US305299A - Coal-sgreen - Google Patents
Coal-sgreen Download PDFInfo
- Publication number
- US305299A US305299A US305299DA US305299A US 305299 A US305299 A US 305299A US 305299D A US305299D A US 305299DA US 305299 A US305299 A US 305299A
- Authority
- US
- United States
- Prior art keywords
- bars
- coal
- frame
- screen
- sgreen
- 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 Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 206010022114 Injury Diseases 0.000 description 2
- 240000004658 Medicago sativa Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910000754 Wrought iron Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 230000000717 retained Effects 0.000 description 2
- 239000010959 steel 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
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
- B07B1/4672—Woven meshes
Definitions
- AIIIIIIIIIIIIII [grim g a gINVENTOR.
- GEORGE A EDWARDS, OF WILKES-BARRE, PENNSYLVANIA.
- This invention relates to that class of coalscreens which are used in and about mines for the purpose of screening and separating the coal into proper grades or sizes.
- it has been customary to employ either wire screens or screens constructed of cast metal, both of which have been found defective, the former for the reason that in case one of the wires should become broken or loosened from the frame it would soon become entirely detached and render the screen worthless,or entailing expense for its repairs.
- cast-iron screens have been liable to break, and thus be rendered absolutely worthless.
- A represents a rectangular frame, constructed ofstrips or bars of wrought-iron or steel of the proper dimensions.
- the side bars, B B are straight, and the end bars, 0 C, are curved or arched, so as to produce aframe in the shape of a cylindersegment.
- the inner edges of the end bars, 0, are provided with flanges D, extending in an upward direction.
- E E are thetransverse bars,of which any desired number may be used, and which 0011- nect the side .bars of the frame, they being placed any-suitable distance apart.
- transverse bars consist of fiat iron strips, the ends of which are twisted, as shown at G,they being given a one-quarter turn, so as to enable them to be riveted or otherwise attached to the side bars of the frame, in relation to which they occupy a vertical position, as will be clearly seen in Figs. 2 and 3 of the drawings.
- the transverse bars E are perforated to receive thelongitudinal bars H, which are made, preferably, of round iron, and one or both ends of which may be suitably attached to the flanges D of the end bars, 0, of the frame.
- the combination with a frame constructed of fiat metal strips, and the ends of which are curved or arched and provided with upturned flanges at their inner edges, of the transverse fiat vertical bars having suitable perforations, and round longitudinal bars extending through the said perforations, and retained by the flanges of the end bars of the frame, substantially as and for the purpose set forth.
Landscapes
- Combined Means For Separation Of Solids (AREA)
Description
' r I v 2;, gfia (No Model.)
G. A. EDWARDS.-
oAL SCREEN.
No. 305,299. Patented Sept. 16, 188 4.
AIIIIIIIIIIIIII [grim g a gINVENTOR.
em, MAJ
M ATTORNEYS.
UNITED STATES PATENT ()FFICE.
GEORGE A. EDWARDS, OF WILKES-BARRE, PENNSYLVANIA.
COAL-SCREEN.
SPECIFICATION forming part of Letters Patent No. 305,299, dated September 16, 1884.
Application filed May 16. 1884.
To all whom it may concern:
Be itknown that I, GEORGE A. EDWARDS, a citizen of the United States, and a resident of WVilkesBarrdin the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Goal-Screens; and I do hereby declare that the following isa full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompany ing drawings,which form a part of this specification, and in which- I Figure 1 is a perspective view of my improved coal-screen. Fig. 2 is a transverse sectional view of the same. Fig. 3 is a longitudinal sectional view, and Fig. 4 is a detail view of one of the transverse bars detached from the screen.
The same letters refer to the same parts in all the figures.
This invention relates to that class of coalscreens which are used in and about mines for the purpose of screening and separating the coal into proper grades or sizes. For this purpose it has been customary to employ either wire screens or screens constructed of cast metal, both of which have been found defective, the former for the reason that in case one of the wires should become broken or loosened from the frame it would soon become entirely detached and render the screen worthless,or entailing expense for its repairs. On the other hand, cast-iron screens have been liable to break, and thus be rendered absolutely worthless. In the drawings hereto annexed, A represents a rectangular frame, constructed ofstrips or bars of wrought-iron or steel of the proper dimensions. The side bars, B B, are straight, and the end bars, 0 C, are curved or arched, so as to produce aframe in the shape of a cylindersegment. The inner edges of the end bars, 0, are provided with flanges D, extending in an upward direction.
E E are thetransverse bars,of which any desired number may be used, and which 0011- nect the side .bars of the frame, they being placed any-suitable distance apart. These (No model.)
transverse bars consist of fiat iron strips, the ends of which are twisted, as shown at G,they being given a one-quarter turn, so as to enable them to be riveted or otherwise attached to the side bars of the frame, in relation to which they occupy a vertical position, as will be clearly seen in Figs. 2 and 3 of the drawings. The transverse bars E are perforated to receive thelongitudinal bars H, which are made, preferably, of round iron, and one or both ends of which may be suitably attached to the flanges D of the end bars, 0, of the frame.
Fronrthe foregoing description, taken in connection with the drawings hereto annexed,
the operation and advantages of my invention will be readily understood. The construction is simple and exceedingly durable, and in case of injury to any part of the screen such i11- jury may be easily repaired.
Having thus described my invention,I claim and desire to secure by Letters Patent of the United States- V 1. As an-improvement in coal-screens, the combination of aframe constructed of flat iron bars, the end bars of which have upturned flanges, with the flat vertical transverse bars, having quarter-twisted ends, whereby they are attached to the sidebars of the frame, and 1011- gitudinal bars extending through perforations in the transverse bars, substantially as herein set forth.
2. In a coal-screen, the combination, with a frame constructed of fiat metal strips, and the ends of which are curved or arched and provided with upturned flanges at their inner edges, of the transverse fiat vertical bars having suitable perforations, and round longitudinal bars extending through the said perforations, and retained by the flanges of the end bars of the frame, substantially as and for the purpose set forth.
In testimony that I claim. the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.
GEORGE A. EDVARDS.
Witnesses:
Louis Bacenn, ARTHUR L. MoRsELL.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US305299A true US305299A (en) | 1884-09-16 |
Family
ID=2374470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US305299D Expired - Lifetime US305299A (en) | Coal-sgreen |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US305299A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2737925A (en) * | 1953-02-13 | 1956-03-13 | Pearson Otto | Reciprocating grill type barn cleaner |
| US2748942A (en) * | 1950-04-20 | 1956-06-05 | Sam C Aker | Vibratory screening apparatus |
| US20040094494A1 (en) * | 2002-10-24 | 2004-05-20 | Lynk, Inc. | Over door storage rack for cabinet doors |
| US8196753B2 (en) * | 2010-11-12 | 2012-06-12 | Polydeck Screen Corporation | Screening panel |
-
0
- US US305299D patent/US305299A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2748942A (en) * | 1950-04-20 | 1956-06-05 | Sam C Aker | Vibratory screening apparatus |
| US2737925A (en) * | 1953-02-13 | 1956-03-13 | Pearson Otto | Reciprocating grill type barn cleaner |
| US20040094494A1 (en) * | 2002-10-24 | 2004-05-20 | Lynk, Inc. | Over door storage rack for cabinet doors |
| US8196753B2 (en) * | 2010-11-12 | 2012-06-12 | Polydeck Screen Corporation | Screening panel |
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