US1075768A - Arc-lamp electrode. - Google Patents

Arc-lamp electrode. Download PDF

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Publication number
US1075768A
US1075768A US75802513A US1913758025A US1075768A US 1075768 A US1075768 A US 1075768A US 75802513 A US75802513 A US 75802513A US 1913758025 A US1913758025 A US 1913758025A US 1075768 A US1075768 A US 1075768A
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United States
Prior art keywords
arc
light
lamp electrode
electrodes
carbon
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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
US75802513A
Inventor
Frank R Crane Jr
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.)
GEORGE N NELSON
HENRY JAMPOLIS
Original Assignee
GEORGE N NELSON
HENRY JAMPOLIS
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
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Application filed by GEORGE N NELSON, HENRY JAMPOLIS filed Critical GEORGE N NELSON
Priority to US75802513A priority Critical patent/US1075768A/en
Application granted granted Critical
Publication of US1075768A publication Critical patent/US1075768A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys

Definitions

  • Patented Oct. 1a was.
  • My invention relates to are lamp electrodes and contemplates better and more efficient composition which will produce more desirable light.
  • My improved electrodes will cause a flaming are but the light is of whitish pink color and much softer and less trying on the eyes.
  • the greater part of the electrode is of some carbonaceous substance which will give sufficient conductivity to current flow.
  • this conducting material are mixed various substances to give the desired color and intensity of light, and a suitable binder is added, the entire mass being compressed into form and may be baked.
  • I preferably use comminuted carbon orlamp black as the conducting body and add thereto soda ash, cast iron filings, metallic magnesium in suitable proportions to give the desired color and intensity, and preferably use cla-y as a binder.
  • the mixture is compressed and dried and, if desired, may be baked.
  • the substance added to the carbon will fuse and when the circuit is brokenthis fused mass cools and becomes glassy.
  • the proportion of carbon should be large enough so that the glassy mass will retain sufiicient carbon to enable current flow therethrough to start the are when the circuit is again closed.
  • Binder such as clay 2.5%
  • the soda ash, filings ,and magnesium combine to give a soft whitish pink light which has considerable volume but which does not try or hurt the eyes.
  • the light closely resembles day light and is therefore much more desirable than the sickly yellow light given off by other electrodes.
  • An electrode composed of a mixture of about 7 5% comminuted carbon, 12.5% soda ash, 5% iron filings, 5% metallic magnesium, and the remainder a suitable binder.

Description

FRANK R. CRANE, an, OF CHICAGO,
JAMPOLI$ AND ONE-THIRD T0 GEORGE N.
ILLINOIS, ASSIGNOR OF ONE-THIRD TO HENRY NELSON, BO'II-I OF CHICAGO, ILLINOIS.
' ARC-LAMP ELECTRODE.
No Drawing.
Specification of Letters Patent.
Patented Oct. 1a, was.
Application filed March 31, 1913. Serial No. 758,025.
To all whom it may concern Be it known that I, FRANK R. CRANE, Jr., a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have invented a new and useful Improvement in Arc Lamp Electrodes, of which the following is a specification.
My invention relates to are lamp electrodes and contemplates better and more efficient composition which will produce more desirable light. There are a great many electrodes on the market of various compositions which burn with a flaming are but such electrodes contain too much sodium and the light is sickly and trying on the eyes.-
My improved electrodes will cause a flaming are but the light is of whitish pink color and much softer and less trying on the eyes. The greater part of the electrode is of some carbonaceous substance which will give sufficient conductivity to current flow. With this conducting material are mixed various substances to give the desired color and intensity of light, and a suitable binder is added, the entire mass being compressed into form and may be baked.
I preferably use comminuted carbon orlamp black as the conducting body and add thereto soda ash, cast iron filings, metallic magnesium in suitable proportions to give the desired color and intensity, and preferably use cla-y as a binder. The mixture is compressed and dried and, if desired, may be baked.
When the electrodes are connected in circuit and an are forms between them the substance added to the carbon will fuse and when the circuit is brokenthis fused mass cools and becomes glassy. The proportion of carbon should be large enough so that the glassy mass will retain sufiicient carbon to enable current flow therethrough to start the are when the circuit is again closed.
Lfind that the following proportions give very eflicient results:
Comminuted carbon or lamp black 7 5.
Soda ash 12.5%
Cast iron filings 5. Metallic Magnesium 5.
Binder such as clay 2.5%
The soda ash, filings ,and magnesium combine to give a soft whitish pink light which has considerable volume but which does not try or hurt the eyes. The light closely resembles day light and is therefore much more desirable than the sickly yellow light given off by other electrodes.
It is evident that the proportions above may be somewhat varied without decreasing the efficiency and I do not therefore desire to be limited to the exact proportions stated.
I claim the following:
1. An electrode composed of a mixture of about 7 5% comminuted carbon, 12.5% soda ash, 5% iron filings, 5% metallic magnesium, and the remainder a suitable binder.
2. An electrode composed of the ingredients Comminuted carbon or lamp black" 75. I
Soda ash 12.5% Cast iron filings--. 5. Metallic magnesium 5.
Clay as a binder 2.5%
FRANK R. CRANE, JR.
Witnesses:
BENJ. S. MESIROW, Enw. R. NEUMANN.
the presence
US75802513A 1913-03-31 1913-03-31 Arc-lamp electrode. Expired - Lifetime US1075768A (en)

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US75802513A US1075768A (en) 1913-03-31 1913-03-31 Arc-lamp electrode.

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US75802513A US1075768A (en) 1913-03-31 1913-03-31 Arc-lamp electrode.

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US1075768A true US1075768A (en) 1913-10-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584318A (en) * 1949-07-22 1952-02-05 Ncr Co Marking member containing magnetized material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584318A (en) * 1949-07-22 1952-02-05 Ncr Co Marking member containing magnetized material

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