GB191159A - Improvements in electric inductances and inductance coils and the like - Google Patents

Improvements in electric inductances and inductance coils and the like

Info

Publication number
GB191159A
GB191159A GB2644921A GB2644921A GB191159A GB 191159 A GB191159 A GB 191159A GB 2644921 A GB2644921 A GB 2644921A GB 2644921 A GB2644921 A GB 2644921A GB 191159 A GB191159 A GB 191159A
Authority
GB
United Kingdom
Prior art keywords
rods
frame
wire
adjacent
pivoted together
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
GB2644921A
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.)
ROBERT TAYLOR SMITH
Original Assignee
ROBERT TAYLOR SMITH
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 ROBERT TAYLOR SMITH filed Critical ROBERT TAYLOR SMITH
Priority to GB2644921A priority Critical patent/GB191159A/en
Publication of GB191159A publication Critical patent/GB191159A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

191,159. Smith, R. T. Oct. 6, 1921. Regulating transformers.-A variable coupling- device comprises single-handed windings around a closed or polygonal frame which is collapsable and expansible to vary the cross-sectional area cf each convolution. In the construction shown in Fig. 1, the two ends of the frame comprise flat bars 9 arranged as a four-sided structure with adjacent ends pivoted together. The end structures are connected by parallel rods 11, coaxial with the corner pivots 10, and the wire 12 is wound around the frame so formed. Grooves may be provided in the rods to prevent displacement of the wire, or if insulated, adjacent convolutions may be allowed to touch. To prevent substantial variation in the tension of the wire when thestructure is expanded or collapsed, the rods 11 are made of circular section; further, one or more rods may be resiliently mounted or on a movable eccentric, or the rods may be of elliptical or similar section. The frame may be mounted upon a stand 13, Fig. 6, with vertical limbs slotted at 16 to receive the ends of a rod, and provided with clamping means 14 to secure it in any desired position. A graduated scale 15 is also provided. In a modification, the frame consists of flat boards pivoted together at adjacent edges.
GB2644921A 1921-10-06 1921-10-06 Improvements in electric inductances and inductance coils and the like Expired GB191159A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2644921A GB191159A (en) 1921-10-06 1921-10-06 Improvements in electric inductances and inductance coils and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2644921A GB191159A (en) 1921-10-06 1921-10-06 Improvements in electric inductances and inductance coils and the like

Publications (1)

Publication Number Publication Date
GB191159A true GB191159A (en) 1923-01-08

Family

ID=10243779

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2644921A Expired GB191159A (en) 1921-10-06 1921-10-06 Improvements in electric inductances and inductance coils and the like

Country Status (1)

Country Link
GB (1) GB191159A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137759A (en) * 1983-04-08 1984-10-10 Varian Associates Rf probe for gyromagnetic spectrometer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137759A (en) * 1983-04-08 1984-10-10 Varian Associates Rf probe for gyromagnetic spectrometer
US4517516A (en) * 1983-04-08 1985-05-14 Varian Associates, Inc. NMR Probe coil form structure

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