US160405A - Improvement in adjustable electro-magnets for relays - Google Patents
Improvement in adjustable electro-magnets for relays Download PDFInfo
- Publication number
- US160405A US160405A US160405DA US160405A US 160405 A US160405 A US 160405A US 160405D A US160405D A US 160405DA US 160405 A US160405 A US 160405A
- Authority
- US
- United States
- Prior art keywords
- magnet
- electro
- shunt
- relays
- magnets
- 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
- 206010022114 Injury Diseases 0.000 description 2
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
- H03K17/64—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors having inductive loads
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay
Definitions
- My invention is made with reference to obtainin g a uniformity of current in the electromagnet, and avoiding the adjustment of the magnet or the parts thereof.
- I make use of a shunt or branch circuit connected at both sides of the electro-magnet, and in that shunt I place a regulator composed of several helices or resistance-coils connected to each other and to circuit-pins, and employ an arm that can be revolved upon a center and bring into the shunt greater or less resistance, and thereby directing the proper proportion of the current through the eleetro-magnet and allowing the remainder to pass through the shunt.
- Figure 1 is a side view of the electro-magnet
- Fig. 2 is a plan of the shunt-regulator.
- the electro-magnet a is of ordinary character, and employed as a sounder or otherwise.
- the shunt-regulator contains the resistancecoils b I), connected to each other through the circuit-pins c e in the center of which is the pivot d of the arm a.
- the line f is connected through the magnet a and by the shunt-wires g with the pivot cl and first coil 1).
- the arm 0 is turned so as only to include one coil 1) in the shunt, the resistance will be but little, and most of the current will pass by the shunt and but little through the electromagnet to, and by turning this arm 6 any desired number of coils I) will be included in the shunt, so that, as the resistance increases, so the proportion of current directed through the magnet a will increase also.
- variable resistance I placed in a shuntcircuit, in combination with an electro-magnet for equalizing action of the current in the electro-magnet and dispensing with the springadjustment, as set forth.
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- Magnetic Treatment Devices (AREA)
Description
T. A. EDISON.
Adjustable Electra-Magnet for Relays, 8m.
N() ]6(),4()5, PatentedMarch2,I875.
THE GRAPHIG:C0.PHOTU:LITH.39 3.41 PARK PLACEJLY.
UNITED STATES PATENT OFFICE.
THOMAS A. EDISON, OF NEWARK, NEW JERSEY, ASSIGNOR TO HIMSELF AND GEORGE HARRINGTON, OF WASHINGTON, D. G.
IMPROVEMENT lN ADJUSTABLE ELECTRO-MAGNETS FOR RELAYS, &c.
Specification forming part of Letters Patent No. 160,405, dated March 2, 1875 application filed July 29, 1873.
To all whom it may concern Be it known that I, THOMAS A. EDISON, of of Newark, in the county of Essex and State of New Jersey, have invented an Improvevement in Adjusting Electro-Magnets, of which the following is a specification:
'With an electro-magnet employed for a sounder or receiving-instrument it is very difficult to adjust the action, because the intensity of the current varies greatly, and frequently false currents reach the magnet and prevent its proper action. To provide for these various circumstances, it is usual either to vary the tension of the retractile spring, or adjust the position of the armature and core in relation to each other.
My invention is made with reference to obtainin g a uniformity of current in the electromagnet, and avoiding the adjustment of the magnet or the parts thereof. I make use of a shunt or branch circuit connected at both sides of the electro-magnet, and in that shunt I place a regulator composed of several helices or resistance-coils connected to each other and to circuit-pins, and employ an arm that can be revolved upon a center and bring into the shunt greater or less resistance, and thereby directing the proper proportion of the current through the eleetro-magnet and allowing the remainder to pass through the shunt.
In the drawing, Figure 1 is a side view of the electro-magnet, and Fig. 2 is a plan of the shunt-regulator.
The electro-magnet a is of ordinary character, and employed as a sounder or otherwise.
The shunt-regulator contains the resistancecoils b I), connected to each other through the circuit-pins c e in the center of which is the pivot d of the arm a. The line f is connected through the magnet a and by the shunt-wires g with the pivot cl and first coil 1).
If the arm 0 is turned so as only to include one coil 1) in the shunt, the resistance will be but little, and most of the current will pass by the shunt and but little through the electromagnet to, and by turning this arm 6 any desired number of coils I) will be included in the shunt, so that, as the resistance increases, so the proportion of current directed through the magnet a will increase also.
1 do not claim a rheostat or adjustable resistance in a shunt-circuit, to regulate the current passing through a chemical receiving-instrument. I do not claim a shunt around an electro-magnet with a resistance that is not variable and serves to lessen the injury to the contact-points.
I claim as my invention- The variable resistance I), placed in a shuntcircuit, in combination with an electro-magnet for equalizing action of the current in the electro-magnet and dispensing with the springadjustment, as set forth.
Signed by me this 23d day of April, A. D. 1873.
THOS. A. EDISON.
Witnesses:
GEo. T. PINGKNEY, OnAs. H. SMITH.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US160405A true US160405A (en) | 1875-03-02 |
Family
ID=2229814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US160405D Expired - Lifetime US160405A (en) | Improvement in adjustable electro-magnets for relays |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US160405A (en) |
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0
- US US160405D patent/US160405A/en not_active Expired - Lifetime
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