US2735519A - Frischmann - Google Patents

Frischmann Download PDF

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Publication number
US2735519A
US2735519A US2735519DA US2735519A US 2735519 A US2735519 A US 2735519A US 2735519D A US2735519D A US 2735519DA US 2735519 A US2735519 A US 2735519A
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Prior art keywords
rail
slot
dovetail
objective
movement
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Expired - Lifetime
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B21/00Microscopes
    • G02B21/24Base structure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B2200/00Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/30Dovetail-like connections
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/45Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45471Projection having movable connection between components thereof or variable configuration
    • Y10T24/45482Projection having movable connection between components thereof or variable configuration and operator therefor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/45Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45602Receiving member includes either movable connection between interlocking components or variable configuration cavity
    • Y10T24/45623Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor

Description

F 2 19 K. FRISCHMANN DOVETAIL CONNECTION FOR MICROSCOPES Filed Oct. 15, 1952 United States Patent O 2,735,519 DOVETAIL CONNECTION FOR MICROSCOPES Karl Frischmann, Wetzlar-Garbenheim, Germany, assignor to Ernst Leitz, G. m. b. H., Wetzlar, Germany, a corporation of Germany Application October 15, 1952, Serial No. 314,7 83 1 Claim. (Cl. 18936) The object of this invention is to provide novel supporting means for a microscope objective and other microscope parts which are detachably mounted upon the microscope stand by means of a dovetail connection in which the dovetail rail is slidably removed from the dovetail slot by a movement longitudinal of the connection and parallel to the optical axis of the objective.
Such an arrangement is objectionable because, for example, if more than one element is thus detachably supported, it is necessary to remove the last inserted element before the lowest one can be removed. Also, a detaching downward movement of such parts or of the objective may cause injury to the object under examination.
This invention provides a dovetail connection in which either the rail or the slot is divided into two opposed parts. At least one of these parts is movable in a direction normal to the direction of the detaching movement. Thus, in the one case, the dovetail rail may be operated so as to be removed sideways from the slot instead of by a sliding movement longitudinally of the slot. In the other case, the slot may be widened to permit such removing movement. In both cases, the objective is detached by a movement at a right angle to the optical axis. The principle of the invention is applicable to devices other than microscopes.
The accompanying drawing illustrates two examples of a dovetail connection for microscopes. Fig. 1 is a detail view in section, with parts removed, in which the dovetail rail is divided. Fig. 2 is a similar view in which the dovetail slot is divided.
In the drawing, Fig. 1, the objective 1 is supported in a carrier 2 which is formed with a dovetail guiding rail consisting of the fixed rail part 3 and the movable rail part 4. The latter is pivoted on a shaft 6 supported within the space in the carrier 2. The movable rail part 4 is normally pressed inwardly toward the part 3 by a spring 8. After the objective has been positioned on the stand, the part 4 is clamped within the dovetail slot 9 by a screw 7. The slot 9 is here formed in the stand 10.
In Fig. 2, the dovetail rail 15 is part of the objective carrier 11. The stand 12 is provided with a dovetail slot formed by the fixed part 13 and the movable part 14 pivoted upon a shaft 16. The part 14 is spring pressed ICC outwardly from the slot by the spring 18. The part 14 is clamped in slot forming position by the screw 17.
When the objective, or other part, is to be removed, the screws 7 and 17, respectively, are loosened, so that the objective carrier 2 and 11, respectively, can be detached by a movement at a right angle to the axis of the objective and another part, which has either the two-part rail in Fig. 1 or the integral rail in Fig. 2 may be attached. The inserted part is thereafter clamped in position by the screws.
In Fig. 1 the rail 3--4 can be pulled out of the slot 9 because the rail is narrower than the slot when the screw 7 is screwed outward. In Fig. 2 the integral rail 15 can be withdrawn from the slot 13-14, which is widened by the spring 18 when the screw 17 is loosened.
In both cases as shown in the drawing, the objective 1 is detached, not axially, but by a movement at a right angle to the optical axis.
I claim:
A dovetail connection for removably connecting one part to another part comprising an integral dovetail slot in the one part, a complementary dovetail rail in the other part consisting of a fixed rail portionprojecting from said other part for engagement with the one side of the said dovetail slot, an opening provided in said other part in substantial alinement with said integral dovetail slot in the one part, one side of said opening being formed by said fixed rail portion, a movable rail portion pivoted on said other part at a point spaced from said opening in substantial alinement therewith, said movable rail portion extending from said pivot through said opening into complementary rail forming relation with said fixed rail portion for engagement with the inside surface of the opposite side of said dovetail slot and to move laterally across said dovetail slot within said slot and said opening, a spring in said other part engaging said movable rail portion to move the same to vary the distance between said rail portions and a clamping screw in said other part extending into the said opening to engage the movable rail portion to clamp it in operative sliding relation with the said inside surface of the slot, said movable rail portion having a range of movement within the dovetail slot and said opening with respect to said integral rail portion enabling said dovetail rail to pass through the mouth of the said slot for separation of the said two parts.
References Cited in the file of this patent UNITED STATES PATENTS 1,397,696 Nelson Nov. 22, 1921 1,510,722 Tierney et a1 Oct. 7, 1924 1,849,305 Magarian Mar. 15, 1932 1,887,121 Dietzel Nov. 8, 1932 2,133,509 Hall et a1 Oct. 18, 1938 2,503,272 Jobert Apr. 11, 1950 FOREIGN PATENTS 528,621 France Aug. 22, 1921
US2735519D Frischmann Expired - Lifetime US2735519A (en)

