GB327771A - Improvements in and connected with electric control of shop window blinds - Google Patents

Improvements in and connected with electric control of shop window blinds

Info

Publication number
GB327771A
GB327771A GB187629A GB187629A GB327771A GB 327771 A GB327771 A GB 327771A GB 187629 A GB187629 A GB 187629A GB 187629 A GB187629 A GB 187629A GB 327771 A GB327771 A GB 327771A
Authority
GB
United Kingdom
Prior art keywords
electric control
window blinds
shop window
switch
blind
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
GB187629A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB187629A priority Critical patent/GB327771A/en
Publication of GB327771A publication Critical patent/GB327771A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/20—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using multi-position switch, e.g. drum, controlling motor circuit by means of relays

Abstract

327,771. Burns, P. Jan. 19, 1929. Window blinds. - A roller blind for a shop window is rotated, to'raise and lower the blind, by an electric motor E controlled by a reversing switch A, limit switches B, B<1> stopping the motor when the blind is fully raised or lowered. Time mechanism D acts as a master switch for the reversing switch A and operates a switch 0 controlling the illumination of the window.
GB187629A 1929-01-19 1929-01-19 Improvements in and connected with electric control of shop window blinds Expired GB327771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB187629A GB327771A (en) 1929-01-19 1929-01-19 Improvements in and connected with electric control of shop window blinds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB187629A GB327771A (en) 1929-01-19 1929-01-19 Improvements in and connected with electric control of shop window blinds

Publications (1)

Publication Number Publication Date
GB327771A true GB327771A (en) 1930-04-17

Family

ID=9729576

Family Applications (1)

Application Number Title Priority Date Filing Date
GB187629A Expired GB327771A (en) 1929-01-19 1929-01-19 Improvements in and connected with electric control of shop window blinds

Country Status (1)

Country Link
GB (1) GB327771A (en)

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