US2562424A

US2562424A - Cotton gin rib

Info

Publication number: US2562424A
Application number: US710289A
Authority: US
Inventors: Pressley E Hopper
Original assignee: ANNA LAURA HOPPER
Current assignee: ANNA LAURA HOPPER
Priority date: 1946-11-16
Filing date: 1946-11-16
Publication date: 1951-07-31
Anticipated expiration: 1968-07-31

Description

P. E. HOPPER COTTON GIN RIB July 31, 1951 Filed Nov. 16, 1946 I E. HOPPE R INVENTOR.

PRESSLEY A'r'roRNYs i atented July 31, 195i UNITED STATES PATENT OFFICE Pressley E. Hopper,- Dallas, Ie'x'., assigiio'rof twr'ltyfsii 1561" cfit t0 Ariiifi Laura Hopper,

Dallas, TeX.

Application November 16, 1946, Serial No. 710,289

I 80mins.

This invention relates to new and useful improvements in cotton gin ribs.

One object of the invention is to provide an improvement of the ginning rib construction shown in United States Letters Patent No. 2,325,183, issued to me July 2'7, 1943. I

Another object of the invention is to provide an improved cotton gin rib having means for washing or cleaning the cotton lint and being of such construction as to effect separation of said lint from the cotton seeds at the upper portion of the ribexternally of and adjacent the seed roll box, thereby permitting flufling or straightening the lint carried by the saw teeth by the washing means so as to remove extraneous mattertherefrom.

A particular object of the invention is to provide an improved ginning rib having a pronounced ofiset at its upper portion so as to form a space adjacent the seed roll box for permitting sudden expansion of the seed roll immediately above the point at which the saw teeth pass from said box whereby delinted seeds are separated and thrown outwardly from said seed roll so as to be more readily discharged therefrom and to increase the capacity of the ginning unit.

An important object of the invention is to provide an improved rib construction, of the character described, having a medial fin at its upper offset portion intermediate the forward and rear surfaces of the rib to form enlarged chambers or recesses adjacent fluid stream outlets and below the forward peripheral portion of the roll box so as to make possible efficacious cleaning by the fluid streams of' the lint carried into the recesses by the saw teeth.

A further object of the invention is toprovide an improvedrib construction, of the character described, wherein the provision of the enlarged recesses at the oifset portion thereof forms shoulders or flanges for deflecting" the-fluid streams and directing'the same upwardly whereby said streams perform their cleaning action at the desired location.

Still another object of the invention is to provide an improved rib construction, of the character described, having a fluid jet adjacent its oifset portion for directing a fluid stream laterally andupwardly through the space between adjacent ribs to prevent fine trash from sifting therethroughinto the lint flue.

A construction designed to carry out the in vention will be hereinafter described together with other features of the-invention.

p The invention will be more readily understodd from a reading of the following specification and by reference to the accompanying drawing, wherein an example of the invention is shown, and wherein:

Fig. l is a side elevation of a cotton gin rib, constructed in accordance with the invention, shown in relation to the seed roll box and one of the gin saws,

Fig. 2 is afragmentary, sectional view of the upper end of the gin rib,- showing its fluid duct,

Fig. 3 is a cross-sectional View, taken on' the line 3-3 of Fig. 1,

Fig. 4 is an enlarged, perspective view of the upper end of the rib, and

Fig. 5 is a cross-sectional view, taken on the line 5-5 of Fig. 1.

In the drawing, the numeral I0 designates a portion of one of the ginning saws, a battery of which are rotatably mounted in a conventional cotton gin (not shown) below a roll box, indicated by the broken line H. Curved ginning ribs or elements [2 are disposed between the saws Ill in the usual manner and each rib has its lower end secured to a transverselyextending rib rail l3. A similar upper rib rail or bar l4 supports the upper ends of the ribs l2. As is well-known, the seed roll whichaccumulate's in the roll box H is acted uponby the teeth l5 -of the saws l0 stripping the lint from the cotton seeds. The delinted seeds are thrown outwardly from the seed roll and travel downwardly from the roll between the saws along the forward surfaces of the ribsto apointof discharge (not shown).

In order to clean the lint carried by the saw teeth l5 from the roll box between the ribs, streams of air, or other fluid under pressure, are adapted to be directed against said teeth in a direction opposite to the rotation of the saws,

as set forth in my aforesaid patent. A plurality of openings l6 extend transversely through the upper rib rail and air, on other fluid under pressure, is supplied thereto by suitable means, such as the conduit I! (Fig. 2). As will be' hereinafter more fully described, an enlarged, rearwardly offset head l'8 -is formed at the up* per end of each rib and is. bored to provide a passage [9 in communication with one ofthe openings 16. A pair of soutlet'portslor slotsiZl) communicate withthe-lowerportion of the passage l9 and preferably extend laterally therefrom at an angle to the-sides or lateral surfaces ofthe'head l8 (Fig.-3-).., The ports 20 are preferably elongated and flared-vertically,,'-asshown dates seeds, limbs and other large trash, which.

might be pulled into the openings between the ribs by the saws, whereby continued rotation of-" the trash with the seed roll is permitted so as to eliminate choking of said rib openings and possible fires due to friction.

