Fabric cutting

Claim 2

A bias cutting apparatus for cutting rubberized fabric comprising a support frame, mounting means for pivoting said support frame about a central pivot point for swinging said support frame to predetermined positions, guideway means mounted on said support frame, carriage means mounted on said guideway means for movement thereon, a cutter support pivotally mounted on said carriage means for adjustment about a vertical axis, cutter means mounted on said cutter support for rotation thereon, said cutter means having a plurality of circumferentially spaced linear cutting edges, spring means operatively engaging said cutter means for biasing said cutter means toward said cutter support, motive means connected to said cutter means for rotating said cutter means on said cutter support, a guide plate mounted on said support frame in alignment with said guideway means, an anvil mounted on said guideway, means interconnecting said anvil and carriage for simultaneous movement in the same linear direction, adjustable stop means mounted on said carriage for limiting the pivotal movement of said cutter support about said vertical axis on said carriage means between a pair of limits, and drive means connected to said cutter support for selectively moving said cutter support and said carriage means on said guideway while pivoting said cutter support into abutting contact with one of said adjustable stop means

Claim 3

A bias cutting apparatus as set forth in claim 1 wherein said adjustable stop means comprises a pair of spaced brackets mounted on said carriage, each bracket supporting at least one set screw for limiting the pivotal movement of said cutter support toward said set screw.

Claim 4

A bias cutting apparatus for cutting elastomeric fabric comprising a support frame, guide means on said support frame providing a continuous closed endless loop, said guide means having a lower horizontal run and an upper return run, carriage means mounted for movement in a closed loop along said guide means, power operated means interconnecting said carriage means and guide means for moving said carriage means along said guide means, cutter support means mounted on said carriage means for movement therewith, cutter means journaled on said support member for rotation thereon, drive means operatively connected to said cutter means for rotating said cutter means, a guide plate secured to the lower portion of said support frame over which fabric is moved, an anvil moveable with said carriage and cooperative with said cutter means to perform a shearing action on fabric supported by said guide plate.

Claim 5

A bias cutting apparatus for cutting elastomeric fabric comprising a support frame, guide means on said support frame providing a continuous closed endless loop, said guide means having a lower horizontal run and an upper return run, carriage means mounted for movement in a closed loop along said guide means, power operated means interconnecting said carriage means and guide means for moving said carriage means along said guide means, cutter support means mounted on said carriage means for movement therewith, cutter means journaled on said support member for rotation thereon, drive means operatively connected to said cutter means for rotating said cutter means, a guide plate secured to the lower portion of said support frame over which fabric is moved, an anvil moveable with said carriage and cooperative with said cutter means to perform a shearing action on fabric supported by said guide plate.

Claim 6

A bias cutting apparatus for cutting elastomeric fabric comprising a support frame, guide means on said support frame providing a continuous closed endless loop, said guide means having a lower horizontal run and an upper return run, at least a pair of spaced carriage members mounted for movement in a closed loop along said guide means, power operated means interconnecting said carriage members and guide means for moving said carriage members along said guide means, a cutter support member mounted on each said carriage member for movement therewith, cutter means journaled on each of said cutter support members for rotation thereon, drive means operatively connected to said cutter means for rotating said cutter means, a guide plate secured to the lower portion of said support frame over which fabric is moved and under which a conveyor belt travels, an anvil means connected to each of said carriage members for movement therewith, each of said anvil means having a linear cutting edge, and each of said cutter means having a plurality of circumferentially spaced cutting edges that are cooperative with said anvil to perform a shearing action.

Claim 7

A bias cutting apparatus for cutting elastomeric fabric comprising a support frame, guide means on said support frame providing a continuous closed endless loop, said guide means having a lower horizontal run and an upper return run, at least a pair of spaced carriage members mounted for movement in a closed loop along said guide means, power operated means interconnecting said carriage members and guide means for moving said carriage members along said guide means, a cutter support member mounted on each said carriage member for movement therewith, cutter means journaled on each of said cutter support members for rotation thereon, drive means operatively connected to said cutter means for rotating said cutter means, a guide plate secured to the lower portion of said support frame over which fabric is moved and under which a conveyor belt travels, an anvil means connected to each of said carriage members for movement therewith, each of said anvil means having a linear cutting edge, and each of said cutter means having a plurality of circumferentially spaced cutting edges that are cooperative with said anvil to perform a shearing action.

