US1301227A - Variable resistance. - Google Patents

Variable resistance. Download PDF

Info

Publication number
US1301227A
US1301227A US19565317A US19565317A US1301227A US 1301227 A US1301227 A US 1301227A US 19565317 A US19565317 A US 19565317A US 19565317 A US19565317 A US 19565317A US 1301227 A US1301227 A US 1301227A
Authority
US
United States
Prior art keywords
compound
resistance
light
variable resistance
sulfur
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 - Lifetime
Application number
US19565317A
Inventor
Theodore W Case
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US19565317A priority Critical patent/US1301227A/en
Application granted granted Critical
Publication of US1301227A publication Critical patent/US1301227A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G1/00—Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general
    • C01G1/12—Sulfides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C8/00—Non-adjustable resistors consisting of loose powdered or granular conducting, or powdered or granular semi-conducting material
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer

Definitions

  • This invention relates to certain improvements in variable resistances, and specifically contemplates a material as an element of an electric circuit, subject to the condition that variations in light produce a corresponding variation in the electrical resistance of the element, thereby effecting a change of current in accordance with variations of light intensity to which the element is exposed.
  • the object, therefore, of the invention is the production of a material or compound adapted to form a portion of an electric circuit or conductor, the resistance of which diminishes as the intensity of the light to which it is exposed increases.
  • a material comprising or consisting of a compound of thallium and sulfur can be utilized as a portion of an electric circuit, and that its resistance to the passage of currents through said circuit varies under the influence of light to effect a changeof current in accordance with the intensity of the light rays to which the substance is subjected,-and that a compound of thalliune and sulfur is peculiarly efficient for this purposev and highly sensitive to variation of light intensity due to the fact that the ratio of change or percentage change Of its resistance to the passage of an electric current under variations of light intensity is very great.
  • An interesting phenomenon of the invention consists in the'fact that the electrical resistance of the material specified is varied by rays of light invisible to the human eye, such variation of current being readily Specification of Letters Patent. Patented APR. 22, 1919 Application filed October 9, 1917. Serial No. 195,653.
  • the compound may constitute any portion or part of such circuit and when so embodied the compound may be supported in any suitable way for contact and exposure to light rays.
  • the invention is adapted for and may be applied to various uses, as, for instance, in the Bell photophone, and I, therefore, desire to broadly claim the same without restriction as to the method, manner or condition of use and without limitation as to the addition of any other elements to the material or compound so long as the same do not destroy the utility of the material for this purpose, or any other purpose, and I desire to claim the material for use with either direct, pulsating direct or alternating current.
  • the expression light rays as used in the specification and claims hereof, is deemed to include both visible and in- ,visible rays.
  • a resistance element formed of a compound of thallium and sulfur.
  • a resistance element formed of a material comprising a compound of thallium and sulfur.
  • An electric circuit having a portion supported for exposure to light rays, such portion comprising a compound of thallium and sulfur.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Thermistors And Varistors (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Adjustable Resistors (AREA)

Description

ran erm ne arena rrrcn.
THEODORE W. CASE, SCIPIO, NEW YORK.
VARIABLE RESISTANCE.
1% Drawing.
To all whom it may concern:
Be it known that I, THEODORE W. CASE, a
citizen of the United States of America, and
resident of Scipio, in the county of Cayuga and State of New York, have invented new and useful Improvements in Variable IRe- *sistances, of which the following is a full,
clear, and exact description.
This invention relates to certain improvements in variable resistances, and specifically contemplates a material as an element of an electric circuit, subject to the condition that variations in light produce a corresponding variation in the electrical resistance of the element, thereby effecting a change of current in accordance with variations of light intensity to which the element is exposed.
The object, therefore, of the invention is the production of a material or compound adapted to form a portion of an electric circuit or conductor, the resistance of which diminishes as the intensity of the light to which it is exposed increases.
I have discovered that a material comprising or consisting of a compound of thallium and sulfur can be utilized as a portion of an electric circuit, and that its resistance to the passage of currents through said circuit varies under the influence of light to effect a changeof current in accordance with the intensity of the light rays to which the substance is subjected,-and that a compound of thalliune and sulfur is peculiarly efficient for this purposev and highly sensitive to variation of light intensity due to the fact that the ratio of change or percentage change Of its resistance to the passage of an electric current under variations of light intensity is very great.
An interesting phenomenon of the invention consists in the'fact that the electrical resistance of the material specified is varied by rays of light invisible to the human eye, such variation of current being readily Specification of Letters Patent. Patented APR. 22, 1919 Application filed October 9, 1917. Serial No. 195,653.
may constitute any portion or part of such circuit and when so embodied the compound may be supported in any suitable way for contact and exposure to light rays.
The invention is adapted for and may be applied to various uses, as, for instance, in the Bell photophone, and I, therefore, desire to broadly claim the same without restriction as to the method, manner or condition of use and without limitation as to the addition of any other elements to the material or compound so long as the same do not destroy the utility of the material for this purpose, or any other purpose, and I desire to claim the material for use with either direct, pulsating direct or alternating current. The expression light rays, as used in the specification and claims hereof, is deemed to include both visible and in- ,visible rays.
What I claim is:
1. A resistance element formed of a compound of thallium and sulfur.
. 2. A resistance element formed of a compound comprising thallium and sulfur.
3. A resistance element formed of a material comprising a compound of thallium and sulfur.
4. An electric circuit having a portion supported for exposure to light rays, such portion comprising a compound of thallium and sulfur.
THEODORE W. CASE.
Witnesses:
E. A. THOMPSON, E. I. SPONABLE.
US19565317A 1917-10-09 1917-10-09 Variable resistance. Expired - Lifetime US1301227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US19565317A US1301227A (en) 1917-10-09 1917-10-09 Variable resistance.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19565317A US1301227A (en) 1917-10-09 1917-10-09 Variable resistance.

Publications (1)

Publication Number Publication Date
US1301227A true US1301227A (en) 1919-04-22

Family

ID=3368766

Family Applications (1)

Application Number Title Priority Date Filing Date
US19565317A Expired - Lifetime US1301227A (en) 1917-10-09 1917-10-09 Variable resistance.

Country Status (1)

Country Link
US (1) US1301227A (en)

Similar Documents

Publication Publication Date Title
SE8402366L (en) LAYER SELF-CONTROL HEATING DEVICE
ATE15112T1 (en) ELECTRICAL DEVICE CONTAINING PTC ELEMENTS.
US1301227A (en) Variable resistance.
US1309181A (en) Variable resistance
US1316350A (en) Ught-beactive besistance and method
US1342842A (en) Resistance element
US1316220A (en) Theodore w
US1298627A (en) Resistance element.
US1402889A (en) Electric heating element
US1418362A (en) Electrical resistance
US1166887A (en) Sauce-powder.
US991841A (en) Resistance compound.
US1980176A (en) Unidirectional current passing device
GB467190A (en) Improvements in or relating to electric potential sensitive devices
USD78436S (en) Design for a stanchion element for an electric-lighting fixture
US778666A (en) Flexible conduit.
USD64176S (en) Design for an electric-light wall bracket
USD79305S (en) Godfrey niebel
USD77118S (en) Design for an electric bulb or similar article
SU114951A1 (en) Multilayer mica electrical insulating material
US1034104A (en) Conductive ink.
USD70978S (en) Design por a column por electric-light fixtures or similar articles
SU385326A1 (en) CURRENT CONDUCTING MATERIAL FOR METAL-FILM RESISTANTS ON THE BASIS OF NICKEL
US1358220A (en) Muffle
US701959A (en) Glower for pyroelectric lamps and process of making same.