US1049712A - Method of and apparatus for treating plastic material. - Google Patents

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A. B. HIQLBIG. METHOD OF AND APPARATUS FOligTREATING PLASTIC MATERIAL. APPLICATION rzL fl-n MA! 1;. 1511v 1,049"712 Patented Jan. T -1 ALBIN BERTHOLI) HELBIG, 0F FRANHFQRl-O LT EflflMAlN. \GERMATX Y ASSIGNOB TO THE FIRM OF .FELZZNEH 6'. ZEHGL'ER. 01? FRANK.FQET'QN THE-MAIN. GERMANY.

METHOD OF .KNI') AIPBARATUS FOR TREA'FENG PLABL'IC MATERIAL.

Application filed. Kay 19 fort -on-thelllain. (lcrmnm, v am M olhw riihiw hmi to iw ow-rvomc that. arose from address Vnrrcntrappflmor N '53. haw

Epcclficalion of Leticia Patcni.

L92; niri l ilicv r invented new and iiwfiil lmprnvcnicnh in 1 Methods of and All lmruius for 'l'muiii': Plastic Mali-rials, of which lhc foll wing is a specification. Tho method of lhizi inxcr i-m ri'w f r the preparation of plaslir iiin-w-- Ahi'llwi for tho purpose of mvrclx rcn-hrinu illi mass hOIHOEEIN'UUfi or for Ml 15 it mning: of masses; f (liliciw -l winking film minions and .lrvinc ilzc um:

Exicrnnlly. tho machine iaiiipl yu-il boars Il certain resemblance to a so ull l liminmill which howcvcr. lacing onl inivmlw! and only suitable for r shing lmrci whstanccs, has 'nccn modified lo Magi; "ll; for;

the new method. 'lhinew lllii lllll YFIIKI'P over, contains a series of rotary hum-r5 iiiranged like the Fipokcs of a whorl whii h i talc at a very high which has two opcnings. one for ihc inser- (ion of the crude mass and tho ol'hcr for ill charging the product.

The pe uliar melhoil of opcmlion i.-; chairaflc'i'izcil by (hrcc nmcl fczi'im'cs. The mass, in lhc form of lumps. through. a. charging homwr. Tnrlci'ncmh this charging hopper the healer: rouiic ill thrown in spew insirlc Owing;

such a high rate of SIwHl. for cxainplc 1000 rerolutions pcr minm'c. that the. lumps of clay (for inslancc) lhi'own in cann t hill down between the hunters hut are at firq maintained in a stoic of uniform fiolution by the heaters which follow one anothi-r in succession. Each of the healers now Srlnjim a thin bl'rafum from lhc undcr hill? of the lump of clay by means of il:- from eilcc. the action resembling that of the rolar (uttcrs of a planing machine. Those thin shavings are transported by the hcatcrs from the opening in the hopper into a portion of the machine that is surrounded by a continuous cylindrical wall; and here these ncrancd'ofi flat slices or plates are brought into powerful frictional contact with the surrounding cylindrical wall in conswucn c of the big;

centrifugal force. In lhh-s way each of the slices or cake-like pieces cmnplchzly broken down into small flakes. Thine flakes are ihcn carried onward by tho ax-mt Pinon! Pd Jan. 7. 1913.

. 19M. Eerial No. 828.281.

(1 riiml M "Ylili throng iihi h thcv are pimiwi l lziim niizill v mi'iiiiril under the iorce.

