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Restoration of a Treadwheel Crane

Institute of Carpenters Posted on 24/05/2022 by Denise17/06/2022

Funded by Historic England, the restoration project will see the foundations underpinned to stabilise the structure, timber repairs to the frame along with re-roofing and weatherboarding to protect the wheels inside. Contractors: Dolmen Conservation & Joinery. Lead Consultants & Design Engineers: The Morton Partnership. CDM Advisors: Philip Waller Consulting.

Built in 1667 on the site of the Naval Yard, now Navyard. It was moved to its present site on Harwich Green in about 1932.

The crane was worked by men walking in the interior of the wheels (as opposed to jail treadmills where the operators walked on the outer surface). Two wheels produce balanced action. Each wheel is 16ft (5.8 m) diameter, 3ft 10 ins (1.4 m) wide and made of oak. The wheels are spaced 4ft (1.5 m) apart on a common axle 13½ ins (34 cms) diameter. The jib has a projection of 17ft 10ins (6.5 m). It is described as a ‘House Crane’ in official records to distinguish it from the unenclosed type. Originally it had a boarded roof but pantiles were later substituted.

Get more information and see more photos of the project on the Harwich Society Website


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Institute of Carpenters
32 High Street
Wendover
Bucks HP22 6EA

T: 01296 625518
E: info@instituteofcarpenters.com

Institute of Carpenters
32 High Street
Wendover
Bucks HP22 6EA

T: 01296 625518
E: info@instituteofcarpenters.com

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