US1460220A - Pneumatic apparatus for cleaning, conveying, and recovering lint - Google Patents

Description

June 26,;1923.. 1,460,220

G. ALLEN PNEUMATIC APPARATUS FOR CLEANING; CONVEYING, AND RIB-COVERING 'LINT Original Filed Feb; '12 1921 Inventor: Gilleb and Allen,

Patented June 26, 1923.

GEORGE L. ALLEN, OF SAVANNAH, GEORGIA.

PNEUMATIC APPARATUS FOR CLEANING, CONVEYING, AND RECOVEBING LIN'I.

Application filed February 12, 1921, Serial No. 444,322. Renewed May 11, 1923.

To all whom it may concern:

Be it known that GEORGE L. ALLEN, a citizen of the United States, residing at Savannah in the county of Chatham and State of Georgia, has invented certain new and useful Improvements in Pneumatic Apparatus for Cleaning, Conveying, and Recovering Lint, of which the following is a specification.

My invention relates to pneumatic apparatus for conveying, cleaning and recovering cotton lint, and it consists in the novel features and arrangementof parts hereinafter described and claimed.

Under prevailing methods andprocesses for recovering lint several grades of lint are obtained. In light linting a very high grade of lint is secured, as the seeds are not forced hard against the saws and no parti- 20 cles of the skin of the seed are cut off an mixed with the lint.

Light linting, however, is not economical as it leaves a quantity of lint on the seed,

thus losing the lint and rendering the seed 2! cake (the residue that is left after the oil is pressed out) less valuable.

The ideal condition is close linting, whereby practicallyall of the lint is taken oil the seed, provided, however, small particles of 0 seeds, skins and the foreign matter are removed from the lint before the same is baled, and the lint is left clean. This cleaning is accomplished in the present apparatus as will be shortly described.

Also heretofore in recovering lint by pneumatic means, a relatively large amount of power is consumed as from each linting machine a tapered hood is used which is connected to a small branch pipe which in time enters the -main duct. The highest mechanical efliciencythat is obtained from an exhauster o1 the type necessary for use in an installation of this kind for recovering lint is about 60%, and from this it will be seen that considerable power is necessary to convey the lint as fifty to seventy cubic feet of air are necessary to convey a pound of lint in a conveying system.

Furthermore, where a hood for each linter is used and a branch pipe, the resistance of the pipe and ducts enters greatly into the ower consumed in the system. The average linter brush throws ofi' about 1000 cubic feet of air per minute, and if this air can be used in drawing the lint into the suction system with the least possible frictional resistance, a considerable amount of power for the exhauster may be saved.

An objectthereiore of the present invengate with relation to the plane of the bot tom wall of the lint duct. Furthermore, the lint ductand gate are made to extend the full transverse breadth of the linter and communicate with the horizontal section of the main pipe line.

The object or" forming the gates with adjustable ends in the lint duct is so that the flow of the air from the linter will be uniform and not greater at the near end of the linter than at the far end.

Furthermore by providing ducts in this manner the air can be so regulated that there will be an even flow of the air and lint through the gate duct and so that the.

air may be regulated as not to pull the heav: ier particles, such as motes, etc. with the lint to the pipe line.

A further object of the invention is to provide for felting the lint and for delivering the felted lint to the press in proper condition for baling, that is to say, the lint fibre will be devoid of lumps, knots, curls, dust, etc.

With these and numerous other objects in View the invention consists in certain new and novel arrangement and combination of parts as will be hereinafter more fully described and pointed out in' the claims.

In the accompanying drawings Figure l'is a transverse sectional view of a linter with the apparatus applied and showing the same in transverse section;

Fig. 2 is a rear elevational View of the linter in which a portion of the apparatus is indicated in dotted lines.

As illustrated in the accompanying drawing, the linter 1 is of the usual pattern and includes a dofling brush 2 mounted for rotation in the usual manner. The conveyor 3 is located below the linter 1 and is disposed transversely thereof as is usual in linters. A small change, however, is shownin the linter in that an apron i is provided and may be adjusted upon its hinge so that it may be disposed at a desired angle with relation to a horizontal line, and any form of suitable means may be provided for holding the apron in its desired adjusted position.

Another apron 5 is also adjustably mounted in the body of the linter at a point to one side and below the center of the dotting brush, and as shown is located at the opposite side oi the dofiing brush and that of the apron l. Furthermore the apron 5 is of greater area than the apron 4, but it likewise may be adjusted upon its hinge so that it may be disposed at any desired angle.

