US1778860A - Grinding burr - Google Patents

Description

' the innerendsof the ribs 26. Theteeth" 28 remainder'of the circumference. f Thisadf are formed bycutting a seriesA of grooves ahead ofthe respective ribs 24 and 2 6, these groovesv being parallel respectively to saidV lribs in succession Aand becoming shallowei'` l ditional space provides for entrance of the 21@- ends ofthe ear-s of-corn into: the space beftween thetwofburrs.y As previously stated, y the-stationaryub'urrfis similar; to the rotating r 'burrrrwhichhas beendescribed in detail. Figv 7 shows the outer' face of the stationary burr.`

As 'shownfin this figure,- the central por. 'tionjof the stationary burr is additionally cutawayasindicated at 34e to provide for entrance of the'earsfof corn. Except forthis opening ,{the saine n reference` characters have Vbeen'.apalied to designate the diierentlpa-rtsf l as Wereeemployed in connection: with theretating. burr. jIt may be noted, however, that c VVfor the stationaryV burr,` the perforations 18 are used in' boltin-gzj-the-V burr tothe frame of the .machineein customary vmanne-r9 In the Y forml shown inFig-v. 7; the two Vmembers of the ,burr are :secured Vtogether by@ sweating sozthatthe screws 22 are not necessary.' {The operations andadvantages of myin-finto thefspace between the stationaryiand rof dished member having two setsV ofspaced ribs on they dished face thereof, said sets alternating with each `other and being differently inclined with relation to a radial direction-with one ofasaid sets extending between the outer and inner margins of said member and the other setstarting atthe out- "er margink and'sto'pping short-*of Vthe inner margin, teethbetween the successive ribs 0ccupying an annular; space toward the outer ends of the-"ribs", antilla'` separate annular member secured around central member with its corresponding face ing two sets vofspaced'ribson the fdished face thereof, said :sets alternating with each other and being differently inclined with]V relation Y provided with acon- Etinuous successionof.. teeth. f

tof afradi'aldirection, twoofthe adj acentribs on' one side: of said burr being spaced further apart thanfthe Lribs :arel for lthe remainder lof Ltherburr., teeth'lbetween therfsucces'sive ribs v occupying` a --space toward the o1-iter ends` thereof,- and a plurality: of. teeth'occupying a concentricouter spacebeyond said ribs.. i

In testimony .whereof LIfliereunto `alii): Vmy 1 signature,V

ventionwilllnow be obvious.; The ears of i 'corn after passing through the opening ,-34-

tatiltgburrs7 are broken up Aby the action of 'i the ribs which then act to feed the-material; i toward the periph-ery. Y The grinding action becomes progressively finer onjaccount of the dishlikeshape of theburr-s in combina-f t-ionwith the decreasingdepthof the teeth 28 and the still finer peripheral teeth`j12.,AV Y 'lhe-lattervteetla being, inclined forwardly'on- ,7 7

the rotating' burr serve to ,cut"the rnateriailiV Y to the .ii-nenessfdesired'for thefinealwhich is.

produced. :,jI claimt: 1

A'glldngburr forni'having' i 1 two "Sets SPaCedT'lbS Onthedished face thereof, 'said sets alternating with eachfotheiYV I Y l and being dierentlyinclined with relation? to afradialdirection with one of thesets eX'-A tendinglfurther toward thecenteroftheburrflv i i than {theother set,teeth between the succes`-` i siveribsoccupyingan-annular space'toward Y Y Y tlieouter'ends ofthe ribs, andaplurality of f .teethoccupying a concentric outer spaceifiY j l 2;"A :grinding'burr comprising"a central JosEPn A

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