Breechldrs Difference in Sharps New Model; 1859 & 1863

[hrobalabama]

I sold my Sharps book at a gun show some years ago, My ? what changes were made in the "New Model" 1859 and 1863?
I know that some of the 1859 rifles had a bayonet lug but other than that what merited a "New Model" in the rifle?
I know some of the earlier carbines had a patch box but other than that what changes?
Thanks for your input!

 

[JOHN42768]

As you mention the patch box was eliminated, buy not until after approx the first 1000 New Model 1863. I have an very early 1863 with patch box. Markings on the barrel of course. Main difference was the clean out screw in the breech block was replaced by a large headed slotted one to replace the small headless one.