US2137744A - Roll dumping device for cotton gins - Google Patents

Description

Nov. 22, 1938.

J. A. sTREuN 2,137,744

. l ROLL DUMPING DEVICE FOR COTTON (.rINS` Filed July 22, 1936 4 Sheets-Sheet l Nov. 2.2, 1938. J. A. s TRE'UN 2,137,744

, ROLL DUMPING DEVICE FOR COTTON GINS Filed' July 22, 1936 4 sheets-sheet 2 JM Jaw@ NOV. 22, 1938. 1 Al STREUN 2,137,744

ROLL DUMPING DEVICE FOR COTTON GINS Filed July 22, 195 4 Sheets-Sheet 3 Nov. 22, 1938. J. A. sTRl-:UN'l 2,137,744

ROLL DUMPING DEVICE FOR COTTON GINS Filed July 22, 1936 4 Sheets-Sheet` 4 Patented Nov. 22, 1938l 2,137,744 I 'ROLL Domme DEVICE ron oo'rroN cms John A. Streun, Sherman Tex., assigner to Hardwicke-Etter Company, Shaman, Tex., a company of Texas applicata@ nay 2a, 193s, serial No. 91,975 er claims. (ci. isi-55)" li/iy invention relates to cotton gins and more particularly to the structure of the roll box and the gin breast and is a continuation in part of my co-pending application Serial No. 662,555, hled March 24, 1933. In delivering the cotton to the gin saws, it is customary to feed the cotton into the gin breast where the hulls are removed and the seed cotton is carried past the hulling ribs into what is termed the roll box. A roll of seed cotton the full length of the gin is formed above the gin saws from which the lint is caught by the saws and carried past the'ginning ribs, the lint passing out of the ginand the seeds and foreign material being delivered down- 15 wardly out of the gin breast. In handling cotton in this manner, it is found that the seed cotton is frequently accompanied by hulls andsticlrs and chaff which accumulate in the roll box until bits ci the trash are hnally caught by the gin go saws and carried around with the lint from the gin. This provides a poor sample of cotton,v as the lint is mixed with pieces of'trash and hulls and is undesirable for that reason. Furthermore, when the cotton and trash have accumulated in the roll vboar, pieces are apt to catch in the ginning ribs and particularly so in case sticks and chad accompany the cotton, so that the spaces between the ribs become clogged with accumulations or foreign matter and cotton lint and eventually the friction resulting from the contact oi the saws against the accumulations in the ribs will cause hre.

It hence becomes necessary to clean the roll box and to remove the accumulation from the 3,-, ribs of the gin. This has been a dificult operation'. The old method has involved lifting the forward side of the gin breast away from the roll box by manual labor, so as to obtain access to the interior. This takes a material amount of 9 time and requires the efforts of several workmen.

Furthermore, it is diiiicult, under ordinary circumstances, to get in above the gin breast even when it is moved forward to get access to thel interior of the roll box.

15 Itis an object of my invention to provide means. by which the outer gin breast may be moved forwardly away from the rearward portion of the breast so as to open the roll box and allow the roll to be dumped out along with thetion.

outer breast sections provided with means ior moving the sections as a unit away from the gin saws, and also with means for moving the outer section away from .the inner section when the i inner section is positioned between the saws or 5 when the sections are moved away from the saws so as to provide a passage through which the roll in the roll box may be discharged downwardly between the separated lower sections.

llt is a further obiectto provide a gin breast lo A door construction so that access may be vobtained to the interior ci the roll box without the necessity of moving the entire front oi the gin breast.

li contemplate the provision oi a movable wall or door at the upper /ortion ci the outer gin it breast which may be yung outwardly to open up the roll box andallow convenient access to lin the drawings herewith, Figure l is an end elevation oi" a gin breast and roll bon showing the arrangement oi' parts whereby the gin breast is moved to and from operating position.

. Figure 2 is a vertical section through the parts 35 shown in Figure "i showing the interior oi the box and with the ginbreast in position to remove the roll from the roll box.

Figure 3 is an end view' similar to Figure l showing the mechanism for raising and lowering 4o the gin breast.

