US240A - Charles goodyear - Google Patents

Description

" and also-of blcaehinglthe same and adaptingapplicable to. that material either in its natusheets or employed-ash. coveringto cloth or othcrsubs'tances; and I doherby declare thatthereof.

-'action of the 'acid- S0lllIl0ll,-lll0l especially cloth may in this-case be united together at the ed ges and at thecenilsgseja-s to for-m as'ort of bag;

capable of being dipped intothe metallic so.-

lution without its-interior being brought into contact therewith. I-he metallic solutions are fuot by anynieaus equally'etfcctive in destroystronger acids being in all cases preferred as being perfect in their ac-tio t'ercntwhat liind o't"metal'is' employed. The strong nitric acid undiluted: is that which I in general 'prelcr,.aud among the metals I prefer eithcreoppcr or bismuth, forming a nitrate of'c'opper or a nitrate 0t bismuth. as the'full eflccc' is produced by these'solntiousju from Y one tolive minutes. After the actiou is though 2'- to-be eoxn'p'lcte the article actedupon .is to he .wasl edwith water, so as to remove the whole d n -antes momma,

.i Q'FF c ADHESlVE PROPERTIES,- AND ALSO 0F BLEAC HI'NG THE SAME; AND TllE R E BY A'DAPTING lT T0 VA RIO'US USEFIJL'PURPGSES. v

i S ecificationfiirniing pa'rl: of Letters Patent X5. 210, dated Irma-"1r, I537.

.To all idiom iLmuy emit-cm Beir known that I, (Silliness .Goopvsiin; of'the' city of New l'orlc, in the State of..\"ew York, have invented or discovered a new and improved mode or'proccss ol'divesting cao'ntchouc, guunclastic, or iudia-rubber of its adhesive properties, not only atthe surl'ace .-.hut.-. for some distance-below itfahd under certain i circumstances throughoutits whole-thickness,

it to'various useful purposes, which process is mlstate orafter it has been dissolved in any o t'-t h'e known solvents thercoif and made into the following=isa l'ullzu-nl exact description I employ the various/acid solutions-of the metals, either sat urated or-partially satu rated and with such metallic solution I wash over the surface of the caOutchOuc, of which I mean Q to destroy the adhesive property 3 or, instead l of washing the surface of. the caoutehouc, Ii dip it or the article coated with it into sucli'a solution. It the article is CldilgtiOiltCtl on one side only with the solutimr it is'nccessary in general-to protect the .ucoated'-sidc from the whenthe more corrosive acids are used. The

ing' the adhcsiveuess of the.caoiitclioliqttlie,

nor is it indifot the acid SQltl'ilOll,'ftllt1 it will be found that "'in a less 'tion be? semhle that ol soft cloth, but that the surface may be worn iotf to a con'sidcmble depth and the new surface not' manifest: the slightest teudenc v.to adhesivcucss. It indeed so't'ar altered in its properties as to resist to'a cou- 'siderable m n; the action of those m'enstrua h v.\vhich it isorilinarily dissolved. Itniay, for example, be washed in spirits of turpen tine or intheoil of sas'sat'n s without being rendered tacky, and it will equally resist the action at soliir' oiaot' 'artiticial heat under all ordinary -.r em pera'tures.

I have tlmst'ulLvdescribed what I believe tobethe best-modes of carrying u y'discovery into effect by the use of metallic solutions, and have said that they arenot equally ellicacious. Son c ot'them I am well convinced would not answer the'purposc at al-l as the acetate of lead, for example-and probably all the solutio'us of metals in the vegetable acids and there. are some Which will; produce the ell'cct:

but these are dilfere'uces which it is not necesperfce-t mariner than thcnitrates which I have named,- or which will require a i much longer time for their complete action;

sayy or possible to particularize; neither are they essential to a full knowledge of the means which I have adopted to produce the intended effect. I havcalso spoken of. dipping the ar--- ticlc to be acted upon into a metallic solution,

or bf washing its surface therewith but other modes may ivedevised-ot' producing'the same 'cti'eet by means substantially the saine. I have sometimes covered the surface of the caout- CllOllC \Ylll1 the metallic powder known by the.

the sonic efl'cet as the washing it u ithor dippiugitin thenit-tallic solution, such a soluin this case immediately produced th'caction ot the acid npo'n-thc'metah. It is a common practice toaddscithe of. the ab-- sorbeut earths or some pigment to 'the dissolvedieaontehouc,.anil whenthis is done-the metallic solution may he rcadilyc made to op-- erate'toa greater or less extent throughout the wholemassofa sheet-ot'considerablc thickp Instcariolthepmcrssabovedcscrihcd,orprcnot only the snrlaceof the caon-tchouc uftllre-v para (org to it, I con binc thecaoutc'houc with' lovving it to stand at rest,

' in a state fit for incorporation L have found this" earth prefer? -qiiicirlime,'as

ofthe others'in tittiugthe-sheleh aide to either ".inix and agitate it with so much water-itsthat it shall not be thicker than-milk; when, on ala'll the'ourser parin it, will rapidly-subside. containing the=tiuer particles' is then to he pon-reii off and the tine lime allowed-to subside. The \vaterlet't on the surface of'this being then poured oft, it iso'htaiued' ith the'eaoutu ot'.thiek paste into which nufactnrer preparatory sheets ticl es contained The upper portion;

chouc in that fort it is brought by the ma to its beiugrolled'into v invention is-5' -1 .'"Ihe destroying o potty h articles as have red out of the same material, and is rendered applicable to a va; riety of new purposes hitherto unattempted; or attempted without snecess. 4

e'n mees ooom erin.

hiauce to sue een' mannfnctu little reseiu heretofore l) whole' thickness by the 'uiet ill-ie 01mm; but, "tie;o'r'iudia rnhber, but also to a'coiis i lerahle hesidest'his,thelilnehtis the'p'ropertyofhleael r extent helon the-sur'i nce, \vhether the some be 7 Iing' the caontehouc and of gifiu wit a, s'ur-'- inshcets uue juue'eted pith-cloth or other: snh- I 'faeeand-'testure uilapting it to the "receiving stances o t-'\rheu usjeillasfa coating therefor impressions.t'rouicopper pla'tes'or. by other by the-application tlreretdot' an acid',solution; uiodes of p rintiug; rendering i t 'either alone 1 ot'lthe ru'etnfs, substantially in the manner set: or when tus'edas-aeoatjng for cloth, applicable forth f. j r to the purpose(if-printing ehartsoriither de- The manner of preparing anilqineorpm; vices. I The taonteh'oueso prepared with lime, rating'litue with the caoutchoue-paste {or the will however, be rendered adhesive by the acl-p'nrposeot' bleaching-it and giving to the su'ets tion of heat or of solvents, unless the metallic a formed of -it n'colo'r and "texture adapting it solution'be appliedto it, inii'hieh case much to receive printed imprcssiotis anH rendering of the whiteness eonnnunieated to it by the t it applicable to vnrious other. purposes, either bleaching property of the lime will disappear. without iii vvith the treatment by the metallic I however view in discoveryot' the action 3 solutions, as herein set forth; of lime in the ivay in which-I have applied it 3. .-\san eutirelynewmannmctn're,the sheetas of great importance, 'and"-thereiore proceed 5 caontehouc prepaied by the \vithiindescribed to' point out the manipulation ivhieh I have process of treatment by the metallic solutions; found necessary. to its successful use. I slack i a herein described, as it is thereby so'esseria. portion ot' the v finest i' iiieklimc, and then 3 tiaiiy changed in its properties as to-bear but

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