GB302725A - Improvements in or relating to the separation of materials of different physical qualities especially of raw mining products - Google Patents
Improvements in or relating to the separation of materials of different physical qualities especially of raw mining productsInfo
- Publication number
- GB302725A GB302725A GB36840/28A GB3684028A GB302725A GB 302725 A GB302725 A GB 302725A GB 36840/28 A GB36840/28 A GB 36840/28A GB 3684028 A GB3684028 A GB 3684028A GB 302725 A GB302725 A GB 302725A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- valve
- anode
- materials
- current
- 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
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/344—Sorting according to other particular properties according to electric or electromagnetic properties
Landscapes
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
302,725. Krupp Grusonwerk Akt.-Ges., F. Dec. 21, 1927, [Convention date]. Thermionic relays.-In a process for separatng materials, particularly raw mining products, the entrance of the material into the field of an induction coil or condenser or both in one of two oscillating circuits, tuned to the same frequency and each acting on an amplifying valve, causes a phase displacement between the anode currents in the oscillating circuits, the current or voltage generated being utilized, either directly or after amplification, to control a separating apparatus. The material is passed through the field of a coil 11 or condenser 12 or both in the circuit 2 which is tuned to the same frequency as the circuit 1 each being connected to a hotcathode valve 3 acting as a high-frequency generator and each anode circuit being provided with resistances 6, 7 respectively. The current produced in the conductor 10 is transmitted through an oscillating circuit 13 and valve 14 to a transformer, the secondary circuit of which contains a glow discharge tube 16, the current through the latter being utilized to control a separating apparatus. In place of the resistances 6, 7 the primary windings of two transformers, the secondary windings of which are in opposition, may be used. With the phase displacement between the two primary currents a resulting E.M.F. is created in the secondary circuit which is transmitted to an amplifier valve in the anode circuit of which is connected the primary winding of the transformer. Specification 284,307, [Class 72 Iron &c.], is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE302725X | 1927-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB302725A true GB302725A (en) | 1929-10-24 |
Family
ID=6107517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36840/28A Expired GB302725A (en) | 1927-12-21 | 1928-12-13 | Improvements in or relating to the separation of materials of different physical qualities especially of raw mining products |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB302725A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2504731A (en) * | 1946-03-23 | 1950-04-18 | Int Nickel Co | Electronic ore sorting |
US2902645A (en) * | 1955-01-24 | 1959-09-01 | Steatit Magnesia Ag | Automatic measuring device for inductors |
GB2146128A (en) * | 1983-08-30 | 1985-04-11 | Goring Kerr Plc | Metal detection apparatus |
-
1928
- 1928-12-13 GB GB36840/28A patent/GB302725A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2504731A (en) * | 1946-03-23 | 1950-04-18 | Int Nickel Co | Electronic ore sorting |
US2902645A (en) * | 1955-01-24 | 1959-09-01 | Steatit Magnesia Ag | Automatic measuring device for inductors |
GB2146128A (en) * | 1983-08-30 | 1985-04-11 | Goring Kerr Plc | Metal detection apparatus |
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