US1865767A - Electroplating equipment - Google Patents

Electroplating equipment Download PDF

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Publication number
US1865767A
US1865767A US500459A US50045930A US1865767A US 1865767 A US1865767 A US 1865767A US 500459 A US500459 A US 500459A US 50045930 A US50045930 A US 50045930A US 1865767 A US1865767 A US 1865767A
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US
United States
Prior art keywords
tray
articles
container
rods
objects
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US500459A
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English (en)
Inventor
Kirchner Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
United Chromium Inc
Original Assignee
United Chromium Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by United Chromium Inc filed Critical United Chromium Inc
Application granted granted Critical
Publication of US1865767A publication Critical patent/US1865767A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B4/00—General methods for preserving meat, sausages, fish or fish products
    • A23B4/02—Preserving by means of inorganic salts
    • A23B4/023—Preserving by means of inorganic salts by kitchen salt or mixtures thereof with inorganic or organic compounds
    • A23B4/0235—Preserving by means of inorganic salts by kitchen salt or mixtures thereof with inorganic or organic compounds with organic compounds or biochemical products
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/16—Apparatus for electrolytic coating of small objects in bulk
    • C25D17/22—Apparatus for electrolytic coating of small objects in bulk having open containers
    • C25D17/26—Oscillating baskets

Definitions

  • My improved apparatus is particularly suitable for producing coatings or deposits of chrome, nickel or zinc on base metals, since the difiiculties arising in the production ofsuch coatings in other apparatus are effectively avoided. If the objects to be treated 30 are not to be suspended in the bath individualficulti'es are entirely eliminated by my im 1y, which requires much time and is thus very expensive, the electroplating would have to be carried out in tumblers or oscillating ap paratus immersed in the electroplating solution.
  • two diflerently acting groups of driving memhere are connected to the tray or trough. This takes place in such a way that one group of driving members engaging the tray at one , ⁇ end shakes, vibrates oroscillates the tray continuously, while the other group of driving members engaging the tray at the opposite end raises this end of the tray intermittently articles, such as into one or the other of two'limit positions.
  • two groups of driving members the. sup
  • porting tray which has alwaysa f'slight 'incllnation, one end or the other being in .a raised position, the objects move alternately from one end of the tray to the other due, to the shaking or vibrating action, whereupon after some time the far end of the tray is moved into the other limit position and the objects travel in the opposite direction.
  • This construction may be further improved. While in the just described embodiment of my invention two separate driving elements are required a substantial simplification is brought about by another feature of .my invention accord'ng to which; a single device is provided or operating the tray carrying the objects to be plated.
  • the tray is here movably suspended from rods and these rods are limited in their oscillatory motion by encountering stationary stops. When the rods come in contact with these stops at a certain speed they are suddenly arrested with a shock and the articles resting upon the perforated tray are thrown forward upon the ray.
  • Fig. 1 a perspective view of one embodiment
  • Fig. 2 a sectional elevation of. the other embodiment.
  • FIG. 1 of the drawing l indicates a tank containing the electroplating solution in which, for instance, a plate shaped anode 2 is suspended.
  • cathode serves a sieve-like perforated plate 3 with raised edge 4, tray or trough.
  • One end 5 of the plate 3 is connected to a lever 7 pivoted or fixed at 6 to which is hinged a connecting rod 9 continuously driven by an eccentrlc- 8.
  • the plate 3 is connected as the cathode.
  • the lever 7 maybe provided with an electrieallywell conducting core or wire enveloped by an insulating material. This core'is connected to the negative pole of a source of current. If preferred the lever 7 may consist of an elastic material and then be rigidly fixed at the point 6. In this case the passage of the current at the point 6 takes placebetween stationary parts. V
  • the other end 10 of the tray 3 is connected to arod 11 eccentrically secured to a disk 12 driven by a clockwork mechanism in customary and therefore not shown manner.
  • a further disk 14 On the drivin shaft 13 of this disk 12 is 10 mounted a further disk 14 on which there are fixed two diametrically-opposite pins 15.
  • the lower pin 15 In the position shown the lower pin 15 is in contact'with the armature 16 of an electromagnet 17 so that the rotation of the shaft 13 and 15 thus a motion of the tray 3 by the last described operation gear is prevented.
  • the circuit of the electromagnet 17 is broken, for instance at the contact 18, the armature 16 of the electromagnet drops off and thus releases the shaft 13.
  • the opening of the contact 18 takes place periodically during such short periods that during the next following completion of the circuit of the electromagnet 17 the shaft 13 is again arrested due to Y the pin 15 shown at the top in the drawing coming in contact with the armature 16 of the electromagnet 17.
