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
GB322122A
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.)
GORDON CASTAGNOLI
Original Assignee
GORDON CASTAGNOLI
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Filing date
Publication date
Application filed by GORDON CASTAGNOLIfiledCriticalGORDON CASTAGNOLI
Priority to GB322122ApriorityCriticalpatent/GB195814A/en
Publication of GB195814ApublicationCriticalpatent/GB195814A/en
H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
H01F21/00—Variable inductances or transformers of the signal type
H01F21/005—Inductances without magnetic core
Abstract
195,814. Castagnoli, G. Feb. 3, 1922. Inductances.-A basket coil 2, or a honeycomb coil, is mounted within a helical coil 1 so as to be capable of rotation through 180‹ about a diameter. In the inductance shown, the coil 2 is clamped between strips 3 and 4 the latter of which is provided. with lugs 5 carrying pivots 6 mounted in bushings 7 in the former of the coil 2. The ends of the coil 2 are connected to the pivots 6 which are connected 'by spiral coils 9 of copper tape or the like to pins 10 on the former. The coil 1 may have two or more layers or may be section-wound.
GB322122A1922-02-031922-02-03Improvements in and relating to variable inductances for wireless reception apparatus
ExpiredGB195814A
(en)