11th October 1927, Page 54
11th October 1927
Page 54

Page 54, 11th October 1927
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A Free-wheel In The Transmission Line.
The Humfrey-Sandberg Change -speed Device Interposed Between Gearbox and Propeller Shaft. Restarting a Dormant Engine. a slipping device. We will, however, refer later to these......