US1296941A - Brush-connector for electroplating-generators. - Google Patents

Description

3.1x FLYNN.

BRUSH CONNECTOR FOR ELECTROPLATING GENERATORS.

APPUCATION FILED JAH..29| 1916.

1,296,941. Patented Mar. 11,1919.

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J. J. FLYNN.

BRUSH CONNECTOR FOR ELECTROPLA TING GENERATORS. APPLICATION FILED JAN-29,1916.

296,941 v Patented Mar. 11,1919;

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UNITED STATES PATENT OFFICE.

JOHN J. FLYNN, OF IRVINGTON, JERSEY, ASSIGNOR TO CONNECTICUT DYNAMO AND MOTOR COMPANY, A CORPORATION OF NEW YORK.

BRUSH-CONNECTOR FOR ELECTROPLATING-GENERATORS.

Specification of Letters Patent.

Patented Mar. 11, 1919.

Application filed January 29, 1916. Serial No. 75,065.

To all whom it may concern:

' Be it known that 1, JOHN J. FLYNN, a citizen of the United States, and a resident of Irvington, in the county of Essex and State of New Jersey, have invented certain Improvements in Brush- Connectors for Electroplating-Generators, of which the following is a specification.

The objects of my. invention are to provide a bipolar electroplating generator having double wound armature and double commutator with devices which will conveniently permit the generator to be arranged for delivering the total output at a voltage equal to the difference of potential of the terminals at one end of the generator, or to deliver the total output at a voltage equal to twice the difference of potential of said terminals, or to divide the output so that it may be delivered in part at one voltage and in part at the other; to thus make it possible for electroplating generators to'be manufactured and placed in stock, ready for sale, adapted to fill a demand for either voltage as required; to provide for accomplishing the foregoing objects certain yokes or are bars which enable all the lead cables to be short and of uniform length; to locate all said lead cables at one side of the generator and provide connecting means for attaining the said different outputs; to secure a device which shall be simple to manufacture and to manipulate, and to obtain other advantages and results as may be brought out in the following description.

Referring to the accompanying drawings, in which like numerals of reference indicate the same parts throughout the several views,

Figure 1 is a plan view of a generator of my improved construction, with some of its parts in cross-section;

Fig. 2 is a side elevation of the same showing the armature leads connected in parallel at the transfer panel, for delivering the total output of the machine at a voltage equal to the difference of potential of the terminals at one end of the generator;

Fig. 3 is a side view of one of the yokes or are bars, looking endwise of the generator, and showing its relation to the other parts;

Fig. 1 is an elevation of the transfer panel with the armature leads connected to deliver either in parallel or in series, that is to say, either at a voltage equal to the difference of potential of the terminals atone end of the generator or at a voltage of twice that amount;

' Fig. 5 is like Fig. 4 except that the neutral terminal lug is left 011' so that the total output of the machine will be delivered at the double voltage;

Fig. 6 is a plan illustrating the preferred detail arrangement of yokes and related parts, partly in section, and Fig. 7 is an elevation of one of the yokes in said preferred arrangement, looking endwise of the generator.

In said drawings and referring particularly to Figs. 1 and 2, a bipolar double wound armature double commutator electroplating generator is shown provided at one end with a brush holder stud 10 connected to a yoke or are bar 11 which is also supported by the other brush holder stud 12 through the medium of an insulating bushing 13 which also supports the brush holder stud 12 in position in the usual manner. The yoke 11 also provides a terminal socket 14 into which is inserted heavy cable armature lead 15, which has a coupling 16 at its opposite end. The brush holder stud 12 is attached to a terminal 17 which is attached to a lead 18 having a coupling 19 at its other end. The leads 15 and 18 are similar to each other and have a: difference ofpotential.

At the other end of the generator a brush holder stud 20 carries a yoke or are bar 21, which is also supported by the other brush holder stud 22, through the medium of an insulating bushing 23 which also supports the brush holder stud 22 in position in the usual manner. The yoke 21 also provides a terminal socket 24 into which is inserted a heavy cable armature lead 25, which has a coupling 26at its opposite end. The brush holder stud 22 is attached to a terminal 27, which is attached to a lead 28 having a coupling 29 at its opposite end.

The leads 25 and 28' are similar to each other and have a difference of potential, and these leads are also similar to the leads 15 and 18. The leads 15 and 25 are of similar polarity and are connected through their respective couplings 16 and 26 to the connecting bar 30 which is provided with a socket 31, from which a cable may carry current to a plating tank. The

connecting bar 30 is mounted on a transfer panel 32, which is made of insulating material and secured to the front of the gen erator. The leads 18 and 28 are of similar polarity and are connected through their respective couplings l9and 29 to the connecting bar 33, which is provided with a socket 34 from which a cable may carry current to the plating tank. In the parallel arrangement of the leads shown in Figs. 1 and 2,. the generator delivers its total output from the transfer panel. to the plating tank at. a voltage equal to'the difierence of potential of the terminals at one end of the generator.

