A Change Making Machine.—This machine has holders for stacks of coins, and an electric motor which reciprocates a carriage to which fingers are pivoted for ejecting the lower coins from the stacks, pivoted plates lying normally in the paths of the fingers to prevent them from engaging their respective coins, electro magnetic mechanism being provided to shift any particular one of the pivoted plates out of the path of its corresponding finger to permit the last to eject a coin. The patent, No. 1,007,167, is to Everett A. Wickline of Olympia, Wash. Baked Beans as a Hair Tonic.—We have always understood that, as a diet, pork and beans was “filling” but it remained for a California inventor, Thomas H. Bartlett, to find out a few years ago, that it had the property of “filling” the hair into the head and to cause that already in place to “stick to “ its support. In his patent, No. 920,902, Mr. Bartlett describes his hair tonic as consisting of pork fat, bean oil and other specified ingredients, and describes with great particularity the cooking of a very nice edible dish of baked beans preparatory to completing the tonic. Thus in the description forming part of his patent be says: “I take three cups of common white beans and three pounds of salt pork. The beans are par-boiled, and then boiled with the pork for eight hours, and then covered tight and baked for twelve hours.” With brown bread that would make a pretty good Saturday night tea in Boston. An Umbrella Useful with Big Hats.— An umbrella that should be popular with the ladies wearing large hats is shown in a patent, No. 1,008,456, to Leo C. Bail', of York, Pa. The stick or staff is in sections which include parallel links so arranged that while the handle portion of the staff may extend up in front of a big hat, the links will extend back over the hat so that the center of the canopy of the umbrella or parasol will be about over the center of the hat, although the parallel links may be adjusted into alinement with the rest of the staff. 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. SELF-SWITCHING ALARM.—B. Uhlmann, 72 Planderville Avenue, Garfield, N. J. This invention relates to burglar alarms for doors and itle like, and its object is to provide a new and improved self-switching alarm, arranged to sound an alarm on retracting the key-controlled locking bolt of the door lock, and adopted to be normally held in a set position to permit of opening and closing the door, say during the day, without ringing the alarm. ELECTRICAL PROGRAM CLOCK.—Gott-lieb P.. Mildb, Sweet Home, Ore. This invention relates to time-controlled electric alarms for periodically sounding alarms, and its object is to provide a new program clock for use in schools, railroad stations, hotels and other places, and arranged to periodically sound alarm.s, to economize in battery power, and to provi<Je a mechanism of comparatively few parts not liable easily to get out of order and not requiring delicate adjustment of tlK' parts. Use is made of an actuating and contact-making number turning in unison with the minute hand of the clock and controlling periodically another contact-making member for closing a circuit to sound an alarm. The illustration is a face view of the clock. Of Interest to Farmers. MILK PAIL COVER.—W. R. Butner, Topaz, Cal. As soon as milk reaches the lowermost row of holes after a little has accumulated in the cup it is drained off from its upper surface and trickles through into the pail body, gradually filling the latter. Any dirt in the cup cannot get into the pail, being retained in the cup, as it cannot pass readily through the holes. If the dirt happens to be of the kind which readily sinks into the milk, it will drop into the bottom of the cup and there remain. The cover can be disengaged and lifted gradually to different angles, thus draining the milk out of the cup and leaving the dirt therein. This requires but little practice. The invention is shown herewith as applied to the pail. The cover may be made of metal and of proper proportions to fit the standard pail. STEERING DEVICE FOR TRACTION ENGINES.—W. D. Miller, en re of Saco Mercantile Co., Saco, Mont. In the present invention the improvement relates to traction engines and similar machines used for drawing gang plows over a field, and the object is to provide a new steering device for such machines, whereby the machine is automatically guided across the field in a straight line. Hardware and Tools. WRENCH.—C. G. Youngquist and C. F. Youngquist, 205lh Washington Street, Portland, Ore. This improvement pertains to wrenches, and it has for its object to provide one -having an eccentric journaled to a movable jaw, with a worm mounted to rotate on the eccentric, so that by rotating the eccentric the worm may be moved into or out of engagement with the rack teeth on the shank of the teeth. SELF HEATING SOLDERINGi IRON.