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Publication numberUS847008 A
Publication typeGrant
Publication dateMar 12, 1907
Filing dateJun 10, 1904
Priority dateJun 10, 1904
Publication numberUS 847008 A, US 847008A, US-A-847008, US847008 A, US847008A
InventorsIsidor Kitsee
Original AssigneeIsidor Kitsee
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 847008 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

PATENTED MAR. 12; 1901.





c U PATENT ISIDOR irrrsnn, or PHILADELPHIA, rniuisrnvanra.


No. 8d7,008.

Specification of Letters Patent.

Patented March 12', ieo'r.

Application filed June 10,1904. Serial No. 211.976.

My invention relates to an improvement,

in converters or transformers. lts object is to increase the efliciency of the inducingpr transforming current. V. a

As is well known, a transformer, such as converter or induction coil, consists of the primary adapted to be connected to the source of current to be converted, of the soft-iron core, and of the secondary adapted to be connected to consuming devices, the

soft-iron core being either of solid or laminated construction, serving only for the purpose of increasing the induction by magnetic flux. 1

In my experiments, first with telephonic transmission and afterward with transmission of power, 1 have found that if the softiron core consists of a coil of soft-iron wire, the individual conyolutions insulated from each other, this coil acts in the same manner as the secondary of a converter acts that is, currents of electricity are generated therein by induction.

Referring to the drawing, in which Figure 1, Fig. 2, and Fig. 3 are diagrammatic views of converters embodying my invention in dill'erent iorms-- A is the converter as an entirety, of which E is the iron core, composed of a series of convolutions ofinsuated wire in the form of a coil. C is the primary, and D is the sec ondary.

in Fig. 1 the converter embraces the three instrumentalitiesto wit: the primary C, the secondary l), and the iron core B. In Fig. 2 the converter'consists only of the primary C and the iron core B, which may he used as a secondary. Fig. 3 diil'ers from Fig. 1 only therein that the secondary is wound around the primary. In other respects the figures are alike. if the primary (3 is connected with the interposition of a mierophonic transmitter to a source of current, impulses in accordance with the speech to be transmitted are induced, as is well known, in the secondary D and (an be heard in a telephonic receiver connected to the terminals of this coll.

As said above, my experiments have proven that if to the terminals of the coil B a telephonic receiver is connected the speech can be heard as plainly as in the receiver connected to the terminals of the wire D. In other words, the core B, which till now only fulfilled the ofiice of a magnetic core, may also fulfil the office of the secondary of an inductorium.

vl. do not deem it necessar to enumerate all the uses to which such an arrangement is applicable, and it sufices to say that with the proper arrangement the induced current vmay be taken either from the iron wire constituting the core alone or from the non wire and the Wire representingthe secondary of the inductorium.

I have so far only taken into consideration the function of the third or magnetic coil as a substitute or auxiliary to secondary coils; but to persons versed in the art it is evident that with the aid of such coil a converting or inductance (.Oll may be regulated in a manner so that either the resistance due to hysteresis or to Foucault currents may predominate, and this can readily be accomplished by making the magnetic or core coil either of very coarse wire with a few turns 01 of very fine wire with a comparative large number of turns.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A device of the class described consisting of three coils, one coil adapted to be con nected to the primary current, and both of the other coils adapted to be connected to consuming devices, one of the last-named two coils acting as the core for both of the name, in the presence of two subscribing witnesses, this 7th day of June, A. D. 1904.

lSlDOR Kl'l SEE. Witnesses:


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Cooperative ClassificationH01F27/38