Patent for a chemical fire-extinguisher meant to "provide an improved acid-receptacle which will obviate the objects to the ordinary acid-bottles now in use" (lines 15-18).

Patent for "a construction of propeller-wheel that will permit a large reduction in the wheel-diameter without impairing its effectiveness, and which will thereby bring the resistance nearer to the crank-range of the motive power, and also to increase the bucket or blade surface of the wheel and at the same time afford such clearance at the center of the wheel as will relieve resistance to easy operation of the engine or motive power." (Lines 18-27) Includes instructions and illustrations.

Patent for an electric-current control or rheostat to be used when a "close, accurate, and absolute graduation of the current is necessary" (lines 15-16), in places "where a very delicate graduation is necessary either in passing the plain galvanic current or where the current is used for producing anesthesia" (lines 19-21).