GB847301A - An improved shingle screening appliance - Google Patents
An improved shingle screening applianceInfo
- Publication number
- GB847301A GB847301A GB918158A GB918158A GB847301A GB 847301 A GB847301 A GB 847301A GB 918158 A GB918158 A GB 918158A GB 918158 A GB918158 A GB 918158A GB 847301 A GB847301 A GB 847301A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame
- units
- shingle
- supported
- 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
Links
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
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
- B07B1/286—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens with excentric shafts
Abstract
847,301. Sifting apparatus. McCAW, K. G. March 21, 1958, No. 9181/58. Class 117 Upper and lower oscillatory units 2 and 6 for screening shingle are pivotally supported within a stationary frame 1 by rocker arms 10 pivoted at 12 to the frame and to the units by cranks 13. The frame is supported on uprights, not shown, and the drive is provided by an electric motor 14 driving a shaft 16 supported on the frame and carrying an eccentric from which connection is made to a shaft 18 attached to the upper unit. Each unit comprises an upper screen of relatively coarse mesh and a lower screen of smaller mesh, and the screens are spaced and supported by longitudinal and cross members. Buffer springs may be compressed during downward movement of the units. Shingle is fed from a hopper 20 to one end of the upper unit, and some of it may pass through the screens to be collected below, and the remainder is driven over the ends of various ones of the screens where separate collections are made. Water may be used to assist the flow of shingle. In a modification the units are pivoted to the frame in the manner shown in Fig. 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB918158A GB847301A (en) | 1958-03-21 | 1958-03-21 | An improved shingle screening appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB918158A GB847301A (en) | 1958-03-21 | 1958-03-21 | An improved shingle screening appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB847301A true GB847301A (en) | 1960-09-07 |
Family
ID=9866962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB918158A Expired GB847301A (en) | 1958-03-21 | 1958-03-21 | An improved shingle screening appliance |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB847301A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4795552A (en) * | 1987-04-24 | 1989-01-03 | Telsmith, Inc. | Natural frequency vibrating screen |
-
1958
- 1958-03-21 GB GB918158A patent/GB847301A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4795552A (en) * | 1987-04-24 | 1989-01-03 | Telsmith, Inc. | Natural frequency vibrating screen |
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