Hi,
a well known designer,Mr. George A. Spratt,had created many early aircraft,a strange
very light biplane appeared in 1935,page 101;
https://books.google.com.eg/books?id=ozq8YqHLlagC&printsec=frontcover&hl=ar&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false
