From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Register of patent numbers with their respective patentees and titles.
| Identifier | ExFiles\Box 147\1\ scan0126 | |
| Date | 25th February 1937 guessed | |
| No. Name of Patentee. Title. 460,824 Humboldt-Deutzmotoren A.G Improvements in or relating to Shaft Clutches Actuated by Liquid under pressure. 460,827 Carl Einar Johan Schou Torque Responsive Device in Automatic Change Speed Gear Mechanisms. 460,828 " " " Shifting Means for Automatic Change Speed Gears. 460,838. Adiel Yeaman Dodge Improvements in Hydraulic Torque Converters. 460,865 Aktiebolaget Milo Improvements in Rotary Compressors of the Worm or Worm Gear Type or Comprising Gear Wheels with Oblique Teeth. 460,921 Gustav Schwarz G.m.b.H Variable Pitch Propellers. 460,912 Junkers-Motorenbau G.m.b.H. Improvements in and relating to Screw Propellers for Driving Aircraft and Watercraft. | ||