US1168493A - Air-blast cotton-gin. - Google Patents

Description

C. B. GINN.

` AIR BLAST COTTON GIN.

APPLlcATToN FILED `Nov. 2l. 1914.

1,168,493. Y Patented Jan. 18, 1916.

2 SHEETS-SHEET l.

C. B. GINN.

AIR BLAST COTTON GIN.

APPLlcATxoN FILED Nov. 2|, 19u.

Patented Janfl, 1916.

2 SHEETS-SHEET 2- UNITED sTATEs PATENT OFFICE.

CARROLLVERNON B. GINN, 0F BRENHAM, TEXAS, yASSIGrNOR 0F ONE-HALF TO'PAUL D. GINN, 0F BRENHAM, TEXAS.

AIR-BLAST COTTON-GIN.

Specification of Letters Patent.

Patented Jan. 18, 1916.

Application led November 21, 1914. Serial No. 873,353.

T o all whom it may concern.'

Be it known that I, CARROLLVERNON B. GIEN, citizen of the United States, residing at Brenham, in the county7 of Vtashington and State of Texas, have invented certain new and useful Improvements in Air-Blast Cotton-Grins, of which the following is a specification.

Machines of the type for ginning cotton generally employ a brush for removing the lint from the teeth of the rotary gin elements or saws. It has been found objectionable to use rotary brushes as means for stripping or doiiing the lint from the gin mechanism because of the trouble expe rienced by such brushes getting out of balance and becoming dismembered because of the high speed at which they are required to be run and, furthermore, because of the heating of the bearings.

The present invention provides novel means for utilizing an air blast for dofling or stripping the lint from the teeth of the rotary gin elements, such air blast being further utilized as means for conveying the lint to the required point of discharge, or to other mechanism for forming the lint into a bat, or for other desired purposes.

The invention provides novel means for utilizing an air blast as doihng or lint stripping means in the manner herein before indicated, said means being applicable to cotton gins, linters, regins or bollers, and said means embodying devices for regulating and directing the air blast according to the condition of the material to be ginned or to the conditions requiring adjustment of the working parts.

A further purpose of the invention is the provision of means for concentrating and directing the air blast upon the teeth of the rotary gin member so as to e'ectively strip the lint therefrom and enable the work to be effectively performed with a minimum amount of air and a consequent small eX- penditure of power.

The invention also has for its object the provision of a mechanism of the character herein before stated embodying a lint flue in which is formed a discharge for motes, said discharge being adjustable and such lint 'flue having a portion of its wall adjustable to regulate the effective size of the air passage thereby adapting the mechanism to varying conditions.

The invention further aims to provide a cotton gin having a lint flue formed with a contracted portion opposite the gin saws, said iue being enlarged in the rear of the contracted portion to provide` ample clearance for the stripping of the lint from the gin saw teeth.

A further purpose of the invention is the provision of a lint flue through which a blast of air is caused to tra vel, said lint flue having a valve made adjustable for regulating the effective passage or throat through which the air is forced, thereby enabling the air blast to be controlled and utilized to the best possiblel advantage.

The invention has for its object furthermore to provide anair blastcotton gin embodying novel features which hereinafter will be more particularly set forth, subsequently claimed and illustratedA in the drawings hereto attached, in which Figure l is a vertical longitudinal section of an air blastcotton ginembodying the invention; Fig. 2 is a top plan view of a gang of gins having an air supply pipe in conimon; Fig. 3 is a detail view of a portion of the inner wall of the lint flue showing more clearly the deflectors for concentrating the air upon the sides of thegin saws; Fig. 4 is a detail perspective view of a portion of the gin showing more clearly the relative arvrangement of the parts; Fig. 5 is a detail perspective view of the means for adjusting the movable portion of the front wall of the lint flue; Fig. 6 is an enlarged sectional view of the parts illustrated in Fig.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawings by the same reference characters.

The main frame of the gin is indicated generally by the reference numeral l and may lbe of any construction according to the type or character of gin to which the invention is applied. Y

The numeral 2 designates the cotton cham-r ber which receives the material to be ginned. The picker roll 3 arrangedwithin the cotton chamber 2 is of ordinary construction. The grid or breast t at one side of the' cotton chamber serves to separate the seed from the lint. The gin saws 5 are mounted upon a mandrel 6 and are arrangedto op( rate through the bars comprising the grid or breast 4.

The parts herein referred to may be of any construction and arrangement well understood in the operation of cotton gins.