—A. J. Whitbeck, New Britain, Conn. The object of this inventor is to provide a soldering iron having an improved construction and arrangement of the burner and means whereby the preliminary heating of the same is accomplished. A number of heads of different sizes and shapes are provided and they may be used interchangeably so that the tool may be instantly adapted to the character of the particular work to be done. PIPE WRENCH.—W. L. Bessolo, P. O. Box K, Spring Valley, III. This invention comprises among other parts a handle and a. jaw pivotally conn cted therewith to permit a limited oscillating movement of either, the former having a shoulder to limit its movement in relation to the latter in one direction, and a forward projection protruding above a pivot of the jaw to limit its movement in the opposite direction. It is simple in construction, economical in cost and efficient in use. DIE HOLDER.—J. W. Clark, 707 Ashland Avenue, Munice, Ind. This invention provides a simple but powerful device for clamping a die, so that it will be held positively against movement in any direction, and wherein the holding means may be firmly locked in clamping position, without possibility of accidental release by any means. ASH SIFTING SHOVEL.—C. F. Hoffman, care of Tuttle, McArthur&Dunnebacke, 501 Hollister Building, Lansing, Mich. Among the principal objects which the present invention has in view are: to provide an apparatus wherein the ash and partly burned coal are separated in the shovel; and to provide means for lifting the shifting device above the bottom of the shovel during sifting. WRENCH.—F. C. BotWright, 1825 Bain-bridge Street, Philadelphia, Pa. This improvement pertains to wrenches, and has reference more particularly to a device of this kind, comprising a pair of relatively movable jaws, means for adjusting the same, and means whereby the jaws are released from engagement with an object between them when the wrench is turned in one direction. PNEUMATIC HAMMER.—V. E. LANE, 150 South Portland Avenue, Brooklyn, N. Y. Mr. Lane's invention relates to pneumatic hammers, and has for its object to provide a detachable nose piece carrying the rivet set, or equivalent tool, and so arranged that the nose pieee, when removed from the barrel, carries with it the rivet set, while the last is in turn detachable from the nose piece independently of whether the latter be mounted upon the barrel or not. WIRE STRETCHER AND SPLICER.—M. W. Cornett, Miami, Texas. This invention is for use on fence wire or for tying wire around bales and the like. Use is made of a handled winding shaft, having an eye and an arm, in which the winding shaft is mounted to turn, the arm having at its free end a hook for engagement with 3. loop on one end of a wire when splicing two wires, or for engagement with a fence post when stretching a wire. SAFETY RAZOR.—A. Zilbersher, 1186-Madison Avenue, New York, N. Y. The invention refers to a new and useful improvement in the art of safety razors and more particularly the invention involves a retainer or cap plate used on safety razors, the construction of which especially adapts it for use with blades which have been worn down more or less after honing or stropping. SHADE ROLLER.—C. K. Snavelt, 178 Washington Street, Bloomfield, N. J. The aim of this inventor is to provide a roller arranged to insure an easy and smooth running of the roller for winding up and unwinding the shade cloth, to securely' lock the roller in stopping position and to permit convenient assembling of the parts and securely holding the same in position. CURTAIN STRETCHER.—J. O. Holm-qtjist, 3318 Greenwood Terrace, Chicago, Ill. This invention relates to stretchers for curtains and analogous articles, and refers more particularly to a device of this class which comprises a frame including jointed bars, a brace member movably associated with these bars, and means whereby the bars, when extended, are constrained to assume positions at right angles with respect to the brace member. SASH FASTENER.—I. G. French, 24 Winter Street, Orange, Mass. The object here is to provide a fastener which can he manufactured inexpensively from any suitable material, such as cast metal, which can be December 2., 1911 SCIENTIFIC AMERICAA 583 manipulated without difficulty, by means of which the window sashes can be securely locked against accident or unauthorized opening, and which automatically locks when the window is closed. Heatin::; and Ligliting. BURNER.—L. M. Hasbrouck, care of Continental Hotel, Broadway and 20th Street, New York, N. Y. An object of this invention as to provide a form of burner adapted more especially for use in an oil lamp, so constructed and arranged that cold air is supplied to not only the bottom part of the incandescent mantle, but is also .supplied to the un-burned carbonized gas at the upper portion of the mantle. OIL BURNER.