US3286536A - Driving mechanisms more particularly for the movement of picture films - Google Patents

Driving mechanisms more particularly for the movement of picture films Download PDF

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Publication number
US3286536A
US3286536A US349024A US34902464A US3286536A US 3286536 A US3286536 A US 3286536A US 349024 A US349024 A US 349024A US 34902464 A US34902464 A US 34902464A US 3286536 A US3286536 A US 3286536A
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US
United States
Prior art keywords
disc
shaft
pin
drive shaft
crank
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
US349024A
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English (en)
Inventor
Hallmann Johan Paul Heinrich
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.)
US Philips Corp
North American Philips Co Inc
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US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
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Publication of US3286536A publication Critical patent/US3286536A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G03B1/00—Film strip handling
    • G03B1/18—Moving film strip by means which act on the film between the ends thereof
    • G03B1/38—Moving film strip by means which act on the film between the ends thereof embodying Geneva motion, e.g. Maltese-cross gearing
    • 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
    • F16H—GEARING
    • F16H27/00—Step-by-step mechanisms without freewheel members, e.g. Geneva drives
    • F16H27/04—Step-by-step mechanisms without freewheel members, e.g. Geneva drives for converting continuous rotation into a step-by-step rotary movement
    • F16H27/06—Mechanisms with driving pins in driven slots, e.g. Geneva drives
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/1836—Rotary to rotary
    • Y10T74/18408—Cranks, slidable 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18528—Rotary to intermittent unidirectional motion
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies
    • Y10T74/19879—Geneva

Definitions

  • This invention relates to driving mechanisms, more particularly for the movement of picture films, in which a uniformly-rotating driving shaft intermittently drives through a Maltese cross or a Geneva movement a second shaft through a first component, rigidly connected to the driving shaft, and a second component which is rotatable about a shaft positioned eccentrically relative to the driving shaft, which two components are in driving connection with each other by means of a slotted-link mechanism.
  • slotted-link mechanism is to be understood herein to mean a mechanism comprising two parallel shafts one of which carries a crank Whose pin coacts with a slot of a component seated on the other shaft in such manner that the shafts can drive each other.
  • Driving mechanisms of the kind referred to are used in those cases where the aim is to shorten as much as possible the period which is required to rotate the shaft to be driven intermittently through a certain angle and to lengthen the period in which said shaft is stationary, the so-called accelerated Maltese cross drive. They are used, for example, in picture film projectors in which it is important to reduce as far as possible the dark period of the film in order to minimize the light loss through the darkening of the projection screen required during this period.
  • One advantageous embodiment is characterized in that the crank coacting with the Maltese cross is seated on a shaft located in line with the driving shaft or on the driving shaft itself. This is possible due to the freedom in the choice of the positions of the shafts and affords the advantage that the structure can be incorporated in a mechanism provided with a nonaccelerated Maltese cross drive, without the positioning of the shafts having to be modified.
  • a very compact structure which envisages the same advantage is obtained by another advantageous embodiment which is characterized in that the second slotted-link mechanism is substantially situated, as viewed in the axial direction, between the two boundary surfaces of the first component.
  • a very compact structure is also obtained by journalling the second component on an eccentric which cannot rotate relative to a frame and which has a bore for journalling the driving shaft.
  • FIGURE 1 shows a schematic diagram of the driving mechanism according to the invention
  • FIGURE 2 shows a diagram thereof and FIGURE 3 is a sectional view of one advantageous embodiment of the driving mechanism according to the invention.
  • FIGURE 1 shows a uniformly-rotating driving shaft 1 and an intermittently driven rotary shaft 2 on which, by way of example, a sprocket 3 for a picture film is shown.
  • the shaft 2 is driven by a pin 4 on a disc 5, which pin operatesv a Maltese cross or Geneva member 6, rigidly seated on shaft 2, once during each revolution of the shaft 1, whereby the shaft 2 is rotated through a certain constant angle.
  • a disc 7 having a slot 8 is immovably fitted on the shaft 1.
  • a disc 9 is positioned eccentrically relative to the shaft 1 and so connected to a fixed point of the construction that it cannot rotate.
  • the disc 9 having a center 10 can also serve as a bearing for the shaft 1.
  • Rotatable about the disc 9 is another disc 11 having a pin 12 and a slot 13.
  • the pin 12 coacts with the slot 8 and constitutes therewith a first slotted-link mechanism.
  • the slot 13 coacts with a pin 14 on disc 5 and constitutes therewith a second slotted-link mechanism.
  • the shafts 1 and 2 are journalled in a housing 15.
  • the shaft 1 is uniformly driven by a disc 16.
  • Seated on the shaft 2 is a Maltese cross 6 which is driven by the pin 4 on the disc 5. This disc can rotate freely on the shift 1.
  • the component 7 having a slot in the form of a slot 8 is rigidily connected to the shaft 1.
  • An eccentric 9 is rigidly connected to the housing 15 by means of pins 17 and has a bore which serves as a bearing for the shaft 1 and also has a bearing for the disc 11, which can thus freely rotate eccentrically relative to the shaft 1.
  • Rigidly connected to the disc 11 is a pin 12 which coacts with the slot 8 of the component 7.
  • the disc 11 also has a slot formed by radial sliding surfaces 13, into which a pin 14 on the disc 5 can slide.
  • the sliding surfaces 13 and the active portion of the pin 14, which form together the second slotted-link mechanism, are situated, as viewed in the axial direction, between the boundary surfaces of the component 7, resulting in a very compact structure of the assembly.
  • the boundary surfaces are indicated 3 by a dot-and-dash line in FIGURE 3 and provided with the reference numerals 18 and 19.
  • An intermittent film drive having a film sprocket comprising a continuously driven rotatable drive shaft, a Geneva gear provided with an intermittently driven shaft, said film sprocket mounted on said latter shaft, a crank rotatable about said drive shaft provided with a pin engaging in the slots of said Geneva gear for inter- .mittently rotating the latter, a first disc rigidly connected to said drive shaft, a second disc rotatable about said drive shaft and mounted eccentrically relative thereto, said first disc being provided with a first peripheral slot,
  • An intermittent film drive having a film sprocket as claimed in claim 1 further comprising a fixed eccentric, said drive shaft journalled in said eccentric, and .said second disc journalled on said eccentric and being rotatable thereabout.
  • An intermittent film drive having a film sprocket as claimed in claim 1 wherein said crank is rotatably mounted on said drive shaft.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
  • Gear Transmission (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
US349024A 1963-03-07 1964-03-03 Driving mechanisms more particularly for the movement of picture films Expired - Lifetime US3286536A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL289946 1963-03-07

