US1935745A

US1935745A - Screen for cotton cleaners

Info

Publication number: US1935745A
Application number: US555601A
Authority: US
Inventors: Alexander S Mackenzie
Original assignee: ELK Manufacturing Co
Current assignee: ELK Manufacturing Co
Priority date: 1931-08-06
Filing date: 1931-08-06
Publication date: 1933-11-21
Anticipated expiration: 1950-11-21

Description

Nov. 21, 1933. A. s. MACKENZIE SCREEN FOR COTTON CLEANERS Filed Aug. 6, 1931 gwuentoc AkxamerJA/aafezzzzb Patented Nov. 21, 1933 I SCREEN FOR COTTON CLEANERS Alexander S. Mackenzie, Houston, Tex., assignor to Elk Manufacturing Company, Elk City, Okla., a corporation of Oklahoma Application August 6, 1931. Serial No. 555,601

4 Claims. (CI. 19-95) The present invention relates to improvements in screens particularly designed for separating dust, dirt, motes and other extraneous matter from cotton lint and consists in the particular construction of screen that will be hereinafter more particularly described in connection with the accompanying drawing, in which:

Figure 1 is a plan of a section of a screen embodying the invention.

Figure 2 is a section substantially on the line.

22 of Figure 1.

Figure 3 is a section on the line 3-3 of Figure 1, illustrating more or less diagrammatically the action of the screen when in use.

Referring to the drawing, in the several figures of which like parts are designated by the same reference character, the screen comprises a body sheet or plate preferably made of metal and which may be of any suitable dimensions, being surrounded by a frame not shown.

Preferably the body sheet or plate will be of metal and as shown is transversely corrugated, each of the corrugations providing a supporting surface 1, which is inclined upwardly in the direction of movement of material to be treatedthereover, such corrugations extending transversely of the direction of movement of the material to be treated.

In each of the inclined surfaces 1 is formed a plurality of perforations 2, preferably made in the form of slots elongated in the direction of the length ofithe corrugations and located at the upper edge of each inclined section 1. As shown, particularly in Figure 1, the apertures or perforations 2 are relatively long and those in each corrugation are arranged out of alignment with those in the adjacent corrugation, the several perforations being spaced or separated by relatively narrow weblike portions 4 of the screen plate.

As shown, particularly in Figure 3, the corrugations are so formed that substantially vertically extending sections 5, 6 are provided at the edges of each inclined portion 1 and from said figure,

it will be seen that as the cotton fiber and other 7 material is moved over the plate, the sections 5 at the upper ends of the perforations or slots 2 will constitute abutments against which the material will bear and by which undesirable foreign material will be detached from the body of fiber and permitted to fall through the perforations as represented in Figure 3.

The material to be treated is moved over the upper surface of the screen, by suitable means, such for example as a drum or cylinder having peripheral projections and bythe particular arrangement shown and described undesirable foreign material such as particles of dust, dirt, motes, etc., will be effectively separated from the fiber.

It will be seen that the construction is a very simple and inexpensive one and by the particular arrangement of the apertures 2 and their relation to the inclined supporting surfaces 1, the screen is provided with a relatively large number of sub-stantially vertical surfaces or abutments against which the cotton will be caused to rub in passing over the screen, thus effectively loosen ing and shaking out theparticles of foreign matter.

1 Having thus described the invention, what is claimed is:

1. A screen for cotton cleaners comprising a metal sheet which is provided with corrugations, the length of each of which is transverse to the direction of movement over the screen of cotton to-be cleaned and each corrugation providing a supporting surface that is inclined upward in the direction of movement of the cotton, a plurality of apertures being formed in each said inclined surface at the upper edge thereof so that the rear wall of each said aperture extends substantially vertically, for the purpose described.

2. A screen for cotton cleaners comprising a metal sheet provided with corrugations, the length of each of which is transverse to the direction of movement over the screen of cotton to be cleaned and each corrugation providing a supporting surface which is inclined upwardly in the direction of movement of the cotton, a plurality of apertures transversely elongated being formed in eachsaid inclined surface, the apertures extending longitudinally with respect to the length of the screen from a point adjacent the lower portionof the inclined surface to the upper edge of the inclined surface, so that the rear wall of each of the apertures extends substantially vertical.

' 3. A screen for cotton cleaners comprising a stationary corrugated sheet, each corrugation providing a supporting surface which is inclined upwardly in the direction in which the cotton to be cleaned is moved thereon, said supporting surface being provided with a row of apertures adjacent the upper edge thereof so that the rear wall of each of the apertures extends substantially vertically.

4. A screen for cotton cleaners comprising a stationary corrugated sheet, each corrugation comprising a vertical wall and an inclined wall extending upwardly to the upper edge of the vertical wall in the direction in which cotton to be cleaned is moved on the sheet, said upwardly inclined wall having a row of apertures therein adjacent the vertical wall so that the rear wall of each of the apertures extends substantially vertically.

ALEXANDER S. MACKENZIE.