US1109725A - Mixer. - Google Patents

Description

' G. B. WHITNEY.

MIXER. APPLIUATIO FILED N0\.27,1908.

1,109,725. Patentedv sept. 8, 1914.

9 5 Figs;

@MIE l IML Nomefs PMMA un Mmm llrlm wAzmlrmm/v r l To Yalli/tahoe?, .may concern Be it known that Il, GEORGE v UNITED. OFFICE GEORGE E` WHITNEY, OEYONKEES, ZNEW YORK, AssIGNoEjro 'EEE INTERNATIONAL PAVEMENT OOMPANLOF HAE'IFOED, fcONNEOTIOUT,v a-OOEEOImrIoN OE QONNEO.`

i i Application filed November,

E. WHITNEY,

i' a citizen of the United,States,residing at Yonkers, in the county of Westchester, State of New? York, `have `invented anlmprove.-

ment in Mixers, of which the following' de-` scrlption, 1n connection with the 'accompanyi ing drawings, 1s a specification, likeletters on thedrawings representing like parts.- .c

tributing and mixing finely.y divided' material. While it may be of general' applica! i.' united by tion, 'it isprimarilyfintended for use in the' manufacture of compressed asphalt paving blocks and tiles Ordinarily composed Jof ai.`

body material of crushed `orpulverized stone asphaltic or equivalent cement orbinder. c Inorder that the principlesof my invenltionmay be readily understood,l havedisclosed asingle type or embodiment'thereof o im the 'accompanying drawings, 'wherein-v f 'Figure l is a plan view vofanapparatus embodying myinvention; Fig. 2 a vertical. section uponthe line 2`-2.of`-Fig. l; Fig. 3

is a detail illustrating one means of supportl! Ting the mixer frames and Fig. 4 represents amodied form of my invention'. Y f

` @The body `material and especiallytphejfinely divided material customarily'j"em` ployed in the manufacture of asphaltum' 1 blocks and tiles varies to a considerable eX? tent in iineness,`but` this is not objectionable, in fact is desirable provided the distribution of the coarse andy fine material is uniform.'V at all times. This,y materialis usually dis# lcharged into binsv or"i'eceptacles from which itis 'drawn for use. vlThe material as discharged, for instance intofthefbins, heaps up into conical l form beneath `the inletjfth'e" ner` material forming the ,centerl of the"'conical"` 'massa-nd the coarser material runniiig down` xthe'sides in all'directinsf-and to theksides of the bins or piles. This results'l in a pracrtical separation of the finer and coarserm'a-vl terial, so that thematerial drawn? from these vbins or piles varies greatly, running either fine yor coarse according to the "part of the bin or pile that for the moment supplies the material. The inevitable result of this condition is that the asphaltumblocks and tiles made from this body material arecomposed, some of coarse and some of iine ma-y terial, and hence do not wear similarly and are not ofthe same strengthas blocks where# TIOUT. i. v

V"1',r10,9','7:25,. x y l t' i l Specification of Letters raient,j'k

c inthe material grades kof fine' ness is evenly distributed throughout.'` L y'The 'object of my invention is'to prevent the separation of coarse and and the handling thereof@ i f i Referring `to *the-drawings, the i chute through which the materialis delivered. into the bins is 'representedat l andfis preferablyy elongated, `thebinfor receptacle being indii .y This. invention relates to'means for dis-y f cated atQ. Beneath the mouth `of the'chute Lfine 'material y' Y i l, Ixplace a distributing*membernory shelf 3, ,y

preferably iatin crosssection. It may,

however, kbe triangular in certain cases, and

is soshownin this instance. v `The apex or ridge Lof the shelf is preferablyalined cen-- trally of the :chute 1,so that the'lmaterial discharged from the chute is `deflected in "oppo' site deviations down theinclinedffaces 5, (i

Lof the shelf, or of therpile, if, a fiat shelf is f used. It is 'apparent that if theshelfA 3 be substantially flat the material isfpermitted to accumulate thereon in' heaps, down the i sides of which the coarser material slipsin fthe manneralready-described; f

