Improvements in Screw Propellers.
Номер патента: GB189901424A
Опубликовано: 25-11-1899
Автор(ы): Reuben Thomas Preston, William Hamilton Martin
Принадлежит: Individual
Опубликовано: 25-11-1899
Автор(ы): Reuben Thomas Preston, William Hamilton Martin
Принадлежит: Individual
Реферат: 1424. Preston, R. T., and Martin, W. H. Jan. 20. Screw propellers. -The blades are made hollowed in the manner shown. In the case of very large e propellers, the chamber may be subdivided.
Improvements in variable pitch screw propellers for aerial machines
Номер патента: GB190664A. Автор: . Владелец: Individual. Дата публикации: 1922-12-28.