My grandfather is Charles Sykes, known also as Rilette, who designed the mascot Spirit of Ecstasy for Rolls-Royce in 1911, and manufactured the mascots in his studio up until 1939. Here are samples of his bronze sculpture and drawings. I have a site with full details and many more pictures: http://www.rilette.com
Saving school math 
These are awesome!!!
Wow! What a talented man! Thank you so much for treating us to these, and the detailed link. I’m fond of the proof works your grandfather made for the Tatler. A lot to be inspired by.