Tool for Attaching Wheel Tires. —tool is shown in patent No. 1,007,640 to James L. Butler, Akron, Ohio, assignor to the American Tire&Rubber Co. of Akron, for attaching a tire casing to a rim over compressible cores such as are now used in some tires. The tool has a chain passed around the tire and rim and connected with a main lever so that the operation of the main lever may compress the casing and core, and the main lever is provided with a jaw to press the hooked edge of the casing into engagement with the rim flange and also means to guide it into such engagement. A Self-returning Exercising Dummy.— In patent No. 1,007,628 to Wm. P. Armstrong, Washington, D. C., assignor to The Strong Arm Mfg. Co., is shown a dummy figure' in the form of a man mounted so it can be rocked on a weighted base which has a rolling surface the bottom of which )s flat so that the figure when knocked one way or the other will persistently tend to maintain or regain a fixed position. A weight is connected by a suitable guided cord with the head of the dummy, thus aiding in the readjustment of the figure to its normal upright position. For Teaching Aviators.—Patent. No. 1,007,467 to Wm. F. Mangels of New York city is for an apparatus for teaching aviation and for testing aeroplanes and includes a car on a track and means for running the car at approximately the same speed as the aeroplane. On the car is a frame and in the frame is suspended a power driven aeroplane and its operator, so the aeroplane can to a limited degree move laterally and lengthwise in the frame as well as up and down so the operator can drive the aeroplane at any speed and steer it in any direction, the car and its frame preventing dangerous accidents. Drying Wood by Electricity.—Alfred Upton Alcock of Perth, Western Australia, in a patent No. 1,007,513 provides an electric apparatus for drying timber, which includes liquid electrodes adapted to engage the ends of the piece of timber to be dried, a source of electricity and conducting wires which lead from said source and have their free ends immersed in the liquid electrodes to form a circuit. A Novel Toy.—Many of us can recall trotting, when small, on the foot of some older member of the family who crossing his knee would seat us on his foot and jounce us up and down. A toy (patent No. 1,008,547 granted to Claudius B. Johnson of Fulton, Mo.) simulates this ' action by means of two figures, one representing an elderly person sitting with crossed leg and the figure of a boy on the raised foot, the leg being pivoted and a counterbalancing weight being within the body of the larger figure, so' that the figure of the boy can be trotted up and down for a considerable period. Demand Abroad for Smoke Consumers, —U. S. Consul Carl Bailey Hurst, Lyon, France, writes that owing to an increase in the smoke nuisance a municipal order has been issued at Lyon calling attention of manufacturers and others to an ordinance of a few years ago with relation to thick black smoke. The consul adds: “There seems to be an opportunity of introducing in this vicinity smoke-consuming systems or devices. Any printed matter advertising such will be displayed II this consulate, and brought to the attention of those most likely to be interested." RECENTLY PATENTED INVENTIONS. These columns are open to all patentees. The notices are inserted by special arrangement with the inventors. Terms on application to the Advertising Department of the Scientific AmERICAN. Electrical Devices. WAVE DETECTOR.—T. H. Lyon, The Preygen, 32 Morris Road, Southampton, England. This invention relates more particularly to wave detectors of the kind known as rectifiers and which employ crystalline or crystalloid substances to be energized by electric oscillations and which may be employed in connection with wave meters as well as in the commercial and experimental sending of messages in wireless telephony and telegraphy. Of General Interest. FOLDING RACK.—J. Kohn, 117 W. 10th Street, New York, N. Y. This invention refers to racks, such as are used in garment factories, stores and other places for supporting and displaying garments. The object is to provide a folding rack which can be readily extended for safely supporting and displaying garments or other articles, or which can be folded when not in use to take up very little space. PROCESS OF REMOVING INK FROM PAPER.—John E. Bonser, care of Morning News, Abilene, Texas. This invention is illustrated in the accompanying engraving which is a diagrammatical view showing the apparatus that may be used in connection with the process. The process removes printers' ink and analines from news, rag, linen and bond papers, and pulps thereof. The aim is to provide a process which will effectively remove the inks from papers so that the latter may be used again in the manufacture of other papers. A further object is to provide a process which is comparatively simple and of great economy. lock block for paper rolls.—j. l. Orr, 400 Victoria Avenue, Lynchburg, Va. In this case the invention is an improvement in plugs or brushes for use in paper rolls, being in the nature of a lock block which when inserted in the end of the paper roll will be locked therein from accidental displacement and will remain in position until the roll of paper has been used up. FRUIT PICKER'S LADDER.