BOOTS AND SHOES.--Mellen Bray, Newton, Mass. ELECTRO-MAGNETIC MOTOR.--W. W. Gary, Washington, D. C. FURNACES.--J. J. Storer, New York city. GAS.--M. H. Strong, Brooklyn, N. Y. GAS APPARATUS.--D. C. Smith, East Northwood, N. H. GAS MACHINES.--T. F. Rowland, Greenpoint, N. Y. MINERAL WOOL APPARATUS.--A. D. Elbers, Hoboken, N. J. MOTIVE POWER.--W. G. Smith et al., New York city. POWER LOOMS.--James Long, Philadelphia, Pa. PULVERIZING MACHINES.--J. J. Storer, New York city. PUMP.--A. F. Eells et al., Boston, Mass. REFRIGERATING APPARATUS.--B. J. B. Mills, Lexington, Ky. SEWING MACHINES.--C. H. Warner, Sturbridge, Mass. SHEET METAL UTENSILS.--F. G. Niedringhaus, St. Louis, Mo. VALVE GEAR.--E. Cope et al., Hamilton, Ohio. * * * * * RECENT AMERICAN AND FOREIGN PATENTS. NOTICE TO PATENTEES. Inventors who are desirous of disposing of their patents would find it greatly to their advantage to have them illustrated in the SCIENTIFIC AMERICAN. We are prepared to get up first-class WOOD ENGRAVINGS of inventions of merit, and publish them in the SCIENTIFIC AMERICAN on very reasonable terms. We shall be pleased to make estimates as to cost of engravings on receipt of photographs, sketches, or copies of patents. After publication, the cuts become the property of the person ordering them, and will be found of value for circulars and for publication in other papers. * * * * * NEW AGRICULTURAL INVENTIONS. IMPROVED HAY ELEVATOR. Eugene L. Church, Walworth, Wis.--This is a hay elevator and carrier of simple and effective construction; and it consists essentially of a traveling carriage locking, by a tilting catch, on a fixed stop block of the track, from which it is released by the action of the bail of the sheave frame of the hay fork on a pivoted grappling hook, the sheave being held in suspended position by the joint action of a fixed hook, of the pivoted hook, and of the tilting catch. A track beam, which is suspended from the rafters of a barn or other building by means of eyebolts passing through the center of the track beam. A carriage runs along the track beam by a pair of flanged wheels, at each end of which the wheels of one pair are set at such distance from each other that they clear readily the suspension bolts as they pass along the same. A hoisting rope is attached, in the customary manner, to a fixed point at one end of carriage, and passed then through the sheave frame of the hay fork, and over a pulley of the carriage, and through a sheave at the end of track beam, and down to the ground, where a horse is hitched to its free end. IMPROVED CORN HARVESTER.