US3724736A - Apparatus for the rapid, stepwise transport of a strip - Google Patents

Apparatus for the rapid, stepwise transport of a strip Download PDF

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Publication number
US3724736A
US3724736A US00166708A US3724736DA US3724736A US 3724736 A US3724736 A US 3724736A US 00166708 A US00166708 A US 00166708A US 3724736D A US3724736D A US 3724736DA US 3724736 A US3724736 A US 3724736A
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US
United States
Prior art keywords
strip
roller
yoke
tiltable
roll
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
US00166708A
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English (en)
Inventor
G Warnez
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.)
MICROFILM AUTOMATIC DATA
MICROFILM AUTOMATIC DATA PROCESSING FL Ets
Original Assignee
MICROFILM AUTOMATIC DATA
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 MICROFILM AUTOMATIC DATA filed Critical MICROFILM AUTOMATIC DATA
Application granted granted Critical
Publication of US3724736A publication Critical patent/US3724736A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/26—Driving record carriers by members acting directly or indirectly thereon
    • G11B15/28—Driving record carriers by members acting directly or indirectly thereon through rollers driving by frictional contact with the record carrier, e.g. capstan; Multiple arrangements of capstans or drums coupled to means for controlling the speed of the drive; Multiple capstan systems alternately engageable with record carrier to provide reversal
    • 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
    • G03B21/14—Details
    • G03B21/32—Details specially adapted for motion-picture projection
    • 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/62—Holders for the original
    • G03B27/6271—Holders for the original in enlargers
    • G03B27/6285—Handling strips
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/20—Moving record carrier backwards or forwards by finite amounts, i.e. backspacing, forward spacing