Claim 8

A bias cutting apparatus as set forth in claim 4 wherein biasing means are connected to each of said cutter means to bias Said cutting edges into shearing contact with said linear cutting edge of said adjacent anvil as said cutting edges approach said adjacent linear cutting edge of said anvil.

Claim 9

A bias cutting apparatus for cutting elastomeric fabric comprising a support frame, guide means on said support frame providing a continuous closed endless loop, said guide means having an upper return portion and a lower cutting run portion, a pair of spaced carriages mounted for movement in a closed loop along said guide means journaled in said guide means and interconnecting said carriages, power operated means mounted on said support frame and connected to said interconnecting means for simultaneously moving said carriages in a closed loop, cutting means mounted on each of said carriages for movement therewith, each of said cutting means having a cutter journaled for rotation thereon, drive means mounted on each of said carriages for rotating said cutters respectively, a guide plate secured to the lower portion of said support frame over which fabric is moved and under which a conveyor belt travels, anvil means connected to each of said carriages and movable therewith, and each of said anvils guided by and cooperative with said adjacent cutter to perform a shearing action on fabric therebetween.

Claim 10

A bias cutting apparatus for cutting elastomeric fabric comprising a support frame, guide means on said support frame providing a continuous closed endless loop, said guide means having an upper return portion and a lower cutting run portion, a pair of spaced carriages mounted for movement in a closed loop along said guide means journaled in said guide means and interconnecting said carriages, power operated means mounted on said support frame and connected to said interconnecting means for simultaneously moving said carriages in a closed loop, cutting means mounted on each of said carriages for movement therewith, each of said cutting means having a cutter journaled for rotation thereon, drive means mounted on each of said carriages for rotating said cutters respectively, a guide plate secured to the lower portion of said support frame over which fabric is moved and under which a conveyor belt travels, anvil means connected to each of said carriages and movable therewith, and each of said anvils guided by and cooperative with said adjacent cutter to perform a shearing action on fabric therebetween.

Claim 11

A bias cutting apparatus as set forth in claim 6 wherein each of said cutters has a plurality of circumferentially spaced cutting edges that are cooperative with adjacent ones of said anvils to perform a shearing action on fabric therebetween, each of said carriages has a cutter support member pivotally mounted thereon, each of said cutter support members has said cutting means thereon, each of said cutter support members being adjustable on said carriage to adjust the shearing angle between cutting edges of said cutter with said anvil as the cutting edge of said cutter moves across said adjacent anvil.

Claim 12

A bias cutting apparatus for cutting rubberized fabric comprising a support frame, a carriage mounted on said support frame for movement thereon, power operated means connected to said carriage for moving said carriage on said support frame, a cutter means journaled on said carriage for rotation thereon, said cutter means having a plurality of circumferentially spaced cutting edges, drive means mounted on said carriage operatively connected to said cutter means for rotating said cutter means, a guide plate secured to the lower portion of said support frame over which fabric is moved, anvil means connected to said carriage for movement therewith, said anvil means guided for movement on said guide plate, said anvil means having a linear cutting edge, and means connected to said cutter means for presenting successive cutting edges of said cutter means in shearing contact with said linear cutting edge of said anvil means.

Claim 13

A bias cutting apparatus for cutting rubberized fabric comprising a support frame, a carriage mounted on said support frame for movement thereon, power operated means connected to said carriage for moving said carriage on said support frame, a cutter means journaled on said carriage for rotation thereon, said cutter means having a plurality of circumferentially spaced cutting edges, drive means mounted on said carriage operatively connected to said cutter means for rotating said cutter means, a guide plate secured to the lower portion of said support frame over which fabric is moved, anvil means connected to said carriage for movement therewith, said anvil means guided for movement on said guide plate, said anvil means having a linear cutting edge, and means connected to said cutter means for presenting successive cutting edges of said cutter means in shearing contact with said linear cutting edge of said anvil means.

