US3712558A - Take-up device for a strip of web material - Google Patents

Take-up device for a strip of web material Download PDF

Info

Publication number
US3712558A
US3712558A US00124074A US3712558DA US3712558A US 3712558 A US3712558 A US 3712558A US 00124074 A US00124074 A US 00124074A US 3712558D A US3712558D A US 3712558DA US 3712558 A US3712558 A US 3712558A
Authority
US
United States
Prior art keywords
strip
hub
web material
path
take
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
US00124074A
Other languages
English (en)
Inventor
R Johnson
C Smith
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 US3712558A publication Critical patent/US3712558A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/32—Details specially adapted for motion-picture projection
    • G03B21/321—Holders for films, e.g. reels, cassettes, spindles
    • G03B21/326—Means for fixing the film on the axis of a reel or spindle

Definitions

  • a take-up device for a strip of web material includes a [4 1 Jan. 23, 1973 friction driven take-up reel having a pair of spaced flanges and a hub rotatably mounted on a housing. A plurality of teeth extend radially from the hub for engaging the leading end portion of a strip of web material.
  • a snubber positioned adjacent the open end of the threading channel has a first position for guiding the leading end portion of an advancing strip of web material from the open end of the threading channel to the web guide link and a second position spaced transversely from the first position in a direction perpendicular to the web materials plane.
  • the snubber is spring biased toward its first position and is moved toward its second position by web tension.
  • the snubber is effective to accommodate instantaneous differences in the velocity of the strip in the threading channel and the velocity of the web material being unwound from the take-up reel.
  • the present invention relates to take-up devices for strips of web material, and more particularly to apparatus for delivering the leading end portion of a strip of web material to the hub of a take-up reel, and for guiding the web material away from the hub.
  • Film emerging from the open end of the threading channel follows the guide arm to the hub where it is engaged by the hub.
  • the film continues to follow the guide arm which rides on the outer convolution of film wound about the hub and pivots against the force of the spring as the film convolutions build up.
  • film that is unwound from the hub follows the guide arm back to the film threading channel even though the guide arm serves no useful function once the leading end portion of the film has been engaged by the take-up reel.
  • frictional drag is needlessly imposed on the film by the guide arm during modes of projector operation when the guide arm serves no useful purpose.
  • U.S. Pat. No. 1,346,356 in the name of W. Wenderhold is exemplary of a number of patents disclosing apparatus wherein members'which are used during the film threading cycle of projectors are physically removed from the film path during other modes of operation. While such apparatus overcomes the abovementioned disadvantage of unnecessary drag on the film during non-threading operation, the mechanism for withdrawing the film guide members from the film path after the leading end portion of the film has been engaged by the reel hub includes complicated sensing and positioning members which increases the complexity and cost of the projectors.
  • a web guide means defines a path for guiding the leading end portion of the strip of web material from the open end of the threading channel to the hub.
  • the guide means is formed to permit the strip to be withdrawn from the path in a direction transverse to the web materials plane by tension applied to the strip by the hub.
  • a snubber positioned adjacent the open end of the threading channel has a first position for guiding the leading end portion of an advancing strip of web material from the open end of the threading channel to the guide means and a second position spaced transversely from the first position in a direction perpendicular to the web material's plane.
  • the snubber is spring biased toward its first position and is moved toward its second position by web tension. When the web material is being rewound from the take-up reel, the snubber is effective to accommodate instantaneous differences in the web material speed in the threading channel and the speed of the web material being unwound from the take-up reel.
  • FIG. 3 is a side view of a portion of the apparatus shown in FIG. 1, partially in section;
  • FIG. 4 is a sectionalview taken along line 4-4 of FIG. I; and I FIG. 5 is a perspective view of a portion of the takeup device shown in FIG. 1.
  • take-up devices for web material having features according to the present invention may be used in conjunction with apparatus for handling various types of web material, such as for example, motion picture film, magnetic tape, punch tape, etc.