Definitions

  • ABSTRACT An apparatus for the rapid, stepwise transport of a Aug. 4, 1970 Sw1tzerland ..1l768/70 strip, comprising a y y g at one end a roller and at its other end a rapidly responsive braking ele- [52] 226/145 1 2216/39 ment. Means are provided for controlling the tilting of [51] lllt. Cl- ..B65
  • the present invention relates to a new and improved apparatus for the rapid, stepwise transport of a strip or the like.
  • the present invention therefore has for one of its primary objects to provide an apparatus for the rapid, stepwise transport of a strip or the like which fulfills these requirements in a most simple, efficient, and reliable fashion.
  • Another and more specific object of the present invention relates to an improved construction of apparatus for the rapid, stepwise transport of a strip rendering possible conveying of the strip with the greatest possible speed, while nonetheless ensuring for a precise and sudden stopping of such strip at the desired locations without subjecting it to the danger of rupture.
  • Still a further significant object of the present invention relates to an improved apparatus for the rapid, stepwise conveying of a strip in a safe and reliable fashion through the use of mechanism which is relatively simple in construction, extremely satisfactory in operation, not readily subject to breakdown and requires a minimum of servicing and maintenance.
  • a tiltable element constituted by a yoke
  • this yoke carries at one end a roller and at its other end a rapidly acting or responsive breaking element.
  • Means serve to control tilting of the yoke, and the yoke itself is arranged in such a way that in one of its tilted positions it transports the strip through the agency of the roller and in its other tilted position blocks the strip through the action of the braking element.
  • strip is used to denote typical forms of information carriers or carriers which can be impressed with varied types of information, such as film strips, magnetic tapes, bands or the like.
  • reference character B designates a strip which may be assumed to be either a film strip or a magnetic tape or band upon which there has been stored in succession information or data.
  • This information or data is to be read or played back, and for instance may be in the form of a sequence of microfilm pictures, each of which is provided with an identification code which can be read by a suitable reader during rapid transport speed of the film, and as soon as coincidence exists with the code of the microfilm picture desired to be retrieved stopping of the strip B is controlled in such a way that the desired microfilm picture or frame will be located at the correct position for reading or reproduction, for instance, will be situated along the optical axis of any suitable reading apparatus or copying apparatus.
  • Such apparatus has been schematically indicated by reference character 2 and its optical axis by reference character 3.
  • the strip B could be a virgin strip and intended to be impressed with the desired data and information by means of a suitable data applying apparatus again indicated by reference character 2, and the axis of which is again indicated by reference character 3.
  • the apparatus construction of this invention is quite capable of efiectively fulfilling these requirements.
  • the mechanism renderingsuch possible will be understood to embody a tiltable element, here shown in the form of a tiltable mounted yoke 4, the pivot or tilt axis 5 of which is defined by the shaft 5a of any suitable motor schematically indicated at reference character 5b.
  • This drive motor is advantageously of'the type having a very low mechanical time-constant and an equally low moment of inertia, for instance is an electric motor 5b. having a laminated winding and planar magnet air gap.
  • the motor 5b can be operatively connected with any suitable electronic control, schematically inicated at 30, by means of which the rotation of the motor 5b in the one or the other rotational sense can be controlled, depending upon whether the strip is to be transported or stopped, as will be more fully discussed hereinafter.
  • Any suitable electronic control schematically inicated at 30, by means of which the rotation of the motor 5b in the one or the other rotational sense can be controlled, depending upon whether the strip is to be transported or stopped, as will be more fully discussed hereinafter.
  • the specific construction of the motor is not crucial to the invention provided it fulfills the general mode of operation discussed above and more readily apparent from the description to follow.
  • Drive motors capable of imparting a selective tilting movement in one or the other direction to a tiltable element are well known in the art.
  • the tilt axis or pivot axis 5 of the yoke 4 extends transversely with respect to the lengthwise axis and the direction of transport of the strip B and its position is chosen such that even a very slight rocking or tilting of the yoke 4 causes the one or the other end thereof to come in contact with the strip B.
  • one end of the yoke 4 carries a small roller or roll 6 which is mounted to be freely rotatable at such end.
  • the other end of the yoke 4 carries a web 7, -which conceptially may also be viewed as constituting pins as considered shortlythe length of which essentially corresponds to the strip width and extendstransversely with regard to the lengthwise axis of such strip.
  • the web 7 by two or more pins or plugs. Now situated opposite such web 7 or opposite such pins or plugs and facing the opposite surface of the strip B there is located a stationary countersupport 8 formed by a mass having a high frictional resistance. As can be readily seen from the drawing the surface of the web 7 and which surface confronts the strip B is constructed to possess a convex configuration so that, when this surface 10 is pressed against the surface 9 of the countersupport 8, the strip B is not only clamped between the surfaces 9 and 10 but additionally is bent out of its own plane. This increases the braking and blocking action.
  • the countersupport 8 is formed of an elastic mass or material, the normally flat surface 9 of which, under the action of the pressure which is exerted thereagainst by the convex surface'l0 of the web 7, accommodates itself to the shape of the convex surface 10.
  • the countersupport 8 it is also possible right from the start to impart to the surface 9 of the countersupport 8 a concave shape which is contrary to the convex shape of the surface 10.
  • reference characters 11 and 12 designate two rollers having their respective axis in substantial parallelism with one another.
  • any suitable and therefore non-illustrated drive means are provided in order to drive these two rollers 11 and 12 with the same speed or with a slightly different speed, yet in opposite rotational directions, as indicated by the applied arrows visible in the drawing.
  • guide elements l3, l4, 15, 16 and 17 are provided for the strip B and serve to guide such strip along a predetermined path of travel between the surfaces 9 and 10 of the braking mechanism or device and also at the direct region of the surface of the roller 11 and past such roller 11, without there occurring any positive contact between the roller 11 and the strip B.
  • the roller or roll 12 is constructed such that it can come into contact with the roller 6 and place such into rotation when the tiltable element or yoke 4 is located in one of its tilted positions, as will now be described.
  • the roller 6 Since in this position the roller 6 is out of contact with the strip B the latter is actually suspended in the air current which has been generated by the rotation of the roller 11 and the roller 6 which bears against the roller 12.
  • this standstill position of the strip B it is thus possible to readily either store information or data upon the strip, in the event such is a virgin strip, or else it is possible to read-out or copy data and information which has been storedupon the strip, the relevant data or information then being positioned at the optical or working axis 3 of the relevant apparatus 2.
  • the apparatus 2 is located at the direct region of the web 7 which blocks the strip B, namely between the web 7 and the peripheral surface of the entrainment roller 1 1.
  • the yoke 4 presses the strip B through the agency of the roller 6 against the entrainment roller 11 and at the same time the web 7 is rocked out of the zone of contact with the strip B and therefore releases such for its transfer movement.
  • the strip B is then immediately transported owing to the rotation of the roll or roller 11. Since the roller 6 has been placed into rotation by the roller 12 up to the moment of tilting of the yoke 4, this roll 6 possesses a rotational speed at the moment where it presses the strip B against the roll 11, which essentially corresponds to the peripheral speed or velocity of the entrainment roll 11. This then assists in a rapid acceleration of the strip B in a most delicate manner.
  • rollers or rolls 11 and 12 can possess rather great peripheral velocities and the displacements of the roll 6 and the web 7 are maintained very small, in reality the maximum spacing between the roll 6 and the periphery of the strip driving and entrainment roll 11 can be maintained very small and only differs by a slight amount from the actual thickness of the strip B itself. Owing to these measures it is possible to transport, through the use of the illustrated apparatus of this invention, a film strip or a magnetic tape or the like, of relatively considerable length in a very short period of time.
  • An apparatus for the high speed, stepwise transport of a strip comprising a tiltable element having a pair of opposed ends a roller carried at one opposed end, and a rapidly acting braking element carried at the opposite end of said tiltable element, said tiltable element being a yoke, said tiltable element being selectively tiltable into one of two tilted positions, said tiltable element when assuming one of its tilted positions transporting the strip through the agency of said roller and when assuming its other tilted position blocking said'strip through the action of its braking element, said braking element embodies a web provided at one end of said yoke, a stationary countersupport cooperating with said web, said web pressing the strip against said stationary countersupport when said yoke has been rocked into said other tilted position, said countersupport and said web have respective cooperating surfaces configured to deform the strip out of its material plane when the strip is blocked by said braking element.
  • An apparatus for the high speed, stepwise transport of a strip comprising a tiltable element having a pair of opposed ends, a roller carried at one opposed end, and a rapidly acting braking element carried at the opposite end of said tiltable element, said tiltable element being a yoke, said tiltable element being selectively tiltable into one of two tilted positions, said tiltable element when assuming one of its tilted positions transporting the strip through the agency of said roller and when assuming its other tilted position blocking said strip through the action of its braking element, said roller mounted at said yoke being mounted to be freely rotatable at said one opposed end, a strip entraining and driving roll positioned to cooperate with said freely rotatably mounted roller, and wherein in said one tilted position of said yoke, which brings about transport of said strip, said freely rotatably mounted roller of said yoke urges such strip into contact with the peripheral surface of said entrainment and driving roll having a peripheral speed which substantially corresponds to the transport speed of the tilt

