GB805812A - Device for preventing the misting over of observation windows for inspection into vacuum plants in which substances such as metals are evaporated - Google Patents

Device for preventing the misting over of observation windows for inspection into vacuum plants in which substances such as metals are evaporated

Info

Publication number
GB805812A
GB805812A GB15905/57A GB1590557A GB805812A GB 805812 A GB805812 A GB 805812A GB 15905/57 A GB15905/57 A GB 15905/57A GB 1590557 A GB1590557 A GB 1590557A GB 805812 A GB805812 A GB 805812A
Authority
GB
United Kingdom
Prior art keywords
evaporated
inspection
metals
substances
preventing
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
GB15905/57A
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.)
GERAETEBAU ANSTALT OF BALZERS
Original Assignee
GERAETEBAU ANSTALT OF BALZERS
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 GERAETEBAU ANSTALT OF BALZERS filed Critical GERAETEBAU ANSTALT OF BALZERS
Publication of GB805812A publication Critical patent/GB805812A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/004—Sight-glasses therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere

Abstract

<PICT:0805812/III/1> Misting on the observation window 4 of a vacuum metal evaporation plant is prevented by supplying a current of argon from a container 8 controlled by a needle valve 7 and directed against the inner face of the window by a nozzle 10. The latter is enclosed by a cylinder 11 partially closed at the inner end by one or more diaphragms each formed with a viewing aperture 13. The invention may be combined with known devices such as removable blinds, protective glasses, wipers, pinhole diaphragms or cooled diaphragms.
GB15905/57A 1956-06-12 1957-05-20 Device for preventing the misting over of observation windows for inspection into vacuum plants in which substances such as metals are evaporated Expired GB805812A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE805812X 1956-06-12

Publications (1)

Publication Number Publication Date
GB805812A true GB805812A (en) 1958-12-10

Family

ID=6722451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15905/57A Expired GB805812A (en) 1956-06-12 1957-05-20 Device for preventing the misting over of observation windows for inspection into vacuum plants in which substances such as metals are evaporated

Country Status (1)

Country Link
GB (1) GB805812A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1300516B (en) * 1963-08-26 1969-08-07 Air Reduction Device to prevent fogging of sight glasses in vacuum systems
EP0781594A1 (en) 1995-12-29 1997-07-02 Glatt Gmbh Wall comprising at least one window with at least one glass pane
EP1385007A2 (en) * 1995-08-11 2004-01-28 TPA Howe-Baker Limited Sealed observation element for sulfur recovery unit
WO2015014590A1 (en) * 2013-07-29 2015-02-05 Wacker Chemie Ag Process for producing polycrystalline silicon

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1300516B (en) * 1963-08-26 1969-08-07 Air Reduction Device to prevent fogging of sight glasses in vacuum systems
EP1385007A2 (en) * 1995-08-11 2004-01-28 TPA Howe-Baker Limited Sealed observation element for sulfur recovery unit
EP1385007A3 (en) * 1995-08-11 2004-03-17 TPA Howe-Baker Limited Sealed observation element for sulfur recovery unit
EP0781594A1 (en) 1995-12-29 1997-07-02 Glatt Gmbh Wall comprising at least one window with at least one glass pane
WO2015014590A1 (en) * 2013-07-29 2015-02-05 Wacker Chemie Ag Process for producing polycrystalline silicon
CN105408012A (en) * 2013-07-29 2016-03-16 瓦克化学股份公司 Process for producing polycrystalline silicon
CN105408012B (en) * 2013-07-29 2017-03-15 瓦克化学股份公司 method for producing polysilicon
US9845247B2 (en) 2013-07-29 2017-12-19 Wacker Chemie Ag Process for producing polycrystalline silicon
US10562779B2 (en) 2013-07-29 2020-02-18 Wacker Chemie Ag Process for producing polycrystalline silicon

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