—T. O. Hutchinson, Walterville, Ore. The design is to furnish a ladder adapted for use in picking fruit and for use by painters and builders In any building operations. and the invention provides a ladder including a movable platform easily adjustable to various heights for the purpose of picking fruit, erecting cornices, weatherboarding and painting houses, sanding, sign-writing and other work requiring the workmen to be- elevated above the ground. COMBINATION COAT, HAT, PACKAGE, AND SATCHEL CABINET.—W. ' H. Jay, Arcade Hotel, Le Beau, S. D. The aim in this improvement is to provide a cabinet having a locker, and also having a satchel fastener arranged at the outside of the locker, and in which access to the locker, removal of the garment from the support, and the detachment of the fastener are controlled by a single lock on the door of the cabinet. COMBINED DRYING AND CONVEYING SYSTEM.—A. Gnadt, 2703 South Seventh Street, St. Louis, Mo. This invention relates to a system for utilizing waste heat from a battery of boilers or the like, In drying any material, such as salt, saw-dust, or the like, while conveying it from one point to another. The system is readily accessible for the purpose of cleaning and manipulation. PACKAGE.—W. I,. Bretherton, care of W. A. Clark, Titanite Explosive Co., Corry, Pa. This invention has in view a tubular container which is water-proof and which can be inexpensively produced, the tube being constructed of paper or strawboard, or equivalent material, and given a coating of paraffin containing other ingredients of a water-proofing character. Heating and Lighting. ACETYLENE GAS LIGHTER.—H. Van Hoevenberg, Lake Placid Club, Lake Placid. N. Y. The invention comprehends an electrically-operated gas lighter having two movable contact arms and mechanism connected with said arms for actuating the same, the parts being so arranged that the contact arms are brought into engagement with each other, a current is completed through them, and the arms are next separated in or near the path of the flame and are finally brought back to their respective normal positions, the arms thus making an idle contact, but without closing the electric circuit. machines and Mechanical Devices. SAFETY DEVICE FOR ELEVATORS.—S. F. Glimm, 3508 Avenue F, Brooklyn, New York, N. Y. This device is for use on passenger and other elevators. The invention refers more particularly to a device comprising in combina tion a lock for preventing the movement of the elevator car, means whereby the operator of the elevator can control the lock, and means controlled by the elevator door or other closure for controlling the first-mentioned means. REVERSING MECHANISM FOR POWER DRIVEN MACHINES.—C. Fredrickson, Rice Lake, Wis. Among the principal objects which the present invention has in view are ; the provision of a simple, efficient and durable means for varying the speed in transmission from a driving to a driven shaft; and to provide a mechanism of the character set forth, simple and effective in operation. The mechanism may be used in conj unction with any suitable machine. MOLD FORMING MACHINE.—C. E. Simpson, 640 Gallia Street, Portsmouth, Ohio. This continuously automatic acting machine employs an endless chain of carriers provided with pattern plates adapted to receive and deliver molding frames for the formation of drag and cope molds; it has a series of successively connecting pattern plates and an intermittent feed mechanism arranged to advance each of the plates to and from stations where the facing sand and ramming sand are delivered to the mold and to a station where the sands are rammed. FEED TABLE FOR TENTERING MA-CHINK—B. Parkinson, East Greenwich, R. I. The principal purpose of which the present invention has in view is to provide tension devices for feeding the cloth to the reciprocating bed of a tentering machine, and a take-up mechanism for lifting the slack of the cloth due to the return of the bed of the tentering machine constructed as mentioned. MECHANICAL EYES.—P. C. Jacquerod. West New York, N. J. In the present patent the invention has reference to mechanical eyes for dolls, lay figures, or other use. The object of the improvement is the provision of a practicable construction whereby the eyes may be capable both of the ordinary opening and closing movement, and of moving laterally. Prime Movers and Their Accessories. IGNITER FOR INTERNAL COMBUSTION ENGINES.—C. Messersch m i d, 696 Bergen -Street, Brooklyn, New York, N. Y. This invention is an Igniter or spark plug for gas and other internal combustion engines which is designed to operate on high and low tension circuits. It is provided with a pair of jump spark electrodes and a pair of make-and-break spark electrodes operable exchangably, according to conditions. The last named are preferably operated by an electromagnet incorporated with the plug structure. The electrode carries the high tension electrode which extends therethrough and terminates in proximity to a fixed spark point to the inner end of the plug. BILGE PUMP.—G. E. Badger, Mayger, Ore. In -this case the aim is to provide a rotary pump for launches, which is driven by a friction wheel which may be thrown into and out of engagement with the flywheel of the engine by a system of levers and connecting rods which are .operated by a treadle. ROTARY MOTOR.—J. Mackey, Steamboat Springs, Colo. In the motor forming the subject of the patent obtained by this 'inventor there is a rotor having peripheral blades and mounted on a hollow shaft having a slide valve, controlling openings in the hollow shaft and in the hub of the rotor. An auxiliary casing is mounted on the shaft at one side of the. rotor through which the motive fluid passes to the exhaust. SPARK PLUG.