US1599284A - Anode holder - Google Patents

Description

ANODE HOLDER Filed March 11,1926 *.gshee'ts-sheet 1 FIG. I

FIG. ZZZ' FIG. IZ'

lnveu'nn M142 ATTORNEY '.Sept. 7 1926.

C. H. PROCTOR 'ANoDE HOLD-ER Filed March 11, 1926 2 Shee'ts-Sheet 2 FIG. I

INVENTGK Paieqieasepi. v7, 192e.

UNITED STATES rATENT oFFici-z.

cuantas may raoc'ron, or mineros, Naw sans, Assieivoa '.ro 'rn-n -aonssnna H ASSLACHER CHEMICAL C0., OF NEW YORK, N. Yl., COBPOBATIQN QF NEW YORK.

Nomi minnen.'j f

Application led meh 11, 192B. Serial No.. 93,4857.

The ob'ect of this invention is to provide a holder or soluble anodes whereby a means is provided for maintainin a; substantially constant' anode surface. uch an anode should in addition be easily handled and replenished.

The -invention in its general as ect concerns the provision 'of an anode older in the form of a box, into which, anode bars 1o can-be readily placed as those already in the holder. become plated away'. This ability makes it possible to maintain a substantially constant anode `surface in the holder without `removing the holder from the bath and without particular effort and loss oftime.

The box is preferably one of greater width than thickness with one face substantially open exce t for retaining Han es and an open to into which the anode ars can be 2o droppe or slipped to slide o f themselves down on top of those alreadyl in the box. This structure also enablesinsoluble as well as soluble anode bars to be dropped into the holderto regulate the ratio between the soluble and insoluble anode surface.

My invention will be ex lained in connection with the attached' rawings. The holder comprises preferably a narrow rectangular box 1, Figure I and II having a panel in one of its wide faces removed in vsuch a way as to leave projecting retaining Iiianges 2 extending inward. The top of this box -is completely removed and a hook 3, Figure III formed at the top to provide a means for fastening to a bus bar. The bottom 4 is left intact. This box is constructed of any material which is practically insoluble under the influence of the plating current in the particular bath for which it is intended; it ma be of lead, phite, steel,

etc. as require are 4now prepared of such a size that they can be inserted in the top of the box and will slide down to the bottom; these bars 5,

preferably cylindrical, are then piled one on the other in the box. They are retained in the box as shown in Figure I by the projecting flan 2. I prefer to have these soluble ano e bars of such, dimension that the compositeanode will be only one cylinder in thickness but there is no objection to having several thicknesses. In fact, this actually occurs in operation. As the anodes are plated out, thel'cylinders become smaller u and settle to the bottom of the box, here the The solub e anode barsl cylinders may be so small that several will now occupy t e space which would be taken' by an original piece. L

The advantages of my anode holder are thus apparent. As the material is removedv from the anodes, the bars slide down in the box as stated, fresh bars ca ii thenbe inserted at the top of the box to maintain very closely the desired calculated anode surface.

With some anodes of this type the bars', as they nea-r the bottom tendto break into pieces. To avoid having these ieces' drop to the bottom of the plating tan -I provide a front face of wire screen on the lower end of the box. This screen in'some cases may advantageously cover the whole of the open face of the box.

At times it is advisable to have an anode wherein a larger ratio of insoluble to soluble anode surface is obtained. For this purpose I insert a suitable blank of insoluble mafl terial, such as the rectangular frame 6, Fig. V into the box. This blank maybe of anyv desired size and may be placed in the box whereverpractice shows it to be best suited. Thus, for example, a large blank 6, ma be laced in the bottom of the slide as in Vig. V. However, some soluble anode bars may irst be inserted then the blank and then more of the soluble bars. Another application is alternate bars of soluble anodes and insoluble material.

In order to provide for circulation aroundl the anode I have found it advanta eous to erforate or cut out holes in the wi e closed ace vor back of-the box as shown at 7 in Fig. IV. These holes may be of any size or shape. ,y

The boxes and insoluble blanks ma `,A for example, be made of steel for use in'al aline baths -in the plating of zinc, cadmium and the like. I have found that this type of anode is adaptable to any platiilig process either in still or drum plating. or drum plating or 100 other special cases the anode-holders are conveniently curved .from top to bottom so as' to follow the contour of the drum. The" insertion of the soluble portions is accom,

plished as before. The bus barsV orv otherl i supporting means vare of course variedto suit the particular need and properly 'hold .the anode in place.

Whatv I claim is:

1. An anode holder which comprises a 11 box for holding a plurality of anode bars, said box having a substantially open face,

and an open to permitting new bars to be Y readily drop into the box as those therein are plated away.

2. An anode which comprises a box having substantiallyclosed sides, back, and bottom, and an open front face, guide ilanges along the substantially open front face and la plurality of anode bars slidabl disposed in said box, new bars adapted to readily inserted through the o n'top of the box and to slide down into p ace as those in the box are plated away.

3. An anode holder which comprises a box for holding a plurality of soluble and insoluble anode bars, said box having a substantially open face, and an open top permitting the selective andready insertion of new bars into the box as those therein are plated away.

- bath used.

5. Anode for alkaline plating baths comprisin? a plurality of soluble anode bars slidab arranged in contact with one another in an open face steel box whose thickness is approximately that of the diameter of said anode bars.

6. Anode for alkaline plating baths comprising 4a plurality of cylindrical soluble anode bars slidably arranged in contact with one another in an o en face steel box whose thickness is approximately that of the diameter of said cylindrical anode bars.

Signed at Perth 'Amboy in the county of Middlesex and State of New Jersey this 5th day of March A. D. 1926.

CHARLES HENRY PROCTOR.

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