Web release device

Claim 2

In a web release device, a web connecting frame, a pair of spaced elements on the frame, a web holder pivoted on one of said spaced elements and extended to the other spaced element, releasable locking means on said holder to interlock the free end of said holder of the web holder with the other spaced element, and gas pressure actuated means in said releasable means to release said releasable means from said other spaced elements thereby to free the web for sliding off the freed web holder, said releasable locking means including, a member reciprocable in said holder, said other leg having a keeper engaged by said reciprocable member for locking said holder to said other leg, said reciprocable member having an elongated pocket along one side adjacent said holder, said pocket being closed at its ends, said gas pressure actuated means including, a stop in said pocket fixed in said holder between the ends of said pocket, whereby gas pressure bearing against said stop exerts reaction force on the end of said pocket nearest to the pivoted end of said holder so as to move said reciprocable member out of said keeper thereby releasing said holder, and means to introduce said gas pressure to act on said reciprocable member.

Claim 3

The web release specified in claim 1, and said means to introduce gas pressure including, a cartridge in said pocket, a charge in the closed end of the cartridge nearer to said hinged end, a reciprocating element in said cartridge bearing against said stop whereby said cartridge is forced away from said stop for moving said holder out of said keeper.

Claim 4

A web release device specified in claim 1, and a shear element fixed in said holder securing said reciprocable member in locked position in said holder in engagement with said keeper, said shear element being shearable by the shearing force produced by said gas pressure for moving said reciprocable member.

Claim 5

In a web release device, a web connecting frame, a pair of spaced elements on the frame, a web holder pivoted on one of said spaced elements and extended to the other spaced element, releasable locking means on said holder to interlock the free end of said holder of the web holder with the other spaced element, and gas pressure actuated means in said releasable means to release said releasable means from said other spaced elements thereby to free the web for sliding off the freed web holder, said web holder being tubular, said releasable locking means including, a bolt reciprocable in said tubular holder and a keeper in said other spaced element engageable by said bolt, said pressure gas actuated means including, an elongated pocket on one side in said bolt, a stop fixed in said holder extended across said pocket spaced from both ends of said pocket so that said bolt is slideable in said holder over said stop, a cartridge in said pocket bearing against the end of the pocket nearest to the pivoted end of said holder, a plunger slideable in said cartridge and bearing against said stop, and means to produce gas pressure in said cartridge for forcing said plunger against said stop and for exerting reaction force against said nearest end of said pocket, thereby to move said bolt into said tubular holder and out of said keeper.

Claim 6

In a web release device, a web connecting frame, a pair of spaced elements on the frame, a web holder pivoted on one of said spaced elements and extended to the other spaced element, releasable locking means on said holder to interlock the free end of said holder of the web holder with the other spaced element, and gas pressure actuated means in said releasable means to release said releasable means from said other spaced elements thereby to free the web for sliding off the freed web holder, said web holder being tubular, said releasable locking means including, a bolt reciprocable in said tubular holder and a keeper in said other spaced element engageable by said bolt, said pressure gas actuated means including, an elongated pocket on one side in said bolt, a stop fixed in said holder extended across said pocket spaced from both ends of said pocket so that said bolt is slideable in said holder over said stop, a cartridge in said pocket bearing against the end of the pocket nearest to the pivoted end of said holder, a plunger slideable in said cartridge and bearing against said stop, and means to produce gas pressure in said cartridge for forcing said plunger against said stop and for exerting reaction force against said nearest end of said pocket, thereby to move said bolt into said tubular holder and out of said keeper.

Claim 7

The web release device specified in claim 1, and a charge in said cartridge between said nearest pocket end and said plunger, means to ignite said charge to produce said gas pressure, a shear element for holding said bolt locked in said keeper, said shear element being sheared by the force exerted by said gas pressure in said cartridge.