An air pipe 7'is mounted upon the frame 1 and extends parallel with the cotton chamber 2 and axis of the gin saws. The pipe 7in practice is supplied with air under pressure from any suitable source. A liue 8 leads from a side of the air pipe 7 and is of involute form, as shown most clearly in Fig. 1. The delivery end of the flue 8 is enlarged, as indicated at 9, to facilitate the separation of the air from the lint. The flue 8 receives both a blast of air :from the pipe 7 and the lint from the ginning mechanism. In the preferable arrangement the lint flue 8 connects withthe air pipe 7 at the side facing the ginning mechanism, the portion of the lint flue adjacent the ginning mechanism curving forward so as-to present a. convex portion facing the gin saws. The receiving end portion of the linl flue embodies a rear wall 10 and a front wall 11, the latter being adjustable to vary the space formed between the two walls. An opening 12 is formed in the front wall of the lint flue a short distance below the ginning mechanism for the escape of motes or specks. The opening 12 is made adjustable and is located about in line with the vertical portion of the lint flue so that the inotes or specks may bc discharged there- 1 through by the momentum'or impetus irnparted thereto by the combined actionr of the air blast and the rotation of the gin saws. 1

A plurality of slots or openings 13 are formed in the wall 11 of the lint flue to receive the toothed portions of the gin saws. An oli'set or bend 14 is formed in the wall 11 about in line with a horizontal plane passing through the axis of the gin saws thereby forming a contracted passage 15 in the lint flue. This contracted passage 15 concentrates the blast of air so as to insure thorough stripping or doliing of the lint from the gin saws. Below the offset portion 14 or constricted part 15 of the lint flue the latter is enlarged thereby affordingA ample clearance for the doiing of any lint that may tend to cling to the toothed edge of the saw and be carried thereby through the opening 13 and back into the cotton chamber 2. The lower end of the wall 11 bordering upon the opening 12 is movable forwardly and rearwardly thereby admitting of the receiving portion of the lint iue being enlarged or contracted adjacent the opening 12 and the toothed portion of the gin saws extending into the lint flue. While any means may be provided for effecting adjustment of the wall. 11 the means illustrated are preferred, the same consisting of one or more brackets 16 and an eccentric 17 secured to a shaft 18 arranged parallel with Vthe throat or discharge 24 of the air blast.

the mandrel 6 and supported in suitable bearings provided upon the frame 1. One

.end of the shaft is provided with a hand wheel 19 or other manually operable part to admit of rotation ofthe shaft to effect adjustment of the wall 11 when required. The eccentric 17 has positive engagement. with the bracket 16 to effect positive movement of the wall 11 in either direction. As indicated most clearly in Fi 4 the eccentric 17 75 is formed in opposite gaces near its outer edge with grooves which engage inwardly facing extensions at the outer end of the bracket 16.

Deflectors 20 are located upon the inner .o side of the Wvall 11 adjacentthe upper ends of the openings or slots 13 and are disposed in a horizontal line intermediate adjacent openings 13, as shown most clearly in Fig. 3. Opposite faces or sides of the deliectors 20 incline upwardly, preferablyv at like inclinations so that the angle formed between either face or side 21 and a vertical plane passlngv through the adjacent opening or slot 13 is equal, with the result that the blast of air is divided and directed downwardly and outwardly atvthe Asides of a deflector 20 with equal force. This action concentrates the force of the air blast upon the sides of the toothed edge portions of the gin saws projecting into the lint flue with the result that the lint is loosened and detached from the teeth of the saws. The crests of the deflectors 20 incline downwardly and rearwardly from the wall 11 thereby facilitating the doliing of the lint. It is noted that the de- Hectors 20 are disposed above the constricted portion 15 of-the lint Hue and opposite the upperends of the portions of the gin saws extending into the lint flue, thereby serving the better to loosen and eii'ect a stripping of the lint from the saws.

The valve 22 is located at the receiving end of the lint liuc and consists of a Hap or apron which is hinged at 23 to the pipe 7 or upper end of the rear wall of the lint flue. The lower end of the valve 22 is free and is; adapted to move forward or backward between the walls 10 and 11 so asto regulate The lower end of the valve 22 terminates adjacent the upper ends of the deflectors 20 thereby concentrating the air blast and directing the same into the angular spaces formed between the oppositely inclined faces or 'sides 21 of adjacent deflectors. Suitable means may be employed for effecting adjustment of the valve 22. As indicated, a shaft 25 is disposed within the upper p0rtion of the lint flue in the rear of the valve 22 and one or more eccentrics 26 are mounted thereon and engage with the valve 22. Rotation of the shaft 25 causes the-turning of the eccentrics 26 and a lcorresponding ad- 1,1'es,4es f and is mounted for longitudinal adjustment. A rack bar 29 attached to the moteb'oard 28 is adapted to coact with a piniony 30 and the latter is rotatable in any manner to" effect a shifting of the mote-board either f forward or rearward. A section 31 of the wall of the lint iiue is carried by the moteboard 28 and lits close against the fixed wall of the lint flue and if movable thereover so as to maintain a close fit and prevent the formation of any space for the escape of lint or air. rllhe forward end of the adjustable wall section 31 curves upwardly and forwardly and the upper end 38 may be adjusted to a position more or less in, vertical line with the upper portion of the lint Hue so as to effect a separation of the motes or specks which are forced toward the front wall 11 of the lint flue by centrifugal action due to the forward convexity or curvature of the lint iiue, as indicated most clearly in Fig. 1.

