I was able to find 3 US patents issued Nov 1, 1870 that related to fire arms. A similar search for Nov 1, 1876 turned up no firearm patents issued day. At least that I could find.

This is the most likely in my opinion:

http://www.google.com/patents?id=jH1cAAAAEBAJ&dq=108942&num=30

Patent number: 108942
Issue date: Nov 1, 1870
Inventor: WILLIAM MIDDLEDITOH SCOTT

Be it known that I, WILLIAM MIBDLEDITCH SCOTT, of the firm of W. and 0. SCOTT & Sos, of Birmingham, in the county of Warwick, England, gun manufacturers, a subject of the Queen of Great Britain.

My invention relates to breech-loading fire-arms of the kind commonly called drop-down guns, and consists of the improvements hereinafter described in the construction of the joint ou which the barrel or barrels turn, the said improvements having for their object to preserve the close contact of the breech ends of the barrels against the face of the break-off when the barrels are shut down, notwithstanding the wear to which the said joint is exposed. Figures is the same, with the adjustable joint-hook in longitudinal section. In constructing the joints of drop-down guns according to my invention, I make the parts in the ordinary manner, excepting that instead of making that part of the joint called the hpok on the end of the lurnp'on the under side of the barrels in one piece,with the said lump, I make the said hook separate from the lump and connect it therewith and adjust it in the following manner: I make the said hook of.a separate block or piece of iron or steel, having at its back a stem.


http://www.google.com/patents?id=F2NcAAAAEBAJ&dq=108869&num=30

Patent number: 108869
Issue date: Nov 1, 1870
Inventor: HIEAM BEEDAN
Assignee: THE BEEDAN FIREARMS
HIEAM BEEDAN, OF NEW YORK, N. Y., ASSIGNED TO THE BEEDAN FIREARMS COMPANY

This invention relates to that class of breech-loading fire-arms the breech-piece of which is in the form of a sliding bolt, opening and closing with a movement parallel, or nearly so, with the bore of the barrel. In this class of breechloaders it has been heretofore difficult to obtain a cartridge-shell extractor positive and reliable in its action.

http://www.google.com/patents?id=9mJcAAAAEBAJ&dq=108836&num=30

Patent number: 108836
Issue date: Nov 1, 1870
Inventor: PETER SCHULER

Morris, in the county of Ripley and State of Indiana

The invention consists also in a novel construction of said cartridge-shell and head, the latter being provided with a groove for the locking-cam. The -invention consists also in the use of a spring-dog for holding the hammer cocked

Pete

http://www.damascus-barrels.com/Movie.html