USRE6840E - Improvement in electro-magnetic machines - Google Patents

Description

No. MEMO @wma-Lied om q) x97@ J. RIDDER. ELBOTRMAGNE'I'IC MACHINE.

UNITED STATES PATENT OFFICE.

JEROME KlDDiR, OF NEW YORK, N. Y.

Snccilif'ation toimiug part ol' Letters Patent No. 93,05, dated August lll, ltitl; lit-issueNo. 6,840,1lnt1-d January 4, 1870; application tiled November 1,1873.

To all w/om it may concern.-

Beit known that. l., JEROME Kin1 na,of the city, county, and State of New York, have invented certain new and useful Improvements in Electro-Magnetic Machines; and Ido hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompauyingdrawiugs, forming part of this specification, in which-` Figure X is a plan view of machine with my improvements, having the covers removed. Fig. X is a vertical longitudinal section of the same. Fig. X" is an inverted plan, showing the connections of the different circuits. Fig. Xmcxhibits a modification ofthe vibrating arniaturewhich constitutes one of the features of my invention. Fig. XW is a face View of a movable hanimerhcad or piece to be used on the vibrating armature.

My 'invention consists, first, in intcrposing a helix into the primary circuit of au electro magnetic machine, in addition to the helix used for the principal -prirnary circuit, said additional helix'being for the purpose of re ducing the power of the induced currents by its oice ol reducing the primary current, by acting as a resisting medium to the same. It also consists in arranging a vibrating arma` ture (which, by its oscillations, breaks 4the primary current,) in such a manner that the end of the hammer in its oscillations will pass by the end of the iron electromagnet, that attracts it wit-hout striking said magnet, so that there will be no impediment to the synchronous regularity of the interruptions.

My invention further consists in a point for connection with spring to close the batterycircuit, so arranged that the alternate connection by the vibrating spring can be changed to apermanent connection ofsupportto shorten the spring, and so vary, in a greater degree, the rapidity or slowness of the vibrations or oscillations of said spring.

My invention consists, further, in having three or more coils of three or more different lengths and thicknesses of insulated wire with an electro magnet, and with movable magnet or a movable closed circuit, as a power-ad juster, so as to have a more desirable varia tion ofthe qualities ofthe currents developed.

My invention also consists of a method of supporting the helix by clasping the coils of thicker wires at or near one end of said helix, thus providinga convenient and proper support of c0ils,whose electric powers are varied by a movable closed circuit.

'I o more fully illustrate my invention in diagram X,Ais a system Vof helices of four coils of wire. B is a clasp of wood, but may be ofany suitable material'. Bcingitselftlxed, it supports the helix altogether at or near one end by clasping firmly the coils of coarse wire Y, which have their longitudinal hollow axis snugly iilled with the iron wires (L composing the electro-magnet; D, a hollow cap of sheetiron, driven on the end ot the wires. D, Fig. X', is another form oi' the cud ofthe electroinagnet C, when the cap D, in' Fig. X is omitted; E, a hammer, fastened to F, an oscillating spring; G, a metallic support offastening of the spring; H, a" metallic rest, with a platinum pointed screw, I, and a metallic screw, J; K, a metallic support to L` a platinumpointed metallic screw; M, a metallic standard. N and O are metallic pieces, with sawcuts in top,which pieces pass through the side of the box, connect Vwith the Wires N' O' underneath. P is a metallic part passing through the box, and connecting with the. wire W underneath. R R' R R'" RW are also metallic posts or parts, passing through the box and connecting with wires underneath. The wire N' connects with the first end 1 of the primary coil of wire in the helix. The Wire O' connects with Rand K. YV is awire, which connects P with G.

1 is the first end of the iirst or inner coil of the helix, for the primary current, which wire is insulated, and after traversing with convolutions the length of the helix and back again, appears at 2, and is thence continued and joined with the metal 1t". 3 is the first end of a coil of finer wire, joined with the wire 2, and after passing with its convolutions the length of the helix, and back again, appears at et, and is thence continued and joined with R". 5 is the first end of a still smaller insulated wire, joined also with 1 and after passing with its convolntions twice backward and forward nearly the whole length ot' the helix, appears at (i, and is joined to PJ. 7 is the first end of a still incr coil of insulated wire, which,

aller passing with ils ccnvolntous several times the length of the helix, appears at 8, and isjoined to RW'.

".l is the knob on the end of a copper tube, T, which closes over the series of coils A, and is adjustable longitudinally to vary the power o1" the induced currents. U is a wire, connecting VIt and O and K. V is a wire, connecting M and Il.

The machine operates thus: The plug S, closing with l and It", the screw L, turned lo close l( with M, and the screw I touching the spring F; the screw J turned back so as not to touch this spring when it oseillates; the battery being connected with ils positive pole at N und its negative at O'.

lt will be seen that the positive current or influence from the battery traverses, enters the inner helix of coarsest wire, and coming out at 2, again enters the Helix wire 3, and comes out at i; thence passes along the connected metallic mediums lt, S, fl), \V, G, F, l, ll', V, M, L, l, U and O', and thence lo the negative of the battery.

lhe induced currents on the coils of wire, as is well li'nown, are produced by the interruption of the primary circuit, which interruption is caused by the magnetized ring D at traciing the hammer E, so as to draw the spring away from the screw I.

It will he seen that the hammer, in its oscillations, will not strike the ring D, but will pass within Ihccylinder formed by it, thus avoiding a jarring noise and harsh vibrations, which belong to and re not avoided in the common Vorms of elecliical apparatus. Air olier lorin of this same principle is shown and rJcognixcd in the ig. X', Where the hammer IG, though near thc magnet O, will not strike the magnet in its oscillations. Also, the harnlner could be a tube vibrating over a narrowed point or portion of the magnet.

It will befurtherseen in Fig. X, il` thescrew L be tirned so as to touch the spring F and removed lroin M, and if the screw J be turned so .ts lo bind the spring F Iirmly against the screw l, then the length ol` the oscillating portion of this spring is shortened, and makes more rapid vibrations.

It will be further seen that if the metallic plug S be removed from l. t, and placed so as to close l. t', then the primary current will traverse only the inner coil of coarscst wire, leaving out of its circuit the next added resisting coil of iiuer wire, the result of which will be to make the power of the induced currents of immense power, because oi' a better adapted proportion for the great power required in some cases. As the tubeT will not, in this latter case, cutoitall this power by being introduced, it will be seen that the arrangement to close the battery through one or more coils will better facilitate the adaptation of the power oi'eleetrical currents to the varied therapeutic-al demands oi' electricity.

Vhat i claim as new is 1. An additional helix, introduced into the primary circuit ol" an electro magnetic machine, operating substantially as and for the purpose herein set forth.

2. The arrangement of the hammer E, so that in its oscillations one end will pass by the end of the iron electro-magnet D or D', substantially as and for the purposespeciiied.

8. The additional point ol' fixture of the spring to be free or fixed, at option, as at H, constructed and operating substantially as and for the purpose herein set forth.

4. Three or more coils ol' wire oi' diifcrent length and thicknesses, in combination with the eleetromagnet C, with the tube T or its equivalent, and with the metallic paris R R R", &c., substantially as and for the purpose Set forth.

5. The clasp B, supporting the helix` in the manner described.

JEROME RIDDER, M. D.

YiVitnessesz '.l. B. Moslima, O. D. MUNN.

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