GB409245A - Improvements in mechanisms for the fine focusing adjustment of the tube of a microscope - Google Patents

Improvements in mechanisms for the fine focusing adjustment of the tube of a microscope

Info

Publication number
GB409245A
GB409245A GB33985/33A GB3398533A GB409245A GB 409245 A GB409245 A GB 409245A GB 33985/33 A GB33985/33 A GB 33985/33A GB 3398533 A GB3398533 A GB 3398533A GB 409245 A GB409245 A GB 409245A
Authority
GB
United Kingdom
Prior art keywords
spindle
ball
microscope
disc
knob
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
GB33985/33A
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.)
Carl Zeiss AG
Original Assignee
Carl Zeiss AG
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 Carl Zeiss AG filed Critical Carl Zeiss AG
Publication of GB409245A publication Critical patent/GB409245A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/24—Base structure
    • G02B21/241—Devices for focusing

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microscoopes, Condenser (AREA)

Abstract

409,245. Microscopes. ZEISS, C., [Firm of], Carl-Zeiss-Strasse, Jena, Germany. Dec. 4, 1933, No. 33985. Convention date, Dec. 6, 1932. [Class 97 (i).] In a fine adjustment mechanism for focusing a microscope, the operating knob is connected to the focusing spindle by means of a clutch which automatically disengages when any abnormal resistance to the rotation of the spindle is encountered, e.g. by the microscope objective coming into contact with the slide. In the form shown in Fig. 1, the knob f is formed with a cylindrical recess g containing a spring i and a ball h. The ball normally projects from the aperture and engages a bore e of smaller diameter than the ball, in a disc c secured to the spindle b. When undue resistance is encountered the ball rides over the disc c and is pressed into its recess against the spring i. In another form, Fig. 3, a sleeve o secured to the spindle k carries a radiallyprojecting pin p, the cylindrical surface of which bears in a notch v formed in a resilient disc t carried by the knob m.
GB33985/33A 1932-12-06 1933-12-04 Improvements in mechanisms for the fine focusing adjustment of the tube of a microscope Expired GB409245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE409245X 1932-12-06

Publications (1)

Publication Number Publication Date
GB409245A true GB409245A (en) 1934-04-26

Family

ID=6422395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33985/33A Expired GB409245A (en) 1932-12-06 1933-12-04 Improvements in mechanisms for the fine focusing adjustment of the tube of a microscope

Country Status (1)

Country Link
GB (1) GB409245A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544371A (en) * 1947-12-12 1951-03-06 Fed Mfg & Engineering Corp Microscope with frictional vernier drive
US3019707A (en) * 1959-05-13 1962-02-06 Bausch & Lomb Fine adjustment mechanism for microscopes
US3451739A (en) * 1966-10-25 1969-06-24 Swift Instr Inc Adjustable friction slip drive for microscopes
US5654823A (en) * 1994-12-12 1997-08-05 Nikon Corporation Microscope

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544371A (en) * 1947-12-12 1951-03-06 Fed Mfg & Engineering Corp Microscope with frictional vernier drive
US3019707A (en) * 1959-05-13 1962-02-06 Bausch & Lomb Fine adjustment mechanism for microscopes
US3451739A (en) * 1966-10-25 1969-06-24 Swift Instr Inc Adjustable friction slip drive for microscopes
US5654823A (en) * 1994-12-12 1997-08-05 Nikon Corporation Microscope

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