GB543574A - Improvements in or relating to wireless receiving sets - Google Patents

Improvements in or relating to wireless receiving sets

Info

Publication number
GB543574A
GB543574A GB9703/40A GB970340A GB543574A GB 543574 A GB543574 A GB 543574A GB 9703/40 A GB9703/40 A GB 9703/40A GB 970340 A GB970340 A GB 970340A GB 543574 A GB543574 A GB 543574A
Authority
GB
United Kingdom
Prior art keywords
spindle
wheel
motor
roller
condenser
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
GB9703/40A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
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 Philips Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB543574A publication Critical patent/GB543574A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/14Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by auxiliary power
    • H03J5/143Settings determined by a number of positioning means mounted on a common support, e.g. turret tuner, which is adjustable to determined positions, a different positioning means being in operation in each position

Abstract

543,574. Selective control systems. PHILIPS LAMPS, Ltd. June 3, 1940, No. 9703. Convention date, June 5, 1939. [Class 40 (i)] [Also in Group XXXVI] An arrangement for adjusting a sliding electrode condenser 35 comprises a small electric motor which drives a wheel 23 on a hollow spindle 25 having a friction drive to a spindle 26 carrying a gear wheel 27 in engagement with a wheel 29 to which is fixed a member 30 formed with helical cam surfaces 31, 32. A roller 33 is mounted in a gap in body 30 so as to roll on the outer surface of a cylindrical metal body 19 freely mounted on the same spindle 47 as the wheel 29. The body 19 has bearing on it a number of contact springs corresponding to individual push buttons '(not shown) the arrangement being such that when a particular button is pressed, the motor is energized until the corresponding contact spring engages an insulating part 20 on body 19. When the motor is energized, body 30 is turned through parts 23, 25 and 27 and 29 until roller 33, which normally is diametrically opposed to spindle 25 moves up to engage spindle 25 after which wheel 29 cannot move, and clutch 28 slips. The cam body 30 has acted through roller 34 to move the condenser shaft against spring 36 to a datum position, and now the roller 33 acted on by spindle 25 turns body 19 until the appropriate contact spring engages insulating part 20. This positions an appropriate stop 43 opposite the end of shaft 42 so that when the motor is de-energized condenser shaft 42 returns under the action of spring 36 to its correct setting. At the same time a spring- mounted locating member 37 engages an appropriate recess 40. According as the stations corresponding to the push buttons are in one or other of two wave bands, the motor is arranged to turn in one or other direction to operate the condenser, and this alternative movement of wheel 29 is made use of to operate a wave range switch.
GB9703/40A 1939-06-05 1940-06-03 Improvements in or relating to wireless receiving sets Expired GB543574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL543574X 1939-06-05

Publications (1)

Publication Number Publication Date
GB543574A true GB543574A (en) 1942-03-04

Family

ID=19787288

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9703/40A Expired GB543574A (en) 1939-06-05 1940-06-03 Improvements in or relating to wireless receiving sets

Country Status (2)

Country Link
US (1) US2320808A (en)
GB (1) GB543574A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433805A (en) * 1943-09-27 1947-12-30 Zenith Radio Corp Control means for sequentially and selectively adjusting variable reactances over a band of frequencies
US2526610A (en) * 1944-05-05 1950-10-17 Hermann Thorens S A Mechanical tuning adjuster
US2574603A (en) * 1945-06-15 1951-11-13 Rca Corp Automatic selector mechanism
US2603329A (en) * 1946-09-23 1952-07-15 Melpar Inc Automatic selector mechanism
US2671168A (en) * 1948-07-14 1954-03-02 Rca Corp Automatically tuned receiver
US2537944A (en) * 1948-10-06 1951-01-16 Rca Corp Sequence and preselector signal seeking system
US2743620A (en) * 1950-08-30 1956-05-01 Gen Motors Corp Electrical apparatus
US2769514A (en) * 1951-05-03 1956-11-06 Witt Henry Clinton De Frequency selector device
DE923442C (en) * 1952-06-01 1955-02-14 Koerting Radio Werke Oswald Ri Drive arrangement for the voting mechanism in communications equipment
US3150338A (en) * 1962-04-11 1964-09-22 Gen Electric Fine tuning apparatus for a television receiver
US3654536A (en) * 1967-06-19 1972-04-04 Janome Sewing Machine Co Ltd System for stopping a single phase wound commutator motor at a fixed position
US3980937A (en) * 1974-10-24 1976-09-14 Molon Motor And Coil Corporation Fractional horsepower gear motor
EP2042517B1 (en) 2002-09-27 2012-11-14 Xencor, Inc. Optimized FC variants and methods for their generation

Also Published As

Publication number Publication date
US2320808A (en) 1943-06-01

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