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AssigneeSeneca Sawmill Company, Inc.
InventorsRalph Wijesinghe, Edward Komori, Joseph LaChapelle, Mark L. Carter
Estimating the term…
A bandmill has first and second wheels and an endless saw blade trained about the wheels. The wheels are mounted to rotate about respective axes which lie in a common plane, but the first wheel is adjustable in position relative to the second wheel with respect to both its distance from the second wheel and its orientation relative to the second wheel. A tensioning mechanism is effective to force the first wheel away from the second wheel, while maintaining the axes of rotation of the two wheels substantially parallel, in response to a signal which is provided by a load cell and represents the tension in the saw blade. A wheel tilt mechanism is effective to adjust the angular position of the first wheel relative to the second wheel in response to a signal indicating the path followed by the saw blade, for maintaining the blade on a proper path.
A bandmill comprising a support frame, a first wheel, an arbor having two opposite ends and on which the first wheel is mounted for rotation about an axis thereof, two carriages in which the two opposite ends of the arbor are received respectively and which are movable relative to the support frame, a second wheel mounted in the support frame for rotation about an axis of the second wheel, an endless saw blade trained about the wheels, a differential lever assembly having first and second levers which are mounted pivotally to the support frame and engage the two carriages respectively, tensioning means for forcing the first wheel away from the second wheel so as to place the saw blade under tension, tension control means for measuring the tension in the blade and acting automatically upon the tensioning means to maintain the tension in the blade within a predetermined range, tilt means for adjusting the angular position of the axis of rotation of the first wheel relative to the axis of rotation of the second wheel, and tilt control means for sensing the path along which the blade passes and acting automatically upon the tilt means for maintaining the path of the blade within a predetermined range, and wherein the tensioning means and the tilt means comprise a first force member which is effective between the support frame and the first lever and a second force member which is effective between the second lever and the first lever.
A bandmill having first, second and third wheels, means supporting the wheels for rotating about respective axes, and endless saw blade trained about the wheels, tensioning means effective to force the first wheel away from the second wheel so as to place the saw blade under tension, tension control means for measuring the tension in the blade and acting upon the tensioning means to maintain the tension at a predetermined value, tilt means for adjusting the angular position of the axis of rotation of the first wheel relative to the axis of rotation of at least one other wheel, and tilt control means for sensing the path along which the blade passes and acting upon the tilt means for maintaining the blade on a predetermined path.
A bandmill comprising a support frame, a first wheel, an arbor having two opposite ends and on which the first wheel is mounted for rotation about an axis thereof, first and second arbor supports which the two opposite ends of the arbor are received respectively and which are movable relative to the support frame, a first link member effective on the first arbor support, a second link member effective on the second arbor support, a second wheel mounted in the support frame for rotation about an axis of the second wheel, an endless saw blade trained about the wheels, tensioning means effective to force the first wheel away from the second wheel so as to place the saw blade under tension, tension control means for measuring the tension in the blade and acting automatically upon the tensioning means to maintain the tension within a predetermined range, tilt means for adjusting the angular position of the axis of rotation of the first wheel relative to the axis of rotation of the second wheel, and tilt control means for sensing the path along which the blade passes and acting automatically upon the tilt means for maintaining the path of the blade within a predetermined range, and wherein the tensioning means comprise first force means effective between the support frame and the first link member and the tilt means comprise second force means effective between the first link member and the second link member.
A bandmill comprising a support frame, a first wheel, a first arbor having two opposite ends and on which the first wheel is mounted for rotation about an axis thereof, two carriages in which the two opposite ends of the first arbor are received respectively and which are movable relative to the support frame, a second wheel mounted in the support frame for rotation about an axis of the second wheel, an endless saw blade trained about the wheels, tensioning means effective to force the first wheel away from the second wheel so as to place the saw blade under tension, tension control means for measuring the tension in the blade and acting automatically upon the tensioning means to maintain the tension within a predetermined range, tilt means for adjusting the angular position of the axis of rotation of the first wheel relative to the axis of rotation of the second wheel, and tilt control means for sensing the path along which the blade passes and acting automatically upon the tilt means for maintaining the path of the blade within a predetermined range, and wherein the support frame comprises first and second frame members between which the first wheel and the second wheel are disposed and on which the two carriages are respectively mounted, the bandmill also comprising a second arbor on which the second wheel is mounted, the second arbor being supported by the first and second frame members at locations spaced apart along the second arbor.
A bandmill comprising a support frame, a first wheel, an arbor having two opposite ends and on which the first wheel is mounted for rotation about an axis thereof, two carriages in which the two opposite ends of the arbor are received respectively and which are movable relative to the support frame, a second wheel mounted in the support frame for rotation about an axis of the second wheel, an endless saw blade trained about the wheels, tensioning means effective to force the first wheel away from the second wheel so as to place the saw blade under tension, tension control means for measuring the tension in the blade and acting automatically upon the tensioning means to maintain the tension within a predetermined range, tilt means for adjusting the angular position of the axis of rotation of the first wheel relative to the axis of rotation of the second wheel, and tilt control means for sensing the path along which the blade passes and acting automatically upon the tilt means for maintaining the path of the blade within a predetermined range, and also comprising bearing means whereby the first wheel is supported for rotation about the arbor, and first and second spherical bearings whereby said two opposite ends of the arbor are supported by the carriages respectively.
A bandmill comprising a support frame, a first wheel, an arbor having two opposite ends and on which the first wheel is mounted for rotation about an axis thereof, two carriages in which the two opposite ends of the arbor are received respectively and which are movable relative to the support frame, a second wheel mounted in the support frame for rotation about an axis of the second wheel, an endless saw blade trained about the wheels, a differential lever assembly having first and second levers which are mounted pivotally to the support frame, the two levers engaging the two carriages respectively, tensioning means effective to force the first wheel away from the second wheel so as to place the saw blade under tension, tension control means for measuring the tension in the blade and acting automatically upon the tensioning means to maintain the tension within a predetermined range, tilt means for adjusting the angular position of the axis of rotation of one of the wheels relative to the axis of rotation of the other wheel, and tilt control means for sensing the path along which the blade passes and acting automatically upon the tilt means for maintaining the path of the blade within a predetermined range, and wherein the tensioning means and the tilt means comprise a first force member effective between the support frame and the first lever and a second force member effective between the second lever and the first lever.
Dependencies are inferred from the claim text.