US3501111A - Web winding apparatus including means for preventing spill of the web - Google Patents

Web winding apparatus including means for preventing spill of the web Download PDF

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Publication number
US3501111A
US3501111A US742777A US3501111DA US3501111A US 3501111 A US3501111 A US 3501111A US 742777 A US742777 A US 742777A US 3501111D A US3501111D A US 3501111DA US 3501111 A US3501111 A US 3501111A
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United States
Prior art keywords
roller
web
rollers
drive
cam
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Expired - Lifetime
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US742777A
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English (en)
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Alex J Procop
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GAF Corp
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GAF Corp
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    • 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
    • G03B21/43—Driving mechanisms
    • 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
    • Y10T74/19172—Reversal of direction of power flow changes power transmission to alternate path

Definitions

  • WEB WINDING APPARATUS INCLUDING MEANS FOR PREVENTING SPILL OF THE WEB Filed July 5, 1968 4 Sheets-Sheet 4 FIG? 4 FIGS INVENTOR. 4 ALEX J. PROCOP BY MJM J #MQMMLP ATTORNEYS.
  • the moving picture projector has take-up and supply spindles. First and second rollers of diameters different from each other are shiftably mounted adjacent the takeup spindle for being brought into alternate driving engagement with the latter. Third and fourth rollers of diameters different from each other are shiftably mounted adjacent the supply spindle for alternate driving engagement with the same. A drive system including a series of belts is provided for rotating all of these rollers. A manually-operated linkage system is provided for selectively locating one of the rollers in driving engagement with the associated spindle for establishing one of a plurality of operational modes.
  • a braking or stopping action is achieved by operating the linkage system to bring the first and third rollers into engagement with respective take-up and supply spindles just prior to disengaging the drive to the rollers.
  • the direction of rotation of the first and third rollers is such that both the take-up and supply spindles are momentarily urged in a web-winding direction thereby to make the film taut and prevent spilling of the same from either the take-up or supply reels mounted on the spindles.
  • a primary object of the present invention is the provision of new and improved mechanism in a web-winding system wherein a pair of reels are alternately driven for winding the web on one reel from the other and vice versa, such mechanism causing both of the reels momentarily to be urged in a web-winding direction just prior to disengaging the drive to both of the reels, thereby to prevent spilling of the web from either of the reels.
  • Another object of the present invention is the provision of new and improved film handling mechanism in a moving picture projector, such mechanism preventing spill of the film from either of the take-up or supply reels upon actuation of the projector control knob to an off or stop position from either the fast forward or frewind modes of operation.
  • FIG. 5 is a similar view showing the parts in the position they occupy when the control knob is in the rewind position
  • a plate 14 is pivotally mounted on a pin 15, the latter being supported from the housing wall 12.
  • Plate 14 rotatably mounts a roller 16 which is arranged to have its periphery brought into driving engagement with the periphery of the spindle when the plate 14 is shifted in a clockwise direction about the pin 15.
  • the Plate 14 also rotatably mounts a small roller 18, this roller being arranged to have its periphery brought into driving engagement with the periphery of the spindle 10 when the plate 14 is shifted in a counterclockwise direction about the pin 15.
  • the roller 18 is mounted for rotation with a larger roller 19, the latter being driven from a belt 20 which is crossed upon itself and trained around a hub 16a integral with the roller 16.
  • the small roller 27 is mounted for rotation with a larger roller 29, the latter being engaged at its periphery by a belt 30 which is trained around a hub portion 26a integral with the roller 26.
  • a coil-tension spring 32 has one of its ends connected to a bracket 33 which is mounted by fastener 34; this fastener is mounted from the housing plate 12. The other end of the spring 32 is connected to the plate 23 for urging the latter in a clockwise direction about the pin 24.
  • the other end of the cross-arm 45 is pivotally engaged with the upper end of an arm 52, which arm is pivotally mounted about a pin 53.
  • This pin is mounted from the wall 12 of the projector. (The arm 52 is not engaged or connected with the pin 37 mounting the arm 36.)
  • the lower end of the arm 52 includes a cam-following surface 54.
  • the roller 16 has its periphery suitably grooved for receiving a belt 56 which is trained around a hub 57 integral with a gear wheel 58, which gear is rotatably mounted from the housing plate 12.
  • Wheel 58 is engaged by a belt 60 which also engages a hub 61 integral with a drive wheel 62, the latter being rotatably mounted from the plate 12,
  • Gear 58 includes a peripheral series of gear teeth 58a in meshing engagement with a peripheral series of teeth 64a on a gear wheel 64. This gear wheel,
  • a control member generally designated 92, has integral, coaxial, oppositely extending shaft portions 93, 94 which are suitably journaled thereby to mount the member 92 for rotation about a horizontal axis perpendicular to the plane of the projector wall 12.
  • the control member 92 is mounted such that the shaft portion 94 occupies a near position and the shaft portion 93 occupies a far position, this being with reference to FIG. 6.
  • the terminology near and far has reference to the near and far sides as seen looking at FIG. 6.
  • the cam 104 includes a central opening 105 having a flat side 105a thereby mounting the cam 104 on the control member 92 for being rotated thereby.
