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Castors
Patent Example
Shepherd Castors
Furniture Castor Patents
George Shepherd Autralian Patent 136548 lodged 10 September 1947
International success with a strong easily manoeuvrable, quiet, wobble-free
furniture castor.
The Shepherd castor is a domed inclined wheel incorporating an oil trap to
keep working parts permanently lubricated, the whole encased in a close fitting
dustproof cover. George Shepherd was an oil company engineer who wanted chairs
that could be moved with ease, even by someone who was sitting on them. World
War II slowed down development and it was not until 1946 that the first castors,
7.5cm models, went on the market. Improvements continued - Shepherd castors
now cope with light to heavy loads and are sold worldwide.
The full specification for the patent illustrated has 3 pages and 6 figures.
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