Inventor F. J. Camm demonstrates device that pumps tyres whilst cycling.
M/S of man cycling along road in front of park (Hyde Park). He stops his bicycle by the curb and feels his front tyre - it's soft. C/U of device attached to wheel. The invention allows deflated tyres to be pumped up as the cyclists cycles. More shots of man cycling.
Inventor and cyclist is Mr. F. J. Camm.