Pneumatic counter-recoil mechanism for guns

Claim 2

A pneumatic counterrecoil mechanism for guns, said guns having a gun barrel, and comprising a first and second counterrecoil cylinder operatively connected in parallel, means for securing said cylinders in said gun, said second cylinder operatively connected for partly effecting the counterrecoil of said barrel, said first cylinder including first means for feeding separately and storing a part of the energy required for the counterrecoil of said barrel, a first piston having a first piston rod and reciprocating in said first cylinder, said first cylinder defines a first pressure chamber receiving a gas filling, said piston with said first piston rod being manually displaceable and securable, such that said gas filling is compressed by displacement of said first piston, said first means comprises, means for applying a pressure medium on the front side of said first piston in said first cylinder, a conduit for feeding said pressure medium, and a control valve provided in said conduit and controlling the pressure of said pressure medium in relation to the pressure of said gas filling in said first pressure chamber in order to secure said first piston.

Claim 3

A pneumatic counterrecoil mechanism for guns, said guns having a gun barrel, and comprising a first and second counterrecoil cylinder operatively connected in parallel, means for securing said cylinders in said gun, said second cylinder operatively connected for partly effecting the counterrecoil of said barrel, said first cylinder including first means for feeding separately and storing a part of the energy required for the counterrecoil of said barrel, a first piston having a first piston rod and reciprocating in said first cylinder, said first cylinder defines a first pressure chamber receiving a gas filling, said piston with said first piston rod being manually displaceable and securable, such that said gas filling is compressed by displacement of said first piston, said barrel includes a driver, said first piston rod of said first cylinder is adjustably guided and has at its rear end means for abutting said driver, a reciprocating second piston having a second piston rod disposed in said second cylinder, the latter defining a second pressure chamber receiving a gas filling, and means for automatically releasing said first piston upon complete minimum return stroke of said barrel, so that the pressure energy of said gas filling in said first and second pressure chambers is freed for a counterrecoil of said barrel.

Claim 4

A pneumatic counterrecoil mechanism for guns, said guns having a gun barrel, and comprising a first and second counterrecoil cylinder operatively connected in parallel, means for securing said cylinders in said gun, said second cylinder operatively connected for partly effecting the counterrecoil of said barrel, said first cylinder including first means for feeding separately and storing a part of the energy required for the counterrecoil of said barrel, a first piston having a first piston rod and reciprocating in said first cylinder, said first cylinder defines a first pressure chamber receiving a gas filling, said piston with said first piston rod being manually displaceable and securable, such that said gas filling is compressed by displacement of said first piston, said barrel includes a driver, said first piston rod of said first cylinder is adjustably guided and has at its rear end means for abutting said driver, a reciprocating second piston having a second piston rod disposed in said second cylinder, the latter defining a second pressure chamber receiving a gas filling, and means for automatically releasing said first piston upon complete minimum return stroke of said barrel, so that the pressure energy of said gas filling in said first and second pressure chambers is freed for a counterrecoil of said barrel.

Claim 5

A pneumatic counterrecoil mechanism for guns, said guns having a gun barrel, and comprising a first and second counterrecoil cylinder operatively connected in parallel, means for securing said cylinders in said gun, said second cylinder operatively connected for partly effecting the counterrecoil of said barrel, said first cylinder including first means for feeding separately and storing a part of the energy required for the counterrecoil of said barrel, a first and second piston displaceably mounted in said first and second cylinders, respectively, said second piston having a second piston rod operatively rigidly secured to said barrel and displaceable therewith, said first piston having a first piston rod being displaceably relative to said barrel, said first and second cylinders defining a first and second pressure chamber, respectively, receiving a gas which is adapted to be compressed for storing the energy required for the counterrecoil of said barrel, said first means for selectively displacing said first piston rod in said first cylinder, from a first relatiVe position of said first piston rod and said barrel, rearwardly relative to said barrel for a minimum recoil distance, whereby when firing said gun with small charges said first piston is inoperative with respect to said barrel as the latter subsequently recoils upon firing, and including second means for securing said first piston thereat, thereby compressing said gas in said first pressure chamber, whereby said part of the energy required for said counterrecoil of said barrel is stored, third means for releasing the securing of said first piston when said barrel is subsequently recoiled rearwardly by a distance equal to said minimum recoil distance, whereby said first piston rod and said barrel become again in said first relative position but in a rearward recoil position, said first piston rod operatively connected with said barrel for joint counterrecoil movement of said barrel and said first piston rod when said third means releases the securing of said first piston, whereby both said first piston and said second piston transmit the energy for, and effect, the counterrecoil of said barrel, and said barrel operatively is connected with said first piston rod for rearwardly moving the latter upon recoil of said barrel only when said barrel and said first piston rod are in said first relative position with respect to each other, said barrel being operatively connected with said first piston rod for counterrecoil movement of said barrel by said first piston rod when the latter and said barrel are in said first relative position in the rearward recoil position, whereby with normal gun charges both cylinders are partly effective for storing the recoil energy of said barrel and effecting said counterrecoil of said barrel by means of both piston rods jointly being connected with said barrel during recoil, as well as counterrecoil, of said barrel.

Claim 6

A pneumatic counterrecoil mechanism for guns, said guns having a gun barrel, and comprising a first and second counterrecoil cylinder operatively connected in parallel, means for securing said cylinders in said gun, said second cylinder operatively connected for partly effecting the counterrecoil of said barrel, said first cylinder including first means for feeding separately and storing a part of the energy required for the counterrecoil of said barrel, a first and second piston displaceably mounted in said first and second cylinders, respectively, said second piston having a second piston rod operatively rigidly secured to said barrel and displaceable therewith, said first piston having a first piston rod being displaceably relative to said barrel, said first and second cylinders defining a first and second pressure chamber, respectively, receiving a gas which is adapted to be compressed for storing the energy required for the counterrecoil of said barrel, said first means for selectively displacing said first piston rod in said first cylinder, from a first relatiVe position of said first piston rod and said barrel, rearwardly relative to said barrel for a minimum recoil distance, whereby when firing said gun with small charges said first piston is inoperative with respect to said barrel as the latter subsequently recoils upon firing, and including second means for securing said first piston thereat, thereby compressing said gas in said first pressure chamber, whereby said part of the energy required for said counterrecoil of said barrel is stored, third means for releasing the securing of said first piston when said barrel is subsequently recoiled rearwardly by a distance equal to said minimum recoil distance, whereby said first piston rod and said barrel become again in said first relative position but in a rearward recoil position, said first piston rod operatively connected with said barrel for joint counterrecoil movement of said barrel and said first piston rod when said third means releases the securing of said first piston, whereby both said first piston and said second piston transmit the energy for, and effect, the counterrecoil of said barrel, and said barrel operatively is connected with said first piston rod for rearwardly moving the latter upon recoil of said barrel only when said barrel and said first piston rod are in said first relative position with respect to each other, said barrel being operatively connected with said first piston rod for counterrecoil movement of said barrel by said first piston rod when the latter and said barrel are in said first relative position in the rearward recoil position, whereby with normal gun charges both cylinders are partly effective for storing the recoil energy of said barrel and effecting said counterrecoil of said barrel by means of both piston rods jointly being connected with said barrel during recoil, as well as counterrecoil, of said barrel.