USRE14015E - Condenser arrangement - Google Patents

Description

A. R. BULLOCK.

CONDENSER ARRANGEMENT. APPLICATJDN man MAR. 19. may

Reissued Nov. 23, 1915. 1 1 4,0 1 5;

W. I I

UNITED STATES PATENT OFFICE.

ARTHUR R. BULLOCK, OF CLEVELAND, OHTO, ASSIGNOR T HENRY C. LEE, TRUSTEE, 0F

LOS ANGELES, CALIFORNIA.

CONDENSER ARRANGEMENT.

14 015; Specification. of Reissued Letters Patent. Reissfledlqov, 23, 1915,

Original No. 1,048,034, dated December 24, 1912, Serial No. 615,787. Application for reissue filed March 19,'

1913. Serial No. 755,510.

To al whom it may concern: segments which are insulated from each Be it known that I, ARTHUR BULLOCK, other. a. citizen of the United States, residing at Upon a further extension of the motor Cleveland, in the county of Cuyahoga and shaft are arranged a series of rings A, B, C, 55 State of Ohio, have invented a certain new etc., which are contacted by collecting memand useful Improvement in Condenser Arbers or brushes as represented at. K and L. rangements, of which the following is a The bars or segments upon the rotating full, clear, andexact description. body Z-are arranged in groups. For. ex-

This invention relates to an arrangement ample, every sixth bar may be connected, 60

of condensers for producing certain elecand this group of bars connected to ring A,

trical effects in connection with various while other groups may, be connected to forms of electrical apparatus to which it the rings B, C, etc. Suitable brushes D is adapted. and E are supported upon rings F and pro- For the purposes of disclosure I have ject parallel with the segments upon the 65 shown and described a mechanical current rotating body, and in these Holders one or transforming device and associated theremore brushes may be mounted. The rings a with condensers arranged in accordance F are mounted upon a flanged extension with my invention. G which iscarried by the motor casing.

Generally speaking, the invention com- The brushes D and E are connected with -70 prises the elements and combinations therea suitable source of direct current by means of set forth in the accompanying claims, of the conductors H and I. The rings A Reference should be had to the accomand B are contacted by current collectors panying drawings forming a part of this J and K which in turn are connected with specification in whichconductors L and M. -75 Figure 1 is a top plan view of a mechani- The direct current delivered to the brushes cal transforming device and Fig. 2 is a D and E is transformed into an alternatdiagrammatic representation of the man-, ing current and in this form is delivered nor of arrangement of the condensers in conover the conductor L and M. The frenection with this machine. quency of the alternating current may be 80 As before stated, the invention primarily controlled by the rotation. of the. annular relates to an arrangement or grouping of member or, in other words, by the number condensers, which condensers are connected of times which the circuit is made. an in a closed series. At two points in this broken in a given period of time by the series of condensers,a source of direct rotation of the annular member Z. 85

current is connected and at two other points It will be perfectly apparent that this in this series of condensers, which points device described is merely one form of such are intermediate the first mentioned points devices, and inasmuch as it forms no part and upon opposite sides of the series, alof the invention disclosed herein, it will ternating current conductors are connected, not be further described. 90

which alternating current has been trans- Mention has before been made that the i formed from the direct current first mensegments upon the annular member carrie tioned. The alternating current circuit 0011- by the motor shaft might be divided into 'tain's in series a primary element of a trans-- groups of six, but it will be apparent that forming device. other groupings of the segments or 'bars 95 Referring to the drawings, the mechanimay be made, and for the purpose of more cal transformingdevice will be seen in top easily illustrating the same, I am assumplan view in Fig. 1. This device in general mg, for the purpose of further disclosure consists of a motor M upon the extended of this invention, that the alternate bars shaft of which is mounted an annular body are joined to each other. I 100 Z having the periphery formed with a Referring to Fig. 2, aportion of the seg- I plurality of parallel conducting bars or ments or bars carried by the annular memthe line L, back to the her will be represented at N, O, P, Q, and as indicated in the drawing, the segments N and P are connected, while the segments are connected. This mode of connection will extend throughout-the series of bars or segments and all of the bars N, P, etc., will be joined to a common conductor R while all the segments O, Q, etc., will be connected with a common conductor S. These conductors R and S are connected respectively with the rings A and Bas heretofore described. The brushes D and Ebear upon the segments and, in the position shown, are at present bearing upon the segments N and 0. It will therefore be apparent that the current path is as follows: Conductor H, brush D, segment N, conductor R ring A, collector K, thence through line M, collector J, ring B, conductor S, segment 0, brush E and conductor I. The next position which the brushes D and E will assume is represented by dotted lines and by the reference characters D and E D and E do not move but that the segments rotate. In the rotation of the segments, so that the brushes occupy the relative positions which have just been suggested, it will be necessary for the, brush D to break its contact with the segment N and pass to the segment 0, the same being true of the brush ii'with respect to the segments 0 and P.

