US1525271A

US1525271A - Electroplating barrel

Info

Publication number: US1525271A
Application number: US652956A
Authority: US
Inventors: John T Daniels
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-07-21
Filing date: 1923-07-21
Publication date: 1925-02-03
Anticipated expiration: 1942-02-03

Description

. J. T. DANIELS ELECTROPLATING BARREL Filed July 21, 1923 2 Sheets-Sheet l WI TNESSES A ITOHNEYS I Feb. 3, 1925-v 1,525,271

J. T. DANIELS ELECTROPLATING BARREL Filed July 1923 2 Sheets-Sheet 2 III/III] I 71/01/11, lfi

WITNESSES IN l/EN TOR I cfghw TDA W I 4 ATTORNEYS Fatented Feb. 3, 1925.

JOHN T. DANIELS, or NEWARK, NEW JERSEY,

ELECTROPLATING BARREL.

Application filed July 21, 1923. Serial No. 652,956.

To all whom it may concern:

Be it knownthat I, JoHN T. DANIELS, a citiaen'of the United States, and a resident of Newark, in the county of Essex and Statecf New Jersey, have invented a new and Improved Electroplating Barrel, of which the following is a full, clear, and exact description.

, Thisinvention relates to a new and improved construction .of electroplating barrel.

An objectof the invention concerns the provision ofa construction in which the electrical contact is maintained at all times and under all conditions of service by a combination of elements extremely .simple.

Another object concerns the provision .of a new and improved arrangement of electrodes whereby the distribution of the electrolytic current through the barrel is most efliciently achieved with respect to the contents of the barrel.

The ilnvention is illustrated in the drawings', of which- Figure 1 is a side elevation of the device 25 showing part of the barrel in section;

; Fig. 2 is a section taken on the line .22

of Fig. 1; I

Fig. 3 is asection taken on the line 3-3 of Fig.1; and

Fig. 4 is an (enlarged detail section showing the manner in which the conducting ring is mounted on the power shaft hearing casing.

The form of the invention shown in the drawings is a preferred form, although it is understood that modifications in the construction and arrangement of the parts and in the character of the materials used may be adopted without departing from the spirit :of the invention.

The invention concerns an electroplating barrel 1, made preferably of wood or similar material, which is adapted to contain a cylinder 2, preferably erforated and made of suitable material. 0th the barrel and the cylinder are open at their outerends. Against the bottom of the cylinder or'drurn within the barrel 1 is disposed a metallic electrode in the form of a plate 3. This plate electrode is held by a bolt 4 against the bottom of the drum, this bolt extending also through the bottom of the barrel 1 and having a nut: 5 on the outer end there: of between which and the bottom of the barrelthe base 6 of a curved con-tact spring or shoe7 is fastened.

Around the sides of the barrel 1, and between the same and the outer surface of the drum 2, are disposed a plurality of other electrodes such as 8. See Fig. 2

ticularly.

These electrodes are in the form of bars or slabs which are connected by bolts to trunnion plates 10. These trunnion plates are separated from the barrel byhoops or rings of metal such as 11. The trunnion plates are provided with trunnion bearings 12 projecting into the .ends of a yoke-shaped rotatable frame 13.

This yoke Attached to one end of the bearing or cas ing 17, preferably on the side adjacent the frame 13, is a fixed conducting ring '24.. This is connected to the casing by means of machine screws which are separated from the conducting ring by insulated sleeves 26 (see Fig. 4).

Adapted to contact with the curved contact shoe or spring 7 .(see Fig. 3) is a U- shaped rotatable conductingspring, such as 27, the base of which lies flat and is fastened to an insulating plate 28 placed against the hub 29 of the yoke frame The limbs 30 and 31 of this U-shaped conducting spring extend inward against the inner face of the conducting ring 24, which is fixed. By reason of the rotation of the hub 29, the U-shaped conducting spring 27 is rotated but, nevertheless, makes contact with the fixed ring '24. The U-shaped spring 27 contacts with the contact shoe 7 which is in connection with the electrode are insulated from the rest of the machine, a separate circuit is established to a binding post 32 (see Fig. 1) and connected to the ring 24:.

A circuit from the electrodes 8 is established through the bolt 9, the trunnion plates 10, the frame 13, the shaft 14, the casing 17 and the binding post 33.

