This steam-powered clock , Gastown’s most famous (though nowhere near oldest) landmark, is one of the only functioning steam-powered clocks in the world. It was designed and built in 1977 (to marked the completion of the city’s revitalization project) by Canadian clockmaker Raymond L. Saunders to cover a steam grate, part of Vancouver‘s distributed steam heating system as a way to harness the steam and to prevent street people from sleeping on the spot in cold weather.
At the time, it was considered as either the first (the world’s first steam clock is often credited to British engineer John Inshaw, who supposedly built the clock to attract customers to his pub in Birmingham, UK during the mid-19th century) or second steam-powered clock ever built. Saunders has since built six different public steam clocks for clients such as the city of Otaru, Japan, and the Indiana State Museum. In 2010, he built a clock for Vancouver’s York House School‘s 78th birthday.
Originally, its design was faulty and, after a breakdown, had to be powered by electricity. As it had become a major tourist attraction, the steam mechanism was completely restored with the financial support ($58,000) of local businesses and private donors and, although it is of modern invention, is promoted as a heritage feature. The Gastown clock is not completely powered by steam as the steam engine that drives the clock mechanism is assisted by an electric motor. Weighing over two tons, the component parts the clock cost $42,000.
The steam used to power a miniature steam engine in the base of the clock is low pressure downtown-wide steam heating network (from the Central Heat Distributors plant adjacent to the Georgia Viaduct) which, in turn, drives a chain lift. The chain lift moves steel balls upward, where they are unloaded and roll to a descending chain. The weight of the balls on the descending chain drives a conventional pendulum clock escapement, geared to the hands on the four faces.
The gravity driven “falling ball” drive was ‘engineered’ by Douglas L. Smith. The steam also powers the clock’s sound production, with whistles being used instead of bells to produce the Westminster “chime” and to signal the time. It shoots steam at the top of every hour and announces quarter hours, sounding the chimes on 5 brass steam whistlers, with the Westminster Quarters; a common clock chime melody that’s also used by London’s “Big Ben.” In October 2014, the clock was temporarily removed for major repairs by its original builder, and was reinstalled January 2015.
Gastown Steam Clock: 305 Water St. cor. Cambie St., Gastown, Vancouver, British Columbia V6B 1B9.