GB585851A - Improvements in or relating to electric switches particularly for radio receivers - Google Patents

Improvements in or relating to electric switches particularly for radio receivers

Info

Publication number
GB585851A
GB585851A GB2434644A GB2434644A GB585851A GB 585851 A GB585851 A GB 585851A GB 2434644 A GB2434644 A GB 2434644A GB 2434644 A GB2434644 A GB 2434644A GB 585851 A GB585851 A GB 585851A
Authority
GB
United Kingdom
Prior art keywords
switches
cam
switch blades
amplifier
roller
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
GB2434644A
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
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 Automatic Electric Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Priority to GB2434644A priority Critical patent/GB585851A/en
Publication of GB585851A publication Critical patent/GB585851A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous 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
    • H03J5/24—Discontinuous 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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/26—Discontinuous 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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection operated by hand

Landscapes

  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Toys (AREA)
  • Details Of Television Systems (AREA)

Abstract

585,851. Quick-action switches. TENCH, F. (Automatic Electric Laboratories, Inc.). Dec. 6, 1944, No. 24346. [Class 38 (v)] [Also in Group XL] The construction of the wave range switches is shown in Figs. 1 and 2. Mounted on the chassis in four sets, each set corresponding to one frequency range, are shielded compartments 14 each of which contain switch blades 31-33 actuating rod 26 and block 29 and an associated inductance coil (not shown). Each set of switches is actuated by a cam 19 on a control spindle 16 pressing against the first of the axially aligned rods 26 which are inter-connected by adjustable screws 41 and urged towards cam 19 by spring 45. Also mounted on the common spindle 16 are cams 21, 23 each actuating by means of followers 54, two sets of switch blades which are effective in changing the operating frequency of the IF amplifier as above. Two further cams, corresponding to cam 22, operate similar switches for broadening the frequency response of the IF amplifier. The switch blades 31-33 are formed of cylindrical wire rod to reduce the interelement capacitance, the terminal portions of the fixed blades 32, 33 being arcuate in shape for better contact with the blade 31 after it has been moved by co-operation with the aperture in the block 29. The control spindle is located in its different operating positions by the engagement of a roller 68 with notches in the periphery of a detent wheel 67, the roller 68 being mounted on a spring tensioned lever 69. Variation in the sequence of operation of the different switches controlled by any one cam may be obtained by the adjustment of the connecting screws 41.
GB2434644A 1944-12-06 1944-12-06 Improvements in or relating to electric switches particularly for radio receivers Expired GB585851A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2434644A GB585851A (en) 1944-12-06 1944-12-06 Improvements in or relating to electric switches particularly for radio receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2434644A GB585851A (en) 1944-12-06 1944-12-06 Improvements in or relating to electric switches particularly for radio receivers

Publications (1)

Publication Number Publication Date
GB585851A true GB585851A (en) 1947-02-26

Family

ID=10210274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2434644A Expired GB585851A (en) 1944-12-06 1944-12-06 Improvements in or relating to electric switches particularly for radio receivers

Country Status (1)

Country Link
GB (1) GB585851A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130014A (en) * 1982-10-22 1984-05-23 Tsuyama Mfg Co Ltd Electrical switch means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130014A (en) * 1982-10-22 1984-05-23 Tsuyama Mfg Co Ltd Electrical switch means

Similar Documents

Publication Publication Date Title
GB1024577A (en) Improvements in or relating to electric switches
GB684041A (en) Improvements in or relating to the tuning mechanism of radio apparatus
GB585851A (en) Improvements in or relating to electric switches particularly for radio receivers
US2154778A (en) Radio tuner
GB564930A (en) Improvements in or relating to radio apparatus and tuning mechanism therefor
GB440950A (en) Improvements in and relating to electric condensers more particularly for high frequency and wireless purposes and processes for the manufacture thereof
GB571836A (en) Improvements in or relating to variable permeability tuning arrangements for radio or like apparatus with band-spread tuning
US2468071A (en) Tuning apparatus with straight-line characteristic curve
US2435522A (en) Ratchet driven tuning means
GB538389A (en) Improvements in or relating to wireless receivers with bandspread tuning
US2251068A (en) Receiver with automatic tuning
GB597674A (en) Improvements in and relating to radio receivers
GB543639A (en) Improvements in or relating to the control mechanism of wireless receivers
SU110728A1 (en) Oscillatory circuit
GB898061A (en) Improvements in core-tuned coils and transformers
GB470023A (en) Improvements in and relating to electric switches and particularly such as are adapted for use in wireless receiving and like apparatus
GB896214A (en) Improvements in or relating to the tuning of radio receivers or the like
GB595226A (en) Improvements in push button switches
GB625068A (en) Improvements in push button tuning mechanism for radio receivers
GB697068A (en) Improvements in or relating to high-frequency tuning devices
GB250162A (en) Improvements in radio receiving apparatus
GB551761A (en) Tuning mechanism for wireless apparatus
GB640844A (en) Improvements relating to presettable tuning devices for radio receivers
GB874384A (en) Improvements in and relating to switch or control cams for machine tools and the like
GB407498A (en) Improvements in and relating to rotary electric switches