Pump for Aveling GND

[jameso]

Hi all, a friend is after a boiler feed pump for 1914 Aveling GND. Any ideas on where to source one? Thank you

[William Allchin]

Hello James,

Go to page two on the patterns section. At the bottom there is a pattern which is owned by " Onward".

[jameso]

Thank you William, Feed Pump 31043? I think this may be showing my ignorance in full, but what would I do with a pattern? Is it a design?

Many thanks, James

[weidner]

Oh , Dear , a pattern is what you use to form the mould for a casting .
The principle is that you make the shape of the thing in wood , then use that to make a mould by putting it into a box and ramming a mixture of sand and binders around it . You then split the mould , remove the pattern and reassemble the mould . You then pour the molten metal into the space in the mould . When it has cooled you extract the cast object from the mould , and machine it to make what you want .

For good pictures of patterns and castings look at Little Samson's posts .

[The Pirate]

But that pattern is for boiler mounted pumps.
GND tractors have the pump mounted on the left hornplate, below the steering wheel with reduction gear drive from the crank.