It is likely that this was part of a large stock order for H3 pumps and the intention was to record the early use of Tex-rope Vee-belt drives.
(Note that there are 10 belts/drive! Some 30 years later improvements in design and materials would reduce the number of belts by half for the same or greater power transmission).
These pumps were of the earlier narrow-centre type fitted with an internal one-piece manifold, for pumping hydraulic oil.
It is likely that these photos were taken in the centre bay of Hydraulic 2.
Note: – in the last photo the H3 pump castings stacked to the rear awaiting assembly!
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Click on the hyperlink to see other Notable Orders from the 1940s.
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