Cutting apparatus
OwnerGary A. Knudsoninventor
Life of this patent
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Abstract
A roll forming apparatus disclosed has a series of roll forming stations with a first group of stations having rollers that are adjustable to different width settings using the same rollers to form more than one width of ogee type gutter. A cutter uses interchangeable cutting blades and die plates for shearing different gutter sizes to selected lengths. The cutter uses a rotary drive member to move the blade in a path having a relatively short stroke that performs a scissor-like cutting action to successively cut the walls of the formed gutters for each revolution of the rotary drive member. A crank member for manually moving the cutter blade is collapsible and the crank handle is demountable for transport purposes.
Claims15
A cutter for cutting shaped members having a plurality of walls to a selected length, said cutter comprising:
- a cutting blade with a cutting edge disposed between a pair of die plates, each of said die plates having an opening through which the shaped member is passed, said blade being movable along a selected cutting path between retracted and extended positions, and
- drive means to move said cutting blade in a selected path, said drive means, including a rotary drive member with a drive pin mounted on said cutting blade a fixed distance from an axis of rotation of said rotary drive member, and guide means to position said blade in said selected path to dispose said cutting edge at a selected angle relative to each wall of a shaped member being cut and through each said wall to successively cut said walls in a shearing action, wherein said guide means includes a cam on said blade movable in slots in said die plates.
Dependencies are inferred from the claim text.