Publications (1)

Publication Number Publication Date
US3286536A true US3286536A (en) 1966-11-22

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ID=19754497

Family Applications (1)

Application Number Title Priority Date Filing Date
US349024A Expired - Lifetime US3286536A (en) 1963-03-07 1964-03-03 Driving mechanisms more particularly for the movement of picture films

Country Status (7)

Country Link
US (1) US3286536A (enrdf_load_stackoverflow)
AT (1) AT256634B (enrdf_load_stackoverflow)
CH (1) CH417322A (enrdf_load_stackoverflow)
DK (1) DK114043B (enrdf_load_stackoverflow)
ES (1) ES297250A1 (enrdf_load_stackoverflow)
GB (1) GB1028451A (enrdf_load_stackoverflow)
SE (1) SE311473B (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354740A (en) * 1966-04-11 1967-11-28 Beckman Instruments Inc Conveyor drive and indexing mechanism for liquid scintillation spectrometers
US3525267A (en) * 1966-09-01 1970-08-25 Detlef Hofmann Crank drive
US3541869A (en) * 1967-12-22 1970-11-24 Schweizerische Ind G Device for driving a rotating part at an angular velocity that varies during one complete revolution
US3745865A (en) * 1971-08-09 1973-07-17 Harris Intertype Corp Cyclic variable speed drive
US3753300A (en) * 1972-07-17 1973-08-21 K Mosley Orrery projection and drive
US3805628A (en) * 1972-10-02 1974-04-23 Beasley French & Co Ltd Transmissions
US3874098A (en) * 1973-10-15 1975-04-01 Kenneth C Mosley Heliocentric-geocentric orrery projector
DE2836451A1 (de) * 1978-08-21 1980-02-28 Bernd Lollert Ungleichfoermigkeitsgetriebe
FR2533652A1 (fr) * 1982-09-24 1984-03-30 Showa Mfg Mecanisme de commande a distance de force d'amortissement pour des amortisseurs hydrauliques
US4863262A (en) * 1988-01-06 1989-09-05 Optical Radiation Corporation Motion picture projector with reduced picture jump
US5388470A (en) * 1993-06-28 1995-02-14 Marsh, Jr.; Richard O. Centrifugal force drive machine
US5697733A (en) * 1996-01-11 1997-12-16 Marsh, Jr.; Richard O. Centrifugal force vibration apparatus and system
US5980412A (en) * 1997-11-15 1999-11-09 Smith; Frank D. Cam follower automatic torque converter transmission
US6183087B1 (en) 1999-06-11 2001-02-06 Eastman Kodak Company Geneva mechanism and motion picture projector using same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3770762D1 (de) * 1986-09-29 1991-07-18 Innolab Keramik-drehsteuerungsvorrichtung mit unterbrochener drehsteuerung fuer brennkraftmaschine, kolbenkompressor, oder pulso-brennkammer.
FR2608210A2 (fr) * 1986-09-29 1988-06-17 Innolab Dispositif de distribution rotatif a rotation discontinue par croix de malte comportant des moyens pour faire roter le doigt de la croix de malte