In order to hold the barrel in the position shown in Fig. l, I provide the barrel with a latch arm at with which a pin 35 mounted on the yoke frame adjacent the end of the arm is adapted to engage, preferably with an aperture in the arm so that during this engagement the barrel is held from rotatlon around its trunnion 12. However, the barrel and the yoke frame can rotate and do, and by this rotation will work over the material and the electrolyte disposed therewithin so that the material is thoroughly electroplated.

Whenever it is desired to empty the contents of the barrel the yoke frame is moved until. the trunnion bearings are in a horizontal plane, whereupon the pin 35 is removed, permitting the barrel to be oscillated around its bearing to the position shown in dot-and-dash line in Fig. 1, upon which the contents will be spilled out on a screen 36 disposed over the top of the tank or container 37. The liquid or electrolyte will pass through the screen and can be mixed in the tank or container 37 with some agent to regenerate the electrolyte, whereas the article which has been electroplated will be caught by the screen and will remain thereon, from which place it can be easily collected. The detachable relation between the contact shoe 7 and the spring member 27 enables the barrel to be moved and the contact to be broken very easily, but it is immediately reestablished as soon as the barrel is moved back to the normal position and latched by the pin 35, regardless of the rotation of the yoke frame, and assuring an efiicient contact is made for the electric circuit.

Therefore, it will be easily observed that the invention achieved concerns the simple and eflicient establishment and maintenance of the electric circuit, the ready adjustability of the device, and the thorough and efficient manner in which the current flowing through the electrolyte and the material being plated is established.

lVhat I claim is 1. An electroplating device which includes a tiltable barrel mounted on trunnions, a slidable yoke frame supporting said trunnions, co-operatin latch means on the barrel and frame to hold the barrel latched in a definite position while the frame is being rotated.

2. An electroplating device which includes a rotatable yoke frame, a tiltable barrel mounted thereon and having an open end, a perforated drum within said barrel having an open end, said drum spaced from the inner wall of said barrel, a plate electrode on the bottom of said drum, and a plurality of electrodes disposed around the inner walls of the barrel between said walls and the outer walls of said drum.

3. An electroplating device which includes a rotatable yoke frame, a tiltable barrel mounted thereon and having an open end, a perforated drum within said barrel having an open end, said drum spaced from the inner wall of said barrel, a plate electrode on the bottom of said drum, a plurality of electrodes disposed around the inner walls of the barrel between said walls and the outer Walls of said drum, and electrical connections from said electrodes through the yoke frame.

4. An electroplating device which in cludes a rotatable yoke frame, a tiltable barrel mounted thereon and having an open end, a perforated drum within said barrel having an open end, said drum spaced from the inner wall of said barrel, a plate electrode on the bottom of said drum, a plurality of electrodes disposed around the inner walls of the barrel between said walls and the outer walls of said drum, a spring contact shoe formed on the bottom of the barrel and connected to the plate electrode on the bottom of the drum, and a contact plate on the base of the yoke member to make contact with said shoe when the barrelis in a definite position with respect to the yoke member.

5. An electroplating device which includes a rotatable yoke frame, a tiltable barrel mounted thereon and having an open end, a perforated drum within said barrel having an open end, said drum spaced from the inner wall of said barrel, a plate electrode on the bottom of said drum, a plurality of electrodes disposed around the inner walls of the barrel between said walls-and the outer walls of said drum, a spring contact shoe formed onthe bottom of the barrel and connected to the plate electrode on the bottom of the drum, a contact plate on the base of the yoke member to make contact with said shoe when the barrel is in a definite position with respect to the yoke member, a power shaft connected to said yoke member, a bearing casing embracing said shaft, and a fixed conducting ring connected to said casing, portions of said. contact plate on the yoke engaging the fixed ring on the casing during their rotation, whereby the electrical circuit can be maintained.

6. An electrical device which includes a barrel having a perforated drum thereon, a plate electrode on the bottom of said drum, a curved spring plate on the bottom of the barrel and connected to the plate is in a definite position with respect to the electrode Within the drum, a yoke frame yoke, a fixed ring disposed adjacent the 1 supporting said barrel having a hub, an inlimbs of the U-shaped spring plate and sulating plate on said hub, a U-shaped adapted to contact therewith during the rospring plate connected to the said insulattation of the yoke to maintain the electrical ing plate the base of said U-shaped spring circuit. plate adapted to contact with the curved spring plate on the barrel when the barrel JOHN T. DANIELS.