1972 Typhoo Tea : 100 Years of Great British Achievements

100 Years of Great British Achievements cards were distributed in 1972 by Typhoo Tea Ltd. of Birmingham, England. The 24-card series was issued in black-and-white box panels and large premium color cards. Each premium card measures approximately 4.5 x 9 inches (11.5 x 23 cm). The back of each card is blank.

"The problem of providing electricity in space is overcome in the Apollo flights by the provision of three fuel cells carried in the long cylindrical service module. All three cells weigh only 6 cwt and, since it would need a 10-ton conventional battery to provide equivalent electrical energy, their invention was of prime importance to space travel. The fuel cells used are developed by Pratt & Whitney (USA) from a patent owned by Energy Conversions Limited (UK) following over 30 years of research by British engineer, F T Bacon, OBE. Oxygen and hydrogen are brought together in controlled conditions in the presence of a catalyst. The resultant electrochemical reaction produces electricity and, as a by-product, water. With no rotating parts, no fumes, and an ability to work efficiently in all environments, fuel cells have a great future, not only in space, but in remote communications and oceanography."