  • the illustrated embodiment of the invention contemplates use of the take-up device according to the present invention on a motion projector. Because projectors are well known, the present description will be directed in particular to elements forming part of, or cooperating more directly with, apparatus in accordance with the present invention. It is to be understood that projector elements not specifically shown or described may take various forms well known to those skilled in the art.
  • a projector housing includes a pair of spaced, parallel platespartially shown at and 12 in the drawings.
  • plates 10 and 12 are disposed in generally horizontal planes during normal operation of the projector.
  • a take-up reel 14 has a pair of spaced flanges 16 and 18 and a hub 20 which is mounted on a spindle extending from plate 12.
  • the flanges of reel 14 extend through an opening 22 in plate 10 at an angle of approximately 19 to that plate to provide space above plate 10 for a supply reel, not shown, to overlap the lower portion of reel 14.
  • the spindle and hub 20 are rotated in a web-winding direction shown by arrow 24 by a friction drive 26.
  • Drive 26 may selectively be connected to the spindle by a coupling 28.
  • I-lub 20 is provided with a plurality of teeth 30 extending radially therefrom between flanges 16 and 18 to engage perforations in the leading end portion of a strip of film F.
  • the projector has a pair of upstanding guide members 32 and 34 which define one end of film threading channel through the projector mechanism.
  • Guide members 32 and 34 are perpendicular to plate 10 so that the threading channel defined thereby and the plane occupied by the film is also perpendicular to plate 10.
  • Means are provided for defining a guide path for the leading end portionof the film between the open (right) end of the threading channel and hub 20.
  • a web guide link 36 is mounted on plate 10.
  • Guide link 36 has a pair of upstanding walls 38 and 40 defining a film guide channel therebetween. The walls are formed such that the film passing therebetween is turned through an angle of 19 to align the film with flanges 16 and 18 of take-up reel 14.
  • wall 40 is somewhat shorter than wall 38.
  • the left end. of wall 40 as viewed in FIG. 1 is curved away from wall 38 to provide a relatively wide mouth at the entrance to link 36, thereby to assure that the leading end portion of film F will enter the guide path smoothly and surely.
  • the other end of wall 40 is tapered downwardly at 42 asshown in FIG. 3 so that the wall 40 ends at the'bottom of the film guide channel in; link 36.
  • Wall 40 is tapered at 42 for reasons to be explained hereinafter.
  • a film snubber 44 is mounted on the housing for rotation about a pin 46 in a direction transverse to the path of film F.
  • a spring 48 resiliently urges snubber 44 toward-the film path to the full line position shown in FIG. 1. In that position, snubber 44 completes the path for directing film from the open end of the threading channel defined by guides 32, 34 into the guide path partially defined by web guide link 36.
  • the leading end portion of film F engages surface 50 of a web guide arm 52 which completes the guide path.
  • the guide arm is pivotally mounted on plate 10 by a pin 54 which extends through a hole 56 (FIG. 5) in one end of the arm. Pin 54 also is disposed at an angle of about 19 relative to plate 10.
  • a tab 58 extendsfrom the upper edge of surface 50 to overlie the film as it exits from link 36. j The lower surface of tab 58 tapers downwardly, and it cooperates with link 36 to guide the side edges of the film between flanges 16 and 18 of take-up reel 14.
  • Arm 52 defines an arcuate path between link 36 and hub 20, and it is shaped so that frictional force on the arm created by rotation of reel 14 in the direction of arrow 24 lightly urges the arm about pin 54 in a clockwise direction to rest against the hub. Another factor tending to move the arm toward the hub includes gravity due to the position of the arm on a 19 angle to vertical axis of rotation.
  • a web 60 extends outwardly from the back side of the arm to add rigidity.
  • Surface 50 is substantially the same width as film F, and the surface has a protruding portion 62 to prevent the film from rubbing against the surface, thereby protecting the emulsion coating of the film from scratches. The effect of protruding portion 62 can best be seen by referring to FIG. 4.
  • FILM THREADING OPERATION 7 As film is advanced through the projector threading channel, the last portion of which is defined by guide members 32 and 34, hub 20 is coupled to friction drive 26 and is rapidlyrotated in the direction of arrow 24. Snubber 44 is urged to the position shown in solid lines in FIG. 1 by spring 48 so that it will guide the leading end portion of the film into the first portion of the guide path defined by web guide link 36. Web guide arm 52 is pivoted about pin 54 in a clockwise direction to rest upon the surface of hub 20. The leading end portion of film F exits'from link 36 and follows surface 50 of arm 52 to hub 20 where the perforations in the film are engaged by teeth 30 extending from the hub surface.
