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means upon the extension for gripping one of the wheel spokes to lock the plate in po- sition. 2. The combination with a vehicle wheel 5 having a radial opening extending through the hub and axle boxing thereof, of a plate fitted against the peripheral surface of the hub and formed with a bushing which pro- jects into the opening of the hub, a grease 10 cup fitted in the bushing, a cap threaded upon the grease cup, an integral extension projecting from one side of the plate and terminating in a spring arm which engages
the cap to prevent accidental rotation there- of, and a pair of complemental spoke clamp- 15 ing jaws projecting from the extension and adapted to grip one of the wheel spokes to lock the device in position. In testimony whereof I have signed my name to this specification in the presence of 20 two subscribing witnesses. FLAUZELLE ROBERTS. Witnesses: J. R. IIIs, I. H. ROBERTS.
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