US1164953A - Method and means for removing foreign material from tobacco-scrap. - Google Patents

Description

R. G. MEWBORNE. METHOD AND MEANS FOR REMOVING FOREIGN MATERIAL FROM TOBACCO SCRAR.

APPLICATION FILED FEB.I7,19I4. I

1,164,953 Patented Dec.21,1915.

eaves COLUMBIA PLANOGRAPH co., WASHINGTON, D. c.

nrrEn .sIA'rE s PATENT o en RoBER'r e. MEWBORNE, OF LOUISVILLE, KENTUCKY, .essrenon To THE KENTUCKY 'rozencoo PRODUCT'COMYPANY, A CORPORATION on NEW JERSEY.

METHOD ANDMEANS Eon REMOVING EOEEIGN'MATERIAL anon ronnoco-sonnr.

Specification of Letters Patent.

Application filed February 17, 1914. Serial No. 819,158.

To all whom it mayco'ncern Be it known that I, ROBERT GpMnw- BORNE, a citizen of the United States, residing at Louisville, county of Jefferson, and State of Kentucky, have invented certain new and useful Improvements in Methods and Means for Removing Foreign Material from Tobacco-Scrap, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to an improved method and apparatus for removing from tobacco scrap the foreign material, such as stem shreds, fiber, feathers, paper, etc, which: heretofore has been picked from'tobacco scrap by hand.

I have discovered that such foreign ma- 7 terial may be quite largely removed from tobacco scrap bypassing it down an inclined table, which is given a quick reciprocating movement longitudinallyzof the scrap feed, as by an eccentric, so as to form a vibrating shaking table, and providing the table with one or more obstruction bars projecting upward therefrom and extending across the table, several such bars prefer- .i ably being used. These obstruction bars break the tobacco up into sections and the shaking table imparts a rolling or rotary motion to the section oftobacco between each two bars, so that the shreds, fiber, etc.,

' cling together and gradually collect against v section.

- reached the desired size.

the upper side of the lowerobstruction bar as a roll'or rope of foreign materiaL'ove'r which the tobacco scrap passes into the next This roll or rope of foreign material is removed by hand when it has I have found in actual practice thatthere is hardly any tobacco caught in the roll or rope of foreign material, and that the foreign material is thus quite largely removed from the tobacco scrap.

I preferably treat the tobacco scrap, after leaving the shaking table, for further removal of whatever foreign material may remain in the tobacco scrap, by 'subjectingthe tobacco scrap to the action of aroll, orpreferably a plurality of rolls, provided with'a surface acting to pick up the foreign material from the tobacco scrap, this surface preferably being formed by a layer of the foreign material itself, which is excellently adapted for this purpose. The tobacco scrap is preferably fed past the rolls on a feeding belt or other table moving below the rollsinstead of running the rollso-ver the tobacco, and preferably suitable stirrers, such as suspended chains, or the like, with their free ends lying on the belt, will be used between each pair of rolls so as to stir up thetobacco scrap and bring a fresh surface to the top after the tobacco layer has been partially cleaned by the preceding roll,

Patented Dec. 21, 1915..

but this arrangement may be changed within the broader features of the invention.

In carrying out the invention, the tobacco scrap ispreferably fed from a hopper onto the upper end of the inclined shaking table by some feed which delivers a uniform layer onto the table, and the shaking table between the obstruction'bars is preferably perforated so as to form a screen by which the tobacco dirt and dust will be screened out of the tobacco-scrap as the latter passes over the table. The, shaking table delivers onto a feeding belt or other moving table, above which are mounted the rolls abovereferred' to, which are free to rotate with the moving-tobacco scrap, and are mounted to move away from the table or belt, as the rolls increase insize by picking up the for eign materialfrom the tobacco scrap.

For a full understanding of the invention,

a detailed description of the construction embodying the samein a preferred form will now be given in connection with the accompanying drawings, and the features formingv the invention then specifically pointed out in the claims.

'In the drawings-Figure 1 is a sectional side elevation of a simple form of apparatus embodying the invention; Fig. 2 is a plan view of. the same; Fig. 3 is a cross section on the line 38;ofFig. 1; Fig. 4c is an ensuspended by swinging hangers 10 on stand ards 1,1, and is given the desired'vibrating or sha-king'motion by eccentric 12 on shaft 13, connected tothe table by link 14; The table is shownas having three obstruction barscZ, although more or less may be used,

' and between the obstructionbars cl the table is preferably perforated to form a screen '6,

