US934704A - Process of depositing metals. - Google Patents

Description

zen of the United States, residing at iNGW oxygen from the zinc powder and favors les 's wherein a finely divided inert substance aaa, toe. 2

' Kohl-airing:

of Pennsylvai 1 ia, have. invented certain new and useful Improvements in Processes of esses in which zinc orv "metal toabe UNITED STATES" PATENT GAMER 'ZZIEME, or NEW GA STLE, FENNSYLVANIA, "AssIGnoR: baqoaammnimo GEORGEPATTEESUN, ONE-SIXTH 'ro TO CHARLES JOHNSON, ALL OF NEW To dll whom it may concern I B- it'knownthatI', CARL HVZIEME, ajciti- Castle; in the county'of Lawrence and State Depositing Metals, 'of Which the "following I IS a specification, j s 1 v My invention relates to that class of procapplied. to metallic objects,s'neh as sheets of iron, to provide a coating of-Surface thereon is utilized 'inoxidi'zed form an'dbrought to and held in the -presence of the metal to be coated, mixing the "coatin'gj metal with 'asnitabjle vehicles-. 7 g

It is ,known that in the use of'zine int-par tially oxidized form, commercially known as zinc powder, the depositionsgis favored by the presence of carbon Which'takesfup the vaporizing. of the zinc. In'anapplication Serial No.- 400,4t56,"filed by me, jointly with George L. Patterson and Thomas L. Mornes, is described :a proc-;

is usedaas a vehicle for the zinc dust,-in a slip or bath which also contains finely dividedcarbon. In my applicationSerial No. 419,170, is describe'dja process of depositing 'a plurality of metals, or an alloy thereof, by niakinga slip 1' bath containing the metals and a suitable vehicle. My present invention "has for its object t facilitate the application of the metal to be deposited-as a boating and it consists in mixing the metal ivith'avehicle and giving .to the mixture; such physical form .a'sfv'vill adapt it to behandled' and laid upon or appliedto' the surface to' becoated; orqin" loading the 'metalrupon a vehicle thathas bee ng'iven such, physical form as will adapt it for use in the manner stated. 1 1 ,.My present invention also consists-in utilizingv as' the' vehicle; 'oI", as ,the ,base from which the .vehiclewist onstrlioted, a "material; suclrv as vegetablamatter or cellulose, which 7 rnocEss or pEPo'sI ING 'ivin'rans.

Specification ofuietters Patent. v t nte e a li p iation filed myznfleos; Seria1'Nofi34,147.

A i' In carrying out can be worked up into a p llpj paper, so called, being,

,lnerely for the purposl' ticularly advantageous fo 'cessOlioXygen; This idea iinglthe sheet or staekoj'f Will -be decomposed by the heat o f the process fobjectto be'coated; in its ab jjven'ieng gthey ivco WILLIAM rtfxmnnangann QN EeSI-XTH CASTLE, rENNsYLva IA' find that vegetable tnatte theJpurpose. When the are inthe form of of-aplurality of th ckness; whenlqutili'zje o 'i' 's n coat twolopposedracesth njyv I gle surface. By thus producing ed; with the. properpro The sheet form of "combined M oxidizing agent and coating i n e'tal, f rlathe economical surfacing of sheet metal "bc'au se t .eilitywhicli'it a ifords of. co iv ith'the sheets by'stacking it "an; in alternate layers. 4 A ,1 *If the-objeetgor articl or surface obo coated is of irregula-rfo in he sheet material may be softened in a suitable liqu'id lso asto adapt it toibe' laid oiilthe irregular 'sur "face; orthe'pulp Inightbeutilized, ns

pui'pose before rolling .it-, in t"o s1 ing on the pulp and pressing Contact;

That portion of vvli iol Yinsubjecting.the'componnded'fc teri-al" and a the article to he coated perature sufficient to vapor and jfi'edthe zinc, should be carried on ofat nosp'heric air, in order 0. i letl e m t-t;

be, inoas plastic inert substance that could be laid on invention. Take three parts by Weight' ofthe article commercially known as zinc dust,