  • REVERSE OPERATION During operation of the projector to unwind film from hub20, such as for example during rewind and reverse projection modes of operation, coupling 28 between friction drive 26 and the spindle is released to permit reel 14 to be rotated in a counterclockwise direction as viewed in FIG. 1 by the ,film being-pulled vancing mechanism from momentary overloads which 1 might be imposed on the film because of inertia of takeup reel 14 and reel pick which occurs when the film frictionally engages a reel flange momentarily because of a bent flange or a wobbling reel.
  • a take-up device for apparatus having a housing and a threading channel having an open end through which the leading end portion of a strip of web material may be advanced, said take-up device comprising:
  • a hub rotatably mounted on the housing and spaced from the open end of the threading channel;
  • web guide means defining a path for guiding the leading end portion of a strip of web material from the open end of the threading channel to said hub, said web guide means including means for permitting a strip of web material to be withdrawn from said path in a direction transverse to the web materials plane by tension applied to the strip;
  • a second wall having a third surface spaced from and facing said second surface for defining a space between said second and third surfaces for receiving a strip of web material, said second wall upstanding from said first surface a shorter distance than said first wall to permit a strip of web material to be moved over said second wall and out of said path by tension appliedto the strip.
  • said link further comprises an open end through which the leading end portion of an advancing strip of web material may emerge from the space defined by said second and third surfaces;
  • said web guide means further includes an arm pivotally mounted on the housing, said arm having a surface extending generally from the open end of said link to said hub for guiding the leading end portion of an advancing strip of web material from said link to said hub.
  • a take-up device as defined in claim 1 further comprising;
  • a snubber mounted for movement between (1 a first position for guiding the leading end portion of an advancing strip of web material from the open end of the threading channel into said path in said web guide means and (2) a second position spaced transversely from said path in a direction perpendicular to the web materials plane, said snubber being movable from its first to its second position by the strip when the strip is withdrawn from said path by tension applied thereto by rotation of said hub.
  • a take-up device as defined in claim 5 further comprising spring means for urging said snubber from its second position toward its first position.
  • a take-up device for apparatus having a housing and a threading channel having an open end through which the leading end portion of a strip of web material may be advanced; said take-up device comprising:
  • a hub rotatably mounted on the housing and spaced from the open end of the threading channel;
  • web guide means defining a path for guiding the leading end portion of a strip of web material from the open end of the threading channel to said hub, said web guide means including means for permitting a strip of web material to be withdrawn from said path in a direction transverse to the web material 's plane by tension applied to the strip;
  • a snubber mounted for movement between.( 1 a first position for guiding the leading end portion of an advancing strip of web material from the open end of the threading channel to said path and (2) a second position spaced transversely from said path in a direction perpendicular to the web materials plane, said snubber being movable from its first to its second position by the strip of web material withdrawn from said path by tension applied to the film by rotation of said hub.
  • a take-up device as defined in claim '7 further comprising spring means for urging said snubber from its second position toward its first position, whereby said snubber assumes a third position intermediate said first position and said second position when said strip is advanced away from said hub, said snubber in said third position being effective to accommodate instantaneous differences in the strips velocity in said threading channel and the velocity of the strip being unwound from said hub.
  • said link further comprises an open end through which the leading end portion of an advancing strip of web material may emerge from the space defined by said second and third surfaces;
  • said web guide means further includes an arm pivotally mounted on the housing, said arm having a surface extending generally from the open end of said link to said hub for guiding the leading end portion of an advancing strip of web material from said link to said hub.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Replacement Of Web Rolls (AREA)
  • Electric Clocks (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Unwinding Webs (AREA)
US00124074A 1971-03-15 1971-03-15 Take-up device for a strip of web material Expired - Lifetime US3712558A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12407471A 1971-03-15 1971-03-15

