US1255819A - File. - Google Patents

Description

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To Q53 whom Macy concern:

Be it known that l, WmLLiM-L. Mereu, e citizen of the'United States, 4and s resident ef Brooklyn, county of Kings, State of New York, have inventel certain new :incl

usefullmprovemen'ts in Files, o' which the following is a specification. The present .invention relates to means whereby cutting teeth, particularly on fine toothed files, such es the sri-called manicure files, may be protected in an eiiicient manner from rusting, anclet the same time the .File may be given e permanent, pleasing appearance. In les of this charecter, wherein the teeth are very smell, it ries been heretofore the custom to plete the article with mieke But eleetrolytieally deposited nickel, until it .has been buiecl, is clerk colored ariel unsightly, especially when deposited in breken surface, sueli as ther-teeth 'of -les Itis impossible to bu such nickel deposited .en the walls of these fine teeth because theT spaces are so small, end beeeuse'the teeth are so. fine that bung would destroy their cutting edges. nferder te evoiclv this unsightly sppearence, silver plat-eg iis-s been rer-sorted to, but this is ineiectual, bee'suse, :iltlzeugli 'the electrolytically depesitecl silver is White 'L1-nfl pleasing in appearance ou elle cu 'ng tee'li, nevertheless, it 'is' relatively expensive cause or the velue of the silvei,'and' moreever, s-.isowell known, silver-piemel articles readily tarnish nucl while smooth tarnished. ilver surfaces may be heighten-eel by rub,- biug, obviously in the ease of the tile surface, this 1s impossible for the rese-ons pointecl out above in reference te the polishing: the nickel deposit.

lllaile there are some of tiiscommeiiei metals, such es tiri or zinc, "Wil-le@ erre white when electr'elyticelly flepesitefl eetl ai-'L ieli de zot tarnish in tl'le air, plating with eueii metals yis not'commonly res-'creed te ier any 'rtiele 4because -the eieposit is 'so .kind

edlieresso loosely 'tethe metal en which i these metels overcome the cliilieulties 'here i v 1 tofore found in the plating er file teetn, :cer

teeth ef files, es effective adhering;

` ppleatlsi; fale Merch-30, im?. Serial En. 155,548.

fsuezi Vwells as nickel is in adhering te ordi-f nary smooth suiiaces, this result being obtainerlbeeause, by reason of the iri'enfesso tile t-eetl1tl1 e pleted Wells thereof are 'never touched by anything, such as the linger nails on which the tiles are used, bee-ruse the cutting edge ofthe teeth keep the surface which is being lilefl, away from the Wells. ln the cutting process, the cutting edges will lieve the plating removed by friction., but thesecuttlng edges are .so small com Jared with the tetel aree tli'e file surface that the appearance et' the file is not mete rieliy changed, and when such s ile is electrolyti illypletetl with tie, for iristsnee, it Vmaintains afirman-swg pleasing', white eppe nce, the 'tin not being 'sribect to ettaelr by oxygen er sulfur iii the air."

'le the accompanying drawings, l lieve illustrated one kind 01"' article 'to which my invention may be applied, Figure l showing eV side eleves-lenses Eig. 2 an edge eieveticr: of su ordinary manicure ile iu ifliiel:1 if) represents the file surface and llsncl,

the fist, smooth sueees usually left et either seid of 'tlie ile surface. shows en enlsrgecl section @if 'the cutting teeth of such file in which l' represents elem-eppeaislg enel anni et tlf-e seme time permanentprotective esst ne pertieiis ll' e4 l2 may lilies ne lie costing of jie'sel eme-.nil over the 'pe *-iens l l2 only, the 'pertion 1G being pretected merely by the costing si tin. .This

may' be eeeerraplslietl by .seating the portie-n' 0 'wit i seme resistant while tie'portions 1i emi lil ere seing platecl and their plstiig'ell ef tile eticle with 'the coating of tin. En

the burnisii'ng o parte 3tlfn the nickel surface nel?e Il lisse fossil tin te be effective for pre-cess, this eoating of tiri would be removed,

l tu produce the usuelnielfel finish. l cle may else be pre-:luces having my purposes, there are, of coursez other cheap forms of metal which are vvhite and soft when eleetrolytieally depos1ted, and which are also not readily affected by oxyen and sulfur or other gases of the air. uoh another metal, for instan'oeis zinc. Plainly such metal may he used in place of the tin which l' have described as my preferred' kind of plating.

I claim:

l. As an article of manufacture, a netoothed le having the ,non-cutting portions only of the Walls of the teeth covered With e loosely adhering coating of a soft meta-l which is White when applied as such coating and which is substantially unaffected by atmospheric gases.

2 As an article of manufacture, a finetoothed file having the non-cutting portions only o the Walls of the teeth covered with an electrolytically deposited coating of tin.

3. As an article of manufacturej a netoothed file having only a portion of its surface provided with teeth, the non-cutting portions only of the Walls of the teeth being covered With a coating of electrolytically deposited tin and the noli-toothed portion of the file being covered with a coating of nickel. A

4. As an article of manufacture, a fine toothed tile having the walls of the teeth covered with a coating o" nickel and an eleetrolytiea1l)T deposited coating of tin over the nickel coating on the non-eutting po1- tions of the Walls of the teeth WLLAM L. i/M`IPIPAT.' Witnesses:

C B. LAisoN, CHARLES Riiaoimn.

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