Tuesday 4 March 2014

Pull Wire Pulleys

Only one of the Pull Wires is able to achieve a straight drop down through the Clock Room to the Ringing Room, that's the 3rd.  The other seven Pull Wires have to be diverted at some point between bell frame and Repeater Bell.  Various designs of pulleys have been utilised for the diversions depending if they are floor or ceiling mounted.  So far I've found some routes changed in the Belfry, on top of the lead flooring, some on the Clock Room ceiling others on the Clock Room floor.  I've taken some pictures of a couple taken from the 6th's route on the Clock Room ceiling.




 Both the pulleys have cast iron frames and sheaves, the one with the single screw has survived best of the two, the sheave still revolves.  The other had two screws fixing it to the ceiling, both screws had been the centre for corrosion so the cast frame is beyond repair.

The pulley pictured above will be stripped down and refurbished.  I don't think we'll use it for the new set up as we need to minimise the friction in the Pull Wire routes.  This is one of those decisions regarding accurate restoration of original installation or sympathetic improvement where we can to aid efficiency.

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