US188748A - Improvement in coal-screens - Google Patents
Improvement in coal-screens Download PDFInfo
- Publication number
- US188748A US188748A US188748DA US188748A US 188748 A US188748 A US 188748A US 188748D A US188748D A US 188748DA US 188748 A US188748 A US 188748A
- Authority
- US
- United States
- Prior art keywords
- coal
- screen
- screens
- improvement
- car
- 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
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 24
- 239000003245 coal Substances 0.000 description 24
- 239000002699 waste material Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 241001293113 Anas clypeata Species 0.000 description 2
- 206010061619 Deformity Diseases 0.000 description 2
- 241000681094 Zingel asper Species 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 229910052570 clay Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010454 slate Substances 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
- B07B1/005—Transportable screening plants
Definitions
- the object of my invention is to supply to coal miners and mine proprietors or operators a portable coal-screen that can be operated in the mine for the loading of the mine-cars with clean coal instead of the good coal mixed with waste, which is sent out of the mine now, without an exception that I am aware of, so common is the practice.
- Coal as it is taken down from its Wall by the miner, is, from necessity, very dirty.
- the miner in holing or working under the coal to undermine it and get it down, cuts a large amount of coal into dust or slack, and more or less of the fire-clay and slate of the floor and roof become intermixed with the slack.
- an adjustable screen is provided, upon which all the coal and .waste combined may be shoveled.
- the coarse clean coal will shoot into the car, while the slack will drop on the side of the track.
- My screen is very light, and each miner easily sets his screen on the cars side opposite to the shoveling.
- A, Fig. l, is the square screen-frame.
- a is a movable side-board fastened to the side by staples: It is to be placed opposite to tne shoveler when the coal is cast from front or rear.
- D is a pair of hinged legs, to regulate the pitch of the screen to suit either wet or dry coal; 1) b, a swinging bar that may be held in any of the adjusting-notches d d, to maintain the screen at a desirable angle, with its handle bearing against the car.
- 0 is an apron of sh'eetiron that hangs beneath the lower end of the screen, to deflect the waste as far as possible from the side of the car and the track.
- E is the screen, having the bars set apart according to the rules that prevail relating thereto; 6, a stiEening-bar under the screen; F F, hooks by which the screen is hung to the car or wagon;f, hinge for the beams D to vibrate on; G, car or wagon to be loaded.
- My screen is usually 2% to 3 square, the iron bars being one-half-inch iron.
- I claim as my invention A portable coal-screen, attachable to a coalcar by suspension-hooks and held in any desired sloping position by supporting bars notched for reception of hinged adjustmentrod, in combination with a coal-car, for the purpose and in the manner as herein described.
Description
E. D.- McLEAN.
COAL-SCREEN.
No.188,74,-8, Patented March 27,1877.
6 H ar/a ya? ewe s4 n mags. wnoro-gmocmmen, wisumsn'm. u c,
UNITED. STATES PATENT OFFICE.
EDWIN D. MGLEAN, OF NEW ATHENS. ILLINOIS.
IMPROVEMENT IN COAL-SCREENS.
Specification forming part of Letters Patent No. 188,748, dated March 27, 1877; application filed August 30, 1876.
To all whom it may concern Be it known that I, EDWIN DEWHURST MCLEAN, of New Athens, in the county of St. (llair and State of Illinois, have invented a new and useful I m provementin Coal-Screens, which improvement is fully set forth in the following specification, reference being had to the accompanying drawings.
The object of my invention is to supply to coal miners and mine proprietors or operators a portable coal-screen that can be operated in the mine for the loading of the mine-cars with clean coal instead of the good coal mixed with waste, which is sent out of the mine now, without an exception that I am aware of, so common is the practice.
Coal, as it is taken down from its Wall by the miner, is, from necessity, very dirty. The miner, in holing or working under the coal to undermine it and get it down, cuts a large amount of coal into dust or slack, and more or less of the fire-clay and slate of the floor and roof become intermixed with the slack.
The economical value of my invention is strikingly shown at this stage of operation in all mines. Twenty per cent. of the coal raised to the surface will pass through a one and a quarter inch or usage screen as waste, which, as valueless Waste, has to be hauled away from the mines mouth at a great expense, or be there burned, which process scarcely reduces the bulk materially, there being so much earthy matter that the heaps are an expensive disfigurement of a mines surroundings.
By the attachment to a mine-car of the device illustrated in Fig. 1, an adjustable screen is provided, upon which all the coal and .waste combined may be shoveled. The coarse clean coal will shoot into the car, while the slack will drop on the side of the track. Nothing,
therefore, need be raised to the surface but clean profitable coal. My screen is very light, and each miner easily sets his screen on the cars side opposite to the shoveling.
A, Fig. l, is the square screen-frame. a is a movable side-board fastened to the side by staples: It is to be placed opposite to tne shoveler when the coal is cast from front or rear. D is a pair of hinged legs, to regulate the pitch of the screen to suit either wet or dry coal; 1) b, a swinging bar that may be held in any of the adjusting-notches d d, to maintain the screen at a desirable angle, with its handle bearing against the car. 0 is an apron of sh'eetiron that hangs beneath the lower end of the screen, to deflect the waste as far as possible from the side of the car and the track. E is the screen, having the bars set apart according to the rules that prevail relating thereto; 6, a stiEening-bar under the screen; F F, hooks by which the screen is hung to the car or wagon;f, hinge for the beams D to vibrate on; G, car or wagon to be loaded. My screen is usually 2% to 3 square, the iron bars being one-half-inch iron.
I do not claim the invention of a screen as such.
I claim as my invention A portable coal-screen, attachable to a coalcar by suspension-hooks and held in any desired sloping position by supporting bars notched for reception of hinged adjustmentrod, in combination with a coal-car, for the purpose and in the manner as herein described.
ED WIN DE WHURST MGLEAN.
Witnesses:
ALEX. J. THOMSON, F. E. BURNS, WILLIAM GOLIG-HTLY.
Publications (1)
Publication Number | Publication Date |
---|---|
US188748A true US188748A (en) | 1877-03-27 |
Family
ID=2258155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US188748D Expired - Lifetime US188748A (en) | Improvement in coal-screens |
Country Status (1)
Country | Link |
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US (1) | US188748A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2716488A (en) * | 1951-11-07 | 1955-08-30 | Bernt J Fagerberg | Cob corn screen |
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0
- US US188748D patent/US188748A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2716488A (en) * | 1951-11-07 | 1955-08-30 | Bernt J Fagerberg | Cob corn screen |
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