Report of the Commissioner of Patents for the year .. (1849)
United States. Patent Office · Washington : Office of Printers to House of Reps. · leaf 221
rds e e pass over the rollei's on the top of the wash-boards, and are secured to the side of the box, to prevent the two wash-boards b b from rising, f f are floats of wood secured to the inside of wash-boards b B by means of cords as shown in the drawing, which cause the wash-boards to be drawn…
United States. Patent Office · Patents · Agriculture
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
