The gravity light project (Gravlight) formed the basis for my university degree finals and evolved during research & development between 1997 – 1999. Since then, I’ve received many offers to purchase and although I never did sell the project, it has now been copied by several companies & individuals. Enclosed are some of the original drawings, engineering sketches & exhibition photos. I offer enormous thanks to the University of Portsmouth for funding the project, especially Ed Harvey & Hans Bromwich and to Highbury College, Portsmouth for engineering design (help with a very special gearbox!) & to Tim Buckley, aviation engineering services.
From the original New Designers Exhibition, Islington, London, June – July 1999:
GravLight descends a `glide-rail' at very low speed. Light is generated by simply lifting the unit into position. The project objective is to obtain light for 1 hour, from a 1-metre descent! One of the principle issues behind GravLight, was to turn, what is perceived to be the negative effects of gravity, towards a positive and practical end. Weight becomes a source of light! The GravLight / FreeLight unit may be installed at angles between 45' and vertical. This enables a wide range of installation possibilities to be considered. The unit is held in position by a `pinching' effect, transmitted to a friction drive. An inertia switch allows the unit to be easily lifted upward, but in the event of being displaced on the glide-rail, will lock the unit into position, thus preventing damage.