GB489291A - Improvements in or relating to driving means for electric condensers - Google Patents

Improvements in or relating to driving means for electric condensers

Info

Publication number
GB489291A
GB489291A GB195937A GB195937A GB489291A GB 489291 A GB489291 A GB 489291A GB 195937 A GB195937 A GB 195937A GB 195937 A GB195937 A GB 195937A GB 489291 A GB489291 A GB 489291A
Authority
GB
United Kingdom
Prior art keywords
shaft
gear wheels
gearing
cam
disc
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
GB195937A
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.)
IGOR FELDHUSEN
STC PLC
Original Assignee
IGOR FELDHUSEN
Standard Telephone and Cables PLC
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 IGOR FELDHUSEN, Standard Telephone and Cables PLC filed Critical IGOR FELDHUSEN
Priority to GB195937A priority Critical patent/GB489291A/en
Publication of GB489291A publication Critical patent/GB489291A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/18Control by auxiliary power

Landscapes

  • Braking Arrangements (AREA)

Abstract

489,291. Adjusting wireless apparatus; toothed gearing. STANDARD TELEPHONES & CABLES, Ltd., and FELDHUSEN, I. Jan. 22, 1937, No. 1959. [Class 37] [Also in Group XXIV] The movable vanes of a variable condense] are mounted on a shaft connected by gearing to the shaft of a driving motor, and means are provided for rendering the gearing ineffective at will, so that the condenser may be con trolled manually, inde pendently of the motor drive. In the con struction shown, meshing gear wheels C, D, which also mesh with gear wheels B, E respectively fixed to the driving shaft A and driven shaft F, are mounted on a frame consisting of discs I, G, which are connected together by pillars H and are freely rotatable about the shafts A, F. The disc I is formed as a brake drum surrounded by brake shoes K hinged at one end and pressed against a cam L at the other end by a spring M, the tension of which can be adjusted. In the position shown, the shaft F is rotatable manually independently of the motor, but on rotating the cam L through 90‹ by means of a handle N, the brake shoes grip the disc I and hold the frame stationary, in which postion the shaft D drives the shaft F through the gear wheels. The arrangement is particularly suitable for use in tuning an oscillator in an apparatus for recording the attenuation of a transmission line for a range of frequencies.
GB195937A 1937-01-22 1937-01-22 Improvements in or relating to driving means for electric condensers Expired GB489291A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB195937A GB489291A (en) 1937-01-22 1937-01-22 Improvements in or relating to driving means for electric condensers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB195937A GB489291A (en) 1937-01-22 1937-01-22 Improvements in or relating to driving means for electric condensers

Publications (1)

Publication Number Publication Date
GB489291A true GB489291A (en) 1938-07-22

Family

ID=9731056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB195937A Expired GB489291A (en) 1937-01-22 1937-01-22 Improvements in or relating to driving means for electric condensers

Country Status (1)

Country Link
GB (1) GB489291A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452036A1 (en) * 1979-03-23 1980-10-17 Reliance Electric Co DEMULTIPLIER WITH ADJUSTABLE STARTING SPEED
GB2312940A (en) * 1996-05-01 1997-11-12 Spf Engineering Limited A valve adapter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452036A1 (en) * 1979-03-23 1980-10-17 Reliance Electric Co DEMULTIPLIER WITH ADJUSTABLE STARTING SPEED
GB2312940A (en) * 1996-05-01 1997-11-12 Spf Engineering Limited A valve adapter

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