Claims
- 1. A circle cutting apparatus for cutting circles and metal plates comprising;
- a platform having a circular track means secured thereto, means for attaching the platform to the plate to be cut, track follower means comprising an arcuate member subtending greater than 180.degree. movably attachable to the track means and capable of being moved completely around said track means, a cutting apparatus secured to the track follower means and operably engaged with the plate to be cut, a drive means operably connected between the circular track means and the track follower means for moving said track follower means around the circular track means, the circular track means comprising an inwardly extending flange secured to the platform, and including three horizontally disposed bearing means having axis of rotation parallel to the axis of the circular track means, said bearing means being interposed between the track follower means and the circular track means and being radially spaced through an angle greater than 180.degree. to provide a three point suspension, centering means operably connected to the bearing means for radially adjusting the position of the bearing means for centering the track follower means with respect to the circular track means and including bearing positioning means operably connected to the bearing means for adjusting the position of said bearing means longitudinally with respect to its axis of rotation and wherein the centering means and bearing positioning means comprises a central bore through each bearing means axis of rotation, a recess for each bearing means provided in the track follower means for receiving said bearing means therein, a pair of aligned threaded bores on each side of the recess means, said threaded bores being larger than the bearing means bore and being positioned with respect to the edge of the track follower means such that when the track follower means is engaged with the circular track means, the mean distance between the axis of each of said threaded bores and the circular track means is substantially equal to the radius of the bearing means, a pair of oppositely disposed threaded screw members in each of said aligned bores, each pair of said screw members having inwardly directed tapered ends engageable with the bearing means bore for forcing said bearing means to center with respect to the screw members thereby forcing the outer edge of each bearing means outwardly against the circular track means and further being capable of adjusting the position of the bearing means longitudinally along its axis of rotation.
Parent Case Info
This is a continuation of application Ser. No. 576,012 filed May 8, 1975, now U.S. Ser. No. 4,021,025.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
737477 |
Radebaugh |
Aug 1903 |
|
2269505 |
Anderson |
Jan 1942 |
|
3417979 |
Cable et al. |
Dec 1968 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
576012 |
Aug 1975 |
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