US2097508A

US2097508A - Anode

Info

Publication number: US2097508A
Application number: US719453A
Authority: US
Inventors: Howard H Blouch
Original assignee: EI Du Pont de Nemours and Co
Current assignee: EIDP Inc
Priority date: 1934-04-07
Filing date: 1934-04-07
Publication date: 1937-11-02
Anticipated expiration: 1954-11-02

Description

Nov. 2, 1937,

Hat/W6 H. H. BLOUCH ANODE Filed April- '7. 1954 INVENTOR. F/G. YJ Harm/m M 51.00am

A TTORNE Y.

Patented Nov. 2, 1937 UNITED STATES,

ANODE Howard H. Blouch, Cleveland, Ohio, assignor, by mesne assignments, to E. I. du Pont de Nemours & Company, Wilmington, DeL, a corporation of Delaware Application April '1, 1934, Serial No. 719,453 Claims. (Cl. 204-4) This invention relates to anodes for use in electroplating and is particularly directed to anodes cast upon a support, or spine, which is provided with means along its length providing sur- 5 faces upon which the anode material may rest and about which the anode material may cling.

In the manufacture of anodes it has been the practice to cast the anode material around a spine which is inert to the plating bath, the spine being provided with a hook by means of which the anode may be suspended. This method of construction is not entirely satisfactory, since uneven anode corrosion removes the active material from one side or another and theremainder falls from the spine, frequently damaging mechanical equipment. The anode material which becomes detached from the spine is ,no longer available for its intended use in plating, and the life of the anode is greatly decreased.

It is an object of my invention toimprove the bond. between the inert material of the spine and the active anode material cast around it, so that the anode material will remain on the spine until it is almost entirely utilized, thereby effecting a 25 great economy of anode materiaL' I accomplish my purpose by modifying the spine so that surfaces in planes other than those of the spine faces are provided to anchor the anode material.

In the drawing: I 30 Figure 1 illustrates an anode provided with a spine modified according to my invention.

Figures 2-8, inclusive, show portions of modifled spines embodying my invention.

In Figure 1 there is illustrated a curved anode l l 5 cast upon a spine 2. The spine is provided with a hook 4 by means of which the anode may be suspended in an electroplating bath. The anode material is that which one'desires to electrodeposit and may be, for example, zinc, cadmium, or

40 tin. The spine is made of any material customarlly used in this relation, and is preferably iron or steel. The spine is provided with holes 3 approximately elliptical in shape which providesurfaces in planes other than those of the spine 45 faces. The anode material, when cast on the spine, fills the holes 3 and firmly anchors the anode to the spine. Even if the corrosion of the anode occurs more rapidly on one side than on .the other, the remaining anode material does not 50 fall ofi, but is held securely by the spine. Obviously, the holes may be widely varied as to size and shape without departing from the spirit'of my' invention. 0

In the modification of Figure 2 the spine 2, of

55 which only a portion is shown, is provided with struck-out, upwardly directed hooks 5, adjacent hooks being on opposite sides of the spine.

In Figure 3 the hooks 5 are all on the same side of the spine. This modification is best applied to a curved spine, the hooks being bent away from 6 spine, I may secure them in place as by welding. 1

In Figure 6 the spine 2 is provided with hooks l. The hooks l are shown as round, upwardly directed pins.

It is apparent that the hooks struck from, or

secured to, the spine may be varied as to size and shape without departing from the spirit of my invention. The hooks may, obviously, extend from the spine at any desired angle, though in general I prefer upwardly directed hooks. Figure '7 illustrates a modification wherein a spine 2 is provided with struck-out hooks 8. The hooks 8, instead of being upwardly directed, are bent downwardly. The spine of Figure 7 operates very satisfactorily.

The spine may, of course, be of any desired cross section. In Figure 8 there is seen a portion of a spine 9 which is round in cross section. The hooks used are short pieces of wire I0 which are wrapped partly around the spine and welded in place.

, My improved spines can be used with curved anodes, such as that of Figure 1, or with straight anodes. It is also noted that preliminary to casting the anode materials upon the spines of my invention, I find it advantageous to coat the spines 40 with some of the anode material. The spines may be preliminarily coated by such plating processes as electrodeposition, dipping the spine into a bath of the anode material in molten condition, etc. 5 This preliminary coating of anode material increases the adhesion between the spine and the anode cast upon it.

I claim:

1. An anode of the type described comprising a spine with anode material cast thereupon, the spine being provided with struck-out hooks.

2. An anode of the type described comprising a spine with anode material cast thereon, the spine being provided with struck-out hooks, part of the books extending in one direction, and the remaining hooks extending in other directions.

3, An elongated, imperforate, soluble anode of the type wherein the anode material is dissolved in use, the soluble anode material being cast upon a spine of insoluble material which extends substantially the whole length of the anode, and the spine being provided with struck-out hooks.

4. An elongated, imperforate, soluble anode of the type wherein the anode material is dissolved in use, the soluble anode material being cast upon aspine of insoluble material which extends substantially the whole length of the anode, and the