GB220973A - Improvements in or relating to operating variable condensers or coils and the like employed for wireless telegraphy - Google Patents

Improvements in or relating to operating variable condensers or coils and the like employed for wireless telegraphy

Info

Publication number
GB220973A
GB220973A GB891423A GB891423A GB220973A GB 220973 A GB220973 A GB 220973A GB 891423 A GB891423 A GB 891423A GB 891423 A GB891423 A GB 891423A GB 220973 A GB220973 A GB 220973A
Authority
GB
United Kingdom
Prior art keywords
dial
wheel
spindle
coils
relating
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
GB891423A
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.)
ROBERT VICTOR RAWNSLEY
Original Assignee
ROBERT VICTOR RAWNSLEY
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 ROBERT VICTOR RAWNSLEY filed Critical ROBERT VICTOR RAWNSLEY
Priority to GB891423A priority Critical patent/GB220973A/en
Publication of GB220973A publication Critical patent/GB220973A/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
    • H03J1/14—Special arrangements for fine and coarse tuning

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Structure Of Receivers (AREA)

Abstract

220,973. Rawnsley, R. V. March 29, 1923. Wireless tuning- apparatus, adjustment devices for.- The rotary spindle 4 of a variable condenser, variometer or the like is given a fine adjustment by means of a spur bevel or friction wheel carried by an auxiliary spindle 15 mounted in the panel 1. In one arrangement, Fig. 4, the spindle 15 carries a spur wheel 10 which engages a toothed plate 11 secured to the back of the dial 2 on the main spindle 4. The wheel 10 and plate 11 may be placed at the back of the panel, or the wheel 10 may engage teeth cut directly on the dial 2, or in a rack secured to the periphery of the dial 2. In another arrangement the wheel and dial are formed with bevel teeth. In the arrangement shown in Fig. 10, a friction wheel 36 on the spindle 15 engage the bevelled edge of the dial 2. The Provisional Specification describes a'so worm gearing for obtaining the fine adjustment.
GB891423A 1923-03-29 1923-03-29 Improvements in or relating to operating variable condensers or coils and the like employed for wireless telegraphy Expired GB220973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB891423A GB220973A (en) 1923-03-29 1923-03-29 Improvements in or relating to operating variable condensers or coils and the like employed for wireless telegraphy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB891423A GB220973A (en) 1923-03-29 1923-03-29 Improvements in or relating to operating variable condensers or coils and the like employed for wireless telegraphy

Publications (1)

Publication Number Publication Date
GB220973A true GB220973A (en) 1924-08-29

Family

ID=9861739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB891423A Expired GB220973A (en) 1923-03-29 1923-03-29 Improvements in or relating to operating variable condensers or coils and the like employed for wireless telegraphy

Country Status (1)

Country Link
GB (1) GB220973A (en)

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