US1513696A - Manufacture of gold leaf - Google Patents
Manufacture of gold leaf Download PDFInfo
- Publication number
- US1513696A US1513696A US671550A US67155023A US1513696A US 1513696 A US1513696 A US 1513696A US 671550 A US671550 A US 671550A US 67155023 A US67155023 A US 67155023A US 1513696 A US1513696 A US 1513696A
- Authority
- US
- United States
- Prior art keywords
- hand
- gold
- drum
- manufacture
- metal
- 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
Links
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title description 12
- 238000004519 manufacturing process Methods 0.000 title description 4
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000010931 gold Substances 0.000 description 9
- 229910052737 gold Inorganic materials 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 241000283986 Lepus Species 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 244000132069 Carica monoica Species 0.000 description 1
- 235000014649 Carica monoica Nutrition 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 201000005569 Gout Diseases 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/04—Wires; Strips; Foils
Definitions
- the statement is not suflicient to enable the reader to make gold leaf because it contains no direction as to how the copper sheet is to be gilded.
- Fig.- 14 represents a sectional elevation of one form of apparatus suitable for carryin'gout the invention and Fig. 2 i'san end view and Fig. 3 a side view of a modlfied portion of the apparatus.
- a silver band ai which conveniently is not less than 0.0005 inch or more than 0.001 inch, is originally wound up on drum b and is unwound therefrom by-being wound up on drum c.
- a bath of gold solution eY which may suitably contain 4 grams of the double cyanide of gold and potassium per litre.
- the liquid is prevented by surface tension eects from Howing onto the upper surface of the band.
- the anode is a carbon plate fperforated as at f and immersed in the gold solu-y tion at a-short distance ifrom the surface of the solution.; it is connected with the positive terminal of the source of electric current.l Suitable electrical conditions are an E. M. F. of 1.5 volts and a current density of 0.08 ampere per square decimetre of the silver ⁇ cathode. To ensure uniform maintenance of' bath as homogeneous as possible in respect of.
- an agitatorconsisting of a plate of about the same dimensions as the anode f may be raised and lowered continuously or intermittently by any suitable mechanism operating on its stem h but not indicated in the drawing; the perforations in the anode permit passage of the solution during the up and down movement of the agitator.
- FIGs. 2 and 3 illustrate a modified method of carrying out the invention, in which the face of the band which is to remain ungilded is pressed against a drum having an elastic surface, in which the edges of the band are more or less embedded thus reventing flow of liquid onto the said ace.
- the drum fn consists of a spool-sha ed core 0 slipped into a rubber tube p WhitJ is tied l tightly on to the ends of the spool. There is thus formed a pneumatic cushion -which can be inflated through a valve g of well-known construction.
- the band a is caused by rollers fr to pass around the greater part of I nordsee the drum ⁇ which nevolvesin the-loathe.
- the ofthe hand to press against the elastic rest of the apparatus resemlolesf ⁇ thatshown iii Fig, h v
- said drum having an elastic surface on itsperiphery, means for "causin the metal han to travel through said hat and means for causing one face of the immersed portion 'from which the metal han source ot electricity;
- partly immersed metal hand passes for causing the hand to i lie partly in the electrolyte with one foes Iof the' portion which is immersed presse against the elastic surface of said drum9 and means for iinn arting longitudinal movement to said han s.
- tipparatus for electrolytically on one surface a hand of hase metalgof which hand the other surface is unprotected hy an adhesive coating, comprising1 a containing a solutiontor the electrodeposi-4 tion of gold, a horizontally disposed drum partly immersed in saidsolution md to rotate about its airis, said drum having elastic surface on its-peri hery?
Description
Oct. 28, 1924;
F. DEMEL MANUFACTURE OF GOLD LEA Filed ct. 2.9
. zzr` fwemw" Jamel Patented @et 2%, 1924.
STTS
Y islaam.
rarest carica.
FRIEDRICH DEMEL, F TWICKENEAM, ENGLAND, ASSIGNOR 0F ONE-HALF TO'BICEARD 1 TmDALL LEIGHTO-N, OF HOVE, SUSSEX, ENGLAND.
MANUFACTURE or connl LEAF.
Application inea october 29,1923. serial no. 671,550.
To all whom z't concem:
Be it known that I, FRIEDRICH Dimm., a
' subject of the King of Great Britain, residing at Twickenham, ltngland, have invented certain new and useful Improvements Relate ing to the Manufacture of Gold Leaf, of which the following is a specification.
