US1332913A - Hull-board construction - Google Patents

Description

J. E. MITCHELL AND D. PARKS.

HULL BOARD CONSTRUCTION.

APPLICATION FILED MAR. I5. 1919.

Patented Mar. 9, 1920.

2 SHEETS-SHEETI "M l I l. E. MITCHELL AND D. PARKS.

HULL BOARD CONSTRUCTION.

APPLICATION FILED MAR. I5. |919.

1 332, 9 l 3 Patented Mar. 9, 1920.

2 SHEETS-SHEET 2.

' UNITED STATES PATENT-crucis.

p j Joan n. meenam. ,AND DENNIS PARKS, ors'r. Louis, mssouar.

IIULLoAnooNsTnUeTIoN.

4 ToaZZ whom itlmogl/,concerm /Be it known that we, JOHN E. MITCHELL useful Improvements in Hull-Board Construction, of which the following is a specifiv cation.

ventors, John E. Mitchell.

This invention relates to a boll breaking and cotton separating machine, and has for its general object an improved construction of. hull board designed in operation to facilitate the process of separating the cotton from the bolls and hulls and to preventl congestion in the working chamber `of the machine. The invention also has for its object to provide means for separately delivering the waste, consisting of hulls and trash, and the unopened bolls Vand wads of cotton, passing from the working chamber so that the latter may be subjected to further treatment to secure the recovery of substantially all of the available cotton from the product fed into the machine.

The diliculty of adjustingthe lower edge of the hull board suiiiciently close to thesaw cylinder to prevent cotton passing through with the hulls and trash without, at the same time, causing a congestion in 'the working chamber by reason of large hull particles and unopened bolls being unable to escape from the chamber, has been pointed out` by-us in prior cases. To overcome this objection, the double hull board construction described and claimed in Patent No. 1,030,913, dated July 2, 1912 was devised by one of the present in- The present invention illustra-tesY another means of accomplishing such purpose while at the same time enabling the use of a simpler construction of machine` in that only a single hull board is employed.- The present machine also permits the recovery of a very high percentage of cotton, in that provision is made for insuring the separation of the hulls and trash, and any unopened bolls and cotton passing from the machine, so that the latter, as stated, may be subjected to further treatment.

The invention is illustrated in the accompanying drawings in which:

' Figure 1 is a cross sectional view of the machine constructed according to our invention; and

Fig. 2 is a broken view in rear elevation Specication of Letters' Patent.

Patentedl Mar. 9, 1920.

Application led Iarch 15, 1919. Serial 110.282,91).

of the hull. board and parts immediately associated therewith.

Referring'now to the drawings, the nu- 4mounted feed rolls 3. Below the rolls 3 'is rotatably mounted a boll breaking cylinder 4, which is 'artially inclosed by means of a casing mem er 5 and a screen 6, a throat, or passage, 7, being provided at the bottom of the chamber formed by the members 5 and 6 for the escape from the boll breaking chamber`of the mixed cotton and hulls produced by the action of the breaking cylinder 4 on the bolls thrown into the hopper. Rotatably mounted in the casing below the boll-breaking chamber is a saw cylinder 8, 'a kicker roll 9, and a doifer roll 10, the construction and operation of whichvare well known, and need not be particularly described. The passage'7 from the bell-breaking chamber communicates with a working chamber 1l, where the mixed cotton, hulls through by the saw cylinder and removed by the doier roll, andv unopened bolls, and hulls and trash, being knocked back by the kicker roll. Coperating with the saw cylinder 8, is a hull board 11, which extends below the screen 6, its lower edge 12 being positioned suiiicientlyclose` to the saw cylinder to prevent the escape of cotton/ through the space 13 provided, while permitting the escape of the greater portion of the hull particles and trash. As frequently happens, however, a certain number of unopened-,bolls will pass into the working chamber, having failed :to be broken up by the breaking cylinder 4, and these are too large to pass through the space 13 between the lower edge of the hull board and the saw cylinder. Also some of the hulls will not be' b-roken apart, and the size of these bodies is such as to prevent them from passing through the passage 13. Such unbroken bolls, unseparated hulls, and pieces of trash, would ordinarily, with lthe use of a single hull board, adjusted as described, collect in the working chamber and sooner or later cause the same to-be congested. To

obviate this result, we provide one or moreother large bodies which cannot escape from the machine through the regular space 13, between the bottom of the hull boardand the saw cylinder. Such larger opening, or openings, are provided by cuttinv one or more recesses 14 in the lower edge o? the hull board, which open into the passage 12, and

conveyer 17, and arrange the passage 13 to' communicate with a chamber 18, in the bottom of which is a conveyer 19, the chambers 16 and 18 being separated by a partition 20. The chutes 15 pass through an upper inclined portion ofthe partition, as shown. The chutes 15 have side walls 15, and the upper ends of these chutes entirely inclose the recesses 14, so that the product passing through these recesses is maintained separate from the product passing through the space 13.

