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
Contact: R. Ballantyne
Address: 7450 Torbram Rd
Town/Prov: Mississauga, ON L4T 1G9
Phone: (905) 671-2200
Fax: (905) 671-0499
E-mail:
Website:
Industry Sector: Shipbuilding >5tonnes

 

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.

 



Type 3

Front view
Nozzles: 2x 2.5"
Model#: Unknown
Date: Not dated
V.O.: Unknown
Height: 35"
Barrel circumference: 23"

Type 3

Back view.

 

Type 3

Side view.

Type 3

Bonnet view
Cast on the top of bonnet:
Made By John T. Hepburn Limited Toronto.

6 bolt bonnet flange

 



Type 3

Front view
Nozzles: 2x 2.5", 1x blank pumper boss
Model#: Unknown
Date: Not dated
V.O.: Unknown
Height: 35"
Barrel circumference: 23"

Type 3

Back view.

The blank nozzle boss has the letters TWW stamped into it.

Type 3

Side view.

Type 3

Bonnet view
Cast on the top of bonnet:
Made By John T. Hepburn Limited Toronto Canada.

6 bolt bonnet flange

 



Type 3

Front view
Nozzles: 2x 2.5", 1x 100mm Storz pumper
Model#: Unknown
Date: Not dated
V.O.: Unknown
Height: 35"
Barrel circumference: 23"

Type 3

Back view.

The blank nozzle boss was removed, a thread was machined into the nozzle boss, and a 100mm Storz nozzle was installed. We do not know who made the Storz nozzle but it appears identical to the ones used on McAvity hydrants.

Type 3

Side view.

Type 3

Bonnet view
Cast on the top of bonnet:
Made By John T. Hepburn Limited Toronto.

6 bolt bonnet flange

 

Front view
Nozzles: 2x 2.5"
Model#: TYWW
Date: Not dated
V.O.: Unknown
Height: 35"
Barrel circumference: 23"
Back view.
The TYWW logo is only cast on the front of the hydrant. The back side is blank. There is no blank pumper nozzle boss either.
Side view

Bonnet view
Cast on the top of bonnet:
Made By John T. Hepburn Limited Toronto Canada.

6 bolt bonnet flange

 

Front view
Nozzles: 2x 2.5", 1x blank pumper boss
Model#: YTWW
Date: 1923
V.O.: Unknown
Height: 35"
Barrel circumference: 23"
Back view.
The YTWW logo is only cast on the front of the hydrant. The back side has the date of 1923 cast on it. The blank nozzle boss has the letters TWW stamped into it.
Side view

Bonnet view
Cast on the top of bonnet:
Made By John T. Hepburn Limited Toronto Canada.

6 bolt bonnet flange

 

Front view
Nozzles: 2x 2.5", 1x 3" pumper nozzle
Model#: YTWW
Date: Not dated
V.O.: Unknown
Height: 35"
Barrel circumference: 23"
Back view.
The YTWW logo is only cast on the front of the hydrant. The back side of the hydrant is blank..
Side view

Bonnet view
Cast on the top of bonnet:
Made By John T. Hepburn Limited

6 bolt bonnet flange

 



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