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GB290767A - Improvements in and relating to variable electric resistances - Google Patents

Improvements in and relating to variable electric resistances

Info

Publication number
GB290767A
GB290767A GB617827A GB617827A GB290767A GB 290767 A GB290767 A GB 290767A GB 617827 A GB617827 A GB 617827A GB 617827 A GB617827 A GB 617827A GB 290767 A GB290767 A GB 290767A
Authority
GB
United Kingdom
Prior art keywords
pump
liquid
chambers
drysdale
controllers
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
Application number
GB617827A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Drysdale and Co Ltd
Original Assignee
Drysdale and Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Drysdale and Co Ltd filed Critical Drysdale and Co Ltd
Priority to GB617827A priority Critical patent/GB290767A/en
Priority to FR649967D priority patent/FR649967A/en
Publication of GB290767A publication Critical patent/GB290767A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/02—Liquid resistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

290,767. Drysdale & Co., Ltd., and Drysdale, J. W. W. March 5, 1927. Controllers, liquid ; controllers, actuating.-In a liquid rheostat of the kind in which the level of the electrolyte is regulated by means of a circulating pump and overflow weirs a regulating valve operated by the device to be controlled by the current in the rheostat is interposed in the circuit of the pump. The invention is described in connection with a motor-driven pump for a boiler feed. The electrodes a are enclosed in narrow chambers d in a tank b. Cooling liquid is circulated through the spaces h between the chambers d. A pump p draws electrolyte from a reservoir m beneath the tank b and passes it through a valve s contralled by the discharge of the feed-pump to the chambers d, whence it overflows over adjustable weirs r to the reservoir m. The electrodes are so shaped that the resistance is a function of the liquid level suitable to the characteristics of the motor and pump and the desired regulation.
GB617827A 1927-03-05 1927-03-05 Improvements in and relating to variable electric resistances Expired GB290767A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB617827A GB290767A (en) 1927-03-05 1927-03-05 Improvements in and relating to variable electric resistances
FR649967D FR649967A (en) 1927-03-05 1928-02-27 Improvements to variable electrical resistances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB617827A GB290767A (en) 1927-03-05 1927-03-05 Improvements in and relating to variable electric resistances

Publications (1)

Publication Number Publication Date
GB290767A true GB290767A (en) 1928-05-24

Family

ID=9809823

Family Applications (1)

Application Number Title Priority Date Filing Date
GB617827A Expired GB290767A (en) 1927-03-05 1927-03-05 Improvements in and relating to variable electric resistances

Country Status (2)

Country Link
FR (1) FR649967A (en)
GB (1) GB290767A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263616A (en) * 1963-12-16 1966-08-02 Gen Services Company Liquid rheostat
US4547169A (en) * 1980-09-03 1985-10-15 John Maxim Conductive fluid activated devices
US7448935B2 (en) 2003-11-21 2008-11-11 Mattel Inc. Liquid activated toys and operating systems for use with same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263616A (en) * 1963-12-16 1966-08-02 Gen Services Company Liquid rheostat
US4547169A (en) * 1980-09-03 1985-10-15 John Maxim Conductive fluid activated devices
US7448935B2 (en) 2003-11-21 2008-11-11 Mattel Inc. Liquid activated toys and operating systems for use with same

Also Published As

Publication number Publication date
FR649967A (en) 1928-12-31

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