GB504097A - Improvements in and relating to annealing and melting furnaces working under reducedpressure - Google Patents

Improvements in and relating to annealing and melting furnaces working under reducedpressure

Info

Publication number
GB504097A
GB504097A GB25093/38A GB2509338A GB504097A GB 504097 A GB504097 A GB 504097A GB 25093/38 A GB25093/38 A GB 25093/38A GB 2509338 A GB2509338 A GB 2509338A GB 504097 A GB504097 A GB 504097A
Authority
GB
United Kingdom
Prior art keywords
crucible
discharge
working under
thermo
aug
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
GB25093/38A
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
Publication of GB504097A publication Critical patent/GB504097A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C7/00—Engines of flexible-wall type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/22—Means for obtaining or maintaining the desired pressure within the tube
    • H01J17/26—Means for producing, introducing, or replenishing gas or vapour during operation of the tube
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/121—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen tubes for oscillography
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32—Gas-filled discharge tubes
    • H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
    • H01J37/32018—Glow discharge

Abstract

504,097. Electric furnaces. BERGHAUS, B. Aug. 26, 1938, No. 25093. Convention date, Aug. 26, 1937. [Class 39 (iii)] A melting-furnace working under reduced pressure is heated by a gaseous electric glow discharge. The material to be heated is contained in a conducting crucible 2 which is connected as a cathode in a direct current discharge, and mounted in a metallic chamber 4 which forms the anode. The crucible 2 is supported by three members such as 5, 6, Fig. 1. These supports conduct electric current to the crucible 2 from the cables 9, are hollowed for water cooling, and are provided with spaced metallic sleeves 8 and screening caps such as 15, 16. A cooling jacket 28 and a vacuumtight inspection window 31 are provided for the vacuum vessel 4. The heating effect of the discharge is regulated by a thermo-element 17 mounted in a depression in the base of the crucible 2, and insulated and screened from the discharge. In a modification, the mounting of the thermo-element 17 acts as the sole support and current supply means for the crucible 2. In a further modification, auxiliary electrodes passing through the wall of the chamber 4 are used as the anode. The furnace also may be operated using alternating currents.
GB25093/38A 1937-08-27 1938-08-26 Improvements in and relating to annealing and melting furnaces working under reducedpressure Expired GB504097A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB179741D DE740453C (en) 1937-08-27 1937-08-27 Electric furnace heated by a glow discharge

Publications (1)

Publication Number Publication Date
GB504097A true GB504097A (en) 1939-04-19

Family

ID=25944803

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25093/38A Expired GB504097A (en) 1937-08-27 1938-08-26 Improvements in and relating to annealing and melting furnaces working under reducedpressure

Country Status (5)

Country Link
US (1) US2219612A (en)
DE (1) DE740453C (en)
FR (1) FR841938A (en)
GB (1) GB504097A (en)
NL (1) NL55877C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1121771B (en) * 1956-07-27 1962-01-11 Stauffer Chemical Co Vacuum melting device in which the material to be treated can be heated to melting heat with the aid of an electrical gas discharge process with simultaneous supply of a controllable amount of gas into the discharge area, and method for operating this device
DE1142158B (en) * 1956-05-09 1963-01-10 Wolfram Ferdinand Schultz Device to avoid fogging up of sight glasses, preferably on heated pressure vessels

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431887A (en) * 1940-01-16 1947-12-02 Penning Frans Michel Electric device and method for heating materials

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE375235C (en) * 1923-05-08 Franz Skaupy Dr Electric oven for heating objects to be brought into it

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1142158B (en) * 1956-05-09 1963-01-10 Wolfram Ferdinand Schultz Device to avoid fogging up of sight glasses, preferably on heated pressure vessels
DE1121771B (en) * 1956-07-27 1962-01-11 Stauffer Chemical Co Vacuum melting device in which the material to be treated can be heated to melting heat with the aid of an electrical gas discharge process with simultaneous supply of a controllable amount of gas into the discharge area, and method for operating this device

Also Published As

Publication number Publication date
US2219612A (en) 1940-10-29
FR841938A (en) 1939-06-01
DE740453C (en) 1943-10-21
NL55877C (en) 1944-03-15

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