US276523A

US276523A - Peters

Info

Publication number: US276523A
Authority: US
Publication date: 1883-04-24
Anticipated expiration: 1900-04-24

Description

3 Sheets-Sheet 1.

(N'o'Model.)

VGOGKLE SCREEN.

Patented A131224,

No.v 276,523.

(No Model.) s sheets-sheen 2.

vJ. B. GORNWALL.

` GOGKLE SGREEN, No. 276,523. Patented Apr.24, 1883.

(No Model.) 3 sheets-'sheet 3. J. B. CORNWALL cocKL-.E SCREEN. No. 276,523. Patented Apr. 24, 1883.

n. Ferias. Pmwurhesmplw. wasmngw". Dit;

UNITED STATES PATENT GEEIcE.

JOHN E. COENWALL, OE MOLINE, ILLINOIS, AssIGNOE 'ro TEE EAENAED a LEAs MANUFACTURING COMPANY, OE sAME PLACE.

CocKLE-scREEN.

SPECIFICATIONMfo-rming part of Letters Patent No. 276,523, dated April 9 4, 1883.

Application filed `Det-,amber 11, Issa. (No model.) I

To all whom it may concern Be it known that I, JOHN B. CORNWALL, o

Moline, in the county ofRock Island and State of Illinois, have invented certain new and useful Improvements in Cockle-Screens; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, 1o which form part of this specification, in

which- V Figure I is a perspective view of one end of the machine, the belts C being removed. Fig. 2 is a perspective view of the opposite end of the machine. Fig. 3 is a vertical cross-section through the machine,the discharge-hopper be. ing removed. Fig. 4is an end elevation. Fig. 5 is a side elevation of my invention. Fig. 6 is a detail, showing one of the oblique blades 2o of the drum inside of the cockle-screen B.

Similar letters of reference indicate corresponding parts in the several figures.V

My invention relates to certain novel improvements on the cockle-'screen for which Letters Patent were granted to me bearing date on the 14th day of September, 1880, and numbered 232,242; and the nature of my invention consists in such combination of parts as will be hereinafter claimed. 3o A designates the frame of the machine, in which is supported a cylindrical cockle-screen, B, that is embraced about two-thirds of its circumference by means of endless belts C C C, preferably made of two-ply7 rubber b elt- 3 5 ingsay about twelve inches wide. These belts C pass around pulleys a, which are endwise adjustable on their shafts, and which are secured thereon by means of set-screws s, as shown in Fig. 5. 4o The pulley-shaft D is mounted in journalboxes on top of the frame A, on one side of the vertical plane intersecting the 4longitudinal axis of the said screening-cylinder B.

The pulley-shaft D is mounted in journal- 4 5 boxes on cheek-platesA, and this roller is arranged on the right-hand side of the vertical plane intersecting the longitudinal axis of the screening-cylinder B, beneath said cylinder.

The pulley-shaft D2 is arranged on the outside 5o of the frame A, and this shaft has its end bearings in spring-hangers E, which are adjustable by means of screw-bolts p, or their equivalents, for the purpose of regulating the tension or pressure ofthe belts C C U against the circumference of the screening-cylinder. The shaft D2 is provided with the pulleys a, held by set-screws, as shown in Fig. 5, which are independently endwise adj nstable for the pur- Y pose of properly adapting'the belts to thecircumference ofthe cylinder B, thereby enabling 6o me to perfectly control and guide the said belts and cause them to run straight, which cannot be done where a single broad apron is employed, as described in my Letters Paten-t above referred to.

F designates a revolving agitating-wheel, which is arranged inside of the screening-cylinder B, eccentric to the longitudinal axis thereof. `The blades b of this'wheel F are set obliquely to its axis, or are given a spiral twist, 7o

as shown in Fig. 3, so that they operate as conveyers to move the grain through the cylinder, as well as to beat back the grain over the internal surface of this cylinder Bthus causing the cockle to settle in the perforations therein. It will thus be observed that I construct the screening-cylinder B with imperforated, portions or blanks (about two to three inches wide, more or less) extending around the cylinder, and lettered c; also a portion, c, 8o imperforated at each end of the cylinder. The object of these imperforated `portions c is for the endless belts C to lap on, and they should be wide enough to allow a little sidewise movement of said belts without leaking grain or S5 seeds.

G designates a stationary brush, which is adjustably secured to the cheek-plates A of the frame A by means of set-screws ax, and arranged so that it can be made to bear against 9o the inner side of the cylinder B with more or less pressure. as may be required. The object of the brush G is to brush out any wheat which may be lodged in the perforations of the cylinder B, and also to push the cockle through 9 5 the perforations after the cockle passes above and beyond the shaft D.

A pulley, d, is keyed on one end of the shaft ofthe agitating-wheel F, to receive motion from adriving-powerbymeansof a belt. (Notshown Ioo in the drawings.) A pulley and belt applied to I 3. In a cockle-separator, the combination ot' the opposite end of the' said Wheel-shaft give motion to the shaft D on top of the main frame A. This shaft D gives motion to the belts which partly encircle the screening-cylnder B, and thus the latter is revolved.

In the operation of the machine the cockle lodges in the perforations of the cylinder B, and for a timeis prevented from falling through these perforations by the belts C. It is carried up by the revolution of' the cylinder until the belts leave the latter to pass over the shaft D, when the cockle drops through the cylinder onto the belts and is carried over the shaft D and discharged. The Wheat is fed into the screenin g-cylinder through a hopper, J, and discharged from the opposite end of the cylinder.

rlhe belts or aprons C are preferably arranged between arc-shaped guide-plates, which are secured to the main frame ot' the machine.

Having described my in vention, what I claim as new, and desire to secure by Letters Patent, 1S-

1. In a cockle-separating machine, the screening cylinder constructed with imperforated bands or rings, in combination with supporting and driving belts, substantiallyin the manner and for the purposes described.

2. .In a cockle-separating machine, the combination of a rotary screening-cylinder having imperforated annular portions between the perforated portions, in combination With-endless belts, which lap over said imperforated portions and embrace about two-thirds the oircumference of said cylinder, substantially as and for the purposes described.

the rotary screening-cylinder, supporting and driving belts, and the endWise-adjustable pulleys therefor, adapted to operate substantially in the manner and for the purposes described.

4. The combination of the rotary screeningcylinder, supporting and driving belts therefor, and adjustable hangers for regulating the tension of the said belts, substantially in the manner and for the purposes described.

5. The combination of the screening-cylinder,

the supporting and driving belts therefor, a.

device for regulating the tension of the belts, and pulleys which are adjustable endwise, all adapted to operate substantially in the manner and for the purposes described.

6. In a cockle-screen, the combination of the screening-cylinder, the supporting and driving belts therefor, and an adjustable brush arranged inside of said cylinder, substantially in the manner and for the purposes described.

7. In combination with the screening-cylinner, supporting and driving belts therefor, an agitatin g-wheel arranged eccentrically therein, andhaving blades which are set obliquely to the axis of this wheel, adapted to operate substantially in the manner and for the purposes described.

In testimony that I claim the foregoing as my own I affix my signature in presence of two Witnesses.

JOHN B. GORNWALL.

Witnesses:

W. H. HILLHoUsE, J. SILAs LEAs.