Device for a screw-shaped movement of air entered into a firebox for burning a gas or dust-like fuel

A device for the message of a screw-shaped movement of the air entered into the furnace for burning gas or dust-like fuel: No. 27467. Declared.12/28/1911.Issues on 09/30/1914 / LLP "Babko and Vilkox".- [B.M .: B. and., 1914].-[2] p., 1 l.Il .. -Description of the device for the message of the screw-shaped movement of air, introduced into the firebox for burning gas or dust-shaped fuel.To the additional privilege of a foreign company Babko and Vilko, with limited liability "(BabCock & Wilcox, Limited), in the city of London, declared on December 28, 1911 (og. St. No. 50951).(The initial privilege was issued to the same company on July 31, 1914, for No. 27105).Class 24i.No. 27467. The privilege issued on September 30, 1914..I. LLP "Babcok and Vilkox" (London) .1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS