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2 843,598. ing from said gear, a rod extending from the my own I have hereto affixed my signature in free end of the arm, a revoluble wheel or disk, the presence of two witnesses. and a pair of spaced racks revoluble with the DAVID H. GREESON. wheel or disk and arranged to successively 5 engage the gear-segment and oscillate the Witnesses: same. B. WooDs, In testimony that I claim the foregoing as CECIL THOMAS.