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
GB32216/33A
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.)
IDEAL WERKE A G fur DRAHTLOSE
Original Assignee
IDEAL WERKE A G fur DRAHTLOSE
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 IDEAL WERKE A G fur DRAHTLOSEfiledCriticalIDEAL WERKE A G fur DRAHTLOSE
Publication of GB414937ApublicationCriticalpatent/GB414937A/en
H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
H03J1/02—Indicating arrangements
H03J1/04—Indicating arrangements with optical indicating means
H03J1/044—Illumination of the tuning dial; On and off switching of the illumination; Circuits related with illumination
Abstract
414,937. Adjusting wireless apparatus. IDEAL WERKE AKT.-GES. FUR DRAHTLOSE TELEPHONIE, Hohenschonhausen, Berlin. Nov. 18, 1933, No. 32216. Convention date, Nov. 24, 1932. [Class 37.] A tuning indicator comprises a dial a having columnar indications b-e behind which is rotated an endless shutter band f provided with a single slit for each indicator column, the shutter being actuated by the tuning control l and having reflecting inner surfaces illuminated by a lamp q so that single index marks are distinguished. The band f may be constructed of transparent material.
GB32216/33A1932-11-241933-11-18Improvements in and relating to shutter devices for wireless tuning dials
ExpiredGB414937A
(en)