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
GB15179/28A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AGfiledCriticalSiemens and Halske AG
Publication of GB294872ApublicationCriticalpatent/GB294872A/en
H04Q1/00—Details of selecting apparatus or arrangements
H04Q1/02—Constructional details
H04Q1/04—Frames or mounting racks for selector switches; Accessories therefor, e.g. frame cover
Landscapes
Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Structure Of Telephone Exchanges
(AREA)
Abstract
294,872. Siemens & Halske Akt.-Ges. July 30, 1927, [Convention date]. Automatic exchange selectors and apparatus.- Selectors and pole-changers (for converting direct current into alternating current for ringing purposes) are resiliently suspended from supporting racks or frames. In the example shown, rotary selectors 7 are mounted by clips 4 on spiral springs 2 secured by further clips 3 to an angle plate 1.
GB15179/28A1927-07-301928-05-23Arrangement for mounting telephone selectors and pole changers used in long distance communication installations
ExpiredGB294872A
(en)