A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR488241X 1928-02-17
FR359608X 1930-05-24

Publications (1)

Publication Number Publication Date
US1731863A true US1731863A (en) 1929-10-15

Family

ID=61556743

Family Applications (2)

Application Number Title Priority Date Filing Date
US335297A Expired - Lifetime US1731863A (en) 1928-02-17 1929-01-26 Automatic breech opening and closing mechanism for guns
US484396A Expired - Lifetime US1837980A (en) 1928-02-17 1930-09-25 Mechanism for automatically opening and closing the breech of guns

Family Applications After (1)

Application Number Title Priority Date Filing Date
US484396A Expired - Lifetime US1837980A (en) 1928-02-17 1930-09-25 Mechanism for automatically opening and closing the breech of guns

Country Status (5)

Country Link
US (2) US1731863A (de)
BE (2) BE354104A (de)
DE (2) DE488241C (de)
FR (2) FR663032A (de)
GB (2) GB306113A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019107405A1 (de) * 2019-03-22 2020-09-24 Rheinmetall Waffe Munition Gmbh Vorrichtung zum fernbedienbaren Anzünden von Munition

Also Published As

Publication number Publication date
GB306113A (en) 1929-06-27
FR39509E (fr) 1931-11-30
FR663032A (fr) 1929-08-14
GB359608A (en) 1931-10-29
US1837980A (en) 1931-12-22
BE371202A (fr) 1930-07-31
BE354104A (fr) 1928-10-31
DE488241C (de) 1929-12-28
DE530347C (de) 1931-07-28

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