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US 2003/0154834 A1Published application
Automatic cutoff saw
OwnerLeRoy E. Cothrellinventor
Life of this patent
Estimating the term…
Abstract
An automatic cutoff saw includes a workpiece positioner comprising a plurality synchronized conveying belts driven by a single motor to position a workpiece for cutting by reciprocating, rotating saw blade.
Claims11
A workpiece positioner for a cutoff saw comprising:
- (a) a first conveying belt frictionally engaging a first portion of a first surface of a workpiece and arranged to convey said workpiece in a direction intersecting a cutting plane of said saw;
- (b) a second conveying belt in frictional contact with a second surface, opposing said first surface, of said workpiece, said second conveying belt arranged to convey said workpiece in said direction intersecting said cutting plane in conjunction with said first conveying belt;
- (c) a motor;
- and
- (d) a transmission transferring power from said motor to drive said first and said second conveying belts in substantial synchronicity.
2 more elements
A cutting mechanism for an automatic cutoff saw, said cutting mechanism comprising:
- (a) a saw blade arranged for powered rotation;
- (b) a saw arm supporting said saw blade and pivotally attached to said cutoff saw at a first end of said saw arm;
- (c) a crank including a shaft rotationally attached to said cut off saw and a crank arm;
- (d) a connecting rod having a first end pivotally attached to said crank arm and a second end pivotally attached to said saw arm at a location remote from said first end of said saw arm such that rotation of said crank causes said saw arm to pivot about said first end;
- and
- (e) a motor arranged to rotate said crank, said motor being controlled by a controller capable of controlling at least one of a speed and a position of said crank.
3 more elements
A cut off saw comprising:
- (a) a frame;
- (b) a first conveying belt frictionally engaging a first portion of a first surface of a workpiece and arranged to convey said workpiece in a direction intersecting a cutting plane of a saw blade;
- (c) a second conveying belt in frictional contact with a second surface, opposing said first surface, of said workpiece, said second conveying belt arranged to convey said workpiece in said direction intersecting said cutting plane in conjunction with said first conveying belt;
- (d) a workpiece positioner motor;
- (e) a transmission transferring power from said workpiece positioner motor to drive said first and said second conveying belts in substantial synchronicity;
- (f) a saw blade arranged for powered rotation;
- (g) a saw arm supporting said saw blade and attached to pivot relative to said frame at a first end;
- (h) a crank including a shaft rotationally attached to rotate relative said frame and a crank arm;
- (i) a connecting rod having a first end pivotally attached to said crank arm and a second end pivotally attached to said saw arm at a location remote from said first end so that rotation of said crank causes oscillatory pivoting of said saw arm about said first end;
- and
- (j) a saw reciprocating motor arranged to rotate said shaft of said crank.
8 more elements
Dependencies are inferred from the claim text.