Delay arming device for submarine laid mines

Claim 2

An arming device for a mine comprising a hydrostat, a first oil filled bellows movable by the hydrostat, a second oil filled bellows of less cross-sectional area than said first bellows, a means including baffle having a porous element interconnecting the interior of said first and second bellows to delay operation of the second bellows as the hydrostat operates, said second bellows movable at a faster rate and through a greater distance than said first bellows, a plunger actuatable by the second bellows from an initial position of rest to an armed position, and an explosive train arranged transversely within said plunger and movable from a safe position to an armed position as the plunger is moved to the armed position.

Claim 3

An arming device for a mine comprising a hydrostat, a first oil filled bellows, a resilient element interconnecting said hydrostat and oil filled bellows for applying pressure thereto as the hydrostat operates, a second oil filled bellows of less cross-sectional area than said first bellows, means including a baffle member having a porous element interconnecting said first and second bellows interiorly to delay operation of the second bellows as the hydrostat operates said second bellows movable at a faster rate and through a greater distance than said first bellows, a plunger carried by the second bellows, an explosive train enclosed transversely within said plunger and movable from an initial safe position to an armed position by the second bellows in predetermined time delay relation with respect to the operation of said hydrostat.

Claim 4

An arming device for a mine comprising a hydrostat, a first oil filled bellows, a resilient element interconnecting said hydrostat and oil filled bellows for applying pressure thereto as the hydrostat operates, a second oil filled bellows of less cross-sectional area than said first bellows, means including a baffle member having a porous element interconnecting said first and second bellows interiorly to delay operation of the second bellows as the hydrostat operates said second bellows movable at a faster rate and through a greater distance than said first bellows, a plunger carried by the second bellows, an explosive train enclosed transversely within said plunger and movable from an initial safe position to an armed position by the second bellows in predetermined time delay relation with respect to the operation of said hydrostat.

Claim 5

A device according to claim 2 including means for yieldably maintaining said plunger and explosive train in said initial safe position.

Claim 6

An arming device according to claim 2 including means for maintaining said hydrostat in an initial locked position until the device has been planted within the water.

Claim 7

A delay arming device for a mine comprising a hydrostat, a fluid motion amplifying element operatively connected to said hydrostat, said element comprising a driving expansible fluid container and a driven expansible fluid container of less cross-sectional area than the driving fluid container, means including a delay element comprising a porous plug interconnecting said containers interiorly for delaying the flow of fluid from the driving container to the driven container, means for yieldably connecting said driving container to the hydrostat for operation thereby, and an explosive train movable by the driven container from an initial safe position to an armed position as a predetermined quantity of fluid has flowed therein through said porous plug the degree of movement of said driven fluid container and explosive train each being greater than the degree of movement of said driving fluid container.

Claim 8

A delay arming device for a mine comprising a hydrostat, a fluid motion amplifying element operatively connected to said hydrostat, said element comprising a driving expansible fluid container and a driven expansible fluid container of less cross-sectional area than the driving fluid container, means including a delay element comprising a porous plug interconnecting said containers interiorly for delaying the flow of fluid from the driving container to the driven container, means for yieldably connecting said driving container to the hydrostat for operation thereby, and an explosive train movable by the driven container from an initial safe position to an armed position as a predetermined quantity of fluid has flowed therein through said porous plug the degree of movement of said driven fluid container and explosive train each being greater than the degree of movement of said driving fluid container.

Claim 9

A hydrostatically controlled delay arming device for a mine comprising a normally locked hydrostat, means for unlocking said hydrostat as the mine is planted, a first fluid filled bellows operatively connected to said hydrostat for actuation thereby as the hydrostat operates in response to the pressure of the surrounding water, a second fluid filled bellows of lesser cross-sectional area than the cross-sectional area of the first named bellows, means including a baffle member interconnecting said bellows and having an aperture therein in communication with the interior of each of the bellows for providing a fluid connection therebetween, a fluid porous element disposed within said aperture, a cup member connected to said second bellows and movable therewith and an arming member carried by said cup member and movable from an initial safe position to an armed position when a predetermined quantity of fluid has flowed through the porous element into the interior of the second bellows, the degree of movement of said second bellows being greater than the degree of movement of the first named bellows.

Claim 10

A hydrostatically controlled delay arming device for a mine comprising a normally locked hydrostat, means for unlocking said hydrostat as the mine is planted, a first fluid filled bellows operatively connected to said hydrostat for actuation thereby as the hydrostat operates in response to the pressure of the surrounding water, a second fluid filled bellows of lesser cross-sectional area than the cross-sectional area of the first named bellows, means including a baffle member interconnecting said bellows and having an aperture therein in communication with the interior of each of the bellows for providing a fluid connection therebetween, a fluid porous element disposed within said aperture, a cup member connected to said second bellows and movable therewith and an arming member carried by said cup member and movable from an initial safe position to an armed position when a predetermined quantity of fluid has flowed through the porous element into the interior of the second bellows, the degree of movement of said second bellows being greater than the degree of movement of the first named bellows.

Claim 11

An arming device for a mine comprising a hydrostat, a first oil filled bellows actuatable by the hydrostat, a second oil filled bellows of less cross-sectional area than said first bellows means including a baffle having a porous element interconnecting said first and second bellows interiorly to delay operation of the second bellows as the hydrostat operates said second bellows movable at a faster rate and through a greater distance than said first bellows, a plunger movable by the second bellows from an initial safe position to an armed position when a predetermined quantity of fluid has been transferred from the first bellows to the second bellows through said porous element, an explosive train carried by said plunger, and firing means comprising a detonator detachable secured to said arming device in such manner that the detonator is normally out of line with said explosive train when the second bellows is in an initial position of rest and the explosive train is moved into alignment with the detonator when the second bellows is moved to said armed position.

Claim 12

An arming device for a mine comprising a hydrostat, a first oil filled bellows actuatable by the hydrostat, a second oil filled bellows of less cross-sectional area than said first bellows means including a baffle having a porous element interconnecting said first and second bellows interiorly to delay operation of the second bellows as the hydrostat operates said second bellows movable at a faster rate and through a greater distance than said first bellows, a plunger movable by the second bellows from an initial safe position to an armed position when a predetermined quantity of fluid has been transferred from the first bellows to the second bellows through said porous element, an explosive train carried by said plunger, and firing means comprising a detonator detachable secured to said arming device in such manner that the detonator is normally out of line with said explosive train when the second bellows is in an initial position of rest and the explosive train is moved into alignment with the detonator when the second bellows is moved to said armed position.