' below which is shown ap'anc15. for catching 'the'dust and dirt screened from the tobacco scrap. From the lower 'end of-the'table a, the tobacco scrap, largely cleaned by the action of the shaking'tab'le and obstruction bars, passes onto a moving table shown as a feedingbelt f mounted on rollers 16. Above fi the-beltrf are mounted a seriesiofrolls'g,

three being shown inv the ,fpresentcase, al-' though less or more may be used if desired,

these rolls being mounted in any suitable manner so as to be-free to rotate as-moved by contact with'the tobacco scrapon belt f and being free to move away from the belt as the layer of foreign material thereon in creases in'thickness. 'In'the construction shown, these rolls are simply slipped into vertically slotted supports 1' 7, in which "the :rolls are free to move vertically. Between each pair of; rolls 9 are-mounted stirrer's h, which in the form shown consist of metal chains arrangedin series acrossthe belt and suspended from a bar lS carried by supports 119. on'opposite sides ofthe belt, so that the ends of'the chains k'drag through the tobacco scrap as the latter is carried' forward v by the belt, thus stirring up the tobacco and bringing a fresh surface to the top for action of the next I'I'Oll thereon.

The rolls-g may be made in any'desired manner and provided with-any surface suit- '7 able to pick up foreignmaterial from the f I tobacco scrap; Withany such surface, the

operation of the-roll at once forms a layer of foreign materialupon the'roll, which is eiiicientfor the purpose desired." The roll, "therefore, preferably is formed with such la surface-and may wellcon'sist of-a light wooden rollprepared by coating it with glue and covering .it with a thin layer of the shreds and fiber which are to be picked up from the tobacco scrap this layer being "stuck on by the glue. The drawings show 55- 'sta'r-fwheel 7) onto the upper end of shaking table a, and then passes down the 'tableover a roll thus formed, 1 ubeingwthe center wooden roll, and2' the layer of shreds, fiber,

etc, glued on; the Ivoll."

' 1 The operationofthe'construction will-be ,understood from a brief descriptionzf-The tobacco scrap 0'0 isjfed from hopper why the successive obstruction barsdjthefine dirt and dust being. screened out, by screen 6 and collected-inthe pan-15, As the tobacco,

scrap passes over the successive obstruction bars (1, it-is divided into sections between the bars, to which the rolling or rotary motion is imparted by the vvibratingtable, with the result: that the shreds, fiber, and other foreign material cling together-i ,ually form a roll. or rope of foreign mate-1,

rial againstthe upper sideof each lower obi struction bar of a pair, and over which roll f or rope thetobaccoscrap passes downward.

This action of *the obstruction Ibarsand shaking table is illustrated ;i n, -Il ig.' 4, in

which a roll or ropeof foreign'material 3/ is shown"collectedagainst theupperf side of an obstruction bar with the tobaccoscrap 00 passing over it} This rail *or ropeis ali lowed to form to the size foundbestin practice, and is'then removed by hand; The .to-

bacco'scrap m, with the ,foreign'material' referred to largelygremoved from it,-cis fed from the lower end jofshaking table a onto belt fin zi -substantiallyuniform layer, andis'then carried for'ward by the belt beneath the successive rolls "9,? which further clean the tobacco 1 scrap by "picking up fully :or

largely the foreign material such as above i described that :may remain""in* the tobacco scrap as deliveredto the belt: After the tobacco scrap w 'passesthe' first roll g,'it is astirred by the chains 71/ soas'to bring a new surface to the top for the action ofthe sec 0nd roll 7 and so on with thesuccessive rolls practice, itlis found thatthe rollsmayrun up to the-diameter; of '12 inches-goramore,

1 and chains, the cleaned"tobacco b-eing finally delivered fromfthe end of the belt-fix" In when the roll is'removed fromthe table and the foreign; materialstrip'ped 'Ofi" down to the original.materialfhel'd on by' the glue,-,

and the roll isithen again ready for use-and I is'ret-urned to its bearings over the beltfln Figs.*-5.and 6, one, of-the rolls gis shown operating on" the tobacco scrap eup nbelt f, with a layer of foreign materiaLz of com .siderable thickness picked up by. the roll.

It is'found in practicethatthe'foreign,

material collectedbyqth'eobstruction-bars d and rolls 9- contains practically no tobacco, and that the tobacco scrap 'deliveredby the v. belt} f isalmost entirelyv cleanedffrom .eign material'suchas described.

for-

isxnot to be limited to thespecific construction or arrangement of parts illustrated, but

that widely different constructions may be It will be understood that the invention used within the invention as defined by the claims. I 2 I a What is claimed 1s 1 I '1. The method of removing foreign matescrap, which consists in passing the tobac co scrap over. a" surface prov ded' with one or;

rial, such as shreds,.fiber,-etc., froln'tobacco more obstruction bars"extendingupward rial, such a's'shreds. 'fibeu'ete, from tobacco 130 i scrap, which consists in passing the tobacco more obstruction bars extending upward from the surface, giving the surface a reciprocating ,motion during 'the forward movement of. the tobacco scrap to collect the foreign material against the obstruction bars, and then rotating over the surface of a layer of scrap one or more rotatlng rolls having a surface adapted to pick up such foreign material from the tobacco scrap.

