The U.S. Patents of Nikola Tesla

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Inthiseasethecommutator . The seg­ ments are held place band, in­ sulating material. - I prefer the form shown Figs. In all abo cases describ com ­ m single il,an de- v ice rtic rly ses. composed the two metallic Segments and the twoinsulating- segments F', bound together band, 0. The four seg­ ments each part, however, are secured to their respective sleeves screws g', and 70 oue edge each segment cut away, that small plates abmay slipped into the spaces thus formed. The metal segments are pref­ erably copper brass; bnt they may have a facing edge durable material—such as 60 platinum the like—where the sparks are liable occur. The collector made the same form as ' tin- commutator. means—as, for example, light springs se- , cured the bands B', respectively, and bearing against the segments—to exert light 35 pressure upon them and keep them close contact and compensate for wear.have shown slotted plate, which designed attached to 25 stationary support, and arm extending from the collector and carrying clamping- screw, which the collector may ad­ justed and set the desired position.metallic segments "EE''are the same or practically the same width extent the insulating Segments spaces the commu­ tator. 12c. The metal segments the commutator may be moved forward loosening the screw a'. Theother two, bb,areofglass 75 or marble, and they are all preferably square, as shown Figs, and that they may be. Such materials as glass, marble, soapstone may advanta geously used. and 2 30 Jit the insulating-segments both commu­ tator and collector loosely and provide some . this form the commutator and col­ lector are made substantially thesame man­ ner previously described, except that the. •For example, . T hese ers recesses filled ith *05 m ercu collector es W ith screw ot, rry rin X a isto hich com pensate for ­ pan sio tractio ercu r v tem eratu res, ich suffi- c cie tly stro ield ressu of th flu ’due: cen trifu action, hich serv binding-posts. 3,. These plates are, course, u&elul those edges 85 the segments only where sparks are liable to occur, and, they are easily replaced, they are great advantage. ro The. Any convenient means employed hold the collector that may not turn with the shaft.screws, such </, Fig. The collector secured asleeve, B', by screws and the sleeve arranged to 15 turn freely the shaft The end the •sleeve closed plate, as/, upon which presses pivot-pointed screw, adjustable in aspring, II, which acts maintain the col­ lector close contact with the commutator 20 and compensate for the play the shaft. T rts fitted oothly col­ lecto eld screw rin H ag ain tato r cases, tato revolves hile col- 10c le cto rem ain sta tio ends e coils connected bind sts ss,. theseplates arc metal, and are contact with the metal segments D D',-respectively. In,Fig. ynam o-electric achine, com *3° b atio ith tato form ith ­ d tin seg ith ­ in latin -sp aces, llecto d to rface t.w hich a electrical connection ith etal s 11 ith recesses rts T. The commutator and the collector thuspresent- 45 ing two flat and smooth béaring-surfaces pre­ vent mechanical action the occurrence of sparks, and this more effectively accom­ plished here done—that say, the interposition insulating body between 50 the separating plates segments the com­ mutator and collector— -than any other me­ chanical devices which aware. •A lthóngh show bearing-surfaces as lan rig angles axis, i rtic con­ stru tio tly odified ith ­ o rtu from tio 125 W ith confining yself, erefo re, e d ils stru ctio hich ^av show in illu tra tio tio claim as new is— 1. somewhat modified form my invention shown, form designed facili­ tate the construction and replacing the 65 parts. 5 which secure thé disk firmly the sleeve A'. In Figs, and shown the construction 90 which use when, instead solid segments, a fluid isemployed.. T segm ents increased, how ever, ore one tato used w ith sin ill ell r­ stood. The disk held place by friction . .382,945 menls arc insulating material.and collector are made two insulating-disks, S lieu etal segm ents space is each rt, correspond- 95 in size etal segm ent. bands may omitted. turned present new edges should any edge become worn use. Light springs d bear upon these plates and press those the 80 commutator toward those the collector, and insulating-strips are secured to"the periph­ ery the disks prevent the blocks from- being thrown out centrifugal action. . The insulating-segments are made some hard material capable being polished and 55 formed with sharp edges.I prefer coat them with platinum silver. The circuit line wires are led from the 40 metal segments the collector, being secured, thereto any convenient manner, the plan of connections being shown applied modi­ fied form the commutator Fig