  • the apparatus functions in the following manner: The objects in bulk to be electroplated are poured on to the tray 3, the raised edge or rim 4 preventing the articles from dropping off. The current and the driving mechanism for the tray 3 are then switched on. Owing to"the continuousv action of the eccentric gear-8, 9 the tray 3 with the articles upon it is continuously shaken, vibrated or oscillated. Since, as shown in the drawing, the tray or plate 3 is slightly inclined the objects resting upon it move towards the opposite end 10 of the tray under the action of the shaking or oscillatory motion. After some time the shaft 13 is released in consequence of the disengagement of the locking arrangement 15, 16 and the eccentric gear 11,
  • the tray 12 raises the end 10 of the tray which up to now occupied the lower limit position into the upper limit position.
  • the articles on the tray now move towards the end 5 of the tray under the action of the shaking motion imparted to the tray by the eccentric gear 8, 9.
  • This procedure is repeated until the articles have a coating or layer of the desired thickiiess.
  • the tray is lifted out of the bath together with the finished articles and immersed again after the finished $1 ticles have been removed and the fresh raw articles placed upon it.
  • connection between the rod 11 and the disk12as well as the connection between the rod 7 and the lever 9 and the attachment at 6 may be made detachable satbat after detaching these connections the plate 3 with the articles may be lifted out of the bath by means of the rods 7 and 11.
  • a pair of rods like the single rods 7 and 10 may be provided whereby a tippingover of the tray 3 during the electroplating process or when lifting the tray out of the bath is effectively avoided.
  • the sieve-like tray or trough with perforated bottom 25 connected as cathode is movably suspended in the tank 22 containing the electroplating solution 21, by means of the rods 23 and 24 pivoted at 26 and 27 respectively.
  • the objects to be plated are again placed on this sieve.
  • the rods 23 and 24 are adapted to oscillate or vibrate around the stationary spindles 28 and 29.
  • the drive of the sieve is effected by means of the wheel 30 rotatin continuously and on the face of which is pivoted the connecting rod 31 hinged to the sliding bar 32.
  • the bar 32 is passed through an eye 33 in the rod 23 and coupled to this rod by means of the springs 34 and 35. To stop the vibrating or oscillating motion of the rods suddenly stops 36 and 37 are provided.
  • stops are preferably made adjustable to enable the shocks when arresting the rods to be controlled and to be made stronger or Weaker according to the size and shape of the articles to be plated.
  • This object viz. the adaptation of the apparatus to various objects, may also be attained by providing a plurality of plates or trays with perforations of different sizes.
  • the anode 38 is by the aid of the rods 39 and 40 suspended above the cathode and the current is supplied by means of the contacts 41 and 42.
  • the supply cables may be directly connected to these contacts so that sliding contact members and easily breakable fiexible connections are entirely avoided. If the positive pole of the source of current is connected to the contact 41 and the negative pole to the contact 42 the spindle or pivot pin 27 and the rod 40 must consist of an insulator. It will be understood, however, that the insulation between cathode and anode can also be effected in any other well known manner so that shunts to the rods 23 and 24 are avoided as far as possible. 1
  • My improved equipment is particularly suitable for producing layers or coatings of such metals which require a high current density or voltage for their deposition and in .which even a short interruption of the galvanic decomposition of the electrolyte has an adverse effect upon the quality of the deposited metal coating or layer.
  • Such metals are in particular chrome, iron and cobalt, but even'with nickel and zinc similar difficulties arise.
  • the treatment in the improved apparatus is particularly suitable for objects or articles capable of rolling or tumbling, such as screws, balls, pins, rings and the like.
  • the objects should preferably be placed on the erforated shakin or oscillating tray in suc numbers that t 'ey form a single layer only and the tumbling of articles over one another is avoided.
  • the perforations in the plate or bottom of the tray or trough must be provided in such numbers and be of such sizes that the objects cannot be arrested for any length of time as otherwise the galvanic deposition would be interrupted at the place of contact between the plate, tray or trough and the object or article.
  • a container having an extended substantially flat bottom and means for connecting articles resting on the bottom thereof cathodically to a source of current, an anode, means for supporting said tray-like containerin an inclined position and for periodically reversing the direction of inclination,
  • said means I for supporting said container comprises a crank, a connection between said crank and container, and means for intermittently operating said crank.
  • said agitating means comprises an arm connected to said container and a rotary crank connected to said arm.
  • a container having an extended substantially flat bottom and means for connecting articles resting on the bottom thereof cathodically to a source of current, an anode,
  • Apparatus according to claim 4 wherein said means for oscillating said container comprises swinging arms connected at opposite points to said container.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Food Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Coating Apparatus (AREA)
US500459A 1929-10-18 1930-12-06 Electroplating equipment Expired - Lifetime US1865767A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES94428D DE550284C (de) 1929-10-18 1929-10-18 Verfahren zum galvanischen UEberziehen von Massenwaren und Einrichtung hierzu

