US210987A - Improvement in insulating induction-coils - Google Patents

Improvement in insulating induction-coils Download PDF

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US210987A
US210987A US210987DA US210987A US 210987 A US210987 A US 210987A US 210987D A US210987D A US 210987DA US 210987 A US210987 A US 210987A
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coils
improvement
induction
insulating
bobbins
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/127—Encapsulating or impregnating

Definitions

  • A is an ordinary induction coil or coils, or bobbins of wire, w' it their positive and negative poles (a a, and B is avessel of any suitable shape or size, containing an insulating-liquid, preferably paraffine-oil. I immerse the bobbins or coils, as shown in the drawing, and the coils, being kept thus immersed in the liquid, are protected from the influence of the damp atmosphere.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

D. BROOKS. Insulating Induction Coils.
No. 210,987. Patented Dec. 17, 1878.
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UNITED STATES PATENT OFFICE.
DAVID BROOKS, OF PHILADELPHIA, PENNSYLVANIA.
IMPROVEMENT IN lNSULATlNG INDUCTION-SOILS.
Specification forming part of Letters Patent No. 210,987, dated December 17, 1878; application filed October 25, 1878.
To all 107mm it may concern.-
Be itknown that I, DAVID BROOKS, of Philadelphia, Pennsylvania, have invented a new and useful Improvement in Insulating Induction-(Joils &c., of which the following is a specification The object of myinvention is to thoroughly insulate induction-coils or bobbins of wire of electrical instruments and protect them from the influence of the damp atmosphere. This object I attain in the manner which I will now proceed to describe, reference being had to the accompanying drawing, the figure in which il lustrates a method of carrying my invention into effect.
In the drawing, A is an ordinary induction coil or coils, or bobbins of wire, w' it their positive and negative poles (a a, and B is avessel of any suitable shape or size, containing an insulating-liquid, preferably paraffine-oil. I immerse the bobbins or coils, as shown in the drawing, and the coils, being kept thus immersed in the liquid, are protected from the influence of the damp atmosphere.
I claim as my invention- The within-described method of insulating induction-coils or bobbins of wire of electrical instruments-that is to say, by immersing said bobbins or coils in a liquid insulating substance, as set forth.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
DAVID BROOKS.
WVitnesses:
ALEX. PATTERSON, HARRY SMITH.
US210987D Improvement in insulating induction-coils Expired - Lifetime US210987A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4885970A (en) * 1985-11-25 1989-12-12 Fender C Leo Moisture-free electromagnetic pickup for an electrical musical instrument of the stringed type

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4885970A (en) * 1985-11-25 1989-12-12 Fender C Leo Moisture-free electromagnetic pickup for an electrical musical instrument of the stringed type

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