David and Lyman Clinton, of North Haven, Ct., have taken measures to secsre a patent for an improved Straw Cutter Cylinder. The improvement consists ill attaching a wrought-iron shaft tu the cast-iron cyl ind er holding the cutters ; this latter may be either cast around the former or cast separate from it, and afterwards secured by pins. The. object proposed i8 to render the cylinder more durable, ,\8 cast shafts, which is the ordinary methud generally break at the points where the knives are attached to the flanges