—W. Mc K. Burns, 228 East 13th Street, Concordia, and R. W. Burns, Cherryvale, Kan. Tihe object in this case is to provide a burner adapted to use oil as fuel for heating. The burner has a combustion chamber adapted to receive oil therein, the oil being ignited and diffused in a manner adapted to generate heat suitable for various purposes. It is particularly adapted for cooking or for heating rooms. Household Utilities. IMITATION FUR RUG.—S. E. Creasey, Alfred, Maine. The accompanying engraving gives a view of a rug constructed and arranged in accordance with the invention of Mr. Creasey. Among the principal objects which the inventor has in view are : To provide an artificial rug imitating in color, form and nap an animal's skin. trimmed, orna mented and arranged in simulation of rugs formed from natural skins, and to produce an article which is economical and durable. Where the rug is to be used as a floor piece, and where further illusion is desired, the head Is mounted, a papier-mache or other suitable cranium being provided. This cranium is provided with teeth and eyes, as in rugs of ordinary constructions. GAS LOG RE'ST.—E. S. Allen, 517 West 134th Street, New York, N. Y. This improvement pertains to log rests used in fire places and the like, the more particular purpose being to provide a type of log rest suitable for use in connection with gaseous fuel, and having a so-called “knock-down” construction whereby the rest may be readily folded and unfolded for convenience in packing and shipping. SIPHON FLUSHING APPARATUS.—J. J. Meyer, 366 Lenox Avenue, New York, N. Y. The aim in this case is to provide a siphon flushing apparatus for flushing tanks, arranged to insure the emptying of the water of the tank from above the level of the water in the tank, and dispensing with submerged valves, thus completely avoiding all leakage and waste. Of General Interest. WELL CASING.—B. U. hiester, Grand Ridge, Ill. The accompanying engraving shows a perspective view of a number of units secured together in one manner. The invention relates generally to well casings, and more particularly It is directed to an improved means for holding together the units described and claimed in Letters Patent No. 1,001,523, granted to Mr. Hiester. The aim of this inventor is to provide a means for securing in operative position a number of well casing units set forth in the above application, the said securing means being preferably vertically extending rods which may occupy a variety of positions with respect to the units. DISPLAY DEVICE.—W. Weller, Bonduel, Wis. This invention refers generally to devices which are adapted for use in displaying articles of furniture and more particularly it involves one especially intended to co-operate with the parts of a bed in order that the parts may be held in upright position and convenient for inspection. SHIP OR VESSEL.—G. E. Ei.ia, Hotel de Crillon, Place de la Concorde, Paris, France. This invention relates to ships or vessels and is particularly applicable for use in connection with vessels employed in naval warfare, the object being to preserve the stability of the same in the event of their being subjected to the effects of a submarine explosion. METAL SPRING.—L. L. B. Denis, 135 Boulevard de Menilmontaut, Paris, France. In this invention the spring is formed from wire or metal rod of any convenient cross section bent on a flat or conical surface to form the outline of a conventional star, the radiating of which are subjected to torsional stresses when the exterior and interior supporting planes are moving together or apart. STAMP MILL SCREEN.—D. C. En Earl, Rollinsville, Colo. This invention consists of a screen to be used in the mortar of a stamp mill employed for the wet crushing of the ores of gold and other precious metals. The screen is shown in position in place on the mortar of the mill. The invention consists broadly in the number of bars arranged adjacent one another but spaced apart so as to provide openings therethrough, which openings gradually in crease in size to prevent the screen from becoming choked as the crushed ore is washed therethrough. The screen sifts the ore after it has been crushed and delivers it to the amalgamating plate or table in a sufficiently powdered condition to insure retention by the quicksilver with which the plate is covered. PROTRACTOR.—J. Goodfellow, Cheever, N. H. 'This invention relates to a protractor of the type in which the various angles are designated on an arcuate periphery, whereby they may be transferred to any suitable work, and which is further provided with a supplementary arc or curve for determining various points and aiding in the solution of various geometrical problems. DAM.—J. C. Whbelon, Garland, Utah. The invention relates to hydraulic engineering, and its purpose is to provide a dam having a collapsible crest, which can be raised or lowered at will to permit flood waters to be safely discharged over the dam with the utmost safety to the dam and all the head works and controlling works connected with the waterway. GLUE MELTING PROCESS.