Figure 4 is an opposite end view of the gin breast showing the operating handle and its associated parts for actuating the gin breasts, in

their closed positions.

Figure 5 lsv-a view similar to Figure 4 with theY operating handle and its associated parts moved to raise the gin breast.

Figure 6 is a detail exploded view of the hinge for the closure, and

Figure '7 is a detail view of the hinged cover connection, in lits opened position. I

I contemplate employing my device in connection with any ordinary make of cotton gin, and only so much of the cotton gin is shown as is may be operated in the usual manner by mechanism not shown.

The gin breast 5 is pivotally mounted as at 1 to the gin frame I and preferably; comprises a `rear member 5 having an upper roll box section 6' and a lower section 1' (Figure 2). Associated with the rear member 5' is a movable front or lforward member 8' pivoted as at 8 to the gin breast and similarly formed with an upper roll box section 9 and a lower section I0'. The upper sections 6' and A9' constitute the roll box I which preferably is of oval or egg-shape to accommodate the changing pressure on the roll and thus insure the roll turning freely in the roll box. Due to the particular configuration of the roll box, the roll built up therein is difficult to break and seldom if ever stops during the operation of the machine, thus the gin may be effectively used either in artight or loose rolled ginning operation. The arrangement of the gin breast is such that the center of gravity is inwardly from the point of suspension at 8 so that the outer portion of the gin breast is held inwardly by gravity.

A series of gin ribs 4 are secured at their ends by the screws 6 to the rear member 5 of the gin breast and .have their intermediate portions curved away from the shaftl 2 in the manner as shown in Figure 2. 'I'he front member 3 of the gin breast carries a series of hulling ribs 9 which are positioned below the roll box "I0 and are curved toward the gin saws 3 so that when in their operative position, the saws 3 will pass between the gin ribs 4 and the hulling ribs 9 as indicated in Figure H1. 'I'he lower ends of the hulling rib 3 may be secured to the front breast member 8 as at and are connected at their upper ends to the section 3' in any suitable manner such as by screws or athe like not shown. j

The. ginning ribs 4 are placed close together so that the saws 3 when running between them, effectively strip the lint from the seed. The seed escapes between the saws and over the surface of the ribs and is discharged onto a chute leading from the gin. The'huller ribs 9 carried by the outer breast member 9' are preferably spaced wider apart than the gin ribs 4. The saws protrude between the ribs and extend into the outer huller chamber 43 when the gin is in operation as clearly shown in full lines in Figure 1. It will be seen that asthe picker roll I2 throws the cotton locks against the saws 3, the latter catches the cotton and pulls it through the huller ribs 3 and into the roll box l0. As the cotton is pulled through the ribs, the sticks a'nd burrs are stripped back on the picker roll which feeds them out of the breasts through a space between the picker rolls |2'and the ribs. During this operation the saws 3 catch any locks of cotton which may attempt to pass between the ribs and roll I2.

Fingers Il carried by a rotatable shaft I3' are positioned directly above the huller ribs 9 and are arranged to be raised or lowered by the operating handle 2 positioned outside of one end of the gin. The fingers II' are so arranged that during the operation of the gin they may be raised to cause the roll of cotton and seed in the roll box I l to be tightened and thus the friction of the roll on the saw teethA causes more lint to be cut from the seed. 0n the other hand, the

ngers I I' may be lowered to produce a lighter4 roll with the result that the seed is not as efmay be moved to vary the cleaning of the seed as desired.

The picker or agitator roll I2 is mounted upon the shaft I3 carried in bearings I4 so that it may be adjusted .toward and away-from the gin-saws by means of a rack I5 and a pinion I6 which is operable by means of the lever I1 so as to adjust the operating frame I8 upon which the roll I2 is supported.

The forward portion of the gin breast when in position as shown in Figure I, closes the lower side of the roll box I0 and in order to be enabled to dump the roll from the roll breast I have provided a mechanism to swing the outer part of the gin breast away from the gin saws so as to control the opening I9 to allow the cotton roll to be dumped out of the roll box.

