Engineering. FURNACE.—Milton T. J. Oehs, Allen- town, Pa. This is a furnace especially designed to utilize sa fuel tan bark, mill refuse. and similar material. A series of transverse arches is arranged in step-like order above the grate, their adjacent edges overlapping and spaced apart to form latetal openings for the products of combustion to pass between the arches, there being in the furnace walls flues whose lower ends open into the ashpit below the grate while their upper ends open into the fire box below the arches. Railway Appliances. CAR COUPLING.—Robert T. Dressler, Buchanan, Mich., ana Velimir Timitch, Hastings, Neb. According to this improvement the coupler has its draw-head pivotally connected with the draw bar for a horizontal oscillatory movement, and the draw bar is pivotally connected to the car frame and held in engagement with adjusting and locking devices whereby the bar may be adjusted vertically. The coupling is automatically effected when the drawheads come together, the uncoupling being effected from the top or sides of the car, and the coupling members being positively held from jumping up when they engage. FARE Box.—Le Roy C. Godwin, Portsmouth, Va. This Is a box adapted to be supported from the body of the conductor by a shoulder strap for the reception of fares, the coin after having been placed in the box being still visible. There is also a purse or storage chamber for the final reception of the coin, provided with a suitable locking device. The throat or inlet of the boj is so made that a coin may be readily passed in, but can not afterward be fished out. Miscellaneous. BICYCLE DRIVING GEAR.—Dan Gregory Bolton, Cooperstown, N. Y. This is a changeable gear, light, strong and simple, for driving a wheel witl more power and slower speed up a hill or on rough road or at a greater speed on a level. The change from on geanng to the other is readily made by means of a hand lever, without inconvenience to the rider, and the con struction is designed to combine the maximum ol strength with the minimum of weight. BICYCLE BELL.—I. N. Hopkins, Lock port, N. Y. This improvement combines a bicycle han die and alarm bell, which can be readily placed on th handle bar instead of one of the ordinary handles, and b operated by the thumb of one hand. The handle is tu bular, and at its outer end is a metallic ring integral witl a yoke which snpports the bell, whose rim is near bu not in contact with the end of the handle, the externa form of the bell conforming to the curvature of the han die, and forming a properly rounding finish for the han die end. WALL TELLURIAN. —Grant B. Nichols Wapakoneta, Ohio. This is an apparatus adapted to b folded against a schoolroom wall, to take up but littli space, and comprising an inclined table with apertures arranged in an ellipse to represent the path of the earth, a second series of apertures representing the path of the moon with respect to the earth, a rod in a central aperture carrying a ball representing the sun, while ball-carrying rods represent the earth and moon, these rods to be at any time inserted on the proper date in their respective apertures, to show the relative positions of the sun, earth, and moon. The invention also comprises other valuable features designed to facilitate the work of teachers. INDEX CUTTER.—Frederick C. Meh- nert, Goshen, Ind. For cutting the index sheets or leaves of books this inventor has devised an apparatus to be easily operated by an inexperienced person, doing the work with great precision and rapidity. The book whose leaves are to be cut is placed on an adjustable platform, when the leaves are laid on a die and beneath a presser foot, and, by stepping on a treadle. a cutter head is moved down to cut the leaves. The platform may be automatically fed lengthwise to bring successive leaves in position to be cut. COPYING BOOK. — Ed win Fowler, Kansas City, Mo. This is a letter press book having a series of sheets forming surfaces receptive of copying ink for press copying, the sheets bearing consecutive numbers or letters in copying ink, which numbers are transferred to letters copied. By this means copied letters may be conveniently designated and found in the copying book. HYDROCARBON BURNER. -— Jacob W. Rees, Cleveland, Ohio. This burner is adapted to burn either oil or gas, producing the gas from oil, and is provided with an asbestos-lined drip pan adapted to be set in the flre box of an ordinary cook stove. burners being supported on standards above the drip pan to bring the flame to the proper position. Oil burned on the drip pan generates gas in a generator supported above the pan when the apparatus is employed as a generator and urner. TYPEWRITER ATTACHMENT —William S. Bigelow, Boston, Mass. This invention provides a simple device by which the key when depressed will be held down, as when upper case or figure printing is to be done, the key being released by a natural and easy movement of the hand and finger, when such printing is finished, to throw the machine into normal position. An