The John T. Hepburn Limited Page
John T. Hepburn Limited, Toronto, Ontario
Hepburn Engineering Inc., Toronto, Ontario
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|Company closing circa 1995|
|Very little is known about John T. Hepburn Limited. We
do know that they were manufacturing the TWW hydrant as far back as
1915. We also know that in 1989, they were in the ship building industry
at that time. John T Hepburn Limited was a Canadian manufacturer of
mine hoisting systems and other industrial equipment that began business
in 1905. Like Canadian Ingersoll-Rand, they delivered both drum hoists
and friction hoists, mainly in North America but globally as well. The
largest friction hoist manufactured by John T Hepburn was for the Dennison
potash mine in New Brunswick Canada. This hoist, delivered around 1988,
was a 6 rope, 4.88m friction hoist with a direct coupled AC synchronous
motor with cycloconverter drive system. The motor and drive system were
manufactured in Germany by Siemens. This hoist was unique in that it
was one of the first mine hoists in North America supplied with a cycloconverter
drive system and AC motor.
John T Hepburn Limited had a foundry at 914 Dupont Street in Toronto in the 1920's. It was built to make castings for cranes and other machinery. They even made valves and frying pans. When WWII came the company made shell making equipment. We are unsure when they stopped manufacturing the TWW hydrant. It is interesting that the Hepburn TWW and the Bawden TWW are virtually identical except for the names cast on the bonnet. It is also interesting that the names are cast in the very same fashion. It appears that Hepburn and Bawden manufactured the TWW hydrant at the same time period but that is not proven. It appears through observation that the Hepburn's were made from around 1915 to mid 1920's and the Bawden's were made from around 1919 to mid 1940's.
John T Hepburn Limited is no longer in business but the mine hoist technology of the company was acquired by Hepburn Engineering Inc in 1994. Hepburn Engineering continues to supply friction and drum hoisting systems today in North America, South America with deliveries also to Indonesia.
This is the last known contact information for John T. Hepburn Limited:
Company: John T. Hepburn Limited
Barrel circumference measurements are taken around the barrel just above the chain lugs. The height measurements are taken from the top of the operating nut down to the ground line.