US3784135A - Elevation mechanism - Google Patents

Elevation mechanism Download PDF

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Publication number
US3784135A
US3784135A US00232382A US3784135DA US3784135A US 3784135 A US3784135 A US 3784135A US 00232382 A US00232382 A US 00232382A US 3784135D A US3784135D A US 3784135DA US 3784135 A US3784135 A US 3784135A
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US
United States
Prior art keywords
wall
detent
housing
base
elevation
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
US00232382A
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English (en)
Inventor
W Owen
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Application granted granted Critical
Publication of US3784135A publication Critical patent/US3784135A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10—Telescoping systems
    • F16B7/105—Telescoping systems locking in discrete positions, e.g. in extreme extended position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen
    • G03B21/11—Projectors with built-in or built-on screen for microfilm reading
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/02—Locking means
    • F16M2200/021—Locking means for rotational movement
    • F16M2200/024—Locking means for rotational movement by positive interaction, e.g. male-female connections
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S248/00—Supports
    • Y10S248/917—Video display screen support
    • Y10S248/919—Adjustably orientable video screen support
    • Y10S248/922—Angular
    • Y10S248/923—Tilting

Definitions

  • Elevation mechanisms for substantially portable apparatus such as motion picture or slide projectors, microfilm readers and the like have generally had a number of disadvantages.
  • the rack and pinion system comprised a large number of parts and therefore contributed to undesirable complexity and expense of the elevation mechanism.
  • this type of elevation mechanism occupied a substantial amount of space in the apparatus which could be efficiently used for other purposes or eliminated to make the apparatus more compact.
  • the elevation mechanism comprises a minimum number of parts but is disadvantageous in that only a limited elevation angle is provided.
  • an elevation mechanism for apparatus such as motion picture film an slide projectors, microfilm readers and the like comprising an operating member having a detent finger mounted on a rotatable main housing of the apparatus in cooperation with surface indentations on a base member to which the housing is pivoted.
  • the operating member includes an angled detent finger flanked by spring members unitarily projecting downwardly from a manually operable member protruding through a slot lit in the housing.
  • the base of the apparatus is provided with a series vertically disposed openings or indenta tions into one of which the detent finger is adapted to project.
  • a protruberance on the housing is spaced a slight distance from the manually operable member and upon movement of the manually operable member toward the protruberance the detent finger is moved out of engagement with the indentation in the base to permit adjustment of the housing to another angle.
  • FIG. 1 is a partially sectional elevational view of the elevation mechanism of the present invention as used in a microfilm reader;
  • FIG. 2 is an exploded perspective view of the mechanism of FIG. 1;
  • FIG. 3 is a partially sectional elevational view showing the operation of the mechanism of FIG. 1.
  • microfilm reader 10 comprises upper housing 12 mounted on lower housing 14 which in turn is pivotally mounted on base 16 as at bearing 18.
  • the basic components of the projection system of the reader 10 are shown schematically and include light source 20, condenser lens 22, projection lens 24, mirror 26, front projection screen 28 and a viewing opening at the front of housing 12 including ambient light filter 30.
  • a strip or sheet of microfilm containing a plurality of microimages is positioned relative to the optic axis formed by condenser lens 22 and projection lens 24 by means of a carriage 32 suitably mounted for movement relative to projection axis 34 in slot 36 of lower housing 14 of reader 10.
  • Elevation mechanism 38 includes detent means 40 on lower housing 14 and cooperating detent means 42 on base 16.
  • detent means 42 includes a series of detent openings 43 in front wall 44 of base 16 which is also provided with side walls 46 and 48 intersecting with front wall 44.
  • Detent openings 43 in wall 44 are vertically aligned and have horizontal lands 50 projecting rearwardly from openings 43.
  • Detent means 40 provided on housing 14 includes an operational member 52 supported on front wall 54 of lower housing 14.
  • Member 52 includes horizontally disposed manually operable portion 56, angled detent finger 58 and spring members 60 and 62 flanking detent finger 58.
  • Members 60 and 62 and finger 58 are preferably unitary with portion 56 and depend downwardly therefrom.
  • Member 52 is also provided with a retaining element 64 also preferably unitary with portion 56.
  • portion 56 of member 52 projects through a slot 66 in wall 54.
  • Spring members 60 and 62 substantially bear against inner surface 68 of wall 54 and the free end of retaining element 64 substantially bears against the outer surface 70 of wall 54, members 60 and 62 and element 64 thus securely holding member 52 on wall 54.
  • Wall 54 is also provided with protruberance 72 extending substantially horizontally from surface 70 of wall 54. Protruberance 72 is spaced a small distance from portion 56 so that manual pressure may be applied between protruberance 72 and portion 56 to rotate detent member 58 out of engagement with detent openings 43 in wall 44 of base 16.
  • member 52 is of springy material such as spring metal, plastic or the like
  • spring members 60 and 62 will bias detent finger 58 into engagement with a detent opening 43.
  • the angle of elevation at which housing 12 is to be set for the convenience of an operator of reader will determine the particular detent opening 43 with which detent finger 58 is engaged.
  • finger 58 is inserted into the lower most opening 43a and housing 12 is disposed at its lowest position. If the operator desires to change the angle of elevation of housing 12 he would apply manual pressure to portion 56 of member 52 in the direction of protruberance 72. This may be accomplished for example by grasping protruberance 72 and portion 56 between two fingers and squeezing.
  • detent finger 58 will pivot into engagement with the nearest opening 43 thus preventing sudden jarring to the projection components of the reader 10.
  • elevation mechanism 38 has been shown and described as including an operating member 52 having a single detent finger 58 adapted to engage a single opening 43, it will be understood that member 52 may include a two or more detent fingers adapted to engage a like number of openings 43 for each angle of elevation. it will also be understood that the number of elevation angle setting openings and the vertical spacing between said openings may be varied and that such openings may be indentation molded or otherwise formed in plastic or the like; Other forms of detent means are also considered to be within the scope of the present invention.
  • a microfilm viewer including a base having a first wall and a housing pivotally connected to said base, said housing having a second wall spaced from said first wall, an elevation mechanism for adjusting the angle of elevation of said housing relative to said base and for thereby adjusting the angle of viewing of said viewer, comprising:
  • an operating member carried by said second wall of said housing said operating member including: 1 a substantially horizontal member having a manually manipulable portion extending through said second wall;
  • c means on said second wall cooperating with said manually manipulable portion of said operating member for effecting manual manipulation of said operating member to selectively move said detent member into and out of engagement with a selected one of said detent bearing surfaces to thereby selectively adjust the angle of elevation of said housing relative to said base.
  • said means for effecting includes a protmberance on said second wall, spaced from said manipulable portion of said operating member.
  • said spring member means includes first and second downwardly depending sinuously shaped spring elements respectively flanking said detent member.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Holders For Sensitive Materials And Originals (AREA)
  • Projection Apparatus (AREA)
US00232382A 1972-03-07 1972-03-07 Elevation mechanism Expired - Lifetime US3784135A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23238272A 1972-03-07 1972-03-07