—C. M. Zimmerman, 221 West Third Street, Cincinnati. Ohio. In operation a converter is placed within the soaking tank and the glue put into the converter, and as much water afterward added as the glue can take up in passing into a jelly form. The vessel is then seated within the melting apparatus, where the glue is rapidly melted, and drips through the perforated bottom of the converter into the collector and then runs out through the discharge pipes; thus soaking and melting are performed without transferring glue from one vessel to another. SAMPLE BOOK.—C, Green, 394 Canal Street, New York, N. Y. This invention relates to a sample book which is adapted to display textile fabric, wall paper or the like of various colors and qualities, both in their flat, smooth condition and in a ruffled or rumpled condition, and in full yard length, so that every possible characteristic may be exhibited. FIRE EXTINGUISHER.—C. H. Driscoli., care of U. S. Smelting Co., Midvale, Utah. This extinguisher is arranged to utilize the tank containing the solution and the acid receptacle as a reel for the hose, the nozzle of which normally engages a lock for holding the reel against rotation, whereby the acid bottle is held suspended in the tank until the latter is unlocked or removal of the hose and the •tank is rotated on unwinding the hose. DEPTH GAGE.—F. 1. Walker, Babylon, L. I., N. Y. In this gage the keepers are set ba'ck a substantial distance inward from the working edges of the head, and the metal at these edges brought well to the blade so that the head gage will rest evenly substantially throughout on the surface, to which it is presented, and will not be raised therefrom when the head is laterally tilted. Machines and mechanical Devices. NEEDLE' THREADER.—W. J. Rogers, Box 567, 307 Madison Avenue, Plainfiel<!l, N. J. In this invention the improvement relates to needle threaders, and it has for its object to provide one having a handle, with a guideway in which a member carrying a plunger is adapted to travel, a member carrying a thread catcher being pivoted to the handle, and having means for reciprocating member carrying the plunger. Another object is to provide a spacing arm adjustably mounted on the handle adapted to abut against the bottom of a needle bar for holding the plunger in aline-ment with the eye of a needle. The view shown in the engraving gives- ,the invention in position for service. SLUBBING OR ROVING FRAME.—J. D. Irving, 514 E'dgmont Avenue, Chester, Pa. The engraving herewith shows a side elevation of a roving frame provided with auxiliary controlling mechanism, parts being shown in section. The invention relates to spinning. and its purpose is to provide improvements in frames whereby -the operator Is enabled to quickly regulate 'the tension of the roving or slubbing without knocking off and stopping the machine or without danger of injury to the hands. For this purpose use is made of an auxiliary tension regulating mechanism, controlled by the operator and connected with the cross shaft, the mechanism extending to the front of the roller beam to be within convenient reach of the operator, to enable him to swing the shaft out or into gear. COPY HOLDER.—H. Utsch, Little Falls, Minn. The object of the invention shown in the engraving is to provide a simple, economical and easily operated device which may be readily applied to and detached from a typewriter carriage, and which will travel with the carriage, will advance the copy synchron- copy holder. ously with the advancement of the writing paper, and wherein the indicator of the typewriter carries the indicator of the copy holder, so that the two indicators always indicate on the copy that portion of the one that corresponds to the same portion of the other. The illustration represents the improvement in place on a typewriter. Prime Movers and Their Accessories. ROTARY ENGINE.—G. T. Cunningham, 1049 Margaret Street, Shreveport, La. The object of the improvement is to provide an engine wherein oppositely arranged blades are provided and wherein the motive fluid is permitted to act upon the blades during 180 degrees of their travel before exhausting, together with a simple and easily adjustable operating mechanism. CARBURETER.—M. Weiwoda, care of Atlantic Yacht Club, Sea Gate, Coney Island, New York, N. Y. This invention has reference to certain improvements in carbureters for forming explosive mixture, and more particularly to that type of carbureter in which a liquid fuel is used and which is vaporized and mixed with air or other oxygen-bearing gas. CYLINDER AND WATER JACKET FOR INTERNAL COMBUSTION ENGI N E S.I. Crabb, West Union, Iowa. This invention provides a jacket constructed and arranged in such manner as to avoid breakage or other damage usually sustained by closed and rigid water jacket constructions caused by the expansion of the water contained therein when formed into ice ; and provides a jacket to permit the rapid and easy separation of the same for repair or renewal