It is to be understood that the invention may be used in connection with a single cotton gin or a-plurality of cotton gins. Fig. 2 illustrates an arrangement of four cotton gins disposed in series, or gang, and in such arrangement the air pipe 7 is common to all of the gins and is adapted -to receive a blast of air from a. fan 34. When a plurality of cotton gins are arranged in series so as to receive a blast of air from a pipe 7 common thereto the advantage of the valve 22 and adjustable wall section 11 is apparent and such parts provide for regulating a blast of air so that each gin may receive a blast of air of like force, or the parts 11 and 22 may be so adjusted to admit of different gins receiving a blast vof air of varying force according to the natureor condition of the cotton or the material being ginned.

An advantage resulting from the construction disclosed is that damp or wet cotton or like material may be effectively ginned, the valve 22 and adjustable front wall section 11 providing for delivery of the blast of airin such a manner as to insure a doffing or stripping of the lint from th gin saws.

It is to be understood that the invention is of such a nature as to be readily adapted to cotton gins, linters, regins or bollers and operates with equal effectiveness in either adaptation. While it is preferred to embody the air pipe 7 and lint flue 8 as an essential part of the machine it is to be understood that such parts may be applied to cotton gins of any make and in use or upon the market.

While the lint flue 8 serves as an essential part of the doiiing or stripping mechanism it also serves the purpose of a conveyer to direct the lint to the requiredpoint of discharge, or to other machinery, for subsequent treatment of the lint as the same is discharged from the gin.

In the-operation of the invention the cotton or other material to be ginned is placed in the chamber 2 in the manner well understood and the lint removed from Vthe seeds is carried through the grid or breast 4 into the lint flue by the action of the gin saws 5 in the manner well understood. The instant the lint enters the lint flue it is subjected to a blast of air delivered through the throat 24, such blast of air being concentrated by the combined action of the valve 22 and oppositely inclinedfaces 21 ofl the deiiectors 20. 1t is to be understood that the blast of air must be of such force and of such high velocity as to detach the lint from the toothed portions of the saws 5 and direct the same through the flue 8. The forwardly curved portion of the receiving por tion of the lint fiue serves to effect a separation of the motes or specks from the lint by centrifugal action, such motes or specks escaping through the opening 12, whereas the lint being ,light is carried along through the flue by the blast of air. Whenl the nature of the material is such as to require variation in the size of the throat 24, the lower end of the valve 22 is adjusted by rotary movement of the shaft 25 in the manner stated. Adjustment of the lower end of the wall 11 varies the size of the constricted portion 15 of the flue and also effects adjustnient of the deflectors 2O with reference to the parts of the saws 5 extending into the lint flue.` Forward adjustment of the lower end of the wall 11 enlarges the constricted portion 15 of the lint flue and at the same time admits of a larger portion of the saws 5 projecting into the lint Hue. Rearward adjustment of the lower end of the wall 11 contracts the passage 15 and causes a smaller portion of the saws to project into the lint liue.

While the drawings illustrate the preferred embodiment of the invention it is to be understood that in the practical adaptation thereof to meet varying conditions changes in the form, proportion and minor details ot' construction may be resorted to within the scope of the invention as claimed without departing from the essential features thereof.

Having thus described the invention, what is claimed as new is 1. In an air blast cotton gin and in combination with the gin saws, a Hue having a section of its wall adjustable toward and from the opposite wall and having the gin saws extending therethrough, means for lio causing a blast of air to pass through the Hue, and means for adjustlng the movable section of the Hue. 'v f 2. In an air blast cotton gin having-openings in a wall thereof to receive the gin saws and having a discharge' opening below the saw receiving openings, the portion 'of the wallof the Hue above the discharge opening and containing the saw receivin openings being adjustable toward an away from the opposite wall of the Hue, means for adjusting the movable portion of the Hue wall, and means for causing a blast of air to pass through the Hue. 3. In an air blast cotton gin,.a Hue comprlsing approximately vertical and horizontal portions and` having a discharge opening in the outer wall at or near the juncture of the vertical and horizontal portions and having the section of the wall above the discharge opening formed with saw receiving openings and laterally adjustable at its lower end toward and away from the rear wall of the Hue and a second section of wall immediately below the discharge opening adjustable horizontally, means for adjustlng the upper section of the Hue wall above the discharge opening, and other means for adjusting the sec-v ond section of the Hue wall below the discharge opening.