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873496A (en) * 1956-02-13 1959-02-17 Edwin F Elms Fastener
US2985174A (en) * 1957-12-02 1961-05-23 Oravisual Company Inc Paper pad clamping fixture
US3270994A (en) * 1963-08-27 1966-09-06 Meopta Narodni Podnik Tripod base
US3529859A (en) * 1968-08-06 1970-09-22 Kohler General Inc Quickly releasable dovetail clamp
US3535817A (en) * 1966-02-08 1970-10-27 Artur Fischer Toy building kit with optical component
US3604668A (en) * 1969-06-12 1971-09-14 Karl Bernhardt Clamping mechanism for assisting in measuring machine quill travel
US3787132A (en) * 1970-04-07 1974-01-22 Williams Holdings Ltd Edward Clamping arrangement
US3917193A (en) * 1974-01-21 1975-11-04 Boeing Co Boundary layer control and anti-icing apparatus for an aircraft wing
US4725030A (en) * 1986-12-29 1988-02-16 Hospital Systems, Inc. Removable bracket for attachment to rail
US4744692A (en) * 1987-09-22 1988-05-17 The United States Of America As Represented By The United States Department Of Energy Split-tapered joint clamping device
US6079746A (en) * 1997-07-21 2000-06-27 Olsen; Fred Ski conversion apparatus
US6554235B1 (en) * 1999-10-29 2003-04-29 Force Et Forme Support post with adjustable accessory supports
US8667908B2 (en) 2010-06-02 2014-03-11 Steelcase Inc. Frame type table assemblies
US8689705B2 (en) 2010-06-02 2014-04-08 Steelcase, Inc. Reconfigurable table assemblies
US9185974B2 (en) 2010-06-02 2015-11-17 Steelcase Inc. Frame type workstation configurations
US9210999B2 (en) 2010-06-02 2015-12-15 Steelcase Inc. Frame type table assemblies
US10039374B2 (en) 2016-05-13 2018-08-07 Steelcase Inc. Multi-tiered workstation assembly
US10517392B2 (en) 2016-05-13 2019-12-31 Steelcase Inc. Multi-tiered workstation assembly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR528621A (en) * 1919-12-05 1921-11-15 Albert Joseph Pierre Monnier Removable assembly of a dovetail tenon in a trapezoidal mortise
US1397696A (en) * 1920-03-26 1921-11-22 Franz K Krag Drilling attachment for milling-machines
US1510722A (en) * 1922-03-16 1924-10-07 Eastman Kodak Co Lens carriage for photographic cameras
US1849305A (en) * 1929-09-27 1932-03-15 Central Scientific Co Optical bench
US1887121A (en) * 1929-02-21 1932-11-08 Zeiss Carl Fa Slide guide for the fine adjustment of microscopes
US2133509A (en) * 1936-07-08 1938-10-18 Bausch & Lomb Microscope
US2503272A (en) * 1944-05-20 1950-04-11 Arthur H Jobert Retracting slide for firearms