a stack of metallic sheets, inclose the comfeet in height, would naturally require a v comparatively'low temperature before again gen from any zinc oxi'd which is present in --carrymg--out my 'tion of the inve'ntionand the description of the reactions, so far as known to me, may be to be heated through. .A stack of sheets material in it, to support the described reacand hardened to retain its form previous to 'While I do not ntend to limit myself to rocess, and am.-not-pre-" pared ,to explain ingdetail thechemistr of the process, the following specific app 'ica-f takenyas one illustrative application-of the or any other metal or combination of metals which it is desired to deposit, to ether with one part of paper pulp, mix well and work the mixture into thin sheets resembling rough paper, Then lay a sheet? of paperupon a surface or between't-wo' surfaces to, be coated or'be'tween each pair of opposed faces in a pounded. article and coating material under conditions suitable to. exclude the atmosphere, and then subject the same to,-say, 800 to 11200 degrees .t'emperati'ire Fahrenheit, the temperature to be varied according to the nature of the deposit desired, This'temperatureis to be continued for a period vary-1] ing, ordinarily, from one hour totwentyfour hours, according to the mass of metal with intermediate "facing material, say four longer time to heat it throu h and complete the process than 1-, 2, 3 or a ew sheets. After the necessary heating has been accomplished, the work 'is'allowed to cool to-a permitting access of atmosphere thereto. The cellulose or vegetable matterof thepaper, when subjected to heat, partly breaks down "or decomposes and produces a distillate of wood smoke or creosote, which escapes, and free carbon which is left. -The carbon acts as a reducing agent, taking up the oxythe mixture so as to leave metalliczinc which then deposits upon the surface to be coated.

It will be seen from the foregoing description that the combined vehicle, andmetalto be deposited, constitutes a carbonizing and metalliferous facingmaterial suitable for application tothe surface to be coated.

It isnot necessary that the fiber which forms the base of the vehicle or facing material shall be made up entirely of vegetable fiberor carbonizing material, So long as there is a sufiicient proportion of carbonizing tion, the remainder maybe of any other suitable pulping or felting material, such as mineral fiber or asbestos. Or if a suitable carbonaceous material is held in the vehicle ment throughout.

heat.

or surfacing material, the physical structure of the latter may be made up entirely of such I mineral fiber or. other felting or pulping material. Experimentally it is found that the material, of the .vehicle'or; paper-like facing material. 1s better for being made up in art of mineral fiber for this prevents crac in and shrinkage incident tothe carbonizing. o the vegetable fiber which leavesexposed lines orareas on the surface to be coated which is thus. prevented from receiving Claims:

uniform treat- 1. The process of coating with metals which consist=s in layingon the surface to 1 be coated, a coherent [sheet cf "fabric containing carbonizing material and loaded with the metal to be deposited, and then'subjecting to heat.

' 2. The;- process of coating with metals carbonizing material; and loaded fwi th metal tube deposited in partially oxidized form,

and then subjecting to heat.-

' 3. The rocess' of coating with metalwhich consists in laying on; the surface to be coated, a coherent sheet of fabric containing carbonizing' materi al and loaded with zinc, in the form of flue dust. to deposited and then subjecting to..heat.'

4; The process of coating a surface with metal, which consists in applying between;

said surface and an adjacent surface, a sheet of fabric containing a carbonizing material comprising a suitable vehicle and loaded 4 with meta obe deposited and their subjecting to heat sufiicient to carbonizethe carbonizin material and deposit the metal mingle therewith.

5. The, process of depositing" metalupon "a plurality of surfaces which consistsin in- .terposmg between said surfaces; a coherent posed in pairs, interposing between said opposedfaces coherent sheets of fabriccontainv in carbonizing material, comprising a suitab e vehicleand loaded with the metal ;to' be deposited, an d then subjectingthe pile to 7. The process of depositing metal upon a pluralityof sheets of .n-aterial, which consists in stacking the sheets with theirizsnrfaces to be coated in opposed relation, interposing bet-weenthe said opposed faces, coherent sheets of fabric-containing carbonizing material, comprising a vehicle and metal to be deposited. the said vehicle and metal being mixed in finely divided form and then subjecting-the pile to-the action of heat-.-

8. The process of depositing metal upon which consists in laying on the surface to be 7 coated, a coherent sheet of fabric containing,

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a plurality of sheets of material, which con- The foregoing specification signed at sists in stacking the sheets with their sur- Vashington, District of Columbia, this 21st 1e faces to be coated in opposed relation, inter, day of May, 1908.

posing between said opposed feces, coherent CARL H ZIFME sheets of fabric, containing carhonizing ma- J terial and the metal to be deposited and then In presence ofsubjecting the pile to the action of heat With HEBVEY S. KNIGHT,

the exclusion of air. EDWIN S0 CLARKSON.