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Advancing Webs (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
US00166708A 1970-08-04 1971-07-28 Apparatus for the rapid, stepwise transport of a strip Expired - Lifetime US3724736A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1176870A CH523193A (fr) 1970-08-04 1970-08-04 Dispositif pour le déplacement rapide d'une bande pas à pas

Publications (1)

Publication Number Publication Date
US3724736A true US3724736A (en) 1973-04-03

Family

ID=4376686

Family Applications (1)

Application Number Title Priority Date Filing Date
US00166708A Expired - Lifetime US3724736A (en) 1970-08-04 1971-07-28 Apparatus for the rapid, stepwise transport of a strip

Country Status (4)

Country Link
US (1) US3724736A (fr)
CH (1) CH523193A (fr)
DE (1) DE2138536A1 (fr)
FR (1) FR2103873A5 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB725613A (en) * 1953-05-20 1955-03-09 British Tabulating Mach Co Ltd Improvements in or relating to data bearing tape feeding mechanisms
US2851676A (en) * 1956-03-01 1958-09-09 Vickers Electrical Co Ltd Driving apparatus for recording tapes
US3002671A (en) * 1957-11-22 1961-10-03 Ampex Magnetic tape apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB725613A (en) * 1953-05-20 1955-03-09 British Tabulating Mach Co Ltd Improvements in or relating to data bearing tape feeding mechanisms
US2851676A (en) * 1956-03-01 1958-09-09 Vickers Electrical Co Ltd Driving apparatus for recording tapes
US3002671A (en) * 1957-11-22 1961-10-03 Ampex Magnetic tape apparatus

Also Published As

Publication number Publication date
FR2103873A5 (fr) 1972-04-14
CH523193A (fr) 1972-05-31
DE2138536A1 (de) 1972-02-17

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