Method and a tool for cutting materials
OwnerCray L. Rossinventor
Life of this patent
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Abstract
A method of cutting desired pieces from a heat-severable material in which a tool is provided to cut a shape corresponding to one projection of the pieces in one direction and to cut a second projection of the desired pieces in a direction at right angles to said first cut, and a unitary tool to perform the method.
Claims6
A method of forming cavities in a block of packing material including the steps of providing at least one heated wire tool, a portion of which heated wire tool is formed as a closed generally planar loop portion defining a figure having an outline corresponding to the section of the cavity to be formed, and a portion formed as a support for said generally planar loop portion, pressing said planar loop portion into a block of packing material in the direction generally normal to the plane of said generally planar loop portion to the depth desired for said cavity to define the side walls of a first cavity, leaving waste material therein, moving said tool in a direction generally parallel to the plane of said generally planar loop portion a distance equal to the distance desired between said plurality of cavities to sever the waste material in said first cavity and to form the bottom surface of a second cavity, and withdrawing said tool from said block of packing material in a direction generally normal to the plane of said generally planar loop portion to form the side walls of the second cavity as the heated wire simultaneously severs the waste material within said second cavity from said block of heat severable material.
A method of forming in a block of material a cavity having two interconnected portions, a first portion being of less lateral and longitudinal extent than a second portion said method comprising the steps of providing a hot wire loop cutting tool lying in a generally horizontal plane and shaped to define the vertical projection of said first portion of the desired cavity, and a second hot wire cutting tool formed in a plane normal to the plane of said loop and shaped to define the horizontal projection of the said second portion of said cavity, inserting said tool into a block of material in a direction normal to the plane of said hot wire loop, then moving said tool in a direction parallel to the plane of said loop a distance corresponding to the length of said second portion of said cavity, then withdrawing said tool in the direction parallel to the direction of its insertion to form the side walls of said first portion of said cavity and to sever the waste material from the interior of said second portion of said cavity.
A method of cutting a solid configuration from a block of hot-wire-severable material comprising the steps of providing a hot wire tool having a hot wire arranged in a closed loop to define a first projection of the solid configuration to be cut, and a second hot wire arranged to define a second projection of the solid configuration to be cut at right angles to said first projection, inserting said hot wire tool into said block of material in the direction to cut the material and define the first projection of said configuration, then moving said tool within said material in the direction to cut the material and define the said second projection of the solid configuration to be cut.
A method of cutting heat severable material comprising the steps of providing a tool including a support, at least one wire extending from said support connected at each end to an electrical circuit to heat said wire, said wire including support portions extending from said support and a loop portion lying in a plane generally normal to said support portions, inserting said tool into a block of heat severable material in a direction generally normal to said loop portion to the depth defined by said support portions, moving said tool in a direction parallel to the plane of said loop portion a distance greater than the dimension of said loop portion in the direction of movement of said loop portion and withdrawing said tool in the direction generally normal to the plane of said loop portion.
Dependencies are inferred from the claim text.