In a 2007 interview, Ray Saunders described a selective coating inside Vancouver’s Gastown Steam Clock. He lacquered the movement’s parts to prevent rust, leaving the gear teeth uncoated. [1]

Saunders distinguished steam from damp air. Steam did not contact the timekeeping movement, he told the National Board Bulletin; cool, moist air circulating inside the clock could leave condensation on it. The movement had a pendulum and gears driving the hands. [1]

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Gastown Steam Clock, Vancouver. This map locates the town or region, not a verified exact historic event site.

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The same account described the winding apparatus as a small steam engine driving a chain with ring-shaped buckets. These lifted one-pound steel balls to an upper track, where they transferred to another chain. The descending weights drove the clock movement. Winding, keeping time and sounding the whistles were different jobs. [1]

Vancouver’s engineers had already put some of the less conspicuous work into writing. Their February 1999 report listed a heated, filtered air intake at the clock’s base among improvements scheduled over the preceding years. Replacing the winding transmission and preparing a maintenance manual were also on that list. The report was not a completion record for each item. [2]

A close view of two clock faces and the tall metal whistles above the Gastown Steam Clock, with white vapour against trees and buildings.
Clock faces and rooftop whistles in June 2022. “Vancouver (BC, Canada), Gastown Steam Clock -- 2022 -- 1836.jpg” — Dietmar Rabich / Wikimedia Commons, CC BY-SA 4.0.Photo: Dietmar Rabich · Source · CC BY-SA 4.0 · Resized, converted to sRGB and recompressed; no crop or retouching.

Its routine-maintenance allowance covered the exterior as well: cleaning once a month in winter and every two weeks in summer. Inside, it separately named the movement, winding devices and tune-playing machine. [2]