GB526153A - Control device for radio receivers and the like - Google Patents

Control device for radio receivers and the like

Info

Publication number
GB526153A
GB526153A GB7661/39A GB766139A GB526153A GB 526153 A GB526153 A GB 526153A GB 7661/39 A GB7661/39 A GB 7661/39A GB 766139 A GB766139 A GB 766139A GB 526153 A GB526153 A GB 526153A
Authority
GB
United Kingdom
Prior art keywords
shaft
cams
cam
washers
march
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
GB7661/39A
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.)
Philco Radio and Television Corp
Original Assignee
Philco Radio and Television Corp
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 Philco Radio and Television Corp filed Critical Philco Radio and Television Corp
Publication of GB526153A publication Critical patent/GB526153A/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
    • H03J5/02—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/04—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by hand
    • H03J5/12—Settings determined by a number of separately-actuated driving means which adjust the tuning element directly to desired settings

Landscapes

  • Transmission Devices (AREA)
  • Mechanical Control Devices (AREA)
  • Structure Of Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

526,153. Wireless receiving apparatus. PHILCO RADIO & TELEVISION CORPORATION. March 9. 1939, No. 7661. Convention date, March 10, 1938. [Class 37] Press-button tuning of a wireless set is effected by cams 31 on a shaft 8 which is geared to the tuning condensers. The pressbuttons each carry a pair of rollers 51, 52 which are arranged to engage opposite sides of the associated cam 31, shown in Fig. 8, both rollers engaging shoulders s on the cam when in the fully-operated position. The cams are loosely mounted on shaft 8 between washers 33, which have tongues 34 engaging a key-way 12 in the shaft, the shaft, washers, and cams being rigidly held when the portion 37 of the shaft is screwed into position. The cams are set by releasing portion 37, , depressing the associated key, manually adjusting the condenser shaft to the required position, and tightening portion 37. When a button is depressed and the cam shaft set, it is normally returned at once by spring 49. A spring- pressed locking member 53 which engages notches 56 in the plungers may be provided.
GB7661/39A 1938-03-10 1939-03-09 Control device for radio receivers and the like Expired GB526153A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US195182A US2285247A (en) 1938-03-10 1938-03-10 Control device for radio receivers and the like

Publications (1)

Publication Number Publication Date
GB526153A true GB526153A (en) 1940-09-11

Family

ID=22720344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7661/39A Expired GB526153A (en) 1938-03-10 1939-03-09 Control device for radio receivers and the like

Country Status (2)

Country Link
US (1) US2285247A (en)
GB (1) GB526153A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477995A (en) * 1945-04-28 1949-08-02 Belmont Radio Corp Shaft-positioning apparatus
US3230780A (en) * 1963-03-21 1966-01-25 Motorola Inc Automatic tuning mechanism
US3699817A (en) * 1970-12-09 1972-10-24 Motorola Inc Isolator washer means for pushbutton tuner memory mechanism

Also Published As

Publication number Publication date
US2285247A (en) 1942-06-02

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