A caving fork
We have a caving fork in our collection at Market Lavington Museum. This is not a piece of speleology equipment for potholers, but was used during the threshing process on arable farms.
Before the days of combine harvesters, threshing machines were used to separate the corn seeds from the straw. See Steam Threshing, Market Lavington, Threshing in 1945 and Threshing in 1976. This was quite labour intensive work and one person would use a caving or keeving fork to clear straw away from the machine.
Our fork belonged to Aubrey Williams, of Court Close Farm in Easterton, hence the initials AW.