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR528621A (en) * 1919-12-05 1921-11-15 Albert Joseph Pierre Monnier Removable assembly of a dovetail tenon in a trapezoidal mortise
US1397696A (en) * 1920-03-26 1921-11-22 Franz K Krag Drilling attachment for milling-machines
US1510722A (en) * 1922-03-16 1924-10-07 Eastman Kodak Co Lens carriage for photographic cameras
US1887121A (en) * 1929-02-21 1932-11-08 Zeiss Carl Fa Slide guide for the fine adjustment of microscopes
US1849305A (en) * 1929-09-27 1932-03-15 Central Scientific Co Optical bench
US2133509A (en) * 1936-07-08 1938-10-18 Bausch & Lomb Microscope
US2503272A (en) * 1944-05-20 1950-04-11 Arthur H Jobert Retracting slide for firearms

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873496A (en) * 1956-02-13 1959-02-17 Edwin F Elms Fastener
US2985174A (en) * 1957-12-02 1961-05-23 Oravisual Company Inc Paper pad clamping fixture
US3270994A (en) * 1963-08-27 1966-09-06 Meopta Narodni Podnik Tripod base
US3535817A (en) * 1966-02-08 1970-10-27 Artur Fischer Toy building kit with optical component
US3529859A (en) * 1968-08-06 1970-09-22 Kohler General Inc Quickly releasable dovetail clamp
US3604668A (en) * 1969-06-12 1971-09-14 Karl Bernhardt Clamping mechanism for assisting in measuring machine quill travel
US3787132A (en) * 1970-04-07 1974-01-22 Williams Holdings Ltd Edward Clamping arrangement
US3917193A (en) * 1974-01-21 1975-11-04 Boeing Co Boundary layer control and anti-icing apparatus for an aircraft wing
US4725030A (en) * 1986-12-29 1988-02-16 Hospital Systems, Inc. Removable bracket for attachment to rail
US4744692A (en) * 1987-09-22 1988-05-17 The United States Of America As Represented By The United States Department Of Energy Split-tapered joint clamping device
US6079746A (en) * 1997-07-21 2000-06-27 Olsen; Fred Ski conversion apparatus
US6554235B1 (en) * 1999-10-29 2003-04-29 Force Et Forme Support post with adjustable accessory supports
US8667908B2 (en) 2010-06-02 2014-03-11 Steelcase Inc. Frame type table assemblies
US8689705B2 (en) 2010-06-02 2014-04-08 Steelcase, Inc. Reconfigurable table assemblies
US9185974B2 (en) 2010-06-02 2015-11-17 Steelcase Inc. Frame type workstation configurations
US9210999B2 (en) 2010-06-02 2015-12-15 Steelcase Inc. Frame type table assemblies
US10681980B2 (en) 2010-06-02 2020-06-16 Steelcase Inc. Frame type workstation configurations
US10039374B2 (en) 2016-05-13 2018-08-07 Steelcase Inc. Multi-tiered workstation assembly
US10517392B2 (en) 2016-05-13 2019-12-31 Steelcase Inc. Multi-tiered workstation assembly

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