Publications (1)

Publication Number Publication Date
US3784135A true US3784135A (en) 1974-01-08

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ID=22872866

Family Applications (1)

Application Number Title Priority Date Filing Date
US00232382A Expired - Lifetime US3784135A (en) 1972-03-07 1972-03-07 Elevation mechanism

Country Status (3)

Country Link
US (1) US3784135A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5256846Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1418421A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995797A (en) * 1973-12-10 1976-12-07 W. Vinten Limited Tilt mounting heads
US4471931A (en) * 1983-03-18 1984-09-18 Teletype Corporation CRT Monitor tilt mechanism
US4643382A (en) * 1984-02-29 1987-02-17 Nhk Spring Co. Limited Television stand having a tilt mechanism
US4726633A (en) * 1986-03-18 1988-02-23 Symbolics Inc. Tiltable monitor
US4769634A (en) * 1986-05-12 1988-09-06 Digital Equipment Corporation Tilt apparatus for cathode ray tube display
EP0288667A1 (en) * 1987-03-30 1988-11-02 International Business Machines Corporation Tilt mechanism for display terminal
US5067020A (en) * 1989-12-14 1991-11-19 Eastman Kodak Company Dual sensor film scanner having coupled optics and a video viewfinder
US5187743A (en) * 1992-01-22 1993-02-16 Northern Telecom Limited Telephone base with a display unit
US5342174A (en) * 1992-11-02 1994-08-30 Lasko Metal Products, Inc. Foot for fans
US5582386A (en) * 1993-11-29 1996-12-10 Telefonaktiebolaget Lm Ericsson Adjustable support arrangement
USD684982S1 (en) 2010-08-11 2013-06-25 Colebrook Bosson Saunders (Products) Limited Display support with indicator window
US9074721B2 (en) 2010-06-09 2015-07-07 Alex Lau Support system
US9316346B2 (en) 2010-06-09 2016-04-19 Colebrook Bosson Saunders (Products) Limited Support system
US9924795B2 (en) * 2014-01-15 2018-03-27 Siemens Aktiengesellschaft Foot platform and desk comprising a foot platform