4. In an air blast cotton gin, a Hue having a section of its wall adjustable toward and away from the opposite wall and formed with saw receiving openings and provided with an internal oset intermediate the ends of the saw receiving openings, and means for adjusting the movable wall section of the Hue.

.5. In an air blast cotton gin, a Hue having a wall formed with saw receiving openings and having an internal oH'set in the wall intermediate the ends of the saw receiving openings, and deHectors arranged upon the inner side of the wall above the oHset thereof about in line with the upper ends of the saw receiving openings and between the same, such deHectors having their opposite faces inversely inclined to concentrate and direct the blast of air against the sides of the saws.

6. In an air blast cotton gin, a Hue having a section of one of its walls made adjustable and formed with saw receiving openings and having an oHset or bendl intermediate the ends of such openings.

7. In anA air blast cotton gin, a Hue having a section of one of its walls made adjustable and formed with saw receiving openings and having an oH'set or bend intermediate the ends of such openings, and deHectors disposed upon the inner side of the ,adjustable wall section Vabove the oifset portion thereof and about in line with the upper ends of the sawA receiving openings and between the latter, with their faces oppositely inclined to concentrate the blast of air against the sides of the saws.\

8. In an air blast cotton gin, a Hue having a wall formed with saw receiving openings, a swinging valve,I disposed in the Hue above the saw receiving openings to form a throat or passage, and-means for adjusting the lower end of the valve toward or from the wall havin the saw receiving openings to regulate t e sizeof the throat or passage to control the blast of air.

.9. In an air blast cotton gin, a Hue provided ywith saw receiving openings in a wall thereof, a valve arranged inthe upper portion of the Hue abovethe saw receiving openings and having its upper end fixed an its lower end adjustable toward and away from the wall of the yHue havingthesaw receiving openings, and means for adjusting the lower end of the valve to regulate the size of the passage between such valve and the wall of the Hue formed with the saw receiving openings.

10. In an air blast cottonv gin, a Hue having a wall provided with saw receiving openings, al valve disposed within the Hue above the saw receiving openings and having its upper-end touching the rear wall of v the Hue and its lower end adjustable toward or away from the wall of the Hue having the saw receiving openings, and means arranged within the Hue between the valve and the rear wall to effect adjustment of the valve at its lower end to regulate the size of the passage between such valve and the wall of the Hue having the saw receiving openings.

11. In an air blast cotton gin, a Hue of involute form arranged with one, portion approximately vertical and the lower yportion horizontal, an air pipe having connection with the upper end of the Hue, saw yreceiving openings formed in the front wall of the vertical portion of theHue and a valve disposed in the upper portion of the Hue with its upper end in contact with the rear wall of the Hue and its lower end adjacent the front wall of the Hue and terminating about in line with the upper ends of the saw receiving openings, and means for adjusting the lower end of the valve loward or away from the front wall of the ue. v

12. In an air blast cotton gin, a Hue of involute form arranged with one portion l12) approximately vertical and the lower portion horizontal, an air. blast pipe having connection with the upper end of the Hue, saw receiving openings formed in the front wall of the vertical portion of the Hue, a valve disposed in the upper portion of th'e Hue with its upper endin contact with the rear -wall of the Hue and its lower end adjacent the front wall of the Hue andterminating about in line with the upper ends of the saw receiving openings, means for adjusting the lower end of the valve toward or away from the front wall of the Hue, and deectors disposed upon the inner side of the front wall of the flue immediately below the valve and between the upper ends of the saw receiving openings, the sides of suoli detlectors being oppositely inclined to concentrate and direct the blast of air against the sides of the saws.

13. In a cotton gin, the combination of a flue receivingan air blast at its upper end and haring an offset on its front wall at an intermediate point of its height, and gin saws extending through said front Wall and the offset thereon.

1l. In a cotton gin, the combination of a flue having its front Wall provided with saw-receiving openings and receiving an air blast at its upper end, gin saws extending through said openings, means at the upper end of the flue for delivering the blast to the saws in a thin stream, and means on the front wall of the ue at the sides of the saws to defiect the blast against the saws.

15. In a cotton gin, the combination of a Hue receiving an air blast at its upper end and having its front wall provided with smv-receiving openings, the flue being further provided with a lateral outlet and a mote discharge at the entrance to said out- V-let, gin saws projecting through said sawreceiving openings, and means below the saw-receiving openings to direct air and lint into the lateral outlet. and permit dirt and metes to pass through the mote discharge.

In testimony whereof I afx my signature in presence of two witnesses.

GARROLLVERNON GINN. [a s.; IVitnesses:

T. G. SHOW, OLLIE B. ZERNIAL.

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