An exhibition class model of an Easton and Anderson single cylinder expansion valve gear condensing grasshopper beam pumping engine, circa 1885,

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Lot 31
An exhibition class model of an Easton and Anderson single cylinder expansion valve gear condensing grasshopper beam pumping engine,
circa 1885,

Sold for £ 6,875 (US$ 8,913) inc. premium
An exhibition class model of an Easton and Anderson single cylinder expansion valve gear condensing grasshopper beam pumping engine, circa 1885,
with brass bound mahogany lagged cylinder with integrally cast steam passage and valve chest body with sloping valve cast cover and main stop valve, valves driven through coaxial weightshafts with twin rockers and eccentrics. Cylinder standing on a cast pedestal and the piston tail-rod projects through the casting for direct connection to the water pump below, the double beam with anchor links working on H-section cylinder mounted A-frames. Barrelled connecting rod turning a disc crank with spoked flywheel. The beam also drives an airpump with a fully tubed vertical condenser and pivots on a cast rocker frame. Finished in grey with tile simulated flooring and stonework, 16in (40.5cm) long x 11 1/2in (29cm) wide x 14 1/2in (37cm) high.
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