Publications (1)

Publication Number Publication Date
US3712558A true US3712558A (en) 1973-01-23

Family

ID=22412598

Family Applications (1)

Application Number Title Priority Date Filing Date
US00124074A Expired - Lifetime US3712558A (en) 1971-03-15 1971-03-15 Take-up device for a strip of web material

Country Status (5)

Country Link
US (1) US3712558A (oth)
JP (1) JPS5224494Y2 (oth)
DE (1) DE2212103A1 (oth)
FR (1) FR2129642A5 (oth)
GB (1) GB1376540A (oth)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB405160I5 (oth) * 1973-02-03 1975-01-28
US3922937A (en) * 1974-11-11 1975-12-02 Owens Corning Fiberglass Corp Machine for unrolling chopping, and feeding matted material
US4022366A (en) * 1976-03-22 1977-05-10 Durad Machine Company Ltd. Sheet handling apparatus
US4330096A (en) * 1979-10-27 1982-05-18 Agfa-Gevaert Aktiengesellschaft Apparatus for winding or unwinding webs of photosensitive material or the like
US4531689A (en) * 1984-07-02 1985-07-30 International Business Machines Corporation Vacuum probe for attaching tape to reel hub within a cartridge
US4591083A (en) * 1983-11-02 1986-05-27 Agfa-Gevaert Ag Threading arrangement for strip-shaped material
US5217178A (en) * 1991-02-21 1993-06-08 4-Seasons Counting Systems, Inc. Roll-to-roll stamp counter
US20080291256A1 (en) * 2004-01-21 2008-11-27 Silverbrook Research Pty Ltd Printer with a data capture device to identify a print sample
US20090123209A1 (en) * 2004-01-21 2009-05-14 Silverbrook Research Pty Ltd Printer for producing printer media web in container
US20090195603A1 (en) * 2004-01-21 2009-08-06 Silverbrook Research Pty Ltd Printer For A Web Substrate
US20100039488A1 (en) * 2004-01-21 2010-02-18 Silverbrook Research Pty Ltd Printing System Having Drying Compartment
US20100080642A1 (en) * 2004-01-21 2010-04-01 Silverbrook Research Pty Ltd Printer For Printing Pattern Input From Collection
US20100214385A1 (en) * 2004-01-21 2010-08-26 Silverbrook Research Pty Ltd Drying System for Web Printer
US20100220161A1 (en) * 2004-01-21 2010-09-02 Silverbrook Research Pty Ltd Modular Ink Delivery Assembly
US8020984B2 (en) 2004-01-21 2011-09-20 Silverbrook Research Pty Ltd Printing system having media loop dryer
US8025009B2 (en) 2004-01-21 2011-09-27 Silverbrook Research Pty Ltd Industrial printer with cutter and dryer modules

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891736A (en) * 1956-06-06 1959-06-23 Viggo A Blaes Automatic tape threading device
US3006650A (en) * 1957-08-21 1961-10-31 Ampex Magnetic tape machine
US3312407A (en) * 1965-01-14 1967-04-04 Columbia Broadcasting Syst Inc Self-threading take-up reel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891736A (en) * 1956-06-06 1959-06-23 Viggo A Blaes Automatic tape threading device
US3006650A (en) * 1957-08-21 1961-10-31 Ampex Magnetic tape machine
US3312407A (en) * 1965-01-14 1967-04-04 Columbia Broadcasting Syst Inc Self-threading take-up reel