In Fig. 4 the connecting bar 33 has been removed, and the leads 25 and 28 crossed at the transfer panel 32, so that there is a difference of potential between the connect ing socket 31 and a socket 35 which is shown connected to the coupling 19 through a short connecting bar 36, equal to the difference of potential of the terminals at one end of the generator. There is also an equal difference of potential between the socket 31 and a socket 37 which is connected to the coupling 26 by a short connecting bar 38. Thus one plating tank can be operated by connecting it to the sockets 31 and 35, a second tank can be similarly operated by connecting it to the socket 31 and 37, and a third tank can be operated at double the voltage of the others by connecting it tothe sockets and 37. In this third tank the full difference of potential of the double armature in series is utilized.

In Fig. 5 the socket31 is left 0H, so that the generator acts as a straight double voltage generator with the armature windings in series; the connections are otherwise the same as in Fig. 4.

In Fig. 3 the shape of the yoke or are bar 11 is shown to illustrate the convenient practical manner in which it allows all the leads to be made short, similar to each other, and to all be brought to the transfer panel 32 at the front of the generator.

In Figs. 6 and 7 I have illustrated a preferred form and arrangement of the yoke and related parts, in which the stud 40 for the brush holder neXt the side of the machine at which the lead cables and transfer panel are situated is provided between the brushes and carrier 39 with a stop 41, whlch is an integral collar, which carries a socket 42. adapted to receive the lead cable 15.

The stud 40 projects beyond said stop 41 and receives an insulating sleeve 43 which extends through the arm of the carrier 39 as is common, with washers on opposite sides thereof for insulation. The sleeve 43 outside the insulated carrier arm receives the yoke 44, which is preferably apertured to slip over the sleeve and stud, and then outside said yoke is another insulating washer and a nut 45 threaded upon the. end of the stud to clamp between itself and the stop 41 all the said parts upon the insulating sleeve.

The stud 46 for the opposite commutator at that end of the generator is of substantially the construction shown in Figs. 15 inclusive, its stop 47 being spaced from "the brushes to correspond in position to the one on the stud 40 just described. Outside this stop is an insulating sleeve and washers for the carrier 39 and outside of them the stud receives the end of the yoke 44, which is preferably apertured to slip onto the stud. It will be understood that there is no insulation between the yoke and this stud, and a nut 48 clamps between itself and the stop 47 all the said parts.

The yoke 44 in this preferred construction differs from the yoke in Figs. 13 inclusive in that its terminal socket 49 does not project from the extreme end of the yoke, but from a point below or short of said end, as shown in Fig. 7. It will be understood that the nut 45 outside said end of the yoke.

is a part of one terminal at that endof the generator, while the terminal socket of the yoke is a part of the other terminal, and so it is desirable to separate the two in order that in the use of a wrench upon said nut connection be not inadvertently made between the nut and the terminal socket of the yoke. It has been found that if the terminal socket is set back from the end or offset, as shown in Fig. 7, the liability of such short circuiting is avoided.

It will be understood that in the construction shown in Fig. 6, like that shown in Figs. 1 and 2, both end of the generator are alike, so that the description given above for one end does not need to be repeated for the other.

Having thus described the invention, what I claim is.

1. In a generator for heavy current of low voltage, the combination of arevoluble shaft, an armature and commutator bars carried by said shaft, a brush holder stud of one sign located upon one side of said shaft, a brush holder stud of a different sign located upon the side of said shaft opposite the first-mentioned stud, a yoke mounted on the first-mentioned stud and in direct conductive connection therewitln'said yoke curving in the proximate form of a semi-' circle past said shaft and supported by the said second-mentioned stud in insulated relation thereto, and terminal sockets for lead cables one upon said second-mentioned stud and theother upon said yoke at a point adjacent said second-mentioned stud.

2. In the generator for heavy currents of low voltage, the combination of a revoluble shaft, an armature and commutator bars carried by said shaft, a brush holder stud of one sign located upon one side of said shaft, a brush holder stud of a diiferent sign located upon the side of said shaft diametrically opposite the first-mentioned stud, an arc bar connected to the first-mentioned stud and in direct conductive connection therewith, said are bar curving in the proximate form of a semi-circle around said shaft and provided With a hole through Which said second-menti0ned stud extends, a sleeve of insulating material encircling said secondmentioned stud and extending through said hole, a conductor connected to said secondmentioned stud, and a second conductor connected to said are bar at a point in close proximity to said econd-mentioned stud.

3. In a generator for heavy currents of low voltage, the combination of a revoluble shaft, an armature and commutator bars carried by said shaft, a brush holderstud of one sign located upon one side of said shaft, a brush holder stud of a different sign located upon the side of said shaft opposite the first mentioned stud, a yoke connected to the first-mentioned stud and in direct conductive connection therewith, said yoke curving in the proximate form of a semi-circle past said shaft and supported by the said second-mentioned stud in insulated relation thereto, means at the outer side of said yoke for securing it to said stud, and terminal sockets for lead cables one upon said second-mentioned stud and the other upon said yoke at a point back from its end which is secured to said second-mentioned stud, whereby the securing means may be manipulated freely and independently of said terminal socket.

JOHN J. FLYNN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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