Under this heading we shall publish weekly notes oj some of the more prominent home and foreign patents. Potato Digger. Ira Curtis, Des Moines, Iowa. The object of this invention is to provide for public use, a simple, cheap, and effective ma-cnine, which will dig the tubers, cleanse them from dirt, and empty them into a bag or basket. Life Preserver. James Bond, Norfolk, Va. The object of this invention is to provide for public use a convenient, simple, and cheap apparatus, which, in cases of accident on the water, can be readily attached to the person, and by which anyone can easily and comfortably support himself in the water and at the same time propel himself rapidly along in any desired direction. Machine for Gilding. James Lick, San Francisco, Cal. This invention has for its object to furnish a simple and convenient machine for gilding, by means of which the surface to be gilded may be applied to the gold leaf while in the book, thus rendering the ordinary cutting and handling of the gold leaf wholly unnecessary. Mowing Machine. Charles D. Mansfield, Lync, Mass. This invention has for its object to furnish a neat, simple, convenient, and effective mowing machine, which shall be constructed and arranged, that while doing its work quickly and thoroughly, it will have less side draft, and less wear and tear of the machinery, than mowing machines constructed in the ordinary manner. Sleigh Brake. John Maxson and Warren Kinyon, Scott, N. Y. This invention has for its object to furnish an improved sleigh brake, designed especially for bob sleighs, but equally applicable toother sleighs, and which shall be so constructed that it maybe conveniently reached and operated by the driver, and which will be entirely out of the way. Combined Table Sink and Dish. Thomas Ireland, Negaunee, Mich. This invention has for its object to furnish an improved apparatus by means of which the laborious and disagreeable operation of dish washing may be greatly facilitated. Wheeled Vehicles. Samuel Jackson, Newark, N. J. This invention called by the inventor an Oscillating Wheel Carriage," has for its object to so improve the construction of the running parts of wagons, and other vehicles, that they may be easier for the horses, easier for those riding in them, and easier upon the vehicles themselves, making them less liable to be broken should one or more of the wheels strike an obstruction. Coen Planter. Nathan Breed, Jeffersonville, Ind. This invention has for its object to furnish a simple, convenient, accurate, and effective machine for planting corn, which shall be so constructed and arranged that it may be readily made to plant ths corn in accurate check row. Band Drawer. B.W. Field, Ferrisburgh, Vt. This invention has for its object to furnish a simple, conyenient,'and powerful instrument for drawing the patent wire bands, or other bands, upon bales of hay, straw, broom-corn, cotton, or other materials, put up in bales, and which shall, at the same time, be so constructed as to be conveniently operated. Combination TooL.-Edwin Froggatt, Central City, Colorado. This invention relates to a new tool, which is to be used by blacksmiths, and other mechanics,for various purposes, and in which the most important tools, namely, the hammer, screw-driver, wrench, and pincers are combined in such manner that either can be used with great facility. Attachment for Sewing Machines. II. M. Hall, Danby,Vt. The object of this invention is to provide an attachment for sewing machines which by the permutation of its devices will hold or guide the goods in any one of the several operations, such as the operation of seaming, binding braiding, tucking and marking, gathering, hemming, quilting, stitching and others, TWEER. J. C. Wilson, Coalburg, West Va. This invention relates to improvements in tweers, having for its object to provide an arrangement whereby two fires may be blown simultaneously from the one tweer, for convenience in heating large work, or two large pieces, for welding. Ceate. L. A. Lindsey, and J. F. O'Sullivan, Jackson, Miss. This invention relates to improvements is packages for shipping fruit, vegetables, poultry, and for other purposes, whereby it is designed to provide crates of simple and cheap construction, which may bereadilyfolded, so as to occupy but little space, when it is desired to transport them empty or to store them. Nut Locking Device. P. Philippi, Beardstown, 111. This invention relates to improvements in nut locking devices for preventing the nuts from becoming loose upon fastening bolts, and designed more particularly for locking the nuts of bQlts used for fastening fish plates. It consists of a bar having mortises through it or notches in the ends, or sides, to fit the nuts, to be placed on the surface of the fish plate against which the nuts are screwed, so as to engage the nuts in the said notches or mortises, and being held in said position by a bolt or bolts, projecting f romthe said surface and held by spring keys, thereby locking the said nuts and preventing their disarrangement. One-wheeled Velocipede. T. W. Ward, New York city. This invention relates to certain improvements in that class of one-wheeled velocipedes, in which the driver'sseat is arranged above the wheel, itbeing pivoted to the axle of the same. The invention has for its object to provide for an easy balancing of the frame, and consists in attaching weights to the lower end of the seatframe, whereby the same will be retained in a vertical position. The balance can with this weight attachment not be so readily lost as without, and the operation of the one-wheeled velocipede is made easier and more practicable. Cotton Seed Planter. D. H. A. Sanders, Senatobia, Miss. This invention consists of a hollow, hexagonal cylinder, capable of vertical play-mounted on runners, with openings at the salient angles of the sides, in the center to deliver the seed in front, behind a grooved plow, and behind, in front of a scraping covering device, the seed delivered in front being covered by the said cylinder. Machine for Making Powder. Wm. Silver, Bloomsburg, Pa. This invention relates to improvements in the glaze barrels or cylinders commonly used for mixing the component parts of blasting and other powder, de-signedto ventilate the same, whereby the operation is rendered much safer and may be accomplished better and in less time. The invention consists in the application of spring valves to the cylinder, to be opened at certain periods of the revolution of the cylinder, to allow the escape of the damp and explosive gases generated within and the admission of fresh air. Throttle Valve. Charles Doughty Allen, New York city. The present invention relates to new and useful improvements in throttle valves, the, same being operated upon by the governor, in such a manner that in the event of anything giving way or breaking, the throttle valye will immediately close and shut off the steam, and will also close itself should the engine run too fast, for as the balls of the governor raise they will draw the throttle shut. Plumb Level and Guide Line Holder. John Bryant, Akron, Ind.--This invention relates to new and useful improvements in an instrument or apparatus for plumbing and leveling for various purposes ; and it consists in a novel construction and arrangement of parts. Apparatus for Clearing Spiked Cannon. Thomas J. Dobbs, Wee hawken, N. J. This invention relates to a new and useful device for clearing the touch-hole of the cannon where a cannon has been spiked. Fieeaems. Richard S. Lawrence, Hartford, Conn. This invention relates to new and useful improvements in firearms, having more particular reference to the class of firearms known as " Sharp's rifles," but whioh improve, ments (either in whole or in part) are applicable to other descriptions of firearms. Prepaeing Tan Baek. N. Spencer Thomas, Painted Post,N. Y. This invention relates to a; new and useful improvement in the process of preparing bark for tanning purposes, whereby the tan bark used is freed from its impurities, and rendered much more suitable for the purpose intended than when prepared in the ordinary man Medical Compound. Mrs.A. W. Kidder, South Norridgewock, Me. The object of this invention is to supply a simple and safe family medicine, which operates to cure or palliate all diseases arising from an impure state of the blood, by purifying and invigorating the blood. Its general effect is tonic and cleansing. Cultivatoe. J. B. Jay, Arlington, 111. The object of this invention is to produce a cultivator, on which the shovels are made up and down adjustable, and at the same time, so hung that they can be slightly oscillated to avoid stones and other obstructions; another obiect is to protect thedriver as well as the animal from excessive heat, or other Inclemencies of the weather. Bied Cage. J. Maxheimer, New York city. This invention relates to a new manner of connecting the top of a bird cage to the bottom of the same, yith a view of utilizing material and of obtaining a better fastening. The invention consists in the application of a rod, which is fitted through an eye or loop, projecting from the bottom, and which rests on the upper edge of a band or ring of the cage top. This rod is not only a secure and economical fastening for the bottom, but forms, at the same time, a step or sup port for the bird. Pump. Alexander Friedmann, Vienna, Austria. This invention relates to a new pump for elevating or forcing water by means of steam ; and has for its object to reduce the shock produced by suddenly bringing the steam in contact with the water. The condensation of steam is, in such pumps, generally so'.sudden, and the consequent reaction so great, that much power is thereby lost. This invention effects a very gradual condensation, and at the same time, also a gradual expansion of the steam column, so that there will be no reaction and loss, but only a clear gain of power. Churn. J. E. Overacker, Redwood, N. Y. This invention has for its object the construction of a churn, in which a current of air can in the most convenient manner be blown into the cream,beside using the most effective, dashing apparatus. This combination of air and paddles, or dashers, will break the cream, and produce the butter much quicker than can be done; by the dashing process alone. It will also cause a much more thorough butter, ing than could be done by the ordinary process, and will have less butter, milk. Inventions Patented in England by Americans, [Compiled from the " Journal of the Commissioners of Patents."] PROVISIONAL PROTECTION FOR SIX MONTHS. 3,775. Preserving Me at and Animal Matter, and in Apparatus em. ployed for that purpose. Thomas Sim, Charleston, S, C. Dec. 12,1868. 161. Propelling Machinery for Canal Boats and other Vessels. Frederick R. Pike, New York city. Jan. 18,1869. 372. Machinery or Apparatus for Cutting Wire and Rods of Met al and othee Mateeials. W. C. Flinn, Nashua, N. H. Feb. 6,1869. 451. Appaeatus foe Forming Metallic Joints oe Ssams of Tin oe othee Sheet Metal. Joseph Le Comte, Brooklyn, N. Y. Feb. 13,1869. 762. Peeseevative Paiht. Wm. Babcock, San Francisco, Cal. March 12, 1869. 788. Tea verse Caed Geindee. S. H. Wright, Lowell, Mass. March 15, 1869. 794. Steam Vessels foe Ocean and Rivee Navigation. S. W. Wilson, New York city, March 15,1869. 816. Safety Hook foe Harness, etc. Austin Baldwin, New York city March 17,1869. 82S. Anchors. 3. D. Green?, Cambridge, Mass. March 18,1869. 874. MaChieby fob FKLTtNG- Felt Cloths. J. T. Waring, Yonkers N .Y. March 22,1869.