An Apparatus for Recessing Rubber or the like by Means of Hand or Power Driven Cutting Tools
133,808. Phipps, W. H., and Hooper, W. T. Nov. 6, 1918. Rotary punching machines.- Apparatus for recessing rubber &c. to a given depth comprises a tubular cutter a, having adjustably secured thereon a depth setter f, and having located therein a spring lifted recessing-cutter c carrying a pin d...
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