In United States Specification No. 198,209 dated 3rd October 1877 is described a process for making gold leaf by electrolytic deposition of gold. In principle the process consists in depositing the metal upon a suitable substance and subsequently removing Ysuch substance by heat or solvent. Copper in thin sheets is stated to be a suitable substance; the gold is to be deposited on one side of the sheet which is then to be iioated copper side downwardsm on a bath of dilutenitric acid; the acid issolves the copper, leaving the gold oating in the form of leaf. 1
, The statement is not suflicient to enable the reader to make gold leaf because it contains no direction as to how the copper sheet is to be gilded.
It is essential that the gilding shall be strictly confined to one face of the base metal, and since the other face has to be dissolved protective varnishes or the like are out of the question or greatly complicate the operation. By this invention a band or strip of base metal unprotected by varnishes or the like is gilded on one face only by bringing the face ,which is to be gilded into contact with an electrolytic bath under such conditions that the liquid cannot flow over the edges of the band on to the face which isto remain without gilding.
ln the accompanying diagrammatic drawings, Fig.- 14 represents a sectional elevation of one form of apparatus suitable for carryin'gout the invention and Fig. 2 i'san end view and Fig. 3 a side view of a modlfied portion of the apparatus. v
ln Fig. 1, a silver band ai which conveniently is not less than 0.0005 inch or more than 0.001 inch, is originally wound up on drum b and is unwound therefrom by-being wound up on drum c. As it leaves the drum b it is guided by rollers d on to the surface of ,a bath of gold solution eY which may suitably contain 4 grams of the double cyanide of gold and potassium per litre. The liquid is prevented by surface tension eects from Howing onto the upper surface of the band.- TheI surface of the band which is in contact with the surface of the liquid is made a cathode by connecting the metallic drum b with the negative terminal of a source of electric current. The anode isa carbon plate fperforated as at f and immersed in the gold solu-y tion at a-short distance ifrom the surface of the solution.; it is connected with the positive terminal of the source of electric current.l Suitable electrical conditions are an E. M. F. of 1.5 volts and a current density of 0.08 ampere per square decimetre of the silver` cathode. To ensure uniform maintenance of' bath as homogeneous as possible in respect of.
its composition an agitatorconsisting of a plate of about the same dimensions as the anode f may be raised and lowered continuously or intermittently by any suitable mechanism operating on its stem h but not indicated in the drawing; the perforations in the anode permit passage of the solution during the up and down movement of the agitator.
As the gilded silver band leaves the electrolytic bath it passes over a guide roller z into a bath of water lc and then round a roller 7c submerged in this water. It now leaves the water and is guided by a roller Z on to a drying drum msuitably heated by steam, electric current or otherwise, from which drum it is wound on the drum c. v
I Figs. 2 and 3 illustrate a modified method of carrying out the invention, in which the face of the band which is to remain ungilded is pressed against a drum having an elastic surface, in which the edges of the band are more or less embedded thus reventing flow of liquid onto the said ace.
rThe drum fn, consists of a spool-sha ed core 0 slipped into a rubber tube p WhitJ is tied l tightly on to the ends of the spool. There is thus formed a pneumatic cushion -which can be inflated through a valve g of well-known construction. The band a is caused by rollers fr to pass around the greater part of I nordsee the drum `which nevolvesin the-loathe. The ofthe hand to press against the elastic rest of the apparatus resemlolesf` thatshown iii Fig, h v
'lt has heen assumed in this description.
thatpure old leaf is .to be made.. @emmer-- cial gold eat is strictly s eakin ,an alloy and when this 'is' require the e ectrolytic fj loath'must he so modified in com osition that gold alloyed or mixed with t e requisite have nothin other-metal or metals, such as copper.. orf: silver or tooth is deposited. -'ll`h e necessary modifications are known to electrogilders and need not he detailed here since they to do with the invention.
Having t us fully described the nature offmy said invention and the hest'means l, hnovvforlcarrying the' same into practical electrolyte.,
, i apparatus .ai sisamiyaniy gating on one surface a loand of hase metal, ofl which hand the other surface is unprotected hy an adhesive coating, comprisingf an veleotrolytic-hath 'and means for causing the hand to travel through the hath with V'one only of its faces incontact Witliuthe' 2; Apparatus for electr'olyticallyv gilding on-one surface a loand of hase metal, 'of
" which hand the other lsurface is unprotected hy an adhesive coating, comprisingr an elecy trolytic hath and means includino an elastic surface against which oneface or said hand. hears, said means and said hand losing togather movable throu lisaid hathrl 3A Apparatus `for e ectrolytically gilding on one surface a. hand of hase metal, of which hand the other surface is unprotected loy an adhesive coating, comprising an electrol tic hath, va drum 'in said ath and-free to rotate'ahout its axis,
said drum having an elastic surface on itsperiphery, means for "causin the metal han to travel through said hat and means for causing one face of the immersed portion 'from which the metal han source ot electricity; gui
partly immersed metal hand passes for causing the hand to i lie partly in the electrolyte with one foes Iof the' portion which is immersed presse against the elastic surface of said drum9 and means for iinn arting longitudinal movement to said han s.
