US2217851A - Wool duster - Google Patents

Description

0a. 15, 1940. w. w. WINDLE v 2,217,851

. WOOL DUSTER Filed June 3. 1938 2 Sheets-Sheet 1 Warfrei 7147162781:

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CiGJwM Oct. 15, 1940. w w. WINDLE WOOL DUSTER Filed June 5, 1958' 2 Sheets-Sheet 2 I77 erp'r 7127 9197 TWIIZJ Patented Oct. 15, 1940 WOOL nus'rna wean w. wi al rnubilry, Mass; I Applicati'on magma,-seiamazuta "10 Claims. (c1. 19590) -This invention'relates to a'machine for separating dust and extraneous matters from wool, cotton and other fibres, whether in loose or man-- ufactured form. It may be applied for the dustpair of shafts I4 carrying rolls ing of dirt and carbonized cotton from woolen rags or for dusting out foreign material from cotton. It is intended toremove burrs, vegetable fibre and some grease as well as to break up clods in wool or carbonized materials-carbonized vegetable matter, etc. I

The principal objects of the invention are :to' provide a duster with means, operating after the beating cylinder has removed the dust and the like from the fibre, for causing the fibre, with any undetached particles, to come in contact with blades so located as to further remove the undetached particles; to provide these 'blad'es' in a form and location in which the-descending current of useful fibre and other materials will engage them and separate the coarse heavy materials from the light ones and deposit them in different positions on the screen; to provide means whereby descending fibre and loosened particles will be progressed along the rotating screen with relation to the relative cleanliness of the fibre coming in contact with the blades; and to provide an improved means for introducing the unseparated material to the beater cylinder: Other objects and advantages of the invention will appear hereinafter.

. Reference is to be had to the accompanying drawings, in which 1 Fig. 1 is a transverse sectional view'of a pre ferred embodiment of this invention, and- Fig. 2 is a side viewwith parts broken away to show interior construction.

The machine is shown as set. up in a hopper H), which may or may nothave a cover over the top. The principal feature for separating the fibre mm the loose material is a rotary wire screen cylinder, constituting a cage for the ma-' terial and a wire screen for allowing the particles separated from the fibre to pass down throughit into the hopper. This hopper is provided witha' cylindrical bands of metal on the outside of the cylinder to support it and also to rotate it. The fibre is fed into the cylinder through any kind of a feed, as for example, an endless belt l6 at' the bottom thereof and preferably near the center of the bottom surface of the cylinder. 'I'hecylinder' is rotated by the rolls l5 in the direction of the arrow and carries the raw material up one'side to a point where it will drop therefrom onafed apron I! which, in this case, is carried'zby three bottom and as fiaringout I 5 which engage.

rolls upper strand of this feed apron is shown substantially horizontal and it extends over one of the rolls l8 and under a pressure roll i9- against: thearms 20 which-is rotated at a comparatively highrate.

' The arms :ZBJ throw the raw material upwardly against astati'onary iron cover 22 Whichis made with surfaces'at varying. angles: so that the ma-.

terial will engagethesesurfaces with'some force, which constitutes the first/separating action and on the'beater cylinder 2| detaches much of .the foreign material'from the j fibre. 'As will be'seen'," the-several arms or vanes 2Il willv engage the'fib-re. more than once durin'g a single rotation. of the beater ,cylinder andforce' the materials against this'iron cover in various directions. The iron cover. and pressureroll-l 9are' protected at the topby two partitions 23 which are in stationary'position. One of thesepartitions or walls 23 on the left constitutes-an inclined surface to bring down backon the apron I! by gray-,1

' ity; any materials that. fall .upon it;

