US1254148A - Doffer-machine. - Google Patents

Description

l. MEURLING1 DOFFER MACHINE.

APPLlCATlON FILED MAY 22, 1915.

Patented Jan. 22,1918..

Mwfoz I. MEURLING.

DOFFER MACHINE.

APPLICATION FILED MAY 22, I915- 1,254,148. Patented Jan. 22,1918.

2 SHEETS-SHEET 2.

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IVAR MEURLING, 0F BROOKLYN, NEW YORK. ASSIGNOR T0 EMPIRE DUPLEX GIN COMPANY, OF NEW YORK, N. Y., A. CORPORATION OF ARIZONA.

DOFFER-MAGHINE.

Specification of Letters Patent.

Patented Jan. 22, 1918.

Application filed May 22, 1915. Serial No. 29,715.

To all whom it may concern:

Be it known that I, IvAn MEURLING, a subject of the Crown of Sweden, residing at Brooklyn, Kings county, and State of New York, have invented certain new and useful Improvementsin Dolier-Machines, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

My invention relates to apparatus for treating cotton and particularly to doifer machines or the like which are adapted to feed cotton from a bale opener into a lint flue or chamber containing air under pressure which leads it to a lapper.

One object of my invention is to provide an improved machine of the aforesaid character that shall be more simple and reliable than those hitherto known and subject to less injury and wear.

Dofler machines have usually comprised a roll or rolls having paddles or vanes of leather or other flexible material extending radially outward, which were intended to feed the cotton into the lint flue and at the same time to seal the opening of the fine. Machines of this kind are objectionable be- 1 cause they tend to wear rapidly and to work badly on account of the leather losing its flexibility and permitting the air in the flue to blow back the cotton. The usual apparatus for conveying the cotton to the dofler machine is so constructed, having spikes or nails for carrying the cotton, that there is danger of fire by striking a spark and igniting the cotton. A fire once started in the flue would travel with great rapidity and do a large amount of damage.

One object of my invention is to overcome this risk and in fact my dofler structure is so arranged that if the cotton in the hopper should be ignited the fire will be extinguished by the dolfer rolls before it is delivered to the flue.

Other objects and advantages of my invention will be set forth hereinafter, and in order that my invention may be thoroughly understood, 1 will now proceed to describe the same in the following specification and then point out the novel features thereof in appended claims.

Referring to the drawings: Figure 1 15 a front view of a dofi'er ma chine arranged and constructed in accordance with my invention.

A artially sectional front elevation of one end of the dolfer machine showing the rolls, is illustrated in Fig. 2.

Fig. 3 is a sectional end elevation, on the line 33 of Fig. 2.

As shown in Fig. 1, the machine comprises a body built up of side frames 10 and crossrods or stays 11, a conveyer platform 12 adapted to receive the cotton, a hopper 13 to which the cotton-is transferred by the conveyer, rolls 14, 15 and 16, and driving mechanism therefor.

The conveyer 12 may be of any suitable type, an endless belt rack 17 extending as shown in the drawings around a pair of pulleys or sheaves 18 and 19. The arrangement of parts is such that the top section of the conveyer constitutes a receiving platform onto which cotton may be thrown. pulley 19 is mounted on bearings carried by adjustable brackets 20 so that the conveyer may be maintained in any desired tension.

Adjacent to the opposite end of the conveyer the side frames 10 extend upwardly taken and are provided with a cover-plate 21 to constitute a receiving hopper, to which the cotton is delivered from the conveyer. Directly under the hopper near the bottom of the body of the machine is a chamber 22 which is adapted to form a part of a lint flue, sections 23 and 21 of the fine being shown as fitted onto flanges 25 and 26 with which the end frames of the machine are provided.

