Belt grinder
OwnerRobert L. Dozierinventor
Life of this patent
Estimating the term…
Abstract
A belt grinder includes a base plate mounting a drive motor, belt drive wheel, and belt tensioning idler wheel. A tension arm movably mounted on the base plate is biased to an extended position under a predetermined adjustable bias force to regulate belt tension. Air cylinder and weighted pivot arm embodiments for biasing the tension arm are disclosed. The idler wheel is pivotally mounted on the tension arm for adjusting position of the belt along the axis of the idler wheel. A plurality of grooves in the base plate allow precise securement of various attachments in repeatable alignments. A platen assembly attachment includes a tool rest and belt platen disposed between belt supporting rollers which may be quickly removed from the base plate and reattached in precise alignment without disturbing the adjustment of the tool rest and platen.
Claims20
A belt grinder, comprising:
- a base plate;
- a plurality of horizontally extending parallel grooves in said base plate including fasteners for securing one of a plurality of different attachments to said base plate in repeatable positions;
- a drive motor operably connected for driving a belt drive wheel supported on said base plate;
- a tension arm mounted by a vertically extending linear guide for reciprocal linear movement on said base plate;
- an idler wheel mounted for rotation on said tension arm;
- an endless loop belt mounted for rotation between said drive wheel and said idler wheel;
- and
- an air cylinder for exerting a predetermined adjustable bias force on said tension arm to regulate belt tension.
A belt grinder, comprising:
- a base plate;
- a plurality of grooves in said base plate disposed in spaced parallel relation to one another and including fasteners for securing one of a plurality of different attachments to said base plate in repeatable positions;
- a drive motor operably connected for driving a belt drive wheel supported on said base plate;
- a tension arm mounted for movement on said base plate;
- an idler wheel mounted for rotation on said tension arm;
- an endless loop belt mounted for rotation between said drive wheel and said idler wheel;
- and
- bias means for exerting a predetermined adjustable bias force on said tension arm to regulate belt tension.
A belt grinder, comprising:
- a base plate;
- a plurality of horizontally extending parallel grooves in said base plate including fasteners for securing one of a plurality of different attachments to said base plate in repeatable positions;
- said plurality of different attachments including a platen assembly including a tool rest, a belt platen, and at least one belt support roller, each mounted for independent adjustment relative to one another, said platen assembly including at least one support arm removably securable in one of said base plate grooves to provide for removal and reattachment of said platen assembly without disturbing the adjusted positions of said tool rest, belt platen, and said at least one belt support roller;
- a drive motor operably connected for driving a belt drive wheel supported on said base plate;
- a tension arm mounted by a vertically extending linear guide for reciprocal linear movement on said base plate;
- an idler wheel mounted for rotation on said tension arm;
- a pivot bar pivotally secured to said tension arm, said idler wheel mounted for rotation on said pivot bar, and a screw extending through a threaded aperture in said pivot bar and having an inner end abutting said tension arm and an outer end adapted for manual rotation for pivotally adjusting said pivot bar with respect to said tension arm;
- an endless loop belt mounted for rotation between said drive wheel and said idler wheel;
- and
- an air cylinder for exerting a predetermined adjustable bias force on said tension arm to regulate belt tension.
Dependencies are inferred from the claim text.