—W. S. Witter, Toledo, Iowa, in this invention the improved plug consists of a case cylindrical In form and provided with means for engaging an engine cylinder and having a plunger acted upon by the compression and moved in one direction thereby, and in the opposite direction by a solenoid coil of which the plunger forms the case. Railways and Their Accessories. RAIL JOINT.—Arthur F. Hall, 180 Crescent Road, Toronto, Ontario, Canada. Mr. Hall's invention relates to rail joints, and it has for its object to provide one which distributes the strain and provides a secure and substantial joint, presenting a smooth and continuous surface to the wheels. Another object is to provide a rail joint which will protect the ends of the rails. The accompany- ing illustration presents a side elevation of the invention. The neighboring ends of two rails are indicated by the dotted lines midway the saddle members used with the joint and shown in position. The saddle in connection with the heads of the rail presents a smooth and continuous surface to the wheels, and as the wheels pass over the saddle the strain on the plates is distributed through the length of the saddle, thus greatly reducing the possibility of fracture of the parts. GRAIN CAR DOOR.—J. C. Dobie, Onawa, Iowa, and J. L. Robb, Amistad, N. Mex., care of E. M. Hoover, 808 N. Adams Street, Carroll, Iowa. Among the various provisions of this invention are; To provide in a car a door to preserve the thickness of the wall of the car when the door is open; to provide a door and frame to prevent warping or disarrangement of the door to permit leakage to pass the same; to provide a holding frame for a door to maintain the latter in locked position; to provide a plate-metal sill to support the door and form a guiding track therefor; to provide a door to prevent obstructive lodgment of articles behind the door when the same is closed; and to provide a chute in said door for the handling of grain or flowing freight. RAILWAY RAIL AND TIE FASTENER.— J. S. Shoff, 1015 E. 11th Street, Chattanooga, Tenn. This invention is especially adapted for use with reinforced concrete ties. The object is to provide a device which will easily and securely hold the rail in position on the tie. Another object is to provide a means which is cheaply produced and which will consist of few parts, thereby lessening the cost of such devices in railroad constructions. SPIKE HOLDER.—J. M. Powell, Los Gatos, Cal. The object here is to provide a holder, having parts thereon for engagement with a -tie plate on rail chain and another portion for engagement with the web of the rail, the holder when in normal position being in contact with the head of a spike, whereby the spike is held against loosening and the danger of spreading rails is obviated. RAILROAD TIE.—J. F. O'Neill, 159 East Front Street, Trenton, N. J. An object of the inventor is to provide a tie, preferably made of concrete. which tie is composed of a series of parts flexibly fastened together, two of said parts carrying the pair of rails, and so disposed that these parts will give slightly as the wheels of the train pass over the rails. Pertaining to Recreation. SWING.—G. D. Tucker, Meridian, Miss. The oscilating motion of this swing traverses the support for the swing over the ground. An object of this invention is to provide a support rotatably supported on suitable rollers, with means for driving one or more of said rollers by the swinging action of, the swing, so that the device as a whole will over the ground, and if desired, about a common pivotal point. Another object is to provide means so that the swing may be moved while the device as a whole remains stationary on the ground. Pertaining to Vehicles. COMBINED SE CTIONAL TIRE AND WHEEL RIM— Frank M. Henry, 222 Mc-Dougal Street, Brooklyn, New York, N. Y. Some advantages over- other tires. in this invention, are : -L In of puncture it is not necessary to stop” and repair, as puncture of one ball will not injure any other part of tire and one can continue to one's destination or can repair at once in a short time. 2. A tire blow-out while going at high speed has caused the loss of many Jives and the wrecking of machines. This will not be the case if one of these balls blows out, as the rest of the tire will not collapse. 3. Requires no pumping up. 4. There is no necessity of having a tire chain to prevent slipping. 5. Skidding has been brought to a minimum. - 6. Any injured part can be replaced without tools. 7. The small cost of a section of this tire in comparison to a new one of any kind.- 8. If the saving of a life is the only thing to be considered, it would alone be worth many times the cost of any other tire. Life is worth the price of a sectional safety tire. No one knows when one will be running at high speed and a tire “blow-out” which will wreck the machine and perhaps cost owner and friends their lives or broken limbs. 9. The inventor will sell one-half interest in this patent to further its progress and will take out patents in four European countries. A side view of a wheel' with -sections of the tire in position is shown herewith. Note.—Copies of any of these patents will be furnished by the Scientific American for ten cents each. Please state the name of the patentee, title of the invention, and date of this paper.