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1891 Crankshaft

1891 Crankshaft

Another one from the Harvey & Co of Hayle album.
I would be interested to know what the other fabrications are in the photograph.

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In addition to triple expansion crankshaft there looks to be the cylinder casting for the same engine. From larger to smaller diameters being HP, IP, and LP. The shaft in foreground looks like a section of the propeller shaft incorporating multi-collar thrust arrangement. This was an early method of absorbing propeller and engine thrust and was superceded by the Michell single collar thrust block which a has tilting white metal clad pads supporting an oil film. A design still in use today.
 

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Seeing the cranks bolted to the shaft looks very primative by todays standards where they would be a shrink fit ; if not a single forging . Derek
 

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Thanks for filling in the information.
It was an amazing age of innovation and engineering.
 

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Behind the screen are the column's to mount the cylinder casting upon.
 

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good day treeve,sm.sun 21fst jan,07.re:1891 crankshaft.they were great eng's by any standard,and had a lot less tec help.they set the standard for the future,excellent photo,regards ben27
 

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treeve
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