This mechanism isshown particularly in Figure l. I provide a pair of toggle levers 20 and 2|. 'Ihe lever 20 is pivoted at its forward end at 22 on the outer gin breast, and ata point slightly below the center thereof. The inner end of the lever 20 is formed Witha semi-circular socket 22a thereon into which fits a cylindrical end 23 on the lever 2| The rearward end of said lever 2| is pivoted at 24 to the rearward portion of the gin breast.

'I'he lever 2| is provided with an eyelet 25 adjacent the end 23 to engage with a tension spring 23 which is extended downwardly and secured at its lower end to a post 21 on a forwardly extending lug 23 on the rearward portion ofthe gin breast. This spring normally tends to straighten out the toggle as will be apparent. 'I'he downward movement of the lever 20 is limited by engagement with a post 30 on the end of the gin breast as' seen in Figure l. The same movement of the lever 2| is also limited by engagement with a post 3| on the rearward portion of the gin breast.

A toggle joint is arranged on opposite sides of A the gin so as to be simultaneously operable by means of a link 32l pivoted at its lower end, as at 33, to the lever 2| at a point spaced from the joint between the levers 20 and 2| 'I'he upper end of one of the links 32 is connected, as at 34, to an arm 35, which is secured at its lower end to the transverse shaft 36. v'Ihe shaft 36 extends completely across the gin and has secured to its opposite end an arm 35' pivoted as at 34 to its adjacent link 32.

The arm 35 is moved through means of a lever arm 31 having a sliding extension 38 thereon, said extension fitting overA the arm 31 and having a slot 38 through which projects a pin 40 on the arm 31. It will be seen that upon the movement of the operating ar'm or handle 31, the shaft 36 will be rotated to simultaneouslymove the toggle joints at each nend of the gin so as to raise or lower the front member 8. l'I'he length of the arm 31 may be increased as desiredV and is limited by engagement of the pin 40 with the ends of the slot in which it moves.

The upper portion of the forward gin breast is also constructed to be accessible for cleaning and the inner sides to a wall 43 of sheet metal extending along the front of the gin.

The lower end of the front section 9' of the breast may be reinforced by a longitudinal member 44 preferably formed with an upper section 43' and a lower section 44', the lower section having a reduced or cut-out -portion 45 adjacent each of the upper ends thereof into which extends the downwardly projecting lugs 45 that straddle the hinge pin 46 carried by the sides of the breast. The inner surface of the door or closure 4| has an extension or lip 4|' normally arranged to overlap the adjacent inner surface 4a in the manner as shown in Figure 2. It will be seen that when the door 4| is swung outwardly to the position as shown in dotted lines in Figure 2, the door extends across the upper portion of the hulling chamber to close the same, thus preventing the seed in the roll box from beingdischarged into the hulling chamber when the door is swung to its open position. Further, the ex tension 4| will be maintained infrictional engagement with the adjacent upper curved surface of the section 44' so as to provide a seal which precludes any of the material in the roll box. I fromdescaping or working its way between or through the hinge. As the lugs 45 are releasably connected to the pins46 and loosely it within the recess formed between the cut-out portion 45' and the adjacent wall of the gin, the door `4| may be readily removed from the roll box. The'bolts 41 act as a latch for maintaining the door 4| in its closed position. When it is desired to obtain access to the interior of the roll box Il), the bolts 41 at each end of the door are Withdrawn so that the latter may be swung back to the dotted line position as shown in Figure 2.

In the operation of the lever system so as to dump the roll from the roll box, the operator may extend the lever arms 31 and 38,50 as to obtain the proper leverage and may then move the lever forward into its dotted line position as shown in Figure 1. This will give a down thrust on the link 32 and straighten out the toggle levers 20 and 2| into the dotted line position as shown, and

thus move the forward gin breast outwardly into the Figure 2 position and allow the roll in the roll box to be dumped downwardly and allow the trash to be entirely removed. If there is material clogging in the ribs of the gin the door 4| may be unlatched and swung open so that access may be obtained to the interior of the roll box so as to further remove the accumulations therefrom. v

When the cleaning has been accomplished the levers may be drawn back into the Figure 1 position allowing the forward gin breast to swing into operative position and the ginning may then proceed. v

It will be seen that the door 4| may be opened at any time when it is desirable to obtain access to the roll box and any lint or sticks or foreign matter tending to clog the ribs adjacent the gin saws may be removed Without difficulty.

