Grindlay Peerless cutaway drawing

I can't make out the signature of the artist who drew this cutaway of the first 500cc motorcycle to break 100 mph in Britain. The front wheel appears cocked oddly, once again the miracle of ellipse guides.
 In 1927, Bert Denly on a Norton had achieved 100 mph on French soil, and the publishers of The Motor Cycle offered a silver cup for the same feat in Britain. Bill Lacey did 103.3 miles in an hour on August 1 1928. 
 The remains of the motorcycle were much later found in a barn and the machine restored.