US3603495A - Film feeding equipment - Google Patents

Film feeding equipment Download PDF

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Publication number
US3603495A
US3603495A US790044A US3603495DA US3603495A US 3603495 A US3603495 A US 3603495A US 790044 A US790044 A US 790044A US 3603495D A US3603495D A US 3603495DA US 3603495 A US3603495 A US 3603495A
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US
United States
Prior art keywords
motors
input
movement
output
outputs
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
US790044A
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English (en)
Inventor
Bretislav Stejskal
Vladimir Stepan
Petr Vlach
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.)
Tesla AS
Original Assignee
Tesla AS
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 Tesla AS filed Critical Tesla AS
Application granted granted Critical
Publication of US3603495A publication Critical patent/US3603495A/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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/28—Locating light-sensitive material within camera
    • G03B17/30—Locating spools or other rotatable holders of coiled film
    • G03B17/305—Locating spools or other rotatable holders of coiled film for roll film cameras

Definitions

  • a first forward-movement stopping photoelectric sensor 9 and a first backward-movement stopping photoelectric sensor it) are located to either side of and near the film gate.
  • a second forward-movement stopping photoelectric sensor Ill and a second backward-movement stopping photoelectric sensor 12 is located to either side of and near display screen.
  • the photoelectric sensors are arranged to sense and produce a signal indicative of prearranged and located indicia or synchronizing marks on the film strip and to produce a resultant electric signal.
  • the synchronizing marks can be transparent code fields formed by nontransparent longitudinal stripe marked on the film strip (see FIG. 2a), nontransparent transverse stripes located between the frames together with a transparent longitudinal stripe (indicated by dashed lines) (see FIG. 2b), or transparent transverse stripes between the frames together with a nontransparent longitudinal stripe (indicated by dashed lines on a negative film in FIG. 20).
  • the bistable circuits l7 and i8 can be triggered to return to their quiescent stable state by the application of a stopping signal applied through the forwardmovement stop signalling path 24 or the backwardmovement stop signalling path 25 connected to the photoelectric sensors 9 and 10, respectively (or 11 and 12, respectively).
  • the motor control device 6 further includes a forward movement monostable timing circuit 19 and the backwardmovement monostable timing circuit 20 which are each operable for a predetermined period t.
  • the timing circuits 19 and 20 are triggered instantaneously with the return of the forwardfmovement bistable circuit 17 or the backward-movement bistable circuit 18 to their quiescent stable state by a signal appearing on the second outputs of each of the bistable circuits 17 and 18 respectively.
  • the reversing motors 4 and 5 can be thus switched to carry out their working functions as required, by means of a switching device 21 deriving signals from either the bistable circuits l7 and 18, or the timing circuits l9 and 20.
  • the braking of the backward movement of the film strip is carried out in a similar way as the braking of the forward movement.
  • the backwardmovement control switch 33, the backwardmovement auxiliary switch 39 and the backwardmovement main switch llll are successively opened and the forward-movement output 31 is simultaneously placed into operation for a predetermined period t resulting in the connection of the two reversing motors d and 5 positive voltage terminal (+U)
  • these switches are opened and the forward-movement brake breaker 35 and the backwardmovement brake breaker 40 are closed resulting in the closing forward-movement brake main switch. 37 and the backwardmovement brake main switch 4L2.
  • said photoelectric sensing means comprises a pair of sensors respectively operable in response to the forward and backward movement of said film strip, to provide a respective signal effecting the corresponding movement of said motors.
  • the first input of said switching device being connected to the first output of the first bistable control circuit
  • the second input of said switching device being connected to the first output of the second bistable control device

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Control Of Multiple Motors (AREA)
  • Details Of Cameras Including Film Mechanisms (AREA)
  • Advancing Webs (AREA)
US790044A 1968-01-12 1969-01-09 Film feeding equipment Expired - Lifetime US3603495A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CS24368 1968-01-12
CS24268 1968-01-12

Publications (1)

Publication Number Publication Date
US3603495A true US3603495A (en) 1971-09-07

Family

ID=25745261

Family Applications (1)

Application Number Title Priority Date Filing Date
US790044A Expired - Lifetime US3603495A (en) 1968-01-12 1969-01-09 Film feeding equipment

Country Status (8)

Country Link
US (1) US3603495A (xx)
AT (1) AT288865B (xx)
CH (1) CH490685A (xx)
DE (1) DE1901026A1 (xx)
FR (1) FR2000209A1 (xx)
GB (1) GB1198040A (xx)
NL (1) NL6900485A (xx)
SE (1) SE335673B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3722118A1 (de) * 1987-07-03 1989-01-12 Brueggemann L Kg Selbstverloeschende thermoplastische massen aus polykondensationsprodukten
US10998730B1 (en) 2019-04-26 2021-05-04 NeoVolta, Inc. Adaptive solar power battery storage system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371701A1 (fr) * 1976-11-22 1978-06-16 Field Roger Procede et dispositif d'entrainement de film

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115314A (en) * 1961-02-01 1963-12-24 Litton Systems Inc Tape handling apparatus
US3248029A (en) * 1963-12-20 1966-04-26 Ibm Non-sprocketed microfilm stepping device
US3251048A (en) * 1962-02-28 1966-05-10 Minnesota Mining & Mfg Magnetic tape transport system
US3339815A (en) * 1965-11-09 1967-09-05 Information Int Inc Film indexing method and apparatus for high speed film reading
US3366300A (en) * 1966-03-11 1968-01-30 Fujitsu Ltd Single capstan tape feeding mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115314A (en) * 1961-02-01 1963-12-24 Litton Systems Inc Tape handling apparatus
US3251048A (en) * 1962-02-28 1966-05-10 Minnesota Mining & Mfg Magnetic tape transport system
US3248029A (en) * 1963-12-20 1966-04-26 Ibm Non-sprocketed microfilm stepping device
US3339815A (en) * 1965-11-09 1967-09-05 Information Int Inc Film indexing method and apparatus for high speed film reading
US3366300A (en) * 1966-03-11 1968-01-30 Fujitsu Ltd Single capstan tape feeding mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3722118A1 (de) * 1987-07-03 1989-01-12 Brueggemann L Kg Selbstverloeschende thermoplastische massen aus polykondensationsprodukten
DE3722118C2 (xx) * 1987-07-03 1992-01-02 L. Brueggemann Kg, 7100 Heilbronn, De
US10998730B1 (en) 2019-04-26 2021-05-04 NeoVolta, Inc. Adaptive solar power battery storage system
US11605952B1 (en) 2019-04-26 2023-03-14 NeoVolta, Inc. Adaptive solar power battery storage system

Also Published As

Publication number Publication date
DE1901026A1 (de) 1969-07-31
GB1198040A (en) 1970-07-08
NL6900485A (xx) 1969-07-15
AT288865B (de) 1971-03-25
CH490685A (de) 1970-05-15
SE335673B (xx) 1971-06-01
FR2000209A1 (xx) 1969-08-29

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