5., tipparatus for electrolytically on one surface a hand of hase metalgof which hand the other surface is unprotected hy an adhesive coating, comprising1 a containing a solutiontor the electrodeposi-4 tion of gold, a horizontally disposed drum partly immersed in saidsolution md to rotate about its airis, said drum having elastic surface on its-peri hery? a roller roller upon which said hand is Wound9 one of the said rollers being electrically conductc ing,'meansfo`r connecting the electrically conducting Vroller to the negative pole of a which said hand passes and causing hand' to lie partly in .thesolution with one face of the immersed portion pressed the elastic surface of:` said an electrode in the solution connected the positive pole of the source of electrioity9 and mevans for causing the metal hand to travel trom the unvnndingroller to the Winding roller.,
is unuound, of 1 e rollers overlln testimony. whereof ll have signed name to thisspeciiin'ation., Y
rninnaien naman,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US671550A US1513696A (en) | 1922-10-26 | 1923-10-29 | Manufacture of gold leaf |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2925622A GB211539A (en) | 1922-10-26 | 1922-10-26 | Improvements relating to the manufacture of gold leaf |
| US671550A US1513696A (en) | 1922-10-26 | 1923-10-29 | Manufacture of gold leaf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1513696A true US1513696A (en) | 1924-10-28 |
Family
ID=26259833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US671550A Expired - Lifetime US1513696A (en) | 1922-10-26 | 1923-10-29 | Manufacture of gold leaf |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1513696A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2497894A (en) * | 1944-10-14 | 1950-02-21 | Nat Standard Co | Method of electroplating fine wire of low elastic limit |
| US3178305A (en) * | 1962-05-04 | 1965-04-13 | United States Steel Corp | Method of making galvanized sheet steel coated on one side |
| US3368959A (en) * | 1963-03-29 | 1968-02-13 | Pedone Antonio | Apparatus for producing an endless sheet of electrolytic copper |
| FR2037132A1 (en) * | 1969-02-27 | 1970-12-31 | Usui Kokusai Sangyo Kk | |
| US20050189226A1 (en) * | 2004-02-09 | 2005-09-01 | Besi Plating B.V. | Method and device for electrolytically increasing the thickness of an electrically conductive pattern on a dielectric substrate, as well as a dielectric substrate |
| US20090020712A1 (en) * | 2005-03-15 | 2009-01-22 | Fujifilm Corporation | Plating processing method, light transmitting conductive film and electromagnetic wave shielding film |
-
1923
- 1923-10-29 US US671550A patent/US1513696A/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2497894A (en) * | 1944-10-14 | 1950-02-21 | Nat Standard Co | Method of electroplating fine wire of low elastic limit |
| US3178305A (en) * | 1962-05-04 | 1965-04-13 | United States Steel Corp | Method of making galvanized sheet steel coated on one side |
| US3368959A (en) * | 1963-03-29 | 1968-02-13 | Pedone Antonio | Apparatus for producing an endless sheet of electrolytic copper |
| FR2037132A1 (en) * | 1969-02-27 | 1970-12-31 | Usui Kokusai Sangyo Kk | |
| US20050189226A1 (en) * | 2004-02-09 | 2005-09-01 | Besi Plating B.V. | Method and device for electrolytically increasing the thickness of an electrically conductive pattern on a dielectric substrate, as well as a dielectric substrate |
| US7501048B2 (en) * | 2004-02-09 | 2009-03-10 | Meco Equipment Engineers B.V. | Method and device for electrolytically increasing the thickness of an electrically conductive pattern on a dielectric substrate, as well as a dielectric substrate |
| US20090020712A1 (en) * | 2005-03-15 | 2009-01-22 | Fujifilm Corporation | Plating processing method, light transmitting conductive film and electromagnetic wave shielding film |
| US8253035B2 (en) | 2005-03-15 | 2012-08-28 | Fujifilm Corporation | Plating processing method, light transmitting conductive film and electromagnetic wave shielding film |
| TWI386522B (en) * | 2005-03-15 | 2013-02-21 | Fujifilm Corp | Continuous electrolytic plated treatment method and method for producing conductive film |
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