Patent ID: 6868766

Claim:
A knife holder for slitting web material comprising: a circular blade, a blade housing, said circular blade contained within said blade housing, a piston, a slotted fork, said slotted fork attached to said piston, a blade axle, said circular blade mounted on said blade axle, said blade axle supported within said slotted fork, a cylinder housing, said cylinder housing defining a fluid port and a pair of mounting lugs, said mounting lugs each defining a threaded lug channel, each of said threaded lug channels normal to said blade axle, said threaded lug channels terminating within said mounting lugs, a pair of spring retainers, said spring retainers positioned within said blade housing for guiding said mounting lugs therein, said spring retainers each defining a fastener channel, each of said fastener channels extending completely through said spring retainers for axial alignment with different ones of said threaded lug channels, each of said spring retainers engaging different ones of said mounting lugs, a pair of fasteners, each of said fasteners sliding through different ones of said fastener channels and engaging different ones of said threaded lug channels for securing said cylinder housing to said spring fasteners whereby said fasteners are accessible in said blade housing.