Natural Philosophy Collection

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  ABDNP200045a08.JPG - 19th Century Model Watt's Beam Engine This model was recovered from the back of the Natural Philosophy store 35 years ago in non-working condition and with signs of earlier repairs, particularly to the valves.  It was fully stripped, repaired and repainted with no pretence at achieving an original appearance.  It now works well under both steam and compressed air and will pump water when suitably set up.  We have kept original parts that were replaced, including the base. The London Science Museum dated the model to the first quarter of the 19th century but we have no corroborative documentation.  In 1789/90 Professor Patrick Copland of Marischal College built a model of Watt's beam engine for demonstration use from the patent description and at one time had correspondence with James Watt himself but Copland's model was a single stroke engine that was larger than this one.  Our model nicely illustrates Watt's parallel motion mechanism, an invention that Watt considered one of his very best. ABDNP:200045a  
 
 
 
 
 

22 | 19th Century Model Watt's Beam Engine

This model was recovered from the back of the Natural Philosophy store 35 years ago in non-working condition and with signs of earlier repairs, particularly to the valves. It was fully stripped, repaired and repainted with no pretence at achieving an original appearance. It now works well under both steam and compressed air and will pump water when suitably set up. We have kept original parts that were replaced, including the base.

The London Science Museum dated the model to the first quarter of the 19th century but we have no corroborative documentation. In 1789/90 Professor Patrick Copland of Marischal College built a model of Watt's beam engine for demonstration use from the patent description and at one time had correspondence with James Watt himself but Copland's model was a single stroke engine that was larger than this one. Our model nicely illustrates Watt's parallel motion mechanism, an invention that Watt considered one of his very best.

ABDNP:200045a

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