GB339389A - Differential gear for driving spindles of wireless apparatus independently from the direction of rotation of the control knob - Google Patents

Differential gear for driving spindles of wireless apparatus independently from the direction of rotation of the control knob

Info

Publication number
GB339389A
GB339389A GB28924/29A GB2892429A GB339389A GB 339389 A GB339389 A GB 339389A GB 28924/29 A GB28924/29 A GB 28924/29A GB 2892429 A GB2892429 A GB 2892429A GB 339389 A GB339389 A GB 339389A
Authority
GB
United Kingdom
Prior art keywords
tuning
spindle
rotation
control knob
movement
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
GB28924/29A
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
Publication of GB339389A publication Critical patent/GB339389A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
    • H03J1/08—Toothed-gear drive; Worm drive

Landscapes

  • Rehabilitation Tools (AREA)
  • Structure Of Receivers (AREA)
  • Transmitters (AREA)
  • Gear Transmission (AREA)

Abstract

339,389. Defrance, H. July 12, 1929, [Convention date]. No Patent granted (Sealing fee not paid). Wireless tuning-apparatus, adjustment devices for.-A device for radio tuning devices comprises differential bevel gearing operated in either direction in combination with abutments-permit-- ting movement in one direction only of the driven member for tuning purposes, return movement of the control being effected by a spring. As shown, bevel gears 2, 4, 6, 7 are mounted in a loose cage 3, the driven spindle 8 turning always in the direction of the arrow 15. In one direction of rotation of the driving-spindle 1, the shaft 5 abuts against a fixed stop 11, and in the other direction, the gear, cage and movable stop 9 drive solidly with the spindle 8. A spring 12 takes up backlash and returns the parts on movement of the control knob to its zero position. A wavelength change-over switch is actuated by the tuning control.
GB28924/29A 1929-07-12 1929-09-24 Differential gear for driving spindles of wireless apparatus independently from the direction of rotation of the control knob Expired GB339389A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR339389X 1929-07-12

Publications (1)

Publication Number Publication Date
GB339389A true GB339389A (en) 1930-12-11

Family

ID=8891683

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28924/29A Expired GB339389A (en) 1929-07-12 1929-09-24 Differential gear for driving spindles of wireless apparatus independently from the direction of rotation of the control knob

Country Status (2)

Country Link
DE (1) DE532668C (en)
GB (1) GB339389A (en)

Also Published As

Publication number Publication date
DE532668C (en) 1931-09-02

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