The flue, including the chamber 22, is closed except where it opens into the hopper, and into this opening, which is indicateld at 27, the doffer rolls 15 and 16 ex- 'l;11(

The roll 16 is secured to a shaft 28 which has a sprocket wheel 29 and a bevel gear 30, and is rotatively mounted in the frame. The shaft 31 which is substantially parallel with the shaft 28 is also rotatively mounted in the frame. It has a sprocket wheel 32 near one end and a gear wheel 33 near the opposite ent Suspended from the shaft 31 are a pair of brackets 34 which form bear- I ableklrivin-g means: for example, it maybe gether as shown in Fig. 2 of the drawings,

the shaft 36 is directly below the shaft 31 quently it tends to swing the brackets about e Shaft 31 as an axis and press the roll 15 against the 'roll' 16.

The shaft 36 is provided with a gear Wheel 38 which inesheswith the gear wheel 33, an operative connection being thus formed from the shaft 31 to thcroll 15. 'The arrange" ment of parts is obviously such as not to interfere with the swingingof the roll 15 since the pivotal axis for the suspension brackets 34 is the center Ofthe shaft 31. A pair of adjustable brackets'40 are pivotally mountedon'sleeve projections 41 with which the brackets 34.. are provided and support a shaft 42 to which the roll 14 is secured. The frames 10 are provided with slots 43 and the ends of the brackets '40 are clamped in any suitable position to which they are adjusted. bybolts '44which extend through the slot 43, the adjustment of the brackets being of course limited "by the length of the slot.

This constitutes a convenient means for i adj-ustingtheposition of the roll 14 whichis for the-purpose'bf pushing the cotton downwardly. as it leaves the'con-veyer 12,

onto the (letter rolls 1'5 and 16.

The roll 14 maybe rotatedfby anysuitconnected to thcshaft' 31 by a'gear '14 mesh ing with gear 33,01' connectedin some other way to a driven member;

45 represents the main 'driving'pulley of the ma'chine although the'machiue may be driven in any-suitable manner." The pulley is mounted 'onthe shaft 46' supported in suitable" bearings.'47 a 11(l'havi'ng'a bevel "pinion 48 one end whichme'shes with the bevel gear 30. The shaft 28 is thus driven'and driving connection is established from this sha'ftto the shaft 31,- andtoa shaft '49 -'on" which the pulley 18 is mounted; by means of" a sprocket chain 50 which meshes with th'e' sprocket wheels 29 and 3-2. and a sprocket wheel 51 mounted on'the shaft 49. An idler pulley 52. mounted on an adjustable bracket 53 is provided for'the purpose of adjusting the'tensionof the chains" I V The hopper 13 is pl'ovided"wi'tli" an*apron 54 which 'di vertsif'the :cotton onto the doftcri rolls. I?

Each of the (letter rolls isprovided with a shoe'55 which extends longitudinally of thetheedgesof'the opening27' into'zthe'chamber' v7strips56.which are bolted to the top of the .ichatnber, thereby sealingthe opening from the chamber into the hopper and preventing the loss of air pressure in the flue or the blowing out of the cotton wh'ich'iis intended to be delivered to the flue. The shoes 55 are pressed into engagement with the'respective dofter rolls by means of spring-pressed levers 57. As indicated in Figs. 2 and3. each of the dofi'er rolls is prefera'bly provided :with grooves in its outer surface in order to avoid the clogging of the machine as hereinafter explained? Theoperation of the apparatus is as -fol-" lowsz+Assuming that. the shaft 46 .is' oper ated o that the'shafts 28 and '31 .and.49 are;

driven :in a clockwise direction, asshown' in Fig. 2, the shaft 3'6 -wil1.obviously'be driven: I in a counter-clockwise direction so that the doifer rolls 15 and 16 cooperate without material wear or friction- \Vhen 'the'machine is thus operated, if cotton is thrown onto the the hopper 13, the roll 14 serving to push it downwardly between the rolls .15 and'16.

conveyer platform 12. it will be carriedinto These rolls will act asfed-rolls and will carry the cotton between 'them 'into the chamber 22, particularly on account of their grooved or otherwise roughened surfaces whichprevent slipping. As this chamber is a part ofthe lint flue, the cotton will be com I veyed away by the usual 1 current of airtherein.

