AUTOMATIC SWITCH.-JOHN L. POLK, Me· nands, Albany Co., N. Y. This automatic switch is for use in controlling electric currents, the switch in one of its movements being automatic, and also sluggish in its action. Morp particularly stated a switch is provided having a lever movable by hand in one direction and movable in the opposite direction by the action of a spring and against the cushioning pres· AUTOMATIC SWITCH. sure of a dash pot for the purpose of retarding the movement or rendering it sluggish, the idea being that when the switch lever is in one of its extreme positions it closes one electric circuit and a fcw moments afterward opens that circuit and automatically closes another. A plan view is shown herewith complebe, the lever occupying its extreme position to the left and closing one of the circu its. COLLAPSIBL E HAN DL E CAN .-E. G. CA· NEPA, Portico Vittorio Emanuele, 4A, Genoa, Italy. This invention relates to metallic vessels and cans, the object being to produce an article at cheap price and easily carried by minimizing the space occupied in packing. These results are obtained by forming th,” mouthpiece for pouring the liquid contained in the vessel in the shell of the same, and further by providing a yielding handle which, in packing, can be brought in contact with the body of the can, thus avoiding any projecting part. Of Intel·est to Farmers. FOLDING HAY KNIFE.-L uT HER L. CARR, Chalmers, Ind. The object in this improvement is to provide a novel construction of knife in which the blade can be conveniently folded into the handle so that when the knife is not in actual use, the blade will be housed within and protected by the handle, the han· FOLDING HAY KNIFE. dIe and the blade being so formed that the former operates IS a stop to limit the opening movement of the blade at the proper point and the handle being provided with hand-holds for convenience in manipulating the knife, means being provided for holding the blade to the handle both in the opened and closed portions of the blade. The accompanying view shows the knife with the blade in position for use. GRAIN S EP A R A '1 0 R.-CHARLES G. BRANCH, 1019 North Mosley Street, Wichita, Kan. The purpose of the invention is to provide a device wherein all vibrating parts are eliminated, the grain being separated by car- rielS and the like, thus dispensing with nOise, and eliminating the great strain on the mechanism of vibrating or reciprocating parts. A ve r ti cal longitudinal section Is shown i the engraving. The toothed wheels are very necessary since they thoro uglly beat and shake up the straw so that the grain drops out of the straw. Screens and wheels work to secure cleaning action, thoroughly separating grain and straw, so that only a small portion of grain is passed out through the stack. BALE CARRIER.-EDWARD H. BOEHME, R. F. D. No. 2, Rankin, Ill. A front presentation of a bale carrier patented by Mr. Boehme illustrates this article, and the inventor's object is to provide a simple, inexpensive and easily operated fork especially designed and adapted for lifting material, such as hay, “traw, and the like, in bales, which will firmly hold, during elevation and transportation, a plurality of bales, and which may be easily and quickly engaged with and released from the bales. The levers cannot be disengaged uutil the trip rope is pulled. Of (ene.. al Interest. HOD STAND.-SAMUEL H. M OO RE , Phoenix, Ariz. This invention is an improvement in hod stands for use in holding hods for carry· ng brick or mortar, and the invention has for an object the provision of a novel construction of folding hod stand which can be adjusted to suit any size of mortar or brick1 hod and hold such hod when applied to the stand at any desired angle. In practice the stand may be made of wrought iron of suitable size and dimensions to give the necessary strength for supporting the hod and the device will be found useful for the purpose for which it is designed. The engraving shows a perspective view of the stand as in use, the hod being in position. FOLDING SCAFFOLD.-E. ZAHN, Rhodesia Park, Norwalk, Conn. Mr. Zahn's invention relates to folding scaffolds for general use, his more particular purpose being to provide a simple, strong and efficient scaffold suitable upon the exterior faces of b u il d ing walls and 48 a SCIENTIFIC AMERICAN Novcmbcr 25, 1 911 adaptl'd to be let out and drawn through windows or the like. In order to erect the scaftold aK shown in the accompanying illustration. the device is let out through the window, so that the window bar lodges against the inner face of the wall upon opposite sides of th(, window. To take the platform within the building, the floor consisting of boards (shown in dotted lines) is first removed and taken inside. The bar at the top is next grasped and pulled over practically through the window. Honsehold Utilities. IIgAT COOKgR-A. REUBOLD, 1120 Fox Street, Bronx, New York, N. Y. This invention provides an airtight receptacle in which food may be placed, and means for closing this receptacle so that juices and volatile parts of the meat will be retained, thereby preservin, the flavor, preventing shrinkage and increasing its value as an article of food, the ue fOt' which the devil'” is best adapted being the cooking of bone hams and pork shoulders, so as to preserve their flavor, ju..ees and aroma. lachines and Inechanical Devices. V ALVK-J. D. HOBERTSON. 