Safety slitter for thermoplastic sheet
AssigneeBorg-Warner Corporation
InventorRoger Edsel Exline
Life of this patent
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Abstract
An automatically retractable slitter for cutting thermoplastic sheet as it exits from the sheet die of an extruder comprising a housing, a cutter blade mounted in a holder, a recess in the housing of a length greater than the length of the holder for slidably and retractably receiving the holder and blade, an elongated slot in said housing having detent means, an elongated pin secured to said holder and extending transversely through the elongated slot, spring means between the holder and the housing adapted to be relaxed when the holder is in its retractable position within the recess, the pin being adapted to rest in the detent when a cutting force is applied to the blade and to disengage from the detent when no force is applied to the blade.
Claims1
An improved, automatically retractable safety slitter for cutting thermoplastic sheet as it exits from the sheet die of an extruder comprising a housing, a cutter blade mounted in a holder, a recess in said housing of a length greater than the length of said holder for slidably and retractably receiving said holder, an elongated slot in said housing having detent means, an elongated pin secured to said holder and extending transversely through said elongated slot, tension spring means between said holder and said housing adapted to be relaxed when said holder is in its retractable position within said recess, said pin being adapted to rest in said detent when a cutting force is applied to said blade and to disengage from said detent when no force is applied to said blade.
Dependencies are inferred from the claim text.