GAS STOVE.--Wm. J. Hays, New York city.--This invention has for its object to construct a gas stove, with an extender radiating surface, and with proper air channels, so that with a comparatively small amount of heat, the air in an ordinary-sized room can be properly warmed. SCRIBE HOOK FOR WEATHER BOARDING.--John Nester, Portland, Oregon.--This invention relates to a new scribe hook for weather-boards, which will be generally useful and adaptable to the purposes for which it is intended and to provide an adjustable spur and marker. RAILROAD SMOKE CONVEYER.--Lemuel Powell, Milford, Conn.--The object of this invention is to prevent the smoke and ashes, issuing from the smoke stack of a locomotive, from entering the cars of the train and from thereby preventing the proper ventilation of the cars. DRILL FOR BORING POLYGONAL HOLES.--J.C. Broadley, Franklin, N.J.--This invention relates to a new implement for boring polygonal, oval, star-shaped, or holes of other suitable form, in metal, wood, or other material. The invention consists chiefly in arranging the pattern, which regulates the shape of the hole to be bored, on the upper part of the drill shank, and in having the bit shanks, which are pivoted to the lower part of the drill shank, held by means of springs against the inner edges of the inverted cup-shaped pattern. ROOFING.--H.G. Noble, Selma, Ala.--This invention relates to improvements in roofing, and consists in covering roofs with sheet metal, laid on the rafters and nailed down at the edges, so as to be considerably concaved between them, the joints on the rafters being covered by inverted caps or troughs. The concave form of the sheet is designed to prevent the sheet metal from cracking, to which it is subject by expansion and contraction when laid on flat. WASHING MACHINE.--John J. Kimball Naperville, Ill.--This invention relates to improvements in washing machines, and consists in an improved arrangement of operating mechanism for revolving a vertically suspended shaft with a crank at the top, and carrying within the tub a corrugated or roughened rubber, for action on the clothes. The invention also comprises an improved arrangement of the rubber, whereby it is made capable of sliding up or down on the shaft, according to the amount of clothes to be acted on. BOLT CUTTER.--O.E. Butler and S.P. Dunham Marshalltown, Iowa.--This invention relates to improvements in hand instruments for cutting bolts, and consists in the combination with the handles of an instrument, such as patented to the inventors, January 19, 1869, as an improved instrument for sharpening horseshoes, of a cutting pin of peculiar construction, whereby the said tool is adapted, when this cutter is applied in substitution of the cutter and jaw, is used for sharpening horseshoes, to cut off the ends of bolts with great facility.