In the operation of the machine, the cotton will be caught up by the saw cylinder 8, and trash and all hulls which have been broken apart, or separated from each other,

will escape through the passage 13 into 'the chamber 18. Any unbroken bolls in the working chamber above the saw cylinder are moved around, or back and forth, by the operation of the saw cylinder very rapidly Within the Working chamber, and, therefore, soon fall, or escape, through the openings 14 in the bottom of the hull board andare discharged by the chutes 13 into the chamber Y 16. This will occur to a greater or'less extent even with a single opening, and in practice, therefore, it has not been found necessary to provide very many of the openings 14. three of-such openings being usually suiicient. The width of the recesses 14 may vary, but ordinarily ve inches would be the maximum Width.

It will be obvious that the bottom edge of the hull board 11 can be set so as to permit a free discharge of hulls through the space 13 without permitting the escape of any cot ton of value with the same into the chamber 18, whereas an occasional lock, orl Wad, of cotton may fall through the larger spaces provided by the recesses 14 with the unbroken bolls into the chamber 16. The hulls comparatively free from cotton in chamber 18 are discharged by the conveyer 19 to thev hull pile, while the unbroken bolls and the small amount of cotton passing into the chamber 16, are carried out of the machine by the conveyer 17, and either conducted to a separate re-cleauer, or returned with the bulk of cotton going to the main battery of the machine.

1. A boll breaking and cotton separating machine affording a working chamber, a saw cylinder operating in said chamber, a hull board coperating with said saw cylinder and providing different sizes of openings past the same for the escape of waste and other products from the working chamber, and means for separately delivering the products passing through the different openings.

2. A boll breaking and cotton separating machine affording a workin chamber, .a saw cylinder operating in said chamber, a hull board coperating with said saw cylinder having its lower edge defining the size of a passage past said saw cylinder and provided wit a recess afordin an enlarged opening past said saw cylin er, said passage and opening affording means of escape ',for waste and other vproducts :from said working chamber, and a chute leading from said recess, whereby to separately deliver the products passing; through said recess from the products passing through the smaller space provided by the remainder of the bottom edge of the hull board.

3. A boll breaking and cotton separating machine' affording a working.v chamber, a saw cylinder operating in said working chamber,a hull board coperatin with said saw cylinder having its lower e ge portion dening the size of a passage past said saw cylinder and provided with a plurality of recesses aording enlarged openings ast the saw cylinder, said passage and openings affording means of escape for Waste and other products from said working chamber, a chute secured about each one of said recesses for conducting away the products passing through such enlarged openings, and means for maintaining separate such products from those passing through the assage provided by the remainder of the hull board.

4. A boll breaking and-cotton separating machine having a casing providing in its bottom two separated compartments and affording a working chamber, a saw cylinder operating in said chamber, a hull board cooperating with the saw cylinder and having its lower edge portion defining'the size of a passage past said saw cylinder communicating with one of said compartments, said passage affording means of escape for waste from the working chamber, and said hull board being provided in its lower edge portion with a .recess affording an enlarged opening past the saw cylinder for the escape chamber, and a chute leading from said recess to the other compartment.

5. A boll breaking and cotton separating machine comprising a casing affording avWorlnng chamber and havlng 1n lits bottom two conveyers separated by a'partition, a saw cylinder operating in said chamber, a hull-board coperating with said saw cyll inder, and having its lower edge defining board being provided in its lower edge portion with a recess affording an enlarged opening past said saw cylinder for the escape of relatively large bodies from said Working chamber, and a chute having its upper end inclosing the bottom of said re' cess and its lower end extending throu h said partition and communicating With t e other conveyer.

In testlmony whereof, We have hereunto set our hands. l,

JOHN E. MITCHELL. DENNIS PARKS.

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