US3780608A - Strip cutting and mounting apparatus - Google Patents

Strip cutting and mounting apparatus Download PDF

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Publication number
US3780608A
US3780608A US3780608DA US3780608A US 3780608 A US3780608 A US 3780608A US 3780608D A US3780608D A US 3780608DA US 3780608 A US3780608 A US 3780608A
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US
United States
Prior art keywords
strip
retaining member
mount
cutter
retaining
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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
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English (en)
Inventor
G Brown
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
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Eastman Kodak Co
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Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
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Publication of US3780608A publication Critical patent/US3780608A/en
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D15/00—Apparatus for treating processed material
    • G03D15/10—Mounting, e.g. of processed material in a frame
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1304—Means making hole or aperture in part to be laminated
    • Y10T156/1309—Means making hole or aperture in part to be laminated and securing separate part over hole or aperture
    • 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
    • Y10T83/00—Cutting
    • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
    • Y10T83/5669—Work clamp

Definitions

  • ABSTRACT Apparatus for severing a portion of an information bearing strip from a remaining strip length and for sealing such a severed strip portion in a mount
  • the apparatus is of the kind provided with (a) a strip cutting member, (b) a strip retaining member and (c) a mount sealing mechanism.
  • a spring is actuated to urge the retaining member from a rest position to a position in which the retaining member firmly holds the strip portion against the mount.
  • the retaining member serves to prevent the strip portion from being displaced from the mount when the cutting member severs the strip portion from the remaining strip length.
  • the mount and the severed strip portion are transported with the retaining member (which still holds the severed strip portion against the mount) toward the mount sealing mechanism.
  • the spring is actuated to return the retaining member to the rest position.
  • the present invention relates generally to apparatus for severing a portion of an information bearing strip from a remaining strip length and for sealing such a severed strip portion in a mount. More particularly, the present invention relates to strip cutting and mounting apparatus wherein such apparatus is adapted to retain a strip portion in a mount during severence of the strip portion from a remaining strip length.
  • mount blank consisting essentially of two sections foldable about a hