GB518317A - Improvements in or relating to devices for introducing objects into the evacuated spaces of electron microscopes - Google Patents

Improvements in or relating to devices for introducing objects into the evacuated spaces of electron microscopes

Info

Publication number
GB518317A
GB518317A GB24688/38A GB2468838A GB518317A GB 518317 A GB518317 A GB 518317A GB 24688/38 A GB24688/38 A GB 24688/38A GB 2468838 A GB2468838 A GB 2468838A GB 518317 A GB518317 A GB 518317A
Authority
GB
United Kingdom
Prior art keywords
cartridge
plug
aperture
plunger
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
GB24688/38A
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.)
Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
Original Assignee
Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
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 Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH filed Critical Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
Publication of GB518317A publication Critical patent/GB518317A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J37/02—Details
    • H01J37/20—Means for supporting or positioning the object or the material; Means for adjusting diaphragms or lenses associated with the support
    • 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
    • H01J37/02—Details
    • H01J37/18—Vacuum locks ; Means for obtaining or maintaining the desired pressure within the vessel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Microscoopes, Condenser (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

518,317. Electron microscopes. FIDES GES. FUR DIE VERWALTUNG UND VERWERTUNG VON GEWERBLICHEN SCHUTZRECHTEN. Aug. 22, 1938, No. 24688. Convention date, Aug. 24, 1937. [Class 39 (i)] An object is introduced into the evacuated space of an electron microscope by means of a valve plug 3 having a transverse aperture ; the object is contained in a cartridge 6 which is introduced into the aperture, brought into the operating position by rotation of the plug and finally displaced longitudinally against a yielding control, tending to maintain the cartridge within the plug aperture, such as spring 9, by means of a plunger 13 which is movable toward and away from the objective lens 2, until the object is in the required position for operation. The cartridge comprises object carrier rings 7, 8, main body with evacuating holes 20, and a retaining ring 22 having a set-screw 11 sliding in a groove 12 to prevent rotation and pressed upwardly by spring 9. The plunger 13 has a rack actuated by a pinion 16 on a suitably packed shaft 17. The object is introduced through a side aperture and the plug is first turned until tube 19 opens into a small side tube which evacuates it roughly before being turned to the operating position. Cooling channels 21 are provided. The Specification as open to inspection under Sect. 91 includes moving the cartridge by means other than a plunger, and not necessarily against a yielding control. This subject-matter does not appear in the Specification as accepted.
GB24688/38A 1937-08-24 1938-08-22 Improvements in or relating to devices for introducing objects into the evacuated spaces of electron microscopes Expired GB518317A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE518317X 1937-08-24

Publications (1)

Publication Number Publication Date
GB518317A true GB518317A (en) 1940-02-23

Family

ID=6549931

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24688/38A Expired GB518317A (en) 1937-08-24 1938-08-22 Improvements in or relating to devices for introducing objects into the evacuated spaces of electron microscopes

Country Status (5)

Country Link
US (1) US2215794A (en)
BE (1) BE429854A (en)
FR (1) FR842484A (en)
GB (1) GB518317A (en)
NL (1) NL54222C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512947A (en) * 1946-08-30 1950-06-27 Hartford Nat Bank & Trust Co Electron microscope
DE2408406A1 (en) * 1973-02-21 1974-08-22 Brooks Norman B VALVES

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE483238A (en) * 1942-12-01

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512947A (en) * 1946-08-30 1950-06-27 Hartford Nat Bank & Trust Co Electron microscope
DE2408406A1 (en) * 1973-02-21 1974-08-22 Brooks Norman B VALVES

Also Published As

Publication number Publication date
FR842484A (en) 1939-06-13
NL54222C (en)
US2215794A (en) 1940-09-24
BE429854A (en)

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