The gin breast 5 and its associated parts may v be swung away from the gin saws 3 as seen in vFigure 2 by any suitable mechanism. As shown,

such as by the set screw 54 and has/a depending arm 55 connected as at 56 to a coil spring 51 secured at its opposite end to a xed portion of the gin. The upper end of the arm 52 is preferably bifurcated as at 58 so as to receive the adjacent end of a link 59 which is pivoted thereto by the pin 60. The link 59 adjacent the pin 6|) is provided with an offset extension or head 6| arranged when the arm 52 and link 59 are extended, to overlap and engage the arm 52. The link 59 is connected to the rear of the gin breast 5 as at 62.

The other end of the shaft 53 (Figure 3) pro jects beyond the opposite end of the gin and has connected thereto a lever 63 similar in construction and operation to the lever 52. A'coil spring 64 adjust-ably secured as at 65 to the frame is connected as at 66 to the depending arm 61 of the lever B3. A link 68 similar in construction to the link 59 is pivoted as at 69 to the lever 63 andhas a head portion arranged to engage the link 63l when these parts are extended. A brake arm 1| together with the link 68 are pivotally connected to the breast by the bolt 12. The brake arm 1| is provided with a braking surface or portion 13 arranged to frictionally engage the pulley 14 on the picker roller shaft I3. A rod -15 is connected at one end to the brake arm 1| and loosely extends through a lug 16 which is pivoted as at 11' to a depending portion of the link 68. A coil spring 11 confined between the lug and the adjustabl nut 18 acts to exert an upward pressure on the brake arm 1| and its associated parts. i

In operation, the cotton `fed into the hulling chamber 48 is cleaned of hulls and the like by the picker roll I2 and is thenl drawn by the gin saws 3 past the hulling ribs 9 into the roll box IIJ where it accumulates into a roll from which it is drawn by the saws past the ginning ribs. When it is desired to dump the roll the handle 50 is swung by the operator from the position shown in -Figure 4 to that disclosed in Figure 5 whereupon the arms 52 and 63 at opposite sides of the gin are simultaneously rotated by the shaft 53,

thus causing the links 59 and 68 to be moved outwardly and the members 5' and 8 to be moved Awith the. gin breasts as a unit away from the breast and its associated parts in their raised positions. The springs 51 and 64 act as equa-lizers and tend to facilitate the movement of the breast f to its raised position upon the actuation of the handle 50.

When the breast has been raised the lever 31 is moved from its full line position, Figure 1, to its dotted line position, so as to cause the front` breast member 8' to be moved outwardly relative to the rear breast member to form the opening or passage I9 `to permit the unobstructed discharge of the roll from the roll box.

When the breast 5 is in its lower position as shownin Figure 3, the brake 13 .is held off of the pulley 14 by an adjustable nut 19 thus allowing the pulley to be driven by the belt B9 from the pulley 8| on the saw shaft 2. Adjustable idler rollers 83 may be provided for controlling the stretch of the belt 8D. When the gin is raised and the parts moved to the position asshown in Figure 5. the belt 80 is slacked and the braking surface 13 is applied to pulley 14 with pressure f created by the compression of spring 11, thus stopping the pulley 1l the instant the breast is moved away from the saws 3. The engagement of the heads 6I and 10 with the levers 52 and 63 which takesplace only after the levers 52 and 63 and the linksI 59 and 68 move past their dead centers, constitutes locking means which maintains the breast in its raised position without danger of it falling and is only released upon the returning of the handle 50 to its normal operative position as shown in Figure 4. l

As the toggle mechanism for actuating the front breast is separate from the means for raising the breasts away from the gin saws, it will be Mseen that these instrumentalities may be selectively operated and that if desired the front breast member 9' may be moved away from the saws without affecting the position of the gin breasts. However, in normal operation the handle 50 is first actuated to raise the breast 5 and its associated parts away from the saws 3 and then the lever`31 is lowered to move the outer g no attempt is made to pick the lobes from the burrs and the burr with the-other parts are pulled from the stalk and brought to the gin so that it is no longer practicable or feasible to gin the cotton straight into the roll as was the early practice. Consequently, the-seed cotton at best is very rough and in order to keep the gradesup to a merchantable point, the cotton is ginned through huller gins provided with auxiliary ribs which remove a large percentage of the foreign matter but do not get it all. -As a result this foreign matter enters the roll to be cut by the saws, which means that trash and foreign matter gets into the ginned lint. Manifestly the longer the gin runs the more infested the roll becomes with foreign matter and the more trash is mixed in the sample.

By reason of the present invention, means 4are provided to make it easier for the operator to dump the rolls and rid them of this infested roll of foreign matter, thus raising' the grade of the lint. In order for the rolls to be completely clean and the sample be of the best obtainable grade, the rolls must be dumped a number of timlesl a day. Heretofore, the manual lifting of the parts ofthe gin breast due to the weight thereof, has been very difficult and laborious, consequently the operators failed to dump the rolls as often as they should with the result that the majority of the days ginning was of very poor grade and the samples seriously damaged by the operators inclination to avoid the hard labor and loss of time necessary to dump the rolls. y

It will be seen that the present invention provides two means for easily and quickly cleaning the rolls, one of which consists in hinging the roll box lid at the .bottom so that the operator may have convenient access to the rolls and hand pick the sticks and foreign matter therefrom. If the operator nds this task too difficult he may resort to the mechanical roll dump means which merely requires the actuation of the levers which control 'the movement of the outer gin breast member l' so that the roll may be dumped or` discharged from t e bottom. 'I'his simple operation which can be one at the expenditure of very little time makes the job so easy that all inclinations by the operator tov avoid dumping the rolls will be re- .moved and the quality and grade of the sample will be materially improved. f

Manifestly instead of employing the toggle means shown" for actuating the front breast member and the lever construction for raising the gin breast as a unit away from the saws, any other suitable means may be used for actuating the gin breasts and for moving the front breast member relative to the rear breast member.

It is to be understood' that the form of the invention shown and described, is merely illustrative of a preferred embodiment and that such changes may be made as fall within the purview of one skilled in the art without departing from the spirit of the invention and the scope of the appended claims;

I claim:

1. In a cotton gin. a gin saw cylinder, a gin breast including a rearward section and a forward section, a pivotal support for `the upper end of said forward section, said sections being held in engagement by gravity and adapted to'be disengaged by a relative outward movement of said forward section, toggle levers engaging said forward and rearward sections and pivotally connected together and adapted to be disengaged by relative longitudinal movement, an arm'on said rearward section, a link connecting said arm and one of said levers and a handle on said arm whereby said arm may be moved to operate said toggle to swing the lower end of said forward section outwardly to discharge material from between said sections, and means to support said levers in alignment when said forward section is moved away from said rearward section.

2. In a cotton gin, a gin saw cylinder, a gin breast including a rearward section and a forward section, an upwardly removable pivotal support on the upper end of said forward section, toggle levers engaging said forward and rearward sections, a cylindrical knuckle on one end of one of said `levers engaging within an open socket in the mating end of the other of said levers'whereby said levers may bev disengaged,

means to hold said levers aligned when disengaged, an arm on said rearward section, a link connecting said arm and one of said levers and a handle on said arm whereby said armmay be moved tooperate said toggle to swing the lower end oi' said forward section outwardlyto dis-v charge material from between said sections.

3. A cotton gin, a gin saw cylinder, a gin breast, a forward section pivotally supported at its upper end and adapted to be detached therefrom by relative longitudinal movement of said forward section. a roll box to the rear' of said section above said cylinder. a pair of longitudinally separable toggle levers connecting said forward section to the body of said gin breast, means whereby said toggle levers may be moved into alignment to move the lower endA of said section forwardly and open said roll box downwardly, means to support said levers in alignment, and a spring to resist the movement of said levers from aligned position.

.4. In a cotton gin, a saw cylinder, a gin breast including a forward section having a cotton rec eiving chamber, the inner side of which has a door at its upper end and hulling ribs at its lower end, said door having a hinge member at its lower end including a pair of projecting lugs and a hinge pin upon which said member is supported by gravity, whereby said door may be lifted upwardly away from said pin, and a 'wall on said -door extending downwardly past said hinge on its inner side to house said hinge in both open and closed positions of said door.

5. In a cotton gin, a gin breast including a forward section and a rearward section, a cotton roll box between said sections, a door on said forward section at the forward side of said roll box, a hinge thereon at its lower end, said hinge being releasable on an upward movement of said door, and an inner wall on said door extending downwardly past said hinge to protect said hinge when said door is in either open or closed position.

6. In a cotton gin, a saw cylinder, a gin breast, a cotton roll box above said cylinder, a door on said breast at the forward side of said roll box, a hinge thereon at its lower end, said hinge being releasable on an upward movement of said door,

and an inner wall on said door extending downwardly past said hinge to protect said hinge when said door is in either open or closed position.

7. In a double rib cotton gin, a gin breast member having an uppe` roll box section and a lower ribbed section, a second breast member having an upper roll box section and a lower ribbed section, gin saws normally extending through the ribs on both of said rib sections, a pivotal mounting on which both sections may be swung to clear the ribs on said sections from the gin saws, a pivotal mounting for said second breast member, said second breast member having a closure hinged at its lower end-thereto, said closure having an extension to seal the 'hinge to prevent material in the roll box from escaping between the hinge when the closure is moved relative to the gin breast, and means connected to said second breast member to move the same on its pivotal mounting away from the other breast member whereby to provide a passage through which` the roll in the roll box may be discharged downwardly between the separated lower ribbed surfaces of said members.

8. In a double rib cotton gin, a gin breast member having an uppe'r roll box section and a lower ribbed section, a second breast member having an upper roll box section and a lower ribbed section,` gin saws normally extending through the `ribs on both of said rib sections, a pivotal mounting on` which both sections may be swung to clear the ribs on said sections from the gin saws, a pivotal mounting for said second breast member, said second breast member having a closure releasably lhinged at its lower end thereto, said closure having an extension to seal the hinge to prevent material in the roll box from escapingbetween the hinge when the closure is moved relative to the gin breast, and means connected to said second breast member to move the same on its pivotal mounting away from the other breast member whereby to provide a passage through which the roll in the roll box may be discharged downwardly betweenA the separated lower ribbed surfaces of said members.

9. In a double rib cotton gin, a gin breast member having an upper roll box section and a lower ribbed section, a second breast member having an upper roll box section and a lower ribbed section, gin saws normally extending through the ribs on both of said rib sections, a pivotal mounting on which both sections may be swung to clear the ribs on said sections from the gin saws, a pivotal mounting for said second breast member. said second breast member having a closure hinged at its lower end thereto, said closure adjacent the hinge having an extended portion normally overlapping the hinge and arranged to cover the same when the closure is moved relative to the gin so as to provide a seal for preventing the escape of material from the roll box between the hinge joint, and means connected to said second breast member to move the same on its pivotal mounting away from the other breast member whereby to provide a passage through which the roll in the roll box may be discharged downwardly between the separated lower ribbed surfaces of said members.

10. A gin breast of the class described including a rear breast member and an outer breast member, and a closure hinged at its lower end to the outer breast member, said closure adjacent the hinge having an extended portion normally overlapping the hinge and arranged to provide a seal for preventing the escape of material from the gin breast between the hinge when the closure is moved outwardly relative to the gin breast. 11. In a double ribbed cotton gin, a gin breast member having an upper roll box section and a lower ribbed section, a second breast member having an upper roll box section and a lower ribbed section, a gin saw cylinder having saws normally extending through the ribs on both of said sections, a pivotal mounting on which both sections may be swung to clear the ribs on said vsections from the gin saws, means for simultaneously moving said sections away from the gin saws and for maintaining the sections in their displaced positions, a separate pivotal mounting for said second breast member, and means connected to said second breast member to move the same on its pivotal mounting away from the other breast member while both breast members are clear of the gin saws and to maintain the same in its spaced position whereby to provide an unobstructed passage-through which the roll in the roll l box may be discharged downwardly between the separated members.