A cylinder with radialarms 25 at the toptof the cylinder rot-ates in the direction of the arrow and keeps this screen cylinder from carrying the fibre all, the wayaroundpand forces the fibres of the raw material ,back against the inclined. surface 23 or on the apron l7 sothat practically all, of the material introduced into the, screen: cylinder has togo through the er cylinder. The beater cylinder is located above a metal draft. cutolf 26, toprotect the material from dropping from it directly on the screen. Anymaterial that drops on this cutoff will bebrou'ght back again by ,thearms 20 on thebeater 2| so asto go through the necessary process. .At the right of the beater.cylinder and' of the iron cover 22 is a stationary iron platev 28. There is located at the end back and forth. It is also pivotallyi connectedwitha series of blades 38, each one of which is shown as curved atthe .on' a curve through a comparatively wide surface. By moving thisbar 29 horizontally the blades 30,which a rearranged in parallel condition, can be adjusted on pivots 3| carried by the iron plate to bring them to the desired position to treat the used. This constitutes the kind of material far side through which the fibre 'and-impurties pass. These blades are adjusted in stationary position to receive the' in a position sepa-f actionof the beat.-;

of it,-over the iron plate, a: I bar 29 which is adjustable The other side of the course through which these particles pass is bounded by the edges of the cutoff 26 and by a stationary iron plate 32. The iron plates 28 and 32 extend the length of the main cylinder. Pivoted at points 33 on the plate 32 are blades 34, preferably, equal to the number of blades and alternate with them. These blades 34 are adjustable about the pivots 33 by a longitudinal bar 35 which is pivoted to all of the blades 34 nearthe bottom by a series of pivots 36. These pivots are carried by a series of concave guides 31. The blades also are adjusted to the desired angle and fastened there. They;

receive the lightest particles and deposit them in a third spot on the screen. Thus, instead of the light and heavy particles being deposited in one spot on the rotary screen, they are deposited in three as shown in Fig. 1. The coarsematerial is dropped at the first point on the right, .coming down between the blades 30. The second pile of fibresindicated' is acted on by the blades 30 and moved. forward. The finest material is engaged byv the blades Slanddropped. Of course, this figure represents thematerial at one instant as if the screen had stopped, so it is a little distorted. Thus the finer clean, material will be advanced forwardly more rapidly thru the machine than the heavier, dirty, particles, and the latter are therefore acted upon by. the beater more times, resultingin uniformity of the material as it passes from the dusting machine.

. By the time the fibreand impurities reach the bottomjof the screen cylinder they are thoroughlyseparated but the fibres, of course, cannot pass through thescreen. The impurities are general- 1y small enough so that they will pass through and the impurities fall into the bottom of the hopper I0. At that point'they are taken by a suction fan 38'and discharged from the machine,

as through a pipe 39, to some point from whichthey are removed. Any impurities that do not passthrough the screen are, of course, brought up inrthe same way as the original material to a point over the belt I1 and pass through the machine enough times to disintegrate them into smaller'particles to be discharged.

fBy this means the material is brought in at a convenient point, treated one or more times to the action of the beater cylinder and the blades. The fibre is discharged at the other end while the waste is discharged, as described. Having thus described my invention and the advantages thereof, I do not wish to be limited to thedetails herein disclosed, otherwise than as set forthin the claims, but what I claim is:

1. In a fibre dusting machine, the combination with a screen cylinder, of means for rotating said cylinder constantly; means for introducing the raw material'into the cylinder at one end near the bottom thereof, where it will be taken upwardly by the rotation of the cylinder, an endless apron in the cylinder on which the material is deposited by the cylinder, a pressure roll in the cylinder for compacting the material slightly on the apron, a heater cylinder located at a point in the screen cylinder from which it receives the material from said apron, and a cover Over the beater cylinder inside the screen cylinder having surfacesat varying angles for receiving the impact of the material as it is thrown up bythe beater cylinder.