I 3. The method of removing foreign material, such as shreds, fiber, etc., from tobacco scrap, which consists in passing the tobacco scrap over a surface provided with one or.

more obstruction bars extending upward from the surface, giving the surface a reciprocating motion during the forward movement of the tobacco scrap to collect the foreign material against the obstruction bars, and then moving the tobacco scrap in a uniform layer past and in contact with a plurality of rolls having a surface adapted to pick up such foreign material from the tobacco scrap, and stirring the tobacco scrap between the successive,

rolls to bring a new surface into position for the roll action.

4. In an apparatus for removing the foreign material, such as shreds, fiber, etc., from tobacco scrap, the combination with an inclined table having one or more 0bstruct-ion bars extending upward from the bottom of the table, of means for giving the table a reciprocatingmotion in the direction of movement of the tobacco scrap,

i v whereby the foreign material is collected against the upper side of the obstruction bar or bars.

5. In an apparatus for removing the foreign material, such as shreds, fiber, etc.,

from tobacco scrap, the combination with an inclined table having a screened bottom and a plurality of obstruction bars extending upward from the bottom to divide the tobacco scrap into sections above the screen, of means for giving the table a reciprocating motion in the direction of movement of the tobacco scrap, whereby the foreign ma terial is collected against the upper side of the obstruction bar or bars.

6. In an apparatus for removing the foreign material, such as shreds, fiber, etc.,

from tobacco scrap, the combination with.

an inclined table having one or more obstruction bars extending upward from the bottom of the table, of means for giving the table a reciprocating motion in the direction of movement of the tobacco scrap, whereby the foreign material is collected against the upper side of the obstruction bar orbars, a support to which the tobacco scrap passes from the table, one or more rolls having a surface adapted to pick up such foreign material, and means for rotating the rolls over the surface of the tobacco scrap on the support.

7. In an apparatus for removing the foreign material, such as shreds, fiber, etc., from tobacco scrap, the combination with an inclined table having one or more obstruction bars extending upward from the bottom of the table, of means for giving the table a reciprocating motion in the direction of movement of the tobacco scrap, whereby the foreign material is collected against the upper to pick up such foreign material and beingv free to move away from the table as the layer of foreign material increases in thickness. 1

8. In an apparatus for removing the foreign material, such as shreds, fiber, etc., from tobacco scrap, the combination with an inclined table having one or more obstruction bars extending upward from the bottom of the table, of means for giving the table a reciprocating motion in the direction of movement of the tobacco scrap, whereby the foreign material is collected against the upper side of the obstruction bar or bars, a traveling table or belt'to which the tobacco scrap passes from the inclined table, a plurality of rolls mounted to rotate in contact with the tobacco scrap carried by the table or belt, said rolls having surfaces adapted to pick up such foreign material and being free to move away from the table as the layer of foreign material increases in thickness, and stirrers between the rolls for bringing a fresh surface into'position for the roll action.

9. In an apparatus for removing the foreign material, such as shreds, fiber, etc., from tobacco scrap, the combination with an inclined table having a screened bottom and a plurality of obstruction bars extending upward from the bottom to divide the tobacco scrap into sections above the screen, of means for giving the table a reciprocating motion in the direction of movement of the tobacco scrap, whereby the foreign material is collected'against the upper side of the obstruction bar or bars, a traveling table or belt to which the tobacco scrap passes from the inclined table, and a plurality of rolls mounted to rotate in contact with the tobacco scrap carried by the table or belt, said rolls having surfaces adapted to pick up such foreign material and being free to move away from the table as the layer of foreign material increases in thickness.

10. In an apparatus for removing the foreign material, such as shreds, fiber, etc., from tobacco scrap, the combination with an inclined table having a screened bottom andfa plurality of obstruction bars extending upward from the bottom to divide the tobacco tion in the direction of movement of the tobacco scrap, whereby the foreign material is collected against the upper side of the obstruction bar or bars, a traveling tableor belt to which the tobacco scrap passes from the inclined table, a plurality of rolls mounted to rotate in contact with the tobacco scrap carried by'the table or belt, said rolls .hav

' Copies 'of this patent may be obtained for eignk materialand being free to move away from the table as the layer of foreign Ina-e terial increases in thickness, and stirrers be-o a tween the rolls-for brlnglnga freshsurface v into position for the roll action.

In testimony whereof, I have hereunto scribing witnesses. v r

ROBERT G; MEWBORNE. l/Vitnesses; ROBT. B. ARNOLD,

C. C. SMITH.

2 0 set my hand, in the presence oftw'o sub-1 v ents each, by addressing the (l oiiimi s sionelrot Yatents, I Washington, 10.0.? i V 1

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