The “Flying Barrel” is the plane designed by William Pierce Gary and his Non-Capsizable Aeroplane Co.
It went through various evolution stages, from 1909 to 1913. With and without side winglets.
Apparently nicknamed “Hoople” because of its resemblance to a hoop.
It was destroyed when nosing over in a severe ground loop, as could be anticipated from such a design.
All Aero 