A Special to longcamp.com
Paul R. Rosewitz, Lt. Colonel, US Army
Night Chief of Operations
HQ ISAF (NATO)
Just a quick comparison. I think this is how it matches up. Still the metal seems light to me, but the shapes all match. I think the sheet metal is the axle band--if you look, you can see it is rounded somewhat that would match the rounding of the axle. As you can see, it goes on the bottom of the axle.
I did these really quick, so they are not website quality, but they will get you the idea.
Ed. Note: These carriage plans are for the M1828 French Mountain Howitzer. The US M1835 was a copy of the French carriage, which went through a number of modifications before being standardized in 1848 following the Mexican War. There are other differences, because the US copy of the French Tube, as cast by Cyrus Alger in Boston, had the trunnions placed on axis with the bore, rather than under axis on the French tube.
May, 2011. Here is a recently obtained photo of the as-recovered assembly which shows details of the trunneon plate; specifically, the forward area with the two rows of perforations.
Paul Rosewitz comments:
The later carriage (from 2nd edition Ord. manual ,1850) actually only used three nails per plate, the two at the end of the stap and one in the center of the stock this carries over to the 3rd ed ord manual. These were positioned differently and sometimes they were all on the front in a triangle or one in the center and two in the lower bend.] But for our discussion the French model as depicted in the plan has eight per strap. The manual calls for six. I can't see the recovery picture well enough to see how many holes are actually present on the strap other than the two on the end that would have been covered by the end of the axle stap.
Below is Bob's digital measurement of
the tire diameters from Herb's photograph taken at the
Ranger Station in Bridgeport.