US790747A - Electroplating apparatus. - Google Patents

Description

PATENTED MAY 23, 1905.

' G. T. PRATT.

ELECTROPLATING APPARATUS,

APPLICATION FILED OUT. 3, 1903.

2 SHEETS-SHEET 1. I 3

' TTOIENEY.

C. T. PRATT. ELEGTROPLATING APP APPLICATION FILED 00w,

P Tum m B1 A3 2 SHEETS-SHEET 2.

L'NTOL 1 112* CJJMELES firm fiUNE'SEJ /YTTOJENEY. 7

@MTED STATES Patented May 23, 1905 PATENT @FFIGE.

CHARLES T. PRATT, OF FRANKFORT, NEW YORK, ASSIGNOR TO PRATT CHUCK COMPANY, OF FRANKFORT, NEWV YORK.

ELECTROPLATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 790,747, dated May 23, 1905.

Application filed October 3,1903- Serial No. 175,613.

To all whom it rncty concern.-

Be it known that I, CHARLEs T. PRATT, of

Frankfort, in the county of Herkimer and State of New York, have invented certain new and useful Improvements in Electroplating Apparatus; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form part of this specification.

The object of my present invention is to provide an apparatus for effectively and expeditiously electroplating the inside of ferrules, rings, bands, slip-nipples, and like constructions.

In the drawings, Figure 1 shows a transverse section of a bath-tan k with my improvements in apparatus applied. A portion of the construction is shown in broken sections. Fig. 2 is a partial longitudinal section of the bath-tank and apparatus, taken on a line with A B, showing the parts to the left of the line. Fig. 3 is another partial longitudinal section of the bath-tank and apparatus, taken on line C D of Fig. 1 and showing the parts to the right of the section-line. Fig. 4 is a partial plan view of the bath-tank and apparatus, showing a set of slip-nipples in position for electroplating therein. Fig. 5 is an enlarged detail section showing the arrangement and construction of parts and showing a slip-nipple in position for electroplating. Fig. 6 is a similar enlarged detail showing the opposite ends of the anode and cathode with a slipby vertical pieces-5 and 6, which maybe secured to the inner walls of the tank. The pieces 5 and 6 are each provided with slotted notches or recesses a (0, extending from the top downwardly, so that the lower end is located but a short distance from the bottom of the V-shaped trough or holder 4. The recesses a a are adapted to receive the ends of the anode-bar 7 At the side of the positive conductor 2 the bottom of the recess a is formed by a metal conducting-piece 11, which extends upwardly to and makes electrical connection with the conductor 2. Along the inner walls of the troughs or holder 4 extend one or more metal conducting-strips, as 9 9, which constitute the cathode of the apparatus. The strips 9 9 are connected at one end by a cross-wire 10 and are connected to the negative conductor 3 by a conductor 8.

In operation the slip-nipples or other ring devices to be electroplated on the inner surface are strung on the anode-bar 7 when the same is removed from the bath. The anodebar 7 is preferably of zinc. When it has been substantially filled with a quantity of these devices, it is dropped into position, with the ends in the notches a a before mentioned. When the ends of the bars strike the lower ends of the notches a a, the bar is supported parallel with the anodes 9 9. The outer surface of the slip-nipples (which are indicated by A) rest on the cathode, and the arrangement is such that the anode will occupy a substantially central or axial position with reference to the slip nipples or devices A. When electric current is supplied to the apparatus through the conductors 2 3, the anode is dissolved and a deposit is made on the inner surface of the nipples or other device A. When the deposit has become sufficient, the lot is removed and a new lot substituted.

The operation of placing the articles to be operated upon onto the anode-bar and the same into the solution and removing them can be carried on without shutting off the electric current, as the current is of large quantity and low tension. By placing the anode and the holder 4 on an incline, as shown, the gases which generate will escape out of the higher end, passing through the row of nipples as though it were a pipe. It is preferable to have the anodes substantially completely covered with the lot of nipples.

A particular advantage that I claim for this apparatus is that a tendency to dissolve the anode-bar and deposit it on the cathode-bar is to the fullest extent obviated, and great facility for placing the articles to be operated upon into electroplating position and removing the same is provided. By providing the trough-like holder L with an independent support at each end the cathode can be conveniently removed from the bath for cleaning or other purposes without displacing others which it is not desired to remove.

What I claim as new, and desire to secure by Letters Patent, is-

1. In an electroplating apparatus of the character described, a bath, a recumbent removable anode-bar, a parallel cathode-carrier for supporting the work in position to surround the anode, substantially as set forth.

2. In an electroplating apparatus, a bathtank, a series of recumbent anode-bars, parallel cathode-bars, a removable frame carrying the cathode-bar and the supports for the 1 anode-bar at each end combined, substantially as set forth.

3. The combination in an electroplating apparatus adapted for use on slip-nipples as specified, of a bath-tank, a series of removranged to support the same in axial position to a line of-slip-nipples supported on the oathode-bars combined, substantially as set forth.

5. In an electroplating apparatus, the combination of a bath tank having recumbent cathode work-supporting bars mounted therein, removable anode-bars and supports for the anode-bars arranged adjacent to each .end of a the cathoderbars, so as to support the anode- CHARLES T. PRATT.

Witnesses:

F. B. WATSON, WM. RUTHERFORD.

Images