Beneath the shelf E I preferablyprovide' one orrmore other 'distributing kshelves' of l lsuitable character,` and preferably fiat if the lshelf be fiat, or triangular ifthat be tri-j angular. In the present embodimentof mv invention' I' have representedthree other shelves mountedv in frames, numbered respectively 7,18 andg9.,` The shelves'of the j various series are 'herein arrangedin eche-ek lon.`` `Theshel'ves 10 ofthe `frame 7 receive the material from'the shelf 3 and inturn divide and deflect it in opposite directions in a series o f streams upon the shelvesl of the" frame 8,from which it is delivered inv an'increased number of divided stre'amsito the shelves 14: of'thel frame 9,' which delivers it in a Istill greater numbery lof dividedv i streams to and thoroughly distributes it over the larea'of the bin. 2. By thus interrupting the'flow of the material, there ,isvno oppor-v tunity forthe'coarser `and finer particles to become segregated, and byl so placing the ,Shelves asfoto divide the columns of material dischargedjupon` them and deviating the divided columns in 'different' -Ydirections, u

herein `-`upon staggered shelves beneath, ,aA

uniform distribution of unseparated ,and

uniformy material isl obtained over." a very 4 large bin or other area'.l 1

nDependent upon the height of the coll umn of" thel'material delivered through the atthe same time, moved inl an opposite directioii to the opposite extreme positions.; y

chute l, the material iiows with more or less force down the` sides 5 and G of the frame 3. If it flows with less than the nor# mal force from the chute l, it will falll within the apices of the shelves or bars 10 and hence would be distributed only by the inner faces thereof, unless means are pro-I vided to prevent this. If, however, the material should flow with mor'e than the nor-y mal force, it would be discharged upon thev apices of the said bars 10, and hence would be distributed only `by "the outer slopingi faces thereof. The: result` in either case would be the unequal distribution .of they material by the shelves or bars of .the sev-f eral frames. To prevent Ythis unequaldistribut-ion, due to unequal velocity of flow of the material, I impart a relative move-i Inentto the chute 1 and the shelves on the: frames 7, S and 9. Preferably, I move thew framesto and fro beneath the shelf 3 lso as to vary constantly the positions ofthe shelves g moved farther out to catch material thati n n bodiinent of my invention, I desireit to bev mayf-be flowing above the normal velocity.l

In other cases if the machine overshoots or a undershootsthe shelflO ateit-her side of the shelf 3, it will be caught 'upon the.;

shelves next beneath, which preferably are,

Thus by maintaining` the several series of shelves constantly antL 'oppositely in reciprocation, their positions are constantly changed f relative to each other, presenting at one 2 instant positions to receive material flowing at high velocity, andwatthe next instant ina-` tei-iai flowing at lower velocities, the mate-j rial that overshootsor undershoots one shelf y being invariably caught and held by a shelf beneath. The resultof this isin effect to present a plurality of-series of shelves which, `at all times, are capable of acting upon and properly controlling the flowing material, whether the latter flow' at a constant velocityor at variable velocities. Any

suitable means may be employed for shift@ vertical shaft 25 mounted in suitableA bearings and driven from any suitable source. The operating mechanism for the links 21 is preferably inclosed by a suitable casing 26 having holes for the passage ofthe rods and preferably flexible packing diaphragins 27 preventing the contact of the pulverized and powdered material with the worms andl worm wheels or other operating mechanism.`

`Preferably the crank pin 22 for the frame 8 is oppositely positioned with respect to the crank pins 7 and' 9, so that the frames are ing the material from a ring-like ltop shelf y"above and discharging it upon annular :frames beneath, `from which it .may be discharged, if desired, toy other suitable-frames. 4,Preferably these frames are also relatively shifted ory gyratedl with respectl to each other. resented the frame 28as gyiated by crank mechanism 29. `This may be accomplished in any suitable-manner as, for example, by

connecting the crank mechanismby links 30 Herein for the purpose lI haverepJ- sliding and oscillating in suitably mounted sleeves.

.Having thus described one type or eni-4 understood that although specific terms 'are "eniployed they are usedin a generic and descriptive. sense' and not for purposes of limitation', the scope of the invention being 'set lforth `in the yfollowing claims.

Claims: i

'downwardly increasing series of deflectors ,andmeansfor'movmg said series relatively to veach. other.

J2. A mixer for granular and ,pulveruljent materialcomprising in combination, a-plu-- iality of interrupting shelves-,arranged in echelon land meansto impart an oppositely substantially horizontal reciprocal movement to the adjacent parallels of said 'echelon.

3. A mixer. comprising-,in combination a downwardly. increasing series of deflectors l f ioo 1. A mixer. comprising in combination ,ay

, Gop-iesof this patentmay bey obtained -foil rive cents each, by` addressingthe l Commissonerof Patents, v

Washington, D. C.

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