Shaft safety valve system

1. An improved shaft safety pneumatic valve system in combination with a pneumatic expanding core shaft having a hollow, cylindrical bearing tube with an air bladder contained within, said air bladder having a cylindrical pneumatic inflation valve joined in operative engagement with an air bladder interior, said pneumatic inflation valve adapted to insert or release air into the air bladder, said pneumatic inflation valve being accessed through a pneumatic inflation valve aperture formed in the bearing tube, said air bladder having an exterior surface driving one or more lugs loosely held and protruding through corresponding lug apertures in the bearing tube, said lugs adapted to engage a roll of wound web material on and about said bearing tube, wherein said cylindrical pneumatic inflation valve has a top threaded section and a bottom threaded section separated at an approximate midpoint by a nut, said bottom section adapted to being inserted into the air bladder, said pneumatic inflation valve having an interior valve whose manipulation moves air into and out of the air bladder, comprising:

a disk threadingly engaging the pneumatic inflation valve top threaded section, said disk having a flat bottom, a top and side wall, said disk having a central threaded aperture extending through the disk top and bottom, said disk central threaded aperture corresponding in diameter to the pneumatic inflation valve top threaded section for threading engagement, said disk top having a nut protrusion formed therein with a central annular threaded channel formed therein, said disk having an external diameter less than a diameter of the bearing tube inflation valve aperture diameter; and

an adapter fitted onto an air gun and adapted to engage the pneumatic inflation valve through the disk central threaded aperture and nut protrusion central annular threaded channel, said adapter having a hollow cylindrical sleeve with an open bottom and an open top, and a side wall interconnecting said bottom and top, said top, bottom and side wall defining a sleeve interior, said side wall divided into a top section and a bottom section, said bottom section having a diameter less than the top section, said sleeve interior divided into a lower interior annular opening and an upper interior annular opening, said upper interior annular opening having a diameter greater than the diameter of the lower interior annular opening, said sleeve lower interior annular opening having an annular channel formed therein, said annular channel adapted to hold a O-ring, the said sleeve bottom section having a diameter corresponding to the diameter of the disk nut protrusion central threaded channel.

2. An improved shaft safety pneumatic valve system as recited in claim 1 , wherein:

the adapter is further comprised of a cylindrical valve body having a top, a bottom and a cylindrical side wall connecting said valve body top and valve body bottom, said top, bottom and side wall defining a valve body interior, said valve body side wall having an annular protrusion, said annular protrusion adapted to slide within the sleeve upper interior annular opening, said valve body encased in a compression spring within the sleeve interior upper annular section beneath the valve body annular protrusion,

wherein a spring pin is inserted through the sleeve side wall top section into the upper interior annular opening above the valve body annular protrusion; wherein the sleeve bottom section engages the disk nut protrusion central annular threaded channel and the valve body bottom engages the threaded air valve interior valve.

3. An improved shaft safety pneumatic valve system as recited in claim 2 , wherein:

the disk top nut protrusion has a hexagonal shape providing means for wrench engagement during an installation.