  • the far side of the cam includes an integral formation 106 having a cam surface 106a, the latter including a recessed portion 106b, With reference to FIGS. 6 and 10, it will be understood the formation 106 is engaged by the spring arm 80a, the latter riding on the cam surfaces 106a, 106b.
  • control member 92 includes an integral cam 108 adjacent the near side thereof. This cam engages a linkage member (not shown) for opening and closing the projector gate; for an understanding of this mechanism, reference should be had to the aforementioned application.
  • the control member 92 includes an integral cam formation 110 adjacent the far side from the cam formation 108.
  • the cam formation 110 includes a cam surface 110a; this cam surface is engaged by the cam follower 54 on the arm 52.
  • the control member 92 includes an integral cam formation 112 adjacent the far side of the cam formation 110.
  • the cam formation 112 is provided to operate a heat-shield member (not shown) which is used when the control knob is moved to a still position, this heat shield serving to prevent damage to the film when the projector is in this mode of operation.
  • FIGS. 7, 9 and 11 The several cams are illustrated in FIGS. 7, 9 and 11 in the position they occupy when the control knob on the extension 95 of the control member 92 is in an off position. These cams are rotatable through the following positions proceeding counterclockwise from the off position with reference to FIGS. 6, 7, 9 and 11: forward, still, reverse, stop, fast forward, stop and rewind. It will be understood these various positions are substantially uniformly, arcuately spaced from each other, i.e., approximately 45 apart. Both the fast forward and rewind control positions are located between stop and ofl or stop positions; this is of significance as the present invention has to do primarily with preventing spill of film from the reels as the control member is shifted from either the fast forward or rewind position to one of the off or stop positions.
  • the still position is established.
  • the linkage will be as shown in FIG. 1, except that the roller 70 will be cammed upwardly slightly to release tension on the belt 68 thereby to deactivate or disable the drive means to the various rollers.
  • the rollers 16, 26 are in respective engagement with the spindles 10, 22 thereby to hold both reels from rotating.
  • Rotation of the control member 92 through another 45 in a counterclockwise direction establishes the reverse position shown in FIG. 3.
  • the arm 36 is cammed to shift the roller 18 into driving engagement with the supply spindle 10 thereby to rotate the latter at a low rate of speed for winding film on the supply reel.
  • the arm 52 is also cammed to shift the cross-arm 45 to the right thereby to allow the spring 32 to disengage the roller 26 from the spindle 22.
  • the oppositely rotating rollers 16, 26 are brought into engagement with the respective spindles just prior to deactivating the drive through the various belts. This results in both the take-up and supply reels being momentarily urged in film-Winding directions thereby to prevent spilling of the film from either of the reels when switching from these fast modes of operation.
  • the rollers 16, 26 act as brakes thereby to restrain the spindles 10, 22 against movement when the drive through the various belts has been deactivated by slackening of the belt 68, the friction in the drive train from the gear 62 to the rollers 16, 26 providing adequate braking action.
  • said drive means including means for rotating said roller simultaneously with said one reel and in a direction such that the roller, when engaged with said spindle, will rotate the other reel in a direction for winding the web thereon;
  • control means associated with said shiftable means and said disabling means for sequentially operating the same to bring said roller into engagement with said spindle just prior to deactivating the drive means thereby momentarily to urge said other reel in a Web-winding direction.
  • each of said reels including a spindle
  • support means independently mounting each roller for movement into and out of driving engagement with the associated spindle
  • shiftable means connected to said support means and being adapted in a first mode to move said rollers alternately into engagement with respective spindles, said shiftable means being adapted in a second mode to move either of said rollers into engagement with the associated spindles such that both of the rollers are simultaneously engaged with respective spindles;
  • control means associated with said disabling means and said shiftable means for sequentially operating the same to establish the second mode of said shiftable means just prior to deactivating said drive means thereby momentarily to urge both of said reels in Web-winding directions.
  • said drive means includes a pair of wheels in peripheral engagement with each other for rotation in opposite directions, and a pair of belts connecting said wheels with said drive rollers, respectively.
  • control means associated with said shiftable means and said disabling means for sequentially operating the same to establish said second operational mode just prior to deactivating the drive means thereby momentarily to urge both of said reels in web-winding directions.
  • said drive means including first belt means for rotating said first and third rollers in opposite directions, and other belt means for rotating said second and fourth rollers in the same direction as said third roller;
  • said drive means also including selectively operable reversible input means for alternately rotating all of said rollers in clockwise and counterclockwise directions.
  • control means associated with said shiftable means and said disabling means for sequentially operating the same to establish said second operational mode 9 10 just prior to deactivating said input means thereby 2,920,148 1/1960 Munroe 179-1002 momentarily to urge both of said reels in opposite 2,946,531 7/1960 Hinchman 242-5512 directions at the same time.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Winding Of Webs (AREA)
  • Replacement Of Web Rolls (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US742777A 1968-07-05 1968-07-05 Web winding apparatus including means for preventing spill of the web Expired - Lifetime US3501111A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74277768A 1968-07-05 1968-07-05