A duct 6 is horizontally disposed and locatedin the rear portion of the linter and extends the full transverse breadth of the body. This duct 6 is provided on its top wall with a hood 7 and the inner portion of the top wall of the duct is downwardly curved as at 8 and forms a scraper against which the bristles of the dotting brush strike as the brush revolves. A gate 9 is slidably 1nounted for vertical adjustment in the hood 7 and is provided with a beveled lower edge 10, this gate extending the full transverse breadth of the body of the linter. Screw bolts 11 pass from the top of this hood 7 and have threaded engagement with the gate 9 in the vicinity of the ends thereof. Two bolts are employed so that each end portion of the gate may be adjusted independently of the other. The beveled surface of the lower edge of the is disposed towards the dofling brush as best shown in Fig. 1 of the drawings.

The application of this gate having its ends adjustable with relation to the lower portion of the duct is very important, for it this gate were not adjustable at its ends it will of course be understood that when suction was formed to pull the air and lint through the duct, the tendency would be for the greatest suction to be at one end of the duct only, that is the near end, and it the suction were made strong enough to make an even draft through all parts of the duct, it would also draw the motes and other foreign matter therethrough. Byproviding a gate that is adjustable at both its ends, the inner end may be slightly lowered so that the draft throughout the transverse area will be even and the lint fully drawn from the linter and without being too strong to draw in the foreign material.

At its outer end the duct 6 communicates with the horizontally disposed pipe section 12 and is disposed in horizontal alignment with the medial longitudinal dimension thereof.

It will be understood that when a suction draft is created through the pipe section 12, the lint bearing seedswill be passing through the linter or linters, and the lint will be removed from the saws by the dotting brush 2 and cast towards the aprons l and 5, the denuded seeds will fall into the conveyor 3 and be disposed of in-the usual manner.

The lint will be carried by the draft or suction up along the apron 5, through the duct 6, along the lower edge of the gate 9 and enter the pipe section 12. More air will be drawn through the duct 6 than that which is thrown off by the dotting brush and therefore some air passes upwardly throughthe space between the lower edges of the'aprons l and 5. The space between the lower edges of the aprons is sufficient to permit the passage of a volume of air suiiicient to sustain the lint and prevent its falling but the current of air is not strong enough to prevent the falling of the motes as above mentioned.

From the foregoing it will be seen that I have constructed an apparatus which may be used with any form of linter and any number of them, it necessitating but a slight change in the linters in the form of aprons, heretofore mentioned, and the providing of a gate which mey be adjusted at either end so that the fiow of air from the linter may be made uniform, that is the gate may be so regulated that the suction through'one side will not be greater than at the other. i' urthermore the suction for the tar linter may be made the same as for the near linter. Many slight changes might be made in the apparatus without in any way departing from the spirit and scope of the invention. Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In apparatus of the characterdescribed a pipe line, a linter, a duct connecting the linter with the pipe line, a gate located in the duct and means for independentlyadjusting the end portions of the gate that the lower edge thereof may be-disposed at a desired angle to the plane of the lower wall of the duct. I 2. In apparatus of the character described a pipe line, a linter, a duct connecting the linter with the pipe line, a gate located in the duct and having a lower bevelled edge and means for independently adjustingthe end portions of the gate that the lower edge thereof may be disposed at a desired angle to the plane of the lower wall of the duct.

3. In apparatus of the character described a linter including a rotating do'fier, a pipe line, a duct connecting the linter with the pipe line, aprons pivotally mounted in the linter at points below and at opposite sides of the doiter, means for securing the aprons at adjusted positions, one of the aprons being pivotally connected with the duct, the last mentioned apron being of greater area than the apron located at the opposite side or" the dofier.

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4;. In apparatus of the character described a linter, a horizontally disposed pipe line section, a duct connecting the interior of the linter With the pipe line and extending 5 transversely across the linter, a gate located in the duct and means for Vertically adjusting the opposite end portions of thegate in dependently of each other.

5. In apparatus of the character described 10 a linter, a horizontally disposed pipe line section, a duct connecting the interior of the linter with the pipe line and extending transversely across the linter, agate located in the duct and having a bevelled lower edge and means for vertically adjusting the opposite end portions of the gate independently of each other.

In testimony whereof I afiix my signature.

GEORGE L. ALLEN.

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