US313569A

US313569A - David

Info

Publication number: US313569A
Authority: US
Publication date: 1885-03-10
Anticipated expiration: 1902-03-10

Description

(No Model.

D. APPLETGN.

APPARATUS FOR ELEGTROPLATING.

No. 313,569. Patented Mar. 1 0,' 1885.

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UNITED STATES PATENT OFFICE.

DAVID APPLETON, OEMANGHESTER, ENGLAND.

'APPARATUS FOR E LECTROPLATING.

SPECIFICATION forming part of Letters Patent Il'o. 313,569, dated March 10, 1885.

Application filed January 22, 1884. (No model.) Patented in England January 6, 1883, No. 88, and October 22, 1883, No. 5,011'; in France January 30, 1883, No. 153,419; in Belgilun January 31, 1883, No. 60,314, and in Germany February 9, 1883, No. 24,599.

To all whom it may concern.-

Be it known that I, DAVID APPLETON, residing at Manchester, in the Kingdom of England, have invented certain new and useful Improvements in Apparatus for Electroplating, (for which Letters Patent have heretofore been granted to me by the government of Great Britain, No. 5,011, dated October 22, 1883,) of which the following is a specification.

My invention relates to a new apparatus for electroplating the surface of rollers used in printing and embossing of cotton and other woven fabrics, and of paper and other materials.

It is well known that in electroplating, particularly when strong currents are used, bubbles of hydrogen gas will adhere to the surfaces to be plated, rendering the coating porous and defective. For printing-rollers such imperfect surfaces are entirely unsuitable.

The object of myinvention is to provide an apparatus for electroplating printing-rollers, by which a uniform layer of nickel is deposited on the printing-roller; and the invention consists of the apparatus herein described for plating said rollers.

In the accompanying drawings, Figure 1 represents a vertical transverse section, and Fig. 2 a vertical longitudinal section, of my improved apparatus for electroplating printing-rollers.

Similar letters of reference indicate corresponding parts.

a is an engraved hollow copper roller,which is suspended in a plating-bath, b. The ends of the roller are closed by means of stoppers c c, which are mounted upon a shaft, (1, that is preferably made of copper. The stoppers c 0 may also be made of copper, or they may be made of other material, so long as there is an electrical connection between the roller and the shaft. The shaft d is suspended by means of conductive links eefrom the cathodescribing witnesses.

bar f, which is in connection with a battery or with a dynamo-electric machine. A shaft, 9, is mounted on bearings of standards attached totheplating-tank. Onthisshaftgismounted a pulley, h, which is connected by means of a cord or chain or other driving medium with the stopper 0, which is formed to act as a pul v nected by supportingrods m to clamp-sockets m on the cathode-bar f. This brush bears against the revolving roller, removes any hydrogen-bubbles which may adhere to the sur-.

face of the roller, and causes a solid andhomogeneous deposition of the metal thereon. Theanodes 0 are suspended in the bath, one on each side of the roller, and are connected with the proper pole of the battery or machine.

In place of the brush, any other mechanical means may be used by which the accumulation of gas-bubbles on the surface of the deposit may be prevented.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- The combination of a plating-bath, means for suspending the hollow printing-roller from the cathode-bar, means for imparting rotary motion to the roller, and a brush supported adjustably on the cathode-bar and arranged in contact with the revolving roller, substantially' as specified.

In testimony whereof I have signed my name to this specification in the presence of two sub- DAVID APPLETON.

Witnesses:

DAVID FULTON, ARTHUR LEDGER.