US2557589A - Open electric arc lamp and unit of electrodes therefor - Google Patents

Open electric arc lamp and unit of electrodes therefor Download PDF

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Publication number
US2557589A
US2557589A US170987A US17098750A US2557589A US 2557589 A US2557589 A US 2557589A US 170987 A US170987 A US 170987A US 17098750 A US17098750 A US 17098750A US 2557589 A US2557589 A US 2557589A
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US
United States
Prior art keywords
electrodes
unit
arc lamp
lamp
electric arc
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
US170987A
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English (en)
Inventor
Bayerl Adolf
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
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Publication of US2557589A publication Critical patent/US2557589A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B31/00—Electric arc lamps
    • H05B31/02—Details
    • H05B31/18—Mountings for electrodes; Electrode feeding devices

Definitions

  • This invention relates to a set of electrodes for single use in an open arc lamp, especially for irradiating purposes in therapeutics, in which the electrodes have their rear ends equipped with contacting members and their fore ends rigidly spaced apart a predetermined distance, said electrodes and said contacting members forming an integral unit of substantially the same size as the set of electrodes.
  • An object of the invention is to overcome these drawbacks and to facilitate the insertion as well as the removal of the set of electrodes in an open arc lamp.
  • a further object is to providean arrangement by which the electrodes can be handled as an integral unit during as well as after their use in the arc lamp.
  • a still further object of this invention is to provide units of this kind with more than one pair of electrodes. in order to form a plurality of electric arcs, simultaneously or consecutively.
  • Another object of the invention is to provide an open electric arc lamp of special construction in which the above mentioned units .of electrodes can be applied with advantage.
  • Fig. 1 is a sectional view of an open arc lamp comprising an electrode unit in accordance with the invention.
  • Fig. 2 shows, on a larger scale, part of a section taken on the line II-II in Fig. 1.
  • Fig. 3 is a side view of a unit, according to the invention, comprising two pairs of electrodes.
  • the open arc lamp shown in Fig. 1 comprises a casing i surrounding the reflector 2 and the guides la and 3b for reception of an electrode unit used in combination with this lamp in accordance with the invention.
  • the guides comprise two parallel channel-shaped conductive rails 3a and 3b which are closed at their lower ends and arranged with their open channelled sides in faceto-face relationship.
  • the conductive rails 311, lb are secured to an insulated body 4 on which is mounted a funnel-shaped inlet member 5. Junetion terminals 6 and l electrically connect said rails in and 3b, through suitable wires, to a source of current (not shown).
  • a unit 8 is arranged comprising two electrodes 9 and II clamped in holders Ii and I2, respectively, said holders being preferably made of copper.
  • Each of these holders or contacting members consists of a strip which is turned up at its lower end so as to embrace the electrode (see Fig. 2), while a part of its upper end is doubled back upon itself to form a clamp I: for a sheet H of mica serving as a lateral connecting member between the electrodes S and Ill.
  • a conductive bridging member ll of graphite is provided between the front ends of the electrodes 8 and ID . A rigid metal wire l'l even if current is on, because the handle II is insulated through connecting member H.
  • the unit is lowered until it abuts against the end walls I! and 20 of the guide channels Ia and 3b. If the current is on the lamp will immediately ignite, and the bridge It will gradually disappear. Similarly the electrode unit can be withdrawn from the lamp by means of the wire ll, also without danger, and with the current on, whereupon the irradiating operation will cease. The removed unit of electrodes may be discarded and immediately replaced by a new one.
  • Fig. 3 A unit of this kind comprising two pairs of electrodes is shown in Fig. 3.
  • This unit consists of two outer holders II and I2 for the electrodes 9 and ill and an intermediate holder 2
  • and I! are attached to the lateral connecting member I by 3 means or rivets 23.
  • the bridging members I! are applied on the lower sides of the electrodes between the conductive holders ll,2l and I2.
  • the various pairs of electrodes in a single unit may be arranged also in such a manner that the electric arcs. are formed consecutively instead of simultaneously.
  • the ignition 01' the arc may be effected by separate conducting pieces which are temporarily brought into contact with the electrodes bodies.
  • an electrode unit for for are lamps comprising spaced electrodes, the provision of insulated handling means permanently bridging said electrodes.
  • an electrode unit for are lamps comprising spaced pairs of electrodes, the provision of insulated handling means permanently bridging said pairs of electrodes.
  • an .electrode unit for are lamps compris-v ing spaced electrodes, the provision of an insulated bridge permanently connecting said electrodes and handling means connected to said bridge.
  • an electrode assembly for are lamps comprising spaced electrodes, the provision of a bridge permanently connecting said'electrodes, means for insulating said bridge and means associated with said bridge for insertion and removal of said electrode assembly from an arc lamp.
  • An open arc lamp comprising in combination, a lamp casing, an inlet in said casing, spaced electrically conductive retaining means within said casing in alignment with and insulated from said inlet, means for connecting said retaining means with a, source of power, and an integral electrode unit for location in said retaining means comprising-spaced electrodes, an insulating bridge permanently connecting said electrodes and a projecting handle secured to said bridge and extending outwardly through said inlet.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US170987A 1949-07-06 1950-06-29 Open electric arc lamp and unit of electrodes therefor Expired - Lifetime US2557589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL719213X 1949-07-06

Publications (1)

Publication Number Publication Date
US2557589A true US2557589A (en) 1951-06-19

Family

ID=19815043

Family Applications (1)

Application Number Title Priority Date Filing Date
US170987A Expired - Lifetime US2557589A (en) 1949-07-06 1950-06-29 Open electric arc lamp and unit of electrodes therefor

Country Status (5)

Country Link
US (1) US2557589A (is")
BE (1) BE496758A (is")
FR (1) FR1021249A (is")
GB (1) GB719213A (is")
NL (1) NL70599C (is")

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735330A (en) * 1956-02-21 Spectrog
US2895078A (en) * 1951-08-10 1959-07-14 Leeds & Northrup Co Light sources for spectrograph systems

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735330A (en) * 1956-02-21 Spectrog
US2895078A (en) * 1951-08-10 1959-07-14 Leeds & Northrup Co Light sources for spectrograph systems

Also Published As

Publication number Publication date
GB719213A (en) 1954-12-01
BE496758A (is")
NL70599C (is")
FR1021249A (fr) 1953-02-16

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