US605194A - kitten house - Google Patents

Description

.(No Model.)

J. J. BELLMAN av G. T. RITTENHOUSE.

ELECTRIC TRANSFORMER.

,.NO. 605,194. Patented June 7,1898.

NITE

JOllN J. BELLMAN AND CHARLES T. RI'I"ENIIOUSE, OF NElV YORK,

` Anna ELECTRlC TRANSFORM ER..

SPECIFICATION forming part of Letters Patent Applicata firea'Jlme 29, 1897.

To (LIZ whom, it muy concern.- A

lle it known that we, JOHN J. BELLMAN and (HL-minas T. RITTENHoUsE, citizens ot the linited States, residing in the city, county, and State ot' New York, have invented an Improvement in Electric Transformers, of which the following is a specification.

Electric transformers have sometimes been made with circularcores of rectangular crosssection built up of iron plates around which the primary and secondary Wires have been wound by hand. In others the core has con` sisted of a coil of iron wire around which the primary and secondary wires were Wound. 'lhc primar i and secondary conductors have also been wound in a coil and iron wire wound by nand, or plates of magnetic material sectionally divided have been built up about said primary and secondary coils.

It is well known butt-joint in a ferromagnetic circult olers considerable resistance to the magnetic fiuX, and in overcoming the same additional energy is required. At least one such joint or air-gap is present in all types of electric transformers in which the magnetic circuitis composed of magnetic material not entire and continuous alongthe path of' the magnetic flux.

out Joints, laps, butts, being integral.

In the drawings, Figure l is a cross-section of our improved transformer. Fig. 2 is a longitudinal section. Figs. 3 and 4 show modilieations in the shape of the magnetic lield. Fig. shows the preferable manner of connecting the ends ot' the rings or heads or of the cylinder, and Fig. 6 shows details in larger size of the manner of making the cylinder ot segments and insulating the same.

The lield C is composed of magnetic material in the form of plates or sheets, the core being integral with the other parts, and the sheets have lnortises at 2 and 3 of the proper size and shape for the admission of the primary and secondary coils, so that the magnetic llux is free to circulate through the entire field without the resistance due to lap- No. 605,194, dated Tune 7, 1898. Serial No. 642,879. (No model.)

ping plates that are not integral or to the presence of air-gaps.

The term field7 in this specification is to part of such circuits'surrounded by the electric conductor.

The mortises should be cut with reference to the position of each plates, in order that when the plates are put together may be substantially of circular cross-sec- This, not indispensable, because the plates may be cut out approximately as shown either in Fig. 3 or Fig. 4, so that when properly assembled they will form one or more cores around which the coils are placed. These openings may be of any desired form. It is sometimes advantageous to cut the outer field-plates for the opposite sides of the pile suticiently wide to provide g such plates, as shown at 4t, to form the guides for the spool.

A sectional or divided spool is made use of, consisting of a cylinder E, which may be of paper or other material, with two or more rings or heads 7. The spool may be made in one or more pieces, so that it may be placed in position around the eore. The parts of the be joined together and secured in any desired manner.

It' the spool is made of sheet metal, it is advisable to so construct it as to prevent the circulation of edd -currents This may be accomplished by the interposition of an insulating-strip, as shown at I, Fig.- (i. The heads or rings 7 can be made in sections and joined in any desired manner, such as shown if desired, by laps and rivets, or secured to the cylinder E in any suitable manner, the special object being to provide a spool suiciently strong for windcore. y to be rotated for the purpose of building up the electric conductor in convolutions around the core, and hence the coils can be wound upon this spool by turn- IOO ing distinct advantages over those hitherto nearer.

ing the spool by hand or by any suitable l. llhe combination in a transformer, of a mechanism adapted thereto. The spool or ferromagnetic field built up of integral plates cylinder vmay be supported upon wheels or so mortiscd that when the plates are properly 5o rollers, as sliown at lt, lFigf. l and 3, "which assembled the core of the magnetic Vlield will act as guides, and it may then be rotated in be approximately circular in cross section, the manner above stated, or it may be rotated substantially as set forth. by the guide rollers or Wheels themselves, 2. 'lliie combination in a transformer, ot a which can be revolved by any suitable power. 'ferromagnetic field, composed of mortised 55 ln Windin g the primary and secondary coils plates, a divided spool or spools interlinlcing 5 and 6 the coils may be combined or grouped With the magnetic iield, and means for eausin any desiredmanner. llahowevenpreferto ing the spool or spools to revolve, substan- Wind the primary and secondary wires in sepatially as set forth. rate coils, as shown in Figs. 2 and t. rlhese 3. lhe combination in a transformer, oi' a 6o coils when side by side around the core are ferromagnetic held, a spool or spools inter advantageously separated by rings', which linking with such iield and rollers 'tor supmay also form the heads of the spools, so that porting the said spool or spools and `ior causif any defect arises in any coilstlie coil may ing them to revolve about the core or cores of be easily unwound or removed and another the magnetic lield, substantially as set forth. 6 5 substituted. y il. The combination in a transformer, of a lt i s of course understood that tlie primary ferromagnetic iield of integral plates each coils and secondary coils may be connected having a mortise through it and a sectional electrically in any desired manner in their or divided spool or spools interlinking with respective circuits. lt may be advantageous to use strips or bands for either primary or secondary conductors, or for both, as illustrated in the section llig. 2 at 6. lt is also core or cores of said ferromagnetic field, sub' advantageousto fill the mortised space oi the stantially as set forth. ield as completely as possible with the coils. 5. lhe combination in a transformer, of a 75 By the present improvements it is possible i ferromagnetic 'lield built up of plates, and a to economically construct transformers havsectional or divided spool or spools interlink ing with the terrein agnetic field and the winding oi' vrire around the core or cores of said ondary wires Wound upon said spool or spools by rotating said spool or spools around the made because the field has a minimum magnetic resistance and therefore requires a minimum magnetizing-current. The coils which surround the core or cores are Wound vvitli rapidity, so as to avoid consuming unnecessary time threading tlie wires through the mortised fields. rlliis construction also affords a ready means of dividing up the coils or helices upon the core in such a manner that the primary and secondary coils are easy of access, and in case of defect or injury an y coil maybe removed and another substituted with out disturbing the remaining coils. rElie magnetic leakage and resistance are reduced to a minimum.

l/Ve claim as our inventieiv E spool or spools on the core or cores, substantially as set forth.

6. The combination in a transformer of a ferromagnetic iield built up of plates, a seo tional or divided spool or spools interlinking i5 With the core and rollers for supporting the spool while being rotated, substantially as set forth.

Signed by us this 23d day of June, 1897.

JOHN J. BELLMAN. CHAS. T. RlT'lENlIOUSE.

TWitnesses:

HAROLD SERRELL, Guo. T. Pinounnv,

the :ferromagnetic field and primary and scc- 7o ferromagnetic iield by the turning of. said 8o

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