n be formed as a current is broken would be so great as to prohibit the use of any such machine without a means being provided to kill the spark or at least reduce it tosuch an extent as to render it harmless. For this purpose and other purposes which will later be described, a series of condensers are arranged in the form of a parallelogram or double delta, bated at a, b, c and d. These condensers are all connected with each otherin series. At one corner of the parallelogram the brush D is connected by means of the conductor T, and at a point opposite to thefirstmentioned point, the brush E is connected by means of a conductor U. The collector K is also connected by means of a conductor V with another point .of the series of condensers which is intermediate the points at which the brushes D and E are connected, and the collector J is connected by means of a conductor W with another point in the series of conductors which is opposite the point to which the collector. K is connected and intermediate the points at which the brushes D and E are connected. It will be apparent that as the brush D breaks or passes from the segment N the current,

which will tend to pass across the break will still find a 66 T,

path through the conductor condenser d, conductor V to the collector I for, as a matter of, fact, it will be understood that the brushes doing this the spark or are which would their contact with the while the condensers a rent path when. the brushes breakwith the ing the segments rotates these condensers being indi-' mentioned are connected discharge,

ring A, conductors R segment P and thence to the brush,

from which it will be seen that the current flowing in the conductors L and M is in a direction reverse from that which was first described.

When the brushes D and E break with the segments O and P the current which would then be flowing would find a path as follows: Segment 0, conductor S, ring B, collector J, conductor W, condenser a, conductor T, and thence to the brush D which is connected to the line, and the current fiowing between the brush E and the segment would find a path as follows: Line L, collector K, conductor V, condenser 0, conductor U, brush E which is connected with the line, segment P, conductor R ring A, and collector K. The above circuits which include the condensers are simply stated as what it is believed takes place, but I do not wish to say that this is the only action, for the condensers may have some interaction which is more than possible. i

From the above it will be seen that in the I first instance, the condensers d and 1) form thecircuit when the brushes have broken segments N and O, and 0 are in the cursegments 0 and P. As the member carryfarther, the conditionsagain become the same as that first described,tl1atis to say, the brush D would connect with the segment P while the brush E would bear upon the segment Q, which segments are in electrical connection respectively with the segments N and 10. Therefore, the conditions would be the same. From the above, it will be clear that at all times there is a condenser in parallel between each brush and each current collector,

as before stated, is respectively connected with the line H, I and line L, M, or in other lel across the'break in the A, C and D, C circuits, and furthermore,- the condensers just to the A, O circuit and D, C circuits so that. they are in parallel with or shunted around the current converting device. Therefore the condenser which as previously explained occurs, at the time when the A C and D C circuits are again made through the converting device after a break, is directly into the line, and not through the body of segments composlng the converting device. Thisv I find to be important and desirable, for, the line being of relatively large capacity will take up the condenser discharge, without any disadvantageous effect, and by so much permits the current converter to be run substantially sparkless.

The above described action would take place regardless of the load which was upon the external circuit L, M, but if this external circuit carry an inductive load, it is found that an additional action takes place, namely, that surging or resonant currents are set up between the condenser and inductive load so that, in the interval between which the brushes are passing from one live segment to the next live segment, the condensers discharge themselves through the inductive load in the form of an oscillating current. Such an inductive load as has been mentioned is shown inFig. 2 in the form of a primary coil of which the secondary is shown at Y, the secondary being connected with suitable conductors Y and Y in the manner which will be well understood.

For the purpose of adding capacity to the primary circuit, L, X, M, I have found it advantageous to place a condenser 6 between the points in the series of condensers with which the conductors V and \V connect. As just stated, this condenser e addscapacity to the primary circuit, and at the same time materially assists in the matter of the oscil lating currents which have heretofore been referred to.

While I have shown the condensers connected in the form of a parallelogram or double delta, it will be apparent that other forms of arrangements may be used in producing .the same effects and, furthermore, while the condensers A, B, C, D and E are shown as single condensers, this is merely illustrative, and the area of condensing surface need not necessarily be the same in each of the condensers.

