GB642375A - Improvements in or relating to electrical control equipment - Google Patents
Improvements in or relating to electrical control equipmentInfo
- Publication number
- GB642375A GB642375A GB3615746A GB3615746A GB642375A GB 642375 A GB642375 A GB 642375A GB 3615746 A GB3615746 A GB 3615746A GB 3615746 A GB3615746 A GB 3615746A GB 642375 A GB642375 A GB 642375A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- motor
- automatic control
- relating
- marginal
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B1/00—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values
- G05B1/01—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric
- G05B1/04—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric with sensing of the position of the pointer of a measuring instrument
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Relay Circuits (AREA)
Abstract
642,375. Automatic control systems. STANDARD TELEPHONES & CABLES, Ltd. Dec. 6, 1946, No. 36157. [Class 38 (iv)] [Also in Group XXXVII] In an automatic control system, a marginal relay has two sets of controls, on each side of the movable contact member; for normal deviation of the member one set closes and for larger deviations - both close. The marginal relay, Fig. 1, energizes either relay LV or HV according to the normal deviation of member 1 and connects the armature, ARM, of the correcting motor, Fig. 2, to the supply. With large deviations, the relay HS is also energized and the resistor, 4, is placed in series with the field 3 of the motor which accelerates. In a modification, not shown, the motor operates the final correcting device through a magnetic clutch, the energization of which is effected by relays LV, HV. The marginal relay may take the form of a mercury switch and devices may be operated.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3615746A GB642375A (en) | 1946-12-06 | 1946-12-06 | Improvements in or relating to electrical control equipment |
| ES0181018A ES181018A1 (en) | 1946-12-06 | 1947-12-19 | IMPROVEMENTS IN OR RELATED TO ELECTRICAL CONTROL EQUIPMENT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3615746A GB642375A (en) | 1946-12-06 | 1946-12-06 | Improvements in or relating to electrical control equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB642375A true GB642375A (en) | 1950-08-30 |
Family
ID=10385499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3615746A Expired GB642375A (en) | 1946-12-06 | 1946-12-06 | Improvements in or relating to electrical control equipment |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES181018A1 (en) |
| GB (1) | GB642375A (en) |
-
1946
- 1946-12-06 GB GB3615746A patent/GB642375A/en not_active Expired
-
1947
- 1947-12-19 ES ES0181018A patent/ES181018A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES181018A1 (en) | 1948-02-01 |
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