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US3501111A true US3501111A (en) 1970-03-17

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US742777A Expired - Lifetime US3501111A (en) 1968-07-05 1968-07-05 Web winding apparatus including means for preventing spill of the web

Country Status (5)

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US (1) US3501111A (fr)
BE (1) BE735648A (fr)
DE (2) DE1934079A1 (fr)
FR (1) FR2012411A1 (fr)
GB (1) GB1278627A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3642230A (en) * 1970-03-02 1972-02-15 Gen Electric Rewind and fast forward mechanism for tape transport
US3929038A (en) * 1975-01-02 1975-12-30 Moni Inc Grinding machine and drive assembly therefor
US4210297A (en) * 1977-08-31 1980-07-01 Tokyo Shibaura Denki Kabushiki Kaisha Tape driving system for a tape recorder
US5195697A (en) * 1990-08-30 1993-03-23 Samsung Electronics Co., Ltd. Apparatus for preventing tape sag during mode changing in a video recorder
US5501408A (en) * 1993-09-20 1996-03-26 Goldstar Co., Ltd. Jog device for magnetic recording and reproducing apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782263A (en) * 1954-07-01 1957-02-19 Rca Corp Magnetic recording and reproducing apparatus
US2907531A (en) * 1954-01-13 1959-10-06 Gerald J Badgley Reverse drive mechanism for cameras and the like
US2920148A (en) * 1956-08-10 1960-01-05 Webster Electric Co Inc Recorder-reproducer apparatus
US2946531A (en) * 1957-08-27 1960-07-26 Alva K Hinchman Motion-picture film winder and editor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907531A (en) * 1954-01-13 1959-10-06 Gerald J Badgley Reverse drive mechanism for cameras and the like
US2782263A (en) * 1954-07-01 1957-02-19 Rca Corp Magnetic recording and reproducing apparatus
US2920148A (en) * 1956-08-10 1960-01-05 Webster Electric Co Inc Recorder-reproducer apparatus
US2946531A (en) * 1957-08-27 1960-07-26 Alva K Hinchman Motion-picture film winder and editor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3642230A (en) * 1970-03-02 1972-02-15 Gen Electric Rewind and fast forward mechanism for tape transport
US3929038A (en) * 1975-01-02 1975-12-30 Moni Inc Grinding machine and drive assembly therefor
US4210297A (en) * 1977-08-31 1980-07-01 Tokyo Shibaura Denki Kabushiki Kaisha Tape driving system for a tape recorder
US5195697A (en) * 1990-08-30 1993-03-23 Samsung Electronics Co., Ltd. Apparatus for preventing tape sag during mode changing in a video recorder
US5501408A (en) * 1993-09-20 1996-03-26 Goldstar Co., Ltd. Jog device for magnetic recording and reproducing apparatus

Also Published As

Publication number Publication date
GB1278627A (en) 1972-06-21
DE6926563U (de) 1969-11-13
DE1934079B2 (fr) 1970-02-19
FR2012411A1 (fr) 1970-03-20
DE1934079A1 (fr) 1970-02-19
BE735648A (fr) 1969-12-16

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