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(CANADIAN TRADE CATALOGUE). Improving Transmission. Ramsey Silent Chain Drives. No. 628.
Albany, NY: Ramsey Chain Company, (1929). With the cover reading ‘Catalog No. 628 Hamilton Gear & Machine Co., Toronto, Ontario' and p.3 stating that ‘In Canada --The Hamilton-Ramsey Chain Made by Hamilton Gear & Machine CO., Toronto, Ontario.' Tall 8vo., orig. brown wrappers, 87, (5)pp. blank for ‘Memoranda'. With illustrations. Slight trace of wear at the spine ends but in fact a fine copy. No copies in Voila.
Founded in 1911 and located at 95 Dupont St. in Toronto, the Hamilton Gear & Machine Company produced mechanisms for many important projects. For example, they produced actuators that opened and closed the locks on the St. Lawrence Seaway; the pilot's canopy of the Avro Arrow; and the sliding roof of the Rogers Centre (originally known as the SkyDome). They ceased operations in 1994. The also served as the manufacturer of Ramsey silent chain drives, which began with the Ramsey Chain Co. in Albany in 1923.