As the "cotton is squeezed betweenthe rolls. due to theaction of'the weight 37. the roll 15 .will swing'outwardly to a greater or less extent'to permit' the cOttOn to passthrousrh,

but I have found-that no material space will be open and'no lossof pressure in the lint flu'e'ior'blowing backof the lintwill occur.

Since the cotton is squeezed between the lrolls'as'it is fed "into" theflue. fire or flame \Vhat Ii l i ism pair" ofcyllind ri'cal do fier rolls disposed in "thel'iopeu'ingandiadapted to rotate with their cotton into the flue. shoes engagingith n;--

start'ed in the hopper will not be transferred to ltheiflue'ibut will be smothered as the eet t ton'passes throughiithe -1OllS.1-i." 1 1 I Structural variations may be effected withoutz'depart-ing 'from' the spirit and' 'scope of zmvvzinvention, and I I. intend. that: only such limitations f'fbe' 'imposed'las are. indicated. in the appended claims; Y 1

1. A dofi er machine comprising a conveyer'adapted to be supplied with cotton. a

therein and opening into'thehopper. and 'a 5 giperipheries fi amiable proximity to feed ad]fl'centfpflons ofthe dofl' u aces, .1spr as i'exertlngi pressure upon the shoes, W H SIfS outer surface ad acent to yielding means for connecting the s'hoesto 'the adjacent edges ofthe. opening intoi"tl'1e 22.;- Thes'e shoes -are'-' n1ounted m fiyieldinga flueam .pivotalLrbracketsSupPQrting .one -Jef images and opening into the hopper, and a pair of cylindrical dofl'er rolls disposed in the opening and adapted to rotate with their peripheries in variable proximity to feed cotton into the flue, shoes engaging the nonadjacent portions of the dofl'er roll surfaces, springs exerting pressure upon the shoes,

yielding means for connecting the shoes to' the adjacent edges of the opening into the flue, a pivotal bracket supporting one of the doffer rolls, an operative driving connection for the rolls arranged to permit the free pivotal movement of said supporting bracket and its roll, a weight tending to hold the doifer rolls together; and a roller mounted in the hopper and adapted to push the cotton downwardly onto the doifer rolls as it is received from the conveyer.

3. A dofler machine comprising a conveyer adapted to be supplied with cotton, a hopper into which the conveyor discharges, said hopper being open at the top, a lint flue below the hopper, adapted to have air pressure therein, a pair of cylindrical dotfer rolls disposed between the hopper and the lint flue, the ends of said rollers forming Copies of this patent may be obtained for airtight closures between the hopper and the flue, yieldable means for forming airtight closures between outer surfaces of the rollers, the hopper and the flue, means for rotating said rollers in any of their positions in opposite directions to feed cotton into the flue, means for pressing said rollers against each other or against the cotton between them and a transversely movable sup port for one of said rollers.

4. A doffer machine comprising a conveyer adapted to be supplied with cotton, a hopper into which the conveyor discharges, said hopper being open at the top, a lint flue below the hopper adapted to have air pressure therein, a pair of cylindrical dofi'er rolls disposed between the hopper and the lint flue, the ends of said rollers forming air-tight closures between the hopper and the flue, yieldable means for forming airtight closures between outer surfaces of the rollers, the hopper and the flue, a pivoted transversely movable support for one of said rollers, means for pressing said rollers 'agalnst each other or against the cotton between them, and driving gearing for rotating said rollers in opposite directions to feed cotton into the flue, the gearing for one of said rollers vcomprising a gear having its axis in alinement with the pivot of said movable support.

In witness whereof, I have hereunto set my hand this 20th day of May, 1915.

IVAR MEURLING.

five cents each, by addressing the Commissioner of Patents,

Washington, D. C."

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