Yes, the carriage illustrated is that of a Mle 1878, Pour Canon De 120 Mil. Long. The piston-like devise you see lying beneath the system was a common feature of Artillerie de siege. The piston was anchored to a secure ground pinion, and when the gun was fired, this piston returned the piece to battery. ( Though the weapon still required gunner realignment to target. )
This system was by no means unique to French artillery; indeed this particular carriage recoil was utilized by virtually all nations in the late 19th century employing heavy artillery. It was generally not used in the field, however, because of frequent battery position changes. A pair of wheel ramps were used instead.
I might add that large numbers of De Bange guns were put to use by the German army to supplement their expanding artillery programs. They prefered range as opposed to rapidity of fire for a heavy gun, so these rugged pieces served them reasonably well when firing in battery.
-- Edited by 28juni14 on Saturday 12th of December 2009 08:26:23 PM
...essentially Yes. Keep in mind, at the war's beginning these systems were largely located in fortresses, or storage, and were not organic to field division or corps. Only after ordnance experts were sobored to the limitations of the "75", were they pressed into widespread use again. As I mentioned before, though slow firing, these large pieces had excellent "reach".
And thanks Bernard, for the excellent illustrations; the first detail drawings of the recoil system I have seen!
-- Edited by 28juni14 on Monday 14th of December 2009 06:01:23 PM