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB405160I5 (oth) * 1973-02-03 1975-01-28
US3924821A (en) * 1973-02-03 1975-12-09 Eiki Ind Co Ltd Guiding device for an automatic film loader
DE2356083B2 (de) * 1973-02-03 1976-11-11 Eiki Industrial Co. Ltd., Osaka (Japan) Bandleitvorrichtung zur zufuehrung des bandendes eines film- oder tonbandes zu dem spulenwickelkern
US3922937A (en) * 1974-11-11 1975-12-02 Owens Corning Fiberglass Corp Machine for unrolling chopping, and feeding matted material
US4022366A (en) * 1976-03-22 1977-05-10 Durad Machine Company Ltd. Sheet handling apparatus
US4330096A (en) * 1979-10-27 1982-05-18 Agfa-Gevaert Aktiengesellschaft Apparatus for winding or unwinding webs of photosensitive material or the like
US4591083A (en) * 1983-11-02 1986-05-27 Agfa-Gevaert Ag Threading arrangement for strip-shaped material
US4531689A (en) * 1984-07-02 1985-07-30 International Business Machines Corporation Vacuum probe for attaching tape to reel hub within a cartridge
US5217178A (en) * 1991-02-21 1993-06-08 4-Seasons Counting Systems, Inc. Roll-to-roll stamp counter
US20090123209A1 (en) * 2004-01-21 2009-05-14 Silverbrook Research Pty Ltd Printer for producing printer media web in container
US20080291256A1 (en) * 2004-01-21 2008-11-27 Silverbrook Research Pty Ltd Printer with a data capture device to identify a print sample
US20090195603A1 (en) * 2004-01-21 2009-08-06 Silverbrook Research Pty Ltd Printer For A Web Substrate
US20100039488A1 (en) * 2004-01-21 2010-02-18 Silverbrook Research Pty Ltd Printing System Having Drying Compartment
US20100080642A1 (en) * 2004-01-21 2010-04-01 Silverbrook Research Pty Ltd Printer For Printing Pattern Input From Collection
US20100214385A1 (en) * 2004-01-21 2010-08-26 Silverbrook Research Pty Ltd Drying System for Web Printer
US20100220161A1 (en) * 2004-01-21 2010-09-02 Silverbrook Research Pty Ltd Modular Ink Delivery Assembly
US7997706B2 (en) 2004-01-21 2011-08-16 Silverbrook Research Pty Ltd Printer for a web substrate
US8011780B2 (en) 2004-01-21 2011-09-06 Silverbrook Research Pty Ltd Drying system for web printer
US8020984B2 (en) 2004-01-21 2011-09-20 Silverbrook Research Pty Ltd Printing system having media loop dryer
US8025009B2 (en) 2004-01-21 2011-09-27 Silverbrook Research Pty Ltd Industrial printer with cutter and dryer modules

Also Published As

Publication number Publication date
JPS4721626U (oth) 1972-11-10
FR2129642A5 (oth) 1972-10-27
DE2212103A1 (de) 1972-09-21
JPS5224494Y2 (oth) 1977-06-03
GB1376540A (en) 1974-12-04

Similar Documents

Publication Publication Date Title
US3712558A (en) Take-up device for a strip of web material
US3627230A (en) Apparatus for feeding strip material
JPS58182634A (ja) 写真フイルム装置
US3008661A (en) Antisnubber arrangement for film handling apparatus
US3552683A (en) Cinematographic projectors or the like and cartridges for use therewith
US3468498A (en) Supply roll spindle assembly for cinematographic projectors
US3705696A (en) Filmstrip and filmstrip retention device
US3724776A (en) Film feeding apparatus
US3606192A (en) Automatic takeup mechanism for strip material
US2568339A (en) Film advancing means for film magazines
US3601335A (en) Film cartridge
US3724777A (en) Motion picture projector apparatus
US3659804A (en) Web take-up device
US3536277A (en) Film magazine for motion picture projector
US3480226A (en) Projection cartridge
US3550880A (en) Film stripping mechanism
US3544040A (en) Take-up threading improvement for automatic strip handling device
US3921934A (en) Film cartridge
US3521829A (en) Self-threading take-up reel
US4205803A (en) Adaptor for a film viewer
US3451636A (en) Film guide edges on projection cartridge
US3750976A (en) Cinematographic projectors or the like and cartridges for use therewith
US3900169A (en) Film cartridge
US2570176A (en) Film-loop former
US2118896A (en) Motion-picture film magazine