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920,899
plate provided with lateral strap supports, with an orifice, and with outward project- ing ears, an axle rotatably mounted in the ears, a cam mounted upon the axle and pro- 5 jecting through the orifice, and a spring having one end secured to the top plate and its other end disposed upon the cam.
I11 testimony that. I (laiml the foregoing as my own, 1. have hereto affixed my signa- ture in the presence of two witnesses. ORCENITH F. ALLEN. W WSitTnPessesN: W. 1W. STLPIENS, G. F. FEiCK.