GB1512746A - Keyboard for the preselection of electromagnetic signals - Google Patents

Keyboard for the preselection of electromagnetic signals

Info

Publication number
GB1512746A
GB1512746A GB4230576A GB4230576A GB1512746A GB 1512746 A GB1512746 A GB 1512746A GB 4230576 A GB4230576 A GB 4230576A GB 4230576 A GB4230576 A GB 4230576A GB 1512746 A GB1512746 A GB 1512746A
Authority
GB
United Kingdom
Prior art keywords
key
tuning
piston
pressed
slider
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
GB4230576A
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.)
Autovox SpA
Original Assignee
Autovox SpA
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 Autovox SpA filed Critical Autovox SpA
Priority to GB4230576A priority Critical patent/GB1512746A/en
Publication of GB1512746A publication Critical patent/GB1512746A/en
Priority to HK5679A priority patent/HK5679A/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

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

1512746 Push-button tuning mechanism AUTOVOX SpA 12 Oct 1976 42305/76 Heading H3Q In a keyboard operated tuner each key 47 is guided on a frame 1 for movement at right-angles to a tuning slider 13 so that when a key is pressed an adjustable cam 42 on that key engages one end of an associated pivoted elbow lever 8 the other end of which coacts with one of slots 7 in the tuning slider 13 to move it to the preselected postion determined by the cam 42. To preset a tuning position a manual tuning knob 26 is pressed which moves arm 23 and 24 and a link 14 so as to release engagement of a roller 15 with a cam 54 of a pressed key and allow that key to be biased outwardly by a spring 39 into the rest position. The tuning slider is now set to the required position by rotating the knob 26 which drives a crank 12 and a pin 11 via a clutch. The key 47 to be preset is pulled outwardly so as to release a clamping lever (44, Fig. 3, not shown) so that the cam 42 in the form of a spring biased piston is released. Now the key is pressed in and piston 42 engages its associated elbow lever 8 and is preset in position and on further pressing in of the key the clamping lever (44) locks the piston 42. When the key is again pressed a platelet (51, Figs. 3 and 4, not shown) moves a slider 28 to unlock the clutch of the manual tuning mechanism and piston 42 drives the elbow lever 8 and tuning slider 13 to the preset position of piston 42.
GB4230576A 1976-10-12 1976-10-12 Keyboard for the preselection of electromagnetic signals Expired GB1512746A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4230576A GB1512746A (en) 1976-10-12 1976-10-12 Keyboard for the preselection of electromagnetic signals
HK5679A HK5679A (en) 1976-10-12 1979-01-24 A keyboard for the preselection of electromagnetic signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4230576A GB1512746A (en) 1976-10-12 1976-10-12 Keyboard for the preselection of electromagnetic signals

Publications (1)

Publication Number Publication Date
GB1512746A true GB1512746A (en) 1978-06-01

Family

ID=10423850

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4230576A Expired GB1512746A (en) 1976-10-12 1976-10-12 Keyboard for the preselection of electromagnetic signals

Country Status (2)

Country Link
GB (1) GB1512746A (en)
HK (1) HK5679A (en)

Also Published As

Publication number Publication date
HK5679A (en) 1979-02-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee