Two wheels in two pulleys at the end of the rudder corrected this defect, and compensated, to some extent, for the loss of strength.
A simple, single piece that can be taken into the hand, as a spade, a hammer, a knife, is a tool; a combination of wheels, levers, pulleys, etc., is a machine.
There Dillon collected many relics of the shipwreck: iron utensils, anchors, eyelets from pulleys, swivel guns, an eighteen-pound shell, the remains of some astronomical instruments, a piece of sternrail, and a bronze bell bearing the inscription "Made by Bazin," the foundry mark at Brest Arsenal around 1785. There could no longer be any doubt.
These were bolted together at the top, while the other ends were fixed at a distance of about ten feet apart in a large block of wood. This contrivance acted capitally, and by manipulation of ropes and pulleys the heavy stones were swung into position quickly and without difficulty, so that in a very short time the masonry of the bridge was completed.