Rifting wheel cutting machine with a screw mill

A car for cutting gears with a screw cutter: No. 27840. Declared.03/23/1913.Issue 05/26/1915 / h.A.Parsons.- [B.m .: B. and., 1915].-3 p., 1 l.Il .. -Description of a car for cutting gear wheels with a screw mill.To the privilege of the British citizen Ch.A.Parsons (Ca Parsons), in the city of New Cestle on a secret, in England, declared on March 23, 1913 (okhr. St. No. 57217).Class 49a.No. 27840. The privilege issued on May 26, 1915.Ex.: With a handle.litter..I. Parsons, h.a..1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS