The following inventions have been patented this week, as will be found by referring to our List of Claims :— COMPRESSING AIR.—Samuel Chichester, of Poughkeepsie, N. Y., has invented a machine, the object of which is to obtain from a spring or other prime mover exerting an unmoving or but little varying force, a supply of air for any purpose at a pressure above that of the atmosphere that shall be perfectly uniform, notwithstanding any degree of variation in the quantity used. The machine is especially intended for supplying the necessary quantity of air for passing through and taking up the vapors from the hydro-carbon liquids for illuminating purposes, particularly the liquid invented by Levi L. Hill, and it consists in a combination of a spring with a reservoir and pistons. MACHINE FOR CUTTING CORK.—The great difficulty in cork-cutting machines has been in keeping the cutters sharp, and at the same time not interfering with the operation of the machine. In this machine this difficulty is overcome, for the cutters and saw teeth are kept sharp by an automatic or self-acting sharpener. The cork is fed to the machine, and cut, and the shaving is conveyed away by the saw teeth, and the necessary parts sharpened by the rotation of a wheel or handle. Edward Conroy, of Boston, Mass., is the inventor. MODE OF COOLING MEAL.—This invention consists in the peculiar arrangement of a suo-tion fan, conveyors, and elevators, BO that the meal during its passage from the grinding stones to the bolts, is thereby cooled and dried within a limited space, the whole being a simple and economical device. It is the invention of John Deuchfield, of Oswego, N. Y. DRIVING WHEELS FOR LOCOMOTIVES, PLOWS, &C.—John F. Elliott, of New Haven. Conn., has invented a novel arrangement of legs and feet applied to the driving wheels of locomotives for running upon common roads or for agricultural purposes, such as plowing and otherwise tilling land, or reaping and mowing by steam power, and operated by a cam, or its equivalents, to cause the propulsion of the machine or engine by the rotary motion of the wheels. PORTABLE CHAIR LOUNGE AND BEDSTEAD. —This invention contains in one simple article the above useful comforts. It consists in a sort of chair frame, so arranged that by shifting a couple of straps it may be converted into an easy chair, or if desirable into a sort of sofa lounge; or, by another change of the straps, it may be horizontally extended into a comfortable bed. The legs are hinged, and the whole folds up into a small pack. To take up one's bed and walk, with this contrivance, would be a very easy matter. We have had one of these chairs in practical use for some time past, and therefore speak from experience when we say that it is. an excellent improvement. For camp use it is just the thing, and our government ought to give it a trial among the soldiers. The inventor is Z. C. Favor. The assignees of the patent, who my be addressed for further information, are Messrs. Brown & Hilliard, Chicago, 111. The following inventions were patented last week :— CARRIAGE WHEEL.—With this arrangement, after the spokes are inserted and the wheel put together, the wheel can be tightened by simply inserting the taper axle-box, expanding an annular packing ring which is placed within the eye of the hub, and causing the same to bear against the ends of the spokes, and force them outward until the wheel is tightened up ; and again, in case of shrinkage, after the wheel has been in use, by simply withdrawing the taper box and inserting a duplicate packing ring and again driving in the taper axle box, nil the spokes can be moved radially outward, and the wheel thereby tightened up. We regard this as a good attachment to wheels. It is the invention of B. A. Rogers, of Shubuta, Clark county, Miss. COAL HOISTER.—With this machine, the coal car loaded can be hoisted from the railway of the mine or pit, to a convenient or proper position relatively to a dumping shute, and then automatically dumped and allowed to re-adjust itself and descend to its original position ready for receiving another load, without any other attention other than the turning of a windlass shaft to the right and left. It is the invention of George Martz, of Pottsville, Penn. FILTER.—This invention is designed for purifying the water used in steam boilers, and thus prevent incrustations of lime and sediment over the inner surface of the same. The arrangement adopted is very simple and perfectly automatic in its eperation, the weight 6"f the discharging filtered water being made available at intervals for opening certain valves, so as to effect the discharge of all sediment which may have accumulated in the t bottom of the filtering vessel. It is the inven- ^ tion of Dr. A. Jaminet, of St. Louis, Mo.
This article was originally published with the title "Recent Patented Improvements" in Scientific American 13, 34, 267 (May 1858)