The ap ')aratus disclosed in this application may be used to rectify alternating current. Therefore the inyention is just as applicable when the mechanical transforming device operates to rectify an alternating current as when it operates to transform a direct current to an alternating current. When used to rectify an alternating current the motor M should be a synchronous motor.

Having thus described my invention, what Iclaim is:

- 1. A plurality of condensers connected in series to form a closed circuit, terminals of a circuit connected at two points to said condenser circuit, terminals of a second circuit connected at points upon opposite sides of the condenser circuit, which points are intermediate to the points of connection of the first mentioned circuit.

2. A plurality of condensers connected in series to form a closed circuit, a source of current connected with said condenser circuit at two points, and terminals of another circuit connected with the condenser circuit which are on opposite sides of the condenser circuit, and said points, being intermediate the points of connection with the first men-- said condensers at different corners of the I parallelogram and terminals of a circuit connected with the remaining corners of the parallelogram.

5. A plurality of condensers arranged substantially as a parallelogram, the said condensers being electrically connected in series, a source of current connected with said condensers at opposite corners of the parallelogram, and terminals of a circuit connected with the remaining corners of the parallelogram, and a condenser between the last mentioned corners of the parallelogram for the purpose described.

6. A plurality of condensers connected in series to form a closed circuit, a source of current connected with said condenser circuit at opposite points thereon and terminals of another circuit connected with the condenser circuit at' different points thereon, which latter points are intermediate the points first referred to, and a primary element of a transformer connected in parallel with the last mentioned circuit.

7 A plurality of condensers connected in series to form a closed circuit, a source of current connected with said condenser circuit at different points thereon, and termi- 'nals of a circuit connected with the con .8. The combination with a device for changing direct current into alternating current, a source of current f0I-S&1d "deV1Ce, a

plurality of condensers lIl'SBIlGS arranged as, the said source of current being connected to two opposite cornersof 'the parallelogram. the

a parallelogram,

qther two corners being connected with the circuit carrying the alternating current upon the said device, and a primary element of a transformer in the said alternating circuit.

9. The combination with a direct current circuit, an alternating current circuit, a device adapted to connect each side of one circuit alternately with the sides of the other circuit, and a plurality of condensers electrically connected in series and forming a closed circuit, one of said circuits being con-' nected to the condenser circuit at two points thereon, the other circuit being connected at two other points upon opposite sides of the circuit and intermediate the first two points.

10. The combination with an alternating current, circuit of a mechanical transforming device connected with said circuit and transforming the alternating current to direct current, a direct current circuit supply from said transforming device, and a plurality of condensers electrically connected in' series and arranged as a closed circuit, one of the above mentioned circuits being con- -nected with the condenser circuit at two points thereon, the other of the said circuits being connected at two points upon opposite sides thereof and intermediate the points of connection of the first mentioned circuit.

11. The combination with an alternating current circuit and a direct current circuit,

. of a device for electrically connecting and disconnecting each side of one of said circuits alternately with the opposite sides of the other of said circuits, in combination with a circuit containing capacity introduced between cooperating sides of the altel-nating and direct current circuits and in parallel with thedevice for electrically connecting and disconnecting the circuits.

12. The combination with an alternating current circuit and a direct current circuit,

of a device for electrically connecting and disconnecting each side of one of said circuits alternately with the opposite sides of the other of said circuits, in combination with a circuit containin a condenser introduced between cooperating sides of the alternating and direct current circuits, and in parallel with the device for electrically connecting and disconnecting the circuits.

13. In a current converting device, the combination with a set of insulated segments, means for electrically connecting an alternating current circuit and a direct current circuit with said segments, said set of segments being adapted to connect and disconnect each side of one of said circuits alternately with each side of the other of said circuits respectively, in combination with a circuit containingcapacity introduced between cooperating sides of the alternating and direct current circuits, and in parallel with the set of segments.

14. In a current converting device, the combination with a set of insulated segments, means for electrically connecting an alternating current circuit and a direct current circuit with said segments, said set of segments being adapted to connect and disconnect each side of one of said circuits alternately-with the opposite sides of the other of said circuits, in combination with a circuit containing a condenser'connecting with cooperating sides of said alternating and direct current circuits, and in parallel with the saidset of segments.

Signed at Cleveland, Ohio, this 12th day of March, 1913.

ARTHUR R. BULLOCK.

In the, presence of A. J. HUDSON, N. C. HUBBARD.

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