Jackson, Andrew & Martin Van Buren

2 pages, printed on vellum (14 1/4 x 11 1/2 in.; 365 x 290 mm.), signed "Andrew Jackson" as President and "M. Van Buren" as Secretary of State, embossed paper seal of the United States with chartreuse ribbon; on verso is a autograph signed declaration  by Henry Rogers, dated March 26, 1863, assigning one half of his patent rights to James and Oscar F. Cilley of Ottawa County, Michigan, also signed by John Rice, Justice of the Peace; formerly folded, with small tears to the fold, trimmed short on top of the document and lower right corner torn, not affecting the text. 
[with]
Henry Roger's illustrated, autograph description of the devices (14 3/4 x 12 in.; 375 x 307 mm.), signed by the inventor; formerly folded, laid down with lacks on center fold, affecting the text but not the drawings, margins chipped.

“Lamont Pioneer Was the First to Invent a ‘Four Cylinder’ Gun,” Coopersville [Mich.]
Observer, Nov.10, 1939; “List of American Patents Granted in May, 1829,” Journal of the Franklin Institute, vol. 4 new series (1829), p. 124.

An early innovation in American firearms, signed by two American presidents, and illustrated by several drawings and diagrams. This patent for “a revolving four barrel gun and improved percussion lock” predates Samuel Colt’s famous revolver by seven years.