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The following inventions have been patented this week, as will be found by referring to our List of Claims :— REVOLVERS.—Rollin White, of Hartford, Conn., has invented some improvements in that class of fire-arms known as revolvers, in which the many-chambered cylinder is arranged to rotate on an axis that is parallel or nearly so with the stationary barrel. The first improvement consists in enlarging the chambers, or a portion of them, towards the rear, when the whole or a portion of the chambered cylinder is made in a separate piece from the breech, for the purpose of allowing the cylinder, or the portion of it that is detached from the breech to be driven forward in contact with the stationary barrel, to make a tight joint therewith by the force of the explosion of the charges. A second improvement consists in making the detached breech of a rotating chambered cylinder rotate with the cylinder, thereby obviating any stoppage to the rotation of the cylinder by the protrusion of the cartridges through the rear of the chamber; and a third improvement consists in a certain construction of the rotating breech for the purpose of allowing the hammer to strike into the chambers and explode a priming in the rear end of the cartridge, without using a needle or a detached priming, such as a cap, pill, or ribbon. SEWING MACHINE.—This invention relates partly to the needle die, that is sometimes used for the purpose of guiding the needle and holding it steady while the looper enters between it and its thread. This part of the invention consists in making the needle die in two parts, one of which is movable to such an extent under the influence of a spring, that the die adapts itself to needles of various sizes, thereby obviating the necessity of providing each machine with two or more dies, which require changing when one needle is changed for another of different size, and also obviates the necessity of getting needles to fit the dies exactly. The invention also consists in a novel arrangement of a needle die, looper, and stationary finger, in combination with an eye-pointed needle, to sew the chain stitch with a single thread without missing any stitches. J. E., J. C, &0. Atwood, of Mansfield, Conn., are the inventors. IRON AND GLASS SHUTTER.—James Mcln-tyre, of New York City, has invented a new sliutter, which consists in the construction of a rolling shutter with slats of iron and glass combined in such a manner as to render it not only burglar-proof and fire-proof in the same degree as shutters made wholly of iron, but sufficiently translucent to light the interior of a store, house, or office in the day time, enough for many purposes, when it is not desirable to open it, and also to expose to persons outside any light that may be used by a thief who may have secreted himself in the day time to wait for the closing up of the store. It can be easily rolled up, and possesses a combination of characteristics never before attempted in the construction of any shutter. TRUSS PAD AND SUPPORTER.—This invention is designed for curing hernia or rupture, and it consists in a perforatedpador supporter, which supports the injured part of the body,' and at the same time allows and maintains a perfect and healthful ventilation or circulation of air through it and over or around that part of the body covered by the pad. The pad can also be made hollow and open at the back, so as to admit some healing substance. And it is attached to the body strap in such a manner that it cannot shift, and still only has one screw which requires to be started in order to adjust it to the desired position. We regard this as a most excellent invention, and think every one suffering with rupture or hernia will be benefited by it. Wm. F. Daily, of Baltimore, Md., is the inventor. MACHINE FOR DEEPENING RIVERS AND HARBORS.—This machine has two screw excavators placed at the front end of a boat, the screws being placed angularily with each other, and so arranged that, as they are rotated and the boat propelled along, the bed or bottom of the river or harbor will be scraped out and thrown on either side, thereby deepening the channel. The screws are so arranged that they may be raised or lowered as desired, and they are rotated by a steam engine on the boat, which also drives the propeller thereof. E. B. Bishop, of Shreveport, La., is the inventor. SCREW WKENCH.—E. Scripture, of New Haven, Conn., has invented a new screw wrench, the novelty of which consists in the means employed for operating and adjusting the movable head or jaw of the wrench, so that this head or jaw may be quickly moved and firmly adjusted to the nut or other article to be turned or operated upon; the implement being held and the head or jaw operated with one hand only. ROI-LING MILL.—This invention relates to the application of eccentrics to the journals of one roller of the pair or set employed in a rolling mill, in such a manner as to effect the rolling of articles of more or less taper form as pile blanks, or articles of parallel form as may be desired. It is the invention of John A. Bailey, of Boston, Mass., who has assigned I it to Jas. Horner and Jas. Ludlum, both of ( New York City. tf
