in artillery, is an engine employed to raise guns or mortars into their carriage. It is formed of two pieces of wood about four feet long, standing upon a third, which is square. The uprights are about a foot asunder, and pierced with holes exactly opposite to one another, to receive a bolt of iron, which is put in, either higher or lower at pleasure, to serve as a support to a handspike, by which the gun is raised up.

By the author of the Military Guide, this is said to be the most useful of all the inventions for raising guns into their carriages; and it seems these inventions have been many.