12. In a double ribbed cotton gin, a gin breast member having an upper roll box section and a lower ribbed section, a second breast member having an upper roll box section and a lower ribbed section, a gin saw cylinder having saws normally extending through the ribs on both of said sections, a pivotal mounting on which both sections may be swung to clear the ribs on said sections from the gin saws, hinged members for simultaneously moving said sections away from the gin saws, means when said members are moved past their dead centers to maintain the sections in their displaced positions, a separate pivotal mounting for said second breast member, means connected to said second breast member to move the same on its pivotal mounting away from the other breast member, and means for maintaining the second breast member in spaced relation to the other breast member while both breast'members are clear of the gin saws whereby to provide an unobstructed passage through which the roll inthe roll box may be discharged downwardly between the separated members.

13. In a double ribbed cotton gin, a gin breast member having an upper roll box section and a lower ribbed section, a second breast member having an upper roll box section and a -lower ribbed section, gin saws normally extending through the ribs on both of said sections, a pivotal mounting on which both sections may be swung to clear the ribs on said sections from the gin saws, a pivotal mounting for said second breast member, said second breast member having a closure for the roll box hinged at its lower end thereto, and means connected to said second breast member to move the same on its pivotal mounting away from the otheri breast member whereby to provide a passage through which the roll in the roll box may be discharged downwardly between the separated members.

14. In a double ribbed cotton gin, a gin breast memberl having an upper roll box section and a lower ribbed section, a second breast member having an upper roll box section and a lower ribbed section, gin saws normally extending through the ribs n both of said sections, a pivotal mounting on which both sections may be swung to clear the ribs on said sections from the gin saws, a pivotal mounting for said' second breast member, a closure for the roll box, said closure being hinged at its lower end to said second breast member and arranged to swing outwardly relative thereto, and means connected to said second breast member to move the same on its pivotal mounting away from the other breast member whereby to provide a passage through which the roll in the roll box may be discharged downwardly between the separated members.

15. In a double ribbed cotton gin, a gin breast member having an upper roll box section and a lower ribbed section, a'second breast member having an upper roll box section and a lower ribbed section and a hulling chamber, gin saws normally extending through the ribs on both of said sections, a pivotal mounting on which both sections may be swung to clear the ribs on said sections from the gin saws, a pivotal mounting for" said second breast member, a door-hinged to said second breast member and arranged yto move outwardly across the hulling chamber, and means connected to said second breast member to move the same on its pivotal mounting away from the other breast member whereby to provide a passage through which the roll in the roll box may be discharged downwardly between the separated members.

16. In a double ribbed cotton gin, a-gin breast. 'member having an upper roll box section and a lower ribbed section, a second breast member having an upper roll box section and a lower ribbed section anda hulling chamber, gin saws normally extending through the ribs on both oi' said sections a pivotal mounting on which both sections maybe swung to clear the rlbs on said sections from the gin saws, a pivotal mounting for said second breast member, a doorhinged at its lower end to said second breast member and arranged to move outwardly across the hulling chamber,

and means connected to said second breast member to .move the same'on its, lpivotal mounting away from the other breast member whereby to provide a'passage through which the roll in the roll box may be discharged downwardlybetween y the separated members.

17. A gin breast of the class described includ-A ing a rear breast member and an outer breast member, and a closure hinged to the outer ybreast member, said closure adjacent the hinge normally overlapping the inner 'wall of the outer breast member and arranged to provide a seal for preventing the escape of material when the closure the hinge when the door is moved relative to the gin breasts. l

19. Ina cotton gin, an inner breast having'an upper roll box section and a lower ribbed section, an outer breast having an upper roll box section and a lower ribbed section, a gin saw cylinder having saws normally extending through the ribs on both oi said sections, a xed upper pivotal mounting for both of said breasts on which said inner breast is directly but` revolubly mounted and around which both of said breasts concentrically swing, said breasts being free to move outwardly at their lower ends, a separate upper pivotal mounting on the inner breast forA the outer breast, and meanspivotally mounted on the gin and operatively connected to the outer breast for moving the latter away from the inner breast /so as to provide a passage of relatively increased area through which the roll in the roll box may be discharged downwardly between the separated breasts.

a20. In a cotton gin, an inner breast having an upper roll box section and a lower ribbed section, an outer breast having an upper roll box section and a lower ribbed section, a gin saw cylinder having saws normally extending through the ribs on both of said sections, a iixed upper pivotal mounting for both of said'breasts on which said ,inner breast is directly but revolubly mounted and around which both of said breasts concentrically swing, said breasts being free to move in the roll box may be discharged downwardly between the separated breasts, an operating mem, ber connected to said means forcontrolling the movement of the outer breast relative to the inner breast, and means for retaining the outer breast i in its opened position.

21. In a cotton gin, an inner breast having anA upper roll box section and a lower ribbed section, an outer breast having an upper roll box section and a lower ribbed section, a gin saw cylinder. having saws normally extending through the ribs on both of said sections, an upper pivotal mounting on the inner breast for the outer breast, and means movably mounted, on. the gin and operatively connected to the outer breast for moving the latter away from the inner breast and for. releasably maintaining the same in its spaced position for any desired period of time so as to provide and maintain a passage of relatively increased area through which the roll in the roll box may be discharged downwardly between the separated breasts.

22. In a cotton gin, aninner breast having upper roll box section and a lower ribbed section, an outer breast having an upper roll box section and a lower .ribbed section, a gin saw cylinder having saws normally extending through the ribs on both of said sections. an upper pivotal mounting on the inner breast for theo ter breast, and manually operable means pivota) y mounted on thegin and operatively connected to the outer breast for moving the latter away from the inner breast and for releasably maintaining the same in its spaced position for any desired period of time sol as to provide and maintain la passage of relatively increased area through which the roll in the roll box may be discharged down- 23. In a cotton gin. an inner breast having an upper roll box section and a lower ribbed section, anouter breast having an upper roll box section Aand a lower ribbed section. a gin saw cylinder having saws normally lextending Vthrough the ribs yon both of said sections, an upper pivotal mount` ing on the inner breast for the `outer breast. means movabiy mounted on the'gin and operatively connected to the outer breast for' moving the latter away from the inner breast and for releasably maintaining the'same in its spaced position locally desired period oi time so as to provide and a passage ol relatively increased area through which the roll in the roll bon may be discharged downwardly between the separated breasts, said outer breast being provided with a huiling chamber, and a door pivot/ed at its lower end to the outer breast, said door ing on the inner breast tor the outer breast,v

means movably mounted 'on the gin and operatively connected to the outer breast for moving the latter away from the inner breast and for releasably maintaining thesame in its spaced position for any desired period of time so as to provide and maintain a passage of relatively y-increasec'l area through which )the roll inthe provided with. a huiling chamber, a door pivoted I at its lower end tothe outer breast at a point substantially at the horizontal center oi said roll box, said door arranged to swing outwardly across the hulling chamber thus preventing the materiai in the roll box from discharging into the huliing chamber when the door is swung to its opened position, and retaining means for holding said door normally in its closed position.

25. In a cotton gin, a gin saw cylinder, a gin breast including a rearward section, a forward section pivotaliy supported at its upper end, a hulling chamber in said forward section, and a door hinged to the forward section and arranged to swing outwardly across the huiling chamber, said door having means for providing a seal to prevent material in the gin :fromA escaping between the hinge when the door is moved relative to the mln. breast. y

26. In a cotton gin, a gin saw cylinder; a gin breast including a rearward section, a movable lcrward section, a huiling chamber in said forward section; a roll box between said sections: means whereby the lower end of said forward section may be moved forwardly to dump the roll from said roll box; and a door hinged to the forward section and arranged to swing outwardly across the hulling chamber, said door having means lor providing a seal to prevent material in the gin from escaping into the hinge when the door is moved relative to the gin breast.

27. In a cotton gin, a gin saw cylinder; a gin' breast including a rearward section, a movable 'iorward section, a hulling chamber in said'iorward section; a roll box between said sections; means for moving the fdrward section away from said rearward sectionito dump the roll from the roll box; and a door hinged to the forward section and arranged to swing outwardly across the hullingchamber, said` door having means for providing a seal to prevent materialV in the gin iromescaping into the hinge when the door iiin moved relative to the gin breast.

JOHN A. STREUN.

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