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springs so that a radial displacement of said bars will produce a tension in the springs, V-shaped springs mounted between said rings having their outer extremities bearing 5 against said rollers, disks mounted upon the hub at each extremity thereof and ball bearings interposed between said disks and said rings.
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In testimony whereof we have signed our names to this specification in the presence of 10 two subscribing witnesses. ALFRED R. WYLIE. JAMES G. WRIGHT. Witnesses: J. S. MuuY, S. R. HICKMAN.
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