Cleaning chambers or recesses 2| are formed in the side or lateral surfaces of the head by reducing the width or thickness of the central portion of said head intermediate the outlet ports 20 and the forward surface of the head to provide a medial fin 22. A substantially continuous, curved flange 23 bounds the rear, lower and forward margins of each recess 2| and one of the ports 20 extends through the rear portion of each flange in communication with the recess. The fln 22 extends above and below the ports whereby the recesses are of amplified area and provide chambers adjacent the point at which the saw teeth pass from the roll box between the ribs for facilitating the cleaning of the lint carried by said teeth. Due to these recesses or chambers, the lint is permitted to straighten or fluff up and thereby increase the cleaning action of the fluid streams. It is preferable that the lateral surfaces of the fin be tapered rearwardly and inwardly toward the ports so as to direct the fluid streams outwardly toward the saws (Figs. 3 and 4). The marginal flanges 23 not only tend to confine the air streams but also direct the same upwardly toward the saw teeth.

In order to prevent fine trash from sifting downwardly in the openings between adjacent ribs, it is desirable to direct fluid jets or streams upwardly through said rib openings. Such a jet may be provided by a small orifice 24 extending upwardly and outwardly at an angle from the passage [9, as is most clearly shown in Fig. 5.

' From the foregoing, it will be readily apparent that an improved rib construction has been provided for facilitating the cleaning of lint carried by the teeth of ginning saws. This cleaning is accomplished by fluid under pressure externally of the seed roll box in amplified cleaning recesses orchambers wherein the lint has an opportunity to straighten or fluff up, thereby enhancing the cleaning action. Due to the construction of the rib, the fluid streams are directed upwardly so as to carry off trash and extraneous matter removed from the lint by said streams. By offsetting the head of the rib, sudden expansion of the seed roll is permitted to release and separate out delinted seeds.

The foregoing description of the invention is explanatory thereof and various changes in the size, shape and materials, as well as in the details of the illustrated construction may be made, wherein the scope of the appended claims, without departing from thespirit of the invention.

What I claim and desire to secure by Letters Patent is:

1. In a cotton gin having a roll box and a battery of ginning saws therebelow with ginning ribs disposed between the saws and means directing fluid under pressure against the teeth of said saws in a direction opposite to the rotation thereof, a. ginning rib construction including, a curved rib element having its upper end offset rearwardly beyond the contour of the roll box to provide a space behind the roll box for permitting sudden expansion of the seed roll so as to separate and discharge clean seed therefrom.

2. In a cotton gin having a roll box and a battery of ginning saws therebelow with ginning ribs disposed between the saws and means directing fluid under pressure against the teeth of said saws in a direction opposite to the rotation thereof, a ginning rib construction including, a curved rib element having a rearwardly oifset upper portion intermediate the fluid directing means and the point at which the saw teeth pass from the roll box between the rib elements to provide a space for increasing the cleaning effect of said fluid directing means upon the cotton lint carried by said saw teeth.

3. In a cotton gin having a roll box and a battery of ginning saws therebelow with ginning ribs disposed between the saws, each ginning rib having its upper portion ofiset rearwardly beyond the contour of the roll box, means in the offset portion of the rib for directing fluid under pressure in a direction opposite to the rotation of said saws adjacent the'point at which the saw teeth pass from the roll box between the ribs for cleaning the lint carried by said teeth, and means formed in said offset portion for receiving and deflecting the fluid upwardly toward said saw teeth.

4. In a cotton gin having a roll box and a battery of ginning saws therebelow with ginning ribs disposed between the saws, each ginning rib having its upper portion offset rearwardly of the roll box, means in the offset portion of the rib for directing fluid under pressure in a direction opposite to the rotation of said saws adjacent the point at which the saw teeth pass from the roll, box between the ribs for cleaning the lint carried by said teeth, means formed in said offset portion for receiving and deflecting the fluid upwardly toward said saw teeth, and means communicating with the fluid directing means and disposed rearwardly of the fluid receiving and deflecting means for directing a fluid stream upwardly relative to said saws to prevent fine trash from sifting downwardly therebetween.

5. In a cotton gin having a roll box and a battery of ginning saws therebelow with ginning ribs disposed between the saws, a rearwardly offset head at the upper end of each rib providing a space adjacent the point at which the saw teeth pass from the roll box between the ribs and exteriorly of the contour of said box, a passage in the head for directing a fluid stream against said saw teeth in a direction opposite to the rotation thereof to remove extraneous matter from the lint carried thereby, and a recess formed in the head for receiving the fluid stream and being so'shaped that its walls confine and direct the fluid stream upwardly toward said saw teeth.

7 6. In a cotton gin having a roll box and a battery of ginning saws therebelow with ginning ribs disposed between the saws, an enlarged head at the upper end of each rib having a recess in each lateral surface, a flange at the forward and lower margins of each recess, a fluid passage in the head rearwardly of its recesses, and ports for discharging the fluid fromthe passage into the rear portions of the recesses, whereby said fluid is confined and directed upwardly by the flange against the saw teeth in a direction substantially opposite to the rotation thereof for removing extraneous matter from the lint carried by said saw teeth.

7. The combination set forth in claim 6 wherein the lateral recesses and their marginal flanges are formed by a medial fin having forwardly diverging lateral surfaces for directing the fluid toward said saws.

8. In a cotton gin having a roll box and a battery of ginning saws therebelow with ginning ribs disposed between the saws, an enlarged head at the upper end of each rib having a recess in each lateral surface, a flange at the forward and lower margins of each recess, a fluid passage in the head rearwardly of its recesses, ports for discharging the fluid from the passage into the rear portions of the recesses, whereby said fluid is .6 confined and directed upwardly by the flange against the saw teeth in a direction substantially opposite to the rotation thereof for removing extraneous matter from the lint carried by said saw teeth, and an orifice extending substantially laterally from said passage for preventing fine trash from sifting between adjacent ribs.

PRESSLEY E. HOPPER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 897,883 Dickson Sept. 8, 1908 2,219,402 Sanders Oct. 29, 1940 2,325,183 Hopper July 27, 1943