Claim 14

A bias cutting apparatus as set forth in claim 8 wherein the contact between any of said cutting edges of said cutter means and said anvil defines an acute angle.

Claim 15

A bias cutting apparatus as set forth in claim 8 wherein a plane normal to the axis of rotation of said cutter means and passing through said cutter means makes an acute angle with a vertical plane passing through said linear cutting edge.

Claim 16

A bias cutting apparatus as set forth in claim 10 wherein said means connected to said cutter means to present said cutting edges of said cutter means into shearing contact with said linear cutting edge of said anvil means includes biasing means operative on said cutter means for biasing said cutter means toward said anvil means.

Claim 19

An apparatus for the cutting of elastomeric fabric material as set forth in claim 12 wherein said cutter support means is adjustable about a vertical axis to adjust the angle that said linear cutting edges of said cutter means makes with said linear cutting edge of said anvil in plan view.

Claim 20

An apparatus for the cutting of elastomeric material as set forth in claim 13 wherein power operated means is connected to said cutter support means for adjusting said acute angle in response to the direction of movement of said carriage.

Claim 21

An apparatus for cutting of elastomeric material as set forth in claim 13 wherein at least one of said linear cutting edges of said cutter means has a portion thereof in cooperative contact with said anvil at all times and makes an acute angle therewith in plan view.

Claim 24

An apparatus for the cutting of elastomeric fabric as set forth in claim 16 wherein said cutter support means is adjustable about a vertical axis to adjust the angle that said linear cutting edges of said cutter means makes with said linear cutting edge of said anvil in plan view.

Claim 25

An apparatus for the cutting of elastomeric fabric as set forth in claim 17 wherein said anvil means connected to said carriage means for movement therewith includes a plurality of pulleys and cables, and said cables being trained over said pulley interconnecting said carriage means with said anvil means for movement in the same linear direction as said carriage means.

Claim 26

A bias cutting apparatus for cutting rubberized fabric with wire strands therein comprising a support frame, a pair of spaced rollers mounted on said support frame, an endless conveyor belt trained over said rollers, said belt having an upper conveying run and a lower return run, said upper conveying run having a longitudinal center line lying in a vertical plane that is normal to the axis of rotation of said spaced rollers, said support frame having a pivot means for pivotal adjustment of said support frame, a guideway mounted on said support frame, a carriage member mounted on said guideway for reciprocal movement thereon, a guide bar mounted on said support frame for pivotal movement therewith, said guide bar having a leading edge and a trailing edge, said guide bar tapering from said tRailing edge of said leading edge, the lower surface of said guide bar being in contact with the upper conveying run of said belt, a cutter support member mounted on said carriage member for pivotal adjustment movement about an axis that is normal to the flat surface of said upper conveying run, means for reciprocating said cutter support member and said carriage member on said guideway, a shaft journaled in said cutter support member for rotation and limited axial linear movement in a direction normal to said axis of pivotal movement of said cutter support member, drive means connected to said shaft for rotating said shaft, one end of said shaft supporting cutter means, biasing means mounted on the other end of said shaft for biasing that portion of said cutter means adjacent to said trailing edge into contact with said trailing edge, a vertical plane containing said cutter means making an acute angle with a second plane that is vertical and passes through said trailing edge, said cutter means having a plurality of circumferentially spaced linear cutting edges, and said biasing means maintains contact with each of said linear cutting edges sequentially as said linear cutting edges of said cutter means approaches and comes into contact with said trailing edge of said guide bar.

