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US1777861A - Device for protecting the exhausting socket of vacuum glass vessels containing mercury - Google Patents

Device for protecting the exhausting socket of vacuum glass vessels containing mercury Download PDF

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Publication number
US1777861A
US1777861A US207245A US20724527A US1777861A US 1777861 A US1777861 A US 1777861A US 207245 A US207245 A US 207245A US 20724527 A US20724527 A US 20724527A US 1777861 A US1777861 A US 1777861A
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US
United States
Prior art keywords
socket
exhausting
protecting
vacuum glass
glass vessels
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
US207245A
Inventor
Schott Erich
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.)
Firm Jenaer Glaswerk Schott &
Firm Jenaer Glaswerk Schott & Gen
Original Assignee
Firm Jenaer Glaswerk Schott &
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 Firm Jenaer Glaswerk Schott & filed Critical Firm Jenaer Glaswerk Schott &
Application granted granted Critical
Publication of US1777861A publication Critical patent/US1777861A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/04—Re-forming tubes or rods
    • C03B23/13—Reshaping combined with uniting or heat sealing, e.g. for making vacuum bottles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J13/00—Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
    • H01J13/02—Details
    • H01J13/04—Main electrodes; Auxiliary anodes
    • H01J13/06—Cathodes
    • H01J13/14—Cooling, heating, circulating, filtering, or controlling level of the liquid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0072—Disassembly or repair of discharge tubes
    • H01J2893/0073—Discharge tubes with liquid poolcathodes; constructional details
    • H01J2893/0074—Cathodic cups; Screens; Reflectors; Filters; Windows; Protection against mercury deposition; Returning condensed electrode material to the cathodic cup; Liquid electrode level control
    • H01J2893/0084—Protection against mercury deposition

Definitions

  • a particularly simplified and at the same time very effective construction for such a device consists in the use of a stopper which penetrates from the socket into a constriction, lying between the vessel and the socket, and fills it up as tightly as possible. It is not necessary, however, to attain perfect tightness (e. g. by grinding in) but it suflices' if the stopper -tits approximately. It has proved of particular advantage to impartto the stopper such a length that it projects into the glass vessel.
  • the glass Vessel is denoted by a, the exhausting socket by b.
  • a cylindrical stopper 0 fits with only slight play into the constriction 71 of the socket.
  • the drawing shows the' point d of the socket in a fused state, corresponding to a glass vessel ready for use.
  • the point is still open, and the socket is being connected to an air pump.
  • the stopper When evacuating the air is not prevented by the stopper to rush by the latter and escape from the vessel.
  • the mercury cannot pass by the stopper and cause damage to the socket, since the surface tension of the mercury prevents it from rushing past it.
  • a head 0 prevents the stopper from falling out of the socket.
  • a socket for the evacuation of the vessel having a constriction, and a cylindricalstopper projecting from the said socket into the constriction, having a thickness corresponding tothe width of the constriction and being movable therein.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Description

Oct. 7, 1930. E. SCHOTT 1,777,361
DEVICE FOR PROTECTING THE EXHAUSTING SOCKET OF VACUUM GLASS VESSELS CONTAINING MERCURY Filed July 20,- 1927 Jn ventar:
Patented Oct. 7, 1930 UNITED STATES- IERICH SGHOTT, F
JENA, GERMANY; ASSIGNOR TO THE FIRE: J'ENAER GLASWEBK SCHOT'I. & GEN., 01 L'I'ENA, GERMANY DEVICE FOR PROTECTING THE EXHA USTING SOCKET 0F VACUUMI GLASS VESSELS CON- TAINING- MERCURY Application filed July 20, 1927, Serial no.
In vacuum glass vessels in order to avoid the mercury contained therein injuring the exhausting socket due to sudden changes of the position of the vessel, it has been suggested to dispose in the socket a body by which the opening of the socket is for the most part closed. According to the present invention a particularly simplified and at the same time very effective construction for such a device consists in the use of a stopper which penetrates from the socket into a constriction, lying between the vessel and the socket, and fills it up as tightly as possible. It is not necessary, however, to attain perfect tightness (e. g. by grinding in) but it suflices' if the stopper -tits approximately. It has proved of particular advantage to impartto the stopper such a length that it projects into the glass vessel.
The annexed drawing shows an example of the invention. v
The glass Vessel is denoted by a, the exhausting socket by b. A cylindrical stopper 0 fits with only slight play into the constriction 71 of the socket. The drawingshows the' point d of the socket in a fused state, corresponding to a glass vessel ready for use. When evacuating the vessel the point is still open, and the socket is being connected to an air pump. When evacuating the air is not prevented by the stopper to rush by the latter and escape from the vessel. However, when in use the mercury cannot pass by the stopper and cause damage to the socket, since the surface tension of the mercury prevents it from rushing past it. A head 0 prevents the stopper from falling out of the socket.
I claim:
1. In a glass vessel to be evacuated a socket for the evacuation of the vessel, the socket having a constriction, and a cylindricalstopper projecting from the said socket into the constriction, having a thickness corresponding tothe width of the constriction and being movable therein.
2. In a glass vessel to be evacuated a socket for the evacuation; of the vessel, the socket having a constriction, and a cylindrical stopper projecting from the said socket through the-constriction into the glass vessel, having 207,245, and in Germany August 2, 1926.
tion. v
ERICH SCHOTT.
US207245A 1926-08-02 1927-07-20 Device for protecting the exhausting socket of vacuum glass vessels containing mercury Expired - Lifetime US1777861A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1777861X 1926-08-02

Publications (1)

Publication Number Publication Date
US1777861A true US1777861A (en) 1930-10-07

Family

ID=7742875

Family Applications (1)

Application Number Title Priority Date Filing Date
US207245A Expired - Lifetime US1777861A (en) 1926-08-02 1927-07-20 Device for protecting the exhausting socket of vacuum glass vessels containing mercury

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666545A (en) * 1949-05-20 1954-01-19 John J Hopfield Container having a distortable flow control means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666545A (en) * 1949-05-20 1954-01-19 John J Hopfield Container having a distortable flow control means

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