219 South Seeley Street, Chicago, 111. In this case the valve head is 0'[ thimble form and fits .ver and is secured to a cylindrical float filled with huoyant material, as cork, to float the >!lve in water. The valve is movably confined an<i guided in a cage and means prov'de to limit the drop of the valve from its sea t. It is especially designed for tanks, to prevent overflr of water, without interfering with the circulation of air and steam, the valve obviously rhng and :)Ping forced tight to its seat hy the rise of the liquid level. BLUE PHINT WASHING AND DHYING JCHINK-OSCAII Hoors, Grove Street and Chicago Avenue, Elmhurst, L. 1., New Yoek. A sectional elevation of this machine is repeesented in the engraving herewith. The inventor pt'ovides a machine having two endles: halts, having sprocket olwnings at their sides, BLUE lRIN' WASHING AND DRYING MACHINE. which are dispos(d against each other, and which run over rollers with sprocket teeth jOllrualed in a easing containing tanks, and a compartment for respectively washing and drying the hlue prints. ''he prints are conveyed between the belts through the machine, and are introduced and removed at points outside tbe casing where the belts are spaced from each other. CO MBIN ATIO N BUNG AND FAUCg'r.-!1;nwARD D. WILSOK. Box 25, Strong, Kan. This invention has reference to faucets, and it has for its object the provision of a bung having contained therein a valve mechanism for use in controlling the flow of liquid through the receptacle, and through an open- COMBINATION BUNG AND FAUCET. ing in the side of which the bung is disposed, so that when the plug is removed from the bung the valve is in position for use. 'e accompanying illustration gives a view in sectional elevation sbowinl the device attached to the side of a barrel. ''he bung is made in two sections, so that the valve member may be readily disposed in position. CYL INDEl t GlaNDING MAC HINT-ED-MOND STONE a nd WILLIAM STONE, 3510 South Wood Street, Chicago, Ill. 'rhis in ven tion relates to mechanism for grinding and dreKsing the interior surfaces of hollow cylindrical bodies, such as (ngine cylinders and the like. The invention is used in connection with an ordinary machine shop lathe, and the illustra- tion shows a plan of the lathe having the attachment mounted thereon. It sometimes tak('s hours to properly set and center a cylindel to be bored out. but by the present arrangcment it may be accomplished in a few minutes. An important feature is the orbital movement. This mnst always be positive and the grinding-who"l made to travel in the path of a true circle and doing the work accurately with all mechanical precision. Kaihvays and '.heir Accessories. CROSS T!E.-WILr,IAM K .ONES, Chase Mills, N. Y. Tbe object here is to provide a durable cross tie intended to replace the ordinary wooden tie now generally used, which can be emploYld with railroad track rails and the Ilke, with which ordinary rail-hOlding means such as spikes, chairs and braces now generally employed can be used, which tends to prevent spreading of the rails, by means of which one or the other of the rails can be raised or lowered as necessary, which can be employed on straight track sections as well as on curves, and the employment of which permits the tracks to be easily and expeditiously laid and repaired. The engraving herewith gives a plan view which shows the tie used to support a pair of track rails. Pertaining to Vehicles. HUB ATTACHING DgV!CE.-JEFFJRSON D. HOBERTSON, La Plata, Md. This improvement is in hub attaching devices for use on vehicle wheels and the like and has for an object to provide a novel construction by which the wear on the ends of the box fitted upon the spindle may be easily taken up and by whicb the nut may be adjusted to take up this wear and may be locked in any described adjustment upon the threaded tenon of the spindle and in whkh the locking devices for the nut may be released by moving the same longitudinally in the direction of the axis of the spindle. 'l'hcre is a locking bail for the hub securing nut, \hich bail has a cross bar extending radia lIy across tlc outer end of the nut in position to he graspcd in pulling the bail to unlock the nut. The (ngl'aving shows a sectional view of the device as in use. :OTE.-Copics of any of these patents will be furished by the SCIENTH'IC AMERICAN for ten cents e ach. P lease state the nam e of the pat entee, t itle of the invention, and date 01 this DaDe I.