2. In a fibre dusting machine, the combination with a screen cylinder, of means for rotating said cylinder constantly, 'rr eans for introducing the raw material into thecylinderat one end near the bottom thereof, where it will be taken upwardly by the rotation of the cylinder which is comparatively slow, means in the cylinder on which the material is deposited from the upwardly traveling side of the cylinder, a beater cylinder located at a point in the cylinder from which it receives the material from said means, a cover in the screen cylinder over the beater cylinder for receiving the impact of the material as it is thrown up by the beater cylinder, and a series of blades so located below the beater cylinder as to receive the material discharged therefrom and discharging it at different circumferential points on the bottom of the screen cylinder.

3. In a fibre dusting machine, the combination with a rotatable screen cylinder, an apron therein on which the material is deposited by the cylinder, a beater cylinder located at a point in said cylinder from which it receives the material from said apron, a cover in the cylinder directly over the beater cylinder for receiving the impact of the material as it is thrown up by the beater cylinder, and two series of blades located in the screen 7 cylinder below the beater cylinder and providing, between them, a passage for the material discharged from the beater cylinder.

4. The combination with a rotatablecylinder screen for receivingfibre, of a beater cylinder therein in position for receiving the fibre therefrom and separating foreign materials therefrom, a, pair of series of pivoted blades located in the screen cylinder under the beater cylinder in position to receive between the two series the discharge from the beater cylinder, and means for adjusting each set of blades separately on axes transverse to the axis of the beater cylinder.

5. The combination with a rotatable cylinder screen for receiving fibre, of a beater cylinder therein in position 'for receiving the fibre and separating foreign materials therefrom, a series of pivoted blades, one series located under the beater cylinder-and the other at its side in the screen in position to receive the discharge from the beater cylinder, and means for adjusting all of said blades to any desired point.

.6. In a fibre dusting machine, the combination with a rotary cylinder, an endless feed belt therein, and a beater cylinder in the cylinder in position to take the material from the belt and disperse it by centrifugal action, of aseries of stationary blades arranged at an angle to the direction of travel of the material in the'cylinder and spaced apart, to provide spaces through which the heavier material may drop vertically downward to a point on the bottom of the screen, the slanting blades serving to deflect the lighter material forward and deposit them on the bottom of the screen at a different point.

7. In a fibre dusting machine, the combination with a rotary screen, of two series of parallel spaced stationary upright blades therein, one series being located forward of the other and means for delivering fibrous material against them at thetop thereof, whereby the heavier particles .of said material may drop vertically between them on the lower surface of the screen, said blades having a slanting direction transverse of the screen to engage the lighter material and move it, in dropping, forward with respect to the screen. i

8. In a fibre dusting machine, the combination with a rotary screen cylinder and a beater cyl-- inder therein in position to take the material and disperse it by centrifugal action, of a series of stationary blades in the cylinder arranged at an angle to the direction of travel of the material and spaced apart, to provide spaces through which the heavier material may drop vertically downward on the bottom .of the screen, the slanting blades serving to deflect the lighter particles forward and. deposit them on the bottom of the screen at a diiferent point, and a second set of stationary spaced angularly located blades for engaging the still lighter material and depositing it in a third spot.

9. In a fibre dusting machine, the combination With a rotary screen, of a series of parallel spaced stationary upright blades therein, and means for delivering fibrous material against them at the top thereof, whereby the heavier particles of said material may drop vertically be tween them on the lower surface of the screen, said blades having a slanting direction to engage the lighter material and move it, in dropping,

forward with respect to the screen, and a second set of stationary spaced angularly located blades for engaging the still lighter material and depositing it in a third spot.

10. In a fibre dusting machine, the combination of a rotary cylinder, means to feed fibre particles into the cylinder, and a rotary beater therein to centrifugally separate relatively light and heavy particles, with means feeding the light particles thru the cylinder, While retaining the heavier particles in substantially initial position longitudinally of the cylinder, said means feeding the light particles comprising a series of blades curved forwardly in the direction of feed, each of said blades being adjustably supported at one end and widely flaring from said one end towards its free end.

WINFRED W. WINDLE.

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