independent spring catch is adapted to engage and project above the key to hold it depressed, the key being released by a wiping or drawing movement of the operators finger. PHOTOGRAPHIC SHUTTER RELEASER. —Arthur M. Boos, Boston, Mass. To automatically release the shutter, in time or instantaneous work, enabling the photographer to be away from the camera while the exposure is made, this inventor has provided a device for pressing the shutter-releasmg button, the device being normally held out of contact by a fuse string, the time of burning of which regulates the duration of the exposure. MUSICAL INSTRUMENT. — Lewi s E. Pyle. Elam, Pa. This invention relates to mandolins, gnitars, etc., and provides an instrument designed to be rich in melodious tones, while it is arranged to prevent bending of the neck, and formed to fit properly on the body to facilitate executing the music. The body of the instrument is approximately heart-shaped, and the tailpiece is located in the recess at the base of the instrument, being thus protected from contact with any sur-face on which the instrument may be placed. FISH POND.—Charles Braaf, New York City. This is primarily an apparatus to afford .amusement, comprising II pond or aquarium inwhich artificial fish may be placed and kept constantly moving to represent life, the water being also in motion. The construc-tion is such that a single attendant may wait on visitors, and a stand is also provided for the display of prizes, each fish being numbered and the prizes being for EUC-cessful fishers. BEDSTEAD. — Andr e w S t ratton, Augusta, Wis. This is an improvement in bedsteads which have legs that fold and provided with casters for easy movement. A supplemental frame is arranged to telescope on the bed frame, and prop legs pivoted on one frame have their ends arranged to engage the other frame, there being means to hold the prop legs in adjusted position. The bedstead, when not in use, may be made to take np but little floor space. BATH TUB.—Elizabeth G. Smith, New York City. This invention provides a tub which may be readily moved from place to place and conveniently set up, the tub having a collapsible frame, the bottom and auxiliary sides of which are formed of a sheet of waterproof material, the sheet having stiffened edges adapted to pouring water therefrom, while removable fastening devices hold the sheet in engagement with the upper edges of the frame. STOVE.—Mark W. Foster, Pecatonica, Ill. In heating stoves which have a horizontal damper or diaphragm dividing its interior into two compartments, this invention provides an improved construction, there being a slidable horizontal damper in the combus-tion chamber with a central opening directly beneath the pot hole, there being an independently slidable plate for closing the opening. Special means are also provided for suspending and rocking the grate. VEHICLE RUNNING (TEAR. — James Duncan, Adelaide, South Australia. This invention provides for the employment of a special spring bed extended so as to also form a draught bar, at the two ends of which are lugs or joints which are fitted to and receive the shaft ends or pole bracket ends. the joints being above the springs. The improved construction, which is applicable to buggies and other four-wheeled road vehicles. is designed to obviate a great deal of friction, wear and rattle. I VEHICLE CURTAIN. — Frank Lane, j Newark. Ohio. For buggies, phaetons and similar top ! carriages, this invention provides a curtain arranged to be easily and quickly operated to open or close the sides of the vehicle, the improvement comprising a tubular casing or socket in which ts journaled a spring-pressed roller carrying the curtain. THILL COUPLING. —Frank W. Warner, Angelica, N. Y. This coupling has a clip plate with transverse slotted socket in which is held the shank of the thill iron, screw bolts across the ends of the socket bearing on the ends of the shank. The clip plate is formed of a single piece of sheet metal having one end wider than the other, the opposite eides of the wider end having opposite wings oppositely perforated. TRUSS.—Joseph Fandrey, Santa Barbara, Cal. This is a device for the support and reduction of hernia, and designed to be specially adapted for the cure of abdominal ruptures, while being easy to wear and not liable to shift from its position. Designs. PUMP CASING.--Aquila B. Marshall, New York City. This design shows a casing especially designed for a bicycle air pump, and having a cylindrical portion and a broadened end. BADGE.—Charles A. Barker, New York City, and Frederick L. Green, Lone: Island City, N. Y. This design simulates an elephant in profile and in front view, while a spur from the back forms a support. CHRISTMAS TREE ORNAMENT. —Victor A. De Prosse, San Francisco, Cal. This design affords a decoration made to represent a conventional flower or lily. NoTE.—Copies of any of the above patents will be furnished by Munn & Co., for 25 cents each. Please send name of the patentee, title of invention, and date of this paper.