US211694A - Improvement in revolving screens - Google Patents
Improvement in revolving screens Download PDFInfo
- Publication number
- US211694A US211694A US211694DA US211694A US 211694 A US211694 A US 211694A US 211694D A US211694D A US 211694DA US 211694 A US211694 A US 211694A
- Authority
- US
- United States
- Prior art keywords
- screen
- improvement
- revolving
- iron
- screens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 229910052742 iron Inorganic materials 0.000 description 16
- 239000000463 material Substances 0.000 description 12
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 229910000746 Structural steel Inorganic materials 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 240000004658 Medicago sativa Species 0.000 description 2
- 229920002873 Polyethylenimine Polymers 0.000 description 2
- 229940102098 Revolution Drugs 0.000 description 2
- 201000002372 amelogenesis imperfecta type 1G Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000002093 peripheral Effects 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 229920001601 polyetherimide Polymers 0.000 description 2
- 229910052904 quartz Inorganic materials 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
- B07B1/24—Revolving drums with fixed or moving interior agitators
Definitions
- My invention relates to that class of revolving sieves, screens, or bolts in which the inner or concave surface is provided with a series of longitudinal pockets that receive the material to be screened, raise it with the revolu tion of the reel, and drop it from such a height that it will fall upon the screen-surface below with a considerable force, thereby keeping the meshes clearer, and also more eifeetually screening the material; and the invention consists in constructing said pockets from plates of screen material and plates of Z-shaped angle-iron, alternating with each other, as here-- inafter described, whereby the construction is rendered simple, convenient, and inexpensive, and the screens or bolts are rendered strong and durable, and can readily be taken apart for repairs or other purpose.
- A represents a screen revolving on or with a shaft, B, having bearings in a frame, 0, the screen being inclined to feed the coal, sand, grain, or other material forward from the end adjacent to the hopper or chute H.
- the periphery of the screen is composed of alternate sections, S, of wire-cloth, perforated plate, or other suitable metal or material adapted to the naturc'of the substance to be screened, and connecting-plates It, of sheet or plate metal, struck up or formed into doubleflanged an gle-iron, with the flanges extending in opposite directions, or, in other words, 2- shaped angle-iron, as shown in the cross-sections, Figs. 2 and 3.
- These Z-iron plates are each arranged so that the body of the plate is nearly or quite coincident with a radial line extending from the axis of rotation, and each screen-section is either fastened at both ends to the outer or the inner flange of the Z-iron, as shown in Fig.
- flanges are in each case bent to the particular angle required for the rectangular or triangular pockets, said angle depending on the size of the screen and size and number of screen-sections and Z-irons.
- Any suitable metal may be substituted for iron.
- This screen is particularly adapted by its shape, strength, and durability to the separation of pure coal from culm; and it can also be used for screening sand, plaster, quartz, grains, and other similar substances, and, if provided with screen-sections clothed with bolting-cloth, may be employed in flour-mills with satisfactory results.
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Combined Means For Separation Of Solids (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Description
J. 0. BOWMAN Revolving Screen.
No.' 2ll,694. Patented Jan. '28 1879.
N-PEI'ERS, PHOTD-LITHOGRAFHER, WASHiNGTON. D C
UNITED STATES PATENT OFFICE.
JACOB O. BOWMAN, OF PROVIDENCE, ASSIGNOR OF ONE-HALF HIS RIGHT TO JOHN F. SHUYDER, OF SORANTON, PENNSYLVANIA.
IMPROVEMENT IN REVOLVING SCREENS.
Specification forming part of Letters Patent No. 211,694., dated anuary 28, 1879; application filed August 18, 1877.
To aZZ whom it may concern Be it known that I, JACOB O. BOWMAN, of
Providence, in the county of Luzerne and State of Pennsylvania, have invented a certain new and useful Improvement in Revolving Screens; and I do hereby declare the following to be a full and exact description of the same, reference being had to the accompanying drawing, forming part of this specification, in which- Figure 1 represents a side elevation of my improved screen; Fig. 2, an end elevation of the same, partly in section; and Fig. 3, a detail view of a modification.
Similar letters of reference in the accompanyin g drawing indicate the same parts.
My invention relates to that class of revolving sieves, screens, or bolts in which the inner or concave surface is provided with a series of longitudinal pockets that receive the material to be screened, raise it with the revolu tion of the reel, and drop it from such a height that it will fall upon the screen-surface below with a considerable force, thereby keeping the meshes clearer, and also more eifeetually screening the material; and the invention consists in constructing said pockets from plates of screen material and plates of Z-shaped angle-iron, alternating with each other, as here-- inafter described, whereby the construction is rendered simple, convenient, and inexpensive, and the screens or bolts are rendered strong and durable, and can readily be taken apart for repairs or other purpose.
In the drawings, A represents a screen revolving on or with a shaft, B, having bearings in a frame, 0, the screen being inclined to feed the coal, sand, grain, or other material forward from the end adjacent to the hopper or chute H.
The periphery of the screen is composed of alternate sections, S, of wire-cloth, perforated plate, or other suitable metal or material adapted to the naturc'of the substance to be screened, and connecting-plates It, of sheet or plate metal, struck up or formed into doubleflanged an gle-iron, with the flanges extending in opposite directions, or, in other words, 2- shaped angle-iron, as shown in the cross-sections, Figs. 2 and 3. These Z-iron plates are each arranged so that the body of the plate is nearly or quite coincident with a radial line extending from the axis of rotation, and each screen-section is either fastened at both ends to the outer or the inner flange of the Z-iron, as shown in Fig. 3, or else at one end to the outer flange and at the other end to the inner flange of said Z-iron, as shown in Fig. the former mode producing nearly rectangular, and the latter triangular, pockets, as clearly shown in said figures. The flanges are in each case bent to the particular angle required for the rectangular or triangular pockets, said angle depending on the size of the screen and size and number of screen-sections and Z-irons.
Any suitable metal may be substituted for iron.
By using the Z-iron plates in building up the structure of the reel or screen, I attain not only a great economy of material and labor, but I produce a structure of great strength and durability, and of neater appearance than any pocket-screen heretofore in public use.
This screen is particularly adapted by its shape, strength, and durability to the separation of pure coal from culm; and it can also be used for screening sand, plaster, quartz, grains, and other similar substances, and, if provided with screen-sections clothed with bolting-cloth, may be employed in flour-mills with satisfactory results.
Having thus described my invention, I claim as new-- A revolving screen having peripheral pockets or internal recesses constructed by the combination of alternate screen-sections and Z-iron plates, the screen-sections being secured at their edges to the'flanges of the iron plates, substantially as described.
JACOB U. BOWMAN. Witnesses:
JOHN B. GILLEsPIn, HAROLD LEACH.
Publications (1)
Publication Number | Publication Date |
---|---|
US211694A true US211694A (en) | 1879-01-28 |
Family
ID=2281101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US211694D Expired - Lifetime US211694A (en) | Improvement in revolving screens |
Country Status (1)
Country | Link |
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US (1) | US211694A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6669028B2 (en) * | 2001-07-05 | 2003-12-30 | Aikawa Iron Works Co., Ltd. | Cylindrical screen |
-
0
- US US211694D patent/US211694A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6669028B2 (en) * | 2001-07-05 | 2003-12-30 | Aikawa Iron Works Co., Ltd. | Cylindrical screen |
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