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US 4,062,111 AGranted
Sharpener mounting structure and knife guard for circular knife type of cloth cutting machine
AssigneeEastman Machine Company
InventorFrederick G. Clark
Life of this patent
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AssigneeEastman Machine Company
InventorFrederick G. Clark
Estimating the term…
A guard and sharpener construction for a rotary cutting machine having a base, a circular knife mounted on the base, a motor for driving the circular knife, a standard for mounting the motor above the base, an elongated slotted rod slidable to cover a segment on the leading edge of the circular knife, a pair of sheet-like guard members mounted on the mounting arms for the sharpener wheels, the guard members covering opposite sides of the knife above the segment, a pivotal shaft and associated mechanism for mounting the arms for movement between a sharpening and a non-sharpening position, with the rod member, the sheet-like guards and the sharpener arms being so oriented relative to each other so as to permit the sharpener to be used in all positions of the rod-like guard member, and a keyway and set-screw indexing structure for mounting the arms on the pivotable shaft.
A guard construction for a rotary cutting machine having a base, a circular knife mounted on said base, motor means for driving said circular knife, and standard means for mounting said motor means above said base, comprising an elongated rod-like guard member, slot means in said rod-like guard member for receiving a segment on the periphery of said circular knife approximate said base, and mounting means for mounting said rod-like member on said base to permit movement of said guard member between a guarding position wherein said slot means receive said segment and an open position wherein said segment is exposed for cutting.
A knife sharpening construction for a circular knife of a cloth cutting machine comprising a sleeve, a sharpener shaft pivotally mounted in said sleeve, first and second arms on opposite sides of said sleeve, first and second ends on each of said first and second arms, first separate mounting means including indexing means fixedly mounting said first ends of said first and second arms on and in a predetermined orientation relative to said sharpener shaft, first and second substantially coaxial bearing means, second mounting means mounting said first and second bearing means on said second ends of said first and second arms, respectively, first and second sharpening wheel shafts mounted in said first and second bearing means, respectively, and first and second sharpening wheels on said first and second sharpening wheel shafts, respectively, said first end of said first arm being free and unobstructed to permit removal of said first arm from said sharpener shaft without affecting said fixed mounting of said second arm on said sharpener shaft, to thereby expose said first and second sharpener wheels, and sharpener wheel shafts for replacement or repair.
Dependencies are inferred from the claim text.