tlw inoi-f. d k; lmriivtcr of the mass and thc high n'clo uii vof l' izilion of thc ham incrs. "lhc piccm i:i, wi from i'hc inlrm iim'wl lumps arr forrwi ouiwaml by ilw cclr irifnuiii f rt-4:. 'iul would llli l lo sli k on ilr hulk of th limping homwr. :onl par; iirulm'ly tlQfillllr-l rim mini-in why of tho cylindri al working hzsmhci'. "ln xiii? 2!. Haunt 1i roll-Pr ll JF lawn z'ii' wiiigr'wl of liliinnit iil fil forma gwmion of he wall of o i'sof'rw-l. against which rollcr tho lc lfiili l olling: or dim-s of clay imgiingzc. ll; the rotary: motion of lhis 'i'ol er lhc sli cs which or! projwhwl again-l 21ml :ulhcrc to it. are mi in tlw cnlcring'z cdgc f l'nc i'i -iriml caving Zllhl are there carricd on ffiz'lhci in lbw lwnlcm. A, similar pro css goes on during! the escape of tlic fine fiakcs from thv cylindri al casing. If these flakes in) #inmlv :illowcrl to diswhargzc into areccptuclc. they rcunitc to coherent masses. sincc the tangential velocity of ejection is extremely high and insufficient to cause the i(' j(ct(e(i flakes lo coalesce again. In many instunccs this is undesirable. especially when the flocruicm form is intended to be eiiilhccd for di vinp: tho clay quickly. In such can. .ihercforc, the. flakes are also allowed to ini'pin sie against a rotary drum, com'cycr. hell or the like moving at such a \clo ity that the flakes areideposiled singly side by side without hccoming rcunitgxi and these flakes are then detached froin the drums. by means of a scraper.

The new machine is illustrated in the accompanying drawings. in which" Figure 1 is a. ceniral longitudinal section and Fig. is. a transverse section through the beater mechanism.

a are the heaters which are secured to the I'cvolYinQ' shaft 1) in lhc known manner; 0 is tlw cylindrical casing which extends coniiniiously from the, coloring edge a to the wit Edge 6.

j is ihe charging hopper and on the side of this hoopcr that is sitnaled in the direclion of rotation, is mounted Hie iced roller 9 which hikes up tho particles dcluchcrl from tho 12855 by the ljzflalfilia' and projcclcl in the 11c direction, and feeds them to the entrance edge (1, whereupon the process already described goes on in the section between (i l eahing damn of the separated fragments into fine flakes. Beyond the edge e the flakes travel in the direction indicated by the arrow, on to the surface of the rotary drum Ii and remain sticking to the said sur face untii they are detached h the scraper l1: and fall down one by one. hepar'ticles may be dried in any suitable. orpreferred manner either before or after removal from said surface.

ltwill be evident that the machine may be modified in various ways, withoutaltering its novel method of action or departing, from the spirit and scope of the claims.

Now what I claim and desire to secure by Letters Patient is the following:

t l l i 1. The process of comnunuting moist plus l tic material which consists in slicing the material fr m lumps commiuuting the slices of material hy limiting and friction. sprcading the moist comminutod particles over a surface 15lll).- it\lllizlll)' in a single layer where in the particles do not owrlap, permitting the particles to become dr and then removiug them from said surface in such manner that they remain in comminutcd form.

2. In a machine for ct'nnminutiug moist plastic material, the combination of a casting provided with iulct and outl t opening the the arrangement of said inletand outlet opening being such that the moist plastic material is introduced into the casing radially and projected therefrom tangentially with respect to said rotating heaters, at revoluhle cyiinder arranged to receive the tangentially projected particles and means for removing the particles from the surface of said cylinder in comminuted form.

3. In a machine for connninutin moist plastic material, the combination of a par- 'ally cylindrical casing provided with inlet and outlet openings, heaters adapted to :gential planc to receive the projected comportion of said ca ing between said opening j being cylindrical, lrcutcrs ilXlilllf arranged with respect to said cyliiulrical p rtion o the asing. the ends of said heatcrs being adapted to rotate in close proximity to the inner surface thereof \vhcreh v moist plastic material may he comminutcd thoreljelween,

minutcd particles, said cylinder being adapted to rotate so that projected particles strike on StIt'('t? Sl\'t portions of the surface thereof. and means for removing the particlcs from the surface of said cylinder in such manner that they remain comininuted.

In tcstimony. that I. claim the foregoing as my imcntion. l have signed my name in prcs'cnco of two witnesses, this eighth day of .\la v. 1911.

'il ncsses: I

J RAN iRUND, CARL GRUND.

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