The U.S. Patents of Nikola Tesla

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In the drawings, Figure elevation of the lamp with the case section. The lowerpole-pieces,m'n\ arebrought near together, tapering toward the armature as shown Figs. an elevation, partly section, the lamp at 30 right angles Fig. and which are just the middle between the jaws ce. is a detached section illustrating the connection of the spring the lever that carries the piv- 35 ots the clamp, and Fig, diagram showing the circuit-connections the lamp. Fig. In the drawings, Fig. Thejaws ee are fastened the inside the tube so that one little lower than the other. 160,574, filed by March 30, 1885, have shown and de­ scribed lamp having two magnets, the io main and shunt circuits, respectively, ar­ mature-lever, and feed-mechanism connected to the armature-lever. 55 1.Tesla, Smil- jan Lika, border country ofAustria-Hungary, have invented certain Improvements Elec- 5 trie-Arc Lamps, which the following a specification. Fig. which are the 95 jaw the top plate, This plate with the jaw, preferably cast one piece and screwed the side columns, that extend up from the base partly balance the overweight the moving parts spring, s', 100 . Fig. ("No model. My invention will understood with refer- 25 ence the accompanying drawings.) To all whom concern: Be known that Nikola. this way com- 50 paratively small number convolutions is sufficient produce the required magnetism, besides greater surface offered for cooling off the wires. sec­ tion the clamp about full size. The 80 object this provide greater opening for the passage the rod when the same is released the clamp. 171,416. NIKOLA TESLA, SMILJAN LIKA, AUSTRIA-HUNGARY, ASSIGNOR THE TESLA ELECTRIC LIGHT AND MANUFACTURING COMPANY, RAHWAY, NEW JERSEY. The bear­ ings are carried lever, one end of which rests upon adjustable support, of the side columns, the other end being con­ nected means the link the armature- 90 lever The armature-lever fiat piece of iron shape, having its ends curved so as correspond the form the upper pole- pieces the magnets and hung upon the pivots Fig. sectional plan the line Fig. Mypresent invention consists some modi­ fications and improvements upon the de- 15 vices shown the application referred to. These jaws are arcs circle the 70 diameter the rod and are made some hard metal, preferably hardened German silver. Serial !No. In another application, No. The upper pole-pieces, the magnets are curved, indicated the drawings, Fig. 85 find this disposition the best. The clamp sup­ ported bearings tv, Figs. This has the advantage re- 75 duce greatly the wear and corrosion the parts comingin frictional contact with the rod, which frequently causes trouble. also make the guides through which the carbon-holding rod slides, the same material. In present invention further provide means for automatically withdrawing lamp from the circuit, cutting out the same, when, from failure the feed, the arc reaches 20 abnormal length, and also means for auto­ matically reinserting such lamp the circuit when the rod drops and the carbons come into contact. and The object this taper concentrate the greatest amount of the developed magnetism upon the armature, 60 and also allow the pull exerted always upon the middle the armature This armature piece iron the shape a hollow cylinder, having each side seg­ ment cut away, the width which equal 65 the width the pole-pieces m' The armature soldered otherwise fast­ ened the clamp which formed a brass tube, provided with gripping-jaws e, Fig. represents the main and the shunt magnet, both securely fastened the base which, with its side 40 columns,S preferably cast one piece of brass other diamagnetic material. 335,787, dated February 9,1886. The magnets and are made very flat, so that their width exceeds three times their thickness, even more.United States Patent Office. ELECTRIC-ARC LAMP, SPECIFICATION forming part Letters Patent No. the magnets are soldered otherwise fastened the brass washers disks Similar wash­ ers, fiber other insulating material, 45 serve insulate the wires from the brass washers. Fig. a sectional plan the line Fig. Application filed July 13,1883