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2169567A (en) * 1937-03-30 1939-08-15 Leitz Ernst Gmbh Geneva movement for motion picture projection
DE722526C (de) * 1938-06-18 1942-07-11 Licht Und Kraft Ag Getriebe
US2741169A (en) * 1951-06-26 1956-04-10 Rollei Werke Franke Heidecke Film advancing mechanism for stereo roll film cameras

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2169567A (en) * 1937-03-30 1939-08-15 Leitz Ernst Gmbh Geneva movement for motion picture projection
DE722526C (de) * 1938-06-18 1942-07-11 Licht Und Kraft Ag Getriebe
US2741169A (en) * 1951-06-26 1956-04-10 Rollei Werke Franke Heidecke Film advancing mechanism for stereo roll film cameras

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354740A (en) * 1966-04-11 1967-11-28 Beckman Instruments Inc Conveyor drive and indexing mechanism for liquid scintillation spectrometers
US3525267A (en) * 1966-09-01 1970-08-25 Detlef Hofmann Crank drive
US3541869A (en) * 1967-12-22 1970-11-24 Schweizerische Ind G Device for driving a rotating part at an angular velocity that varies during one complete revolution
US3745865A (en) * 1971-08-09 1973-07-17 Harris Intertype Corp Cyclic variable speed drive
US3753300A (en) * 1972-07-17 1973-08-21 K Mosley Orrery projection and drive
US3805628A (en) * 1972-10-02 1974-04-23 Beasley French & Co Ltd Transmissions
US3874098A (en) * 1973-10-15 1975-04-01 Kenneth C Mosley Heliocentric-geocentric orrery projector
DE2836451A1 (de) * 1978-08-21 1980-02-28 Bernd Lollert Ungleichfoermigkeitsgetriebe
FR2533652A1 (fr) * 1982-09-24 1984-03-30 Showa Mfg Mecanisme de commande a distance de force d'amortissement pour des amortisseurs hydrauliques
US4579199A (en) * 1982-09-24 1986-04-01 Kabushiki Kaisha Showa Seisakusho Remote operation type damping force control mechanism for hydraulic damper
US4863262A (en) * 1988-01-06 1989-09-05 Optical Radiation Corporation Motion picture projector with reduced picture jump
US5388470A (en) * 1993-06-28 1995-02-14 Marsh, Jr.; Richard O. Centrifugal force drive machine
US5697733A (en) * 1996-01-11 1997-12-16 Marsh, Jr.; Richard O. Centrifugal force vibration apparatus and system
US5980412A (en) * 1997-11-15 1999-11-09 Smith; Frank D. Cam follower automatic torque converter transmission
US6183087B1 (en) 1999-06-11 2001-02-06 Eastman Kodak Company Geneva mechanism and motion picture projector using same

Also Published As

Publication number Publication date
GB1028451A (en) 1966-05-04
ES297250A1 (es) 1964-08-16
SE311473B (enrdf_load_stackoverflow) 1969-06-09
AT256634B (de) 1967-08-25
CH417322A (de) 1966-07-15
DK114043B (da) 1969-05-19

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