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104102084B (zh) * 2013-04-09 2016-02-10 中强光电股份有限公司 投影机及其升降机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1401027A (en) * 1921-07-11 1921-12-20 Louis M Adler Piano-bench
US2243212A (en) * 1937-04-29 1941-05-27 Int Projector Corp Support for motion picture projection machines or the like
US2850081A (en) * 1957-03-01 1958-09-02 John P Dillon Leg rests
US2939659A (en) * 1952-07-17 1960-06-07 Elmer V Koskela Adjustable support for film strip and slide projector
US2944776A (en) * 1956-03-22 1960-07-12 Sylvania Electric Prod Projector tilt adjustment
US3148583A (en) * 1961-04-25 1964-09-15 G M Lab Inc Projector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1401027A (en) * 1921-07-11 1921-12-20 Louis M Adler Piano-bench
US2243212A (en) * 1937-04-29 1941-05-27 Int Projector Corp Support for motion picture projection machines or the like
US2939659A (en) * 1952-07-17 1960-06-07 Elmer V Koskela Adjustable support for film strip and slide projector
US2944776A (en) * 1956-03-22 1960-07-12 Sylvania Electric Prod Projector tilt adjustment
US2850081A (en) * 1957-03-01 1958-09-02 John P Dillon Leg rests
US3148583A (en) * 1961-04-25 1964-09-15 G M Lab Inc Projector

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995797A (en) * 1973-12-10 1976-12-07 W. Vinten Limited Tilt mounting heads
US4471931A (en) * 1983-03-18 1984-09-18 Teletype Corporation CRT Monitor tilt mechanism
US4643382A (en) * 1984-02-29 1987-02-17 Nhk Spring Co. Limited Television stand having a tilt mechanism
US4706920A (en) * 1984-02-29 1987-11-17 Nhk Spring Co. Limited Television stand having a tilt mechanism
US4726633A (en) * 1986-03-18 1988-02-23 Symbolics Inc. Tiltable monitor
US4769634A (en) * 1986-05-12 1988-09-06 Digital Equipment Corporation Tilt apparatus for cathode ray tube display
EP0288667A1 (en) * 1987-03-30 1988-11-02 International Business Machines Corporation Tilt mechanism for display terminal
US5067020A (en) * 1989-12-14 1991-11-19 Eastman Kodak Company Dual sensor film scanner having coupled optics and a video viewfinder
US5187743A (en) * 1992-01-22 1993-02-16 Northern Telecom Limited Telephone base with a display unit
US5342174A (en) * 1992-11-02 1994-08-30 Lasko Metal Products, Inc. Foot for fans
US5582386A (en) * 1993-11-29 1996-12-10 Telefonaktiebolaget Lm Ericsson Adjustable support arrangement
US9074721B2 (en) 2010-06-09 2015-07-07 Alex Lau Support system
US9316346B2 (en) 2010-06-09 2016-04-19 Colebrook Bosson Saunders (Products) Limited Support system
US9572269B2 (en) 2010-06-09 2017-02-14 Colebrook Bosson Saunders (Products) Limited Support system
USD684982S1 (en) 2010-08-11 2013-06-25 Colebrook Bosson Saunders (Products) Limited Display support with indicator window
USD1005984S1 (en) 2010-08-11 2023-11-28 Colebrook Bosson & Saunders (Products) Limited Indicator window for a display support
US9924795B2 (en) * 2014-01-15 2018-03-27 Siemens Aktiengesellschaft Foot platform and desk comprising a foot platform

Also Published As

Publication number Publication date
JPS5256846Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-12-22
JPS48111136U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-12-20
GB1418421A (en) 1975-12-17

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