Claim 27

A bias cutting apparatus for cutting rubberized fabric with wire strands therein comprising a support frame, a pair of spaced rollers mounted on said support frame, an endless conveyor belt trained over said rollers, said belt having an upper conveying run and a lower return run, said upper conveying run having a longitudinal center line lying in a vertical plane that is normal to the axis of rotation of said spaced rollers, said support frame having a pivot means for pivotal adjustment of said support frame, a guideway mounted on said support frame, a carriage member mounted on said guideway for reciprocal movement thereon, a guide bar mounted on said support frame for pivotal movement therewith, said guide bar having a leading edge and a trailing edge, said guide bar tapering from said tRailing edge of said leading edge, the lower surface of said guide bar being in contact with the upper conveying run of said belt, a cutter support member mounted on said carriage member for pivotal adjustment movement about an axis that is normal to the flat surface of said upper conveying run, means for reciprocating said cutter support member and said carriage member on said guideway, a shaft journaled in said cutter support member for rotation and limited axial linear movement in a direction normal to said axis of pivotal movement of said cutter support member, drive means connected to said shaft for rotating said shaft, one end of said shaft supporting cutter means, biasing means mounted on the other end of said shaft for biasing that portion of said cutter means adjacent to said trailing edge into contact with said trailing edge, a vertical plane containing said cutter means making an acute angle with a second plane that is vertical and passes through said trailing edge, said cutter means having a plurality of circumferentially spaced linear cutting edges, and said biasing means maintains contact with each of said linear cutting edges sequentially as said linear cutting edges of said cutter means approaches and comes into contact with said trailing edge of said guide bar.

Claim 28

A bias cutting apparatus as set forth in claim 19 wherein said guide bar includes a guideway, an anvil mounted in said guideway for reciprocal movement, said anvil having a shearing edge cooperating with said cutter means to provide a shearing action on the rubberized fabric, and connecting means interconnecting said anvil and said carriage for simultaneous reciprocal movement in the same linear direction.

Claim 29

A bias cutting apparatus as set forth in claim 20 wherein said cutter support member has means operatively con-nected thereto for changing the pivotal adjustment of said cutter support on said carriage about said pivotal axis in accordance with the direction of travel of said carriage.

Claim 30

A fabric cutting apparatus for cutting rubberized fabric having steel wire therein comprising a support frame, guideway means mounted on said support frame, carriage means mounted on said guideway means for movement thereon, a cutter support mounted on said carriage, cutter means mounted on said cutter support for rotation thereon and for movement therewith, spring means operatively engaging said cutter means for biasing said cutter means toward said cutter support, motive means connected to said cutter means for rotating said cutter means on said cutter support, a guide plate mounted on said support frame in alignment with said guideway means, anvil means mounted on said guide plate for movement thereon, means interconnecting said anvil means to said carriage for movement therewith, said anvil means having a linear cutting edge, said cutter means having a plurality of circumferentially spaced linear cutting edges, adjusting means interconnecting said cutter support and said carriage for adjusting said cutter support in a horizontal plane relative to said carriage to adjust the angular disposition of a plane passing through said linear cutting edges of said cutter means and a vertical plane that passes through said linear cutting edge of said anvil.

Claim 31

A fabric cutting apparatus for cutting rubberized fabric having steel wire therein comprising a support frame, guideway means mounted on said support frame, carriage means mounted on said guideway means for movement thereon, a cutter support mounted on said carriage, cutter means mounted on said cutter support for rotation thereon and for movement therewith, spring means operatively engaging said cutter means for biasing said cutter means toward said cutter support, motive means connected to said cutter means for rotating said cutter means on said cutter support, a guide plate mounted on said support frame in alignment with said guideway means, anvil means mounted on said guide plate for movement thereon, means interconnecting said anvil means to said carriage for movement therewith, said anvil means having a linear cutting edge, said cutter means having a plurality of circumferentially spaced linear cutting edges, adjusting means interconnecting said cutter support and said carriage for adjusting said cutter support in a horizontal plane relative to said carriage to adjust the angular disposition of a plane passing through said linear cutting edges of said cutter means and a vertical plane that passes through said linear cutting edge of said anvil.