Publications (1)

Publication Number Publication Date
US1865767A true US1865767A (en) 1932-07-05

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ID=7518690

Family Applications (1)

Application Number Title Priority Date Filing Date
US500459A Expired - Lifetime US1865767A (en) 1929-10-18 1930-12-06 Electroplating equipment

Country Status (3)

Country Link
US (1) US1865767A (de)
DE (1) DE550284C (de)
GB (1) GB353337A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721834A (en) * 1951-05-23 1955-10-25 Sylvania Electric Prod Electroplating method and apparatus
US2830946A (en) * 1953-10-15 1958-04-15 Olive B Pleadwell Electroplating apparatus
US3332869A (en) * 1964-10-05 1967-07-25 Hamilton Co Needle tapering apparatus
US3397126A (en) * 1965-10-14 1968-08-13 Sel Rex Corp Plating of small parts
TWI765806B (zh) * 2021-08-13 2022-05-21 顏振益 扇出型面板級封裝電鍍之電鍍設備構造

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497445A (en) * 1967-07-28 1970-02-24 Economics Lab Apparatus for cleaning and detarnishing silverware
DE102004018412B4 (de) 2004-04-16 2018-12-13 Yuriy Lebedynskyi Verfahren und Einrichtung zur elektrochemischen Beschichtung von kleinsten Partikeln
CN103834981B (zh) * 2012-11-21 2016-03-16 青岛运城制版有限公司 铜分镀钛栏

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721834A (en) * 1951-05-23 1955-10-25 Sylvania Electric Prod Electroplating method and apparatus
US2830946A (en) * 1953-10-15 1958-04-15 Olive B Pleadwell Electroplating apparatus
US3332869A (en) * 1964-10-05 1967-07-25 Hamilton Co Needle tapering apparatus
US3397126A (en) * 1965-10-14 1968-08-13 Sel Rex Corp Plating of small parts
TWI765806B (zh) * 2021-08-13 2022-05-21 顏振益 扇出型面板級封裝電鍍之電鍍設備構造

Also Published As

Publication number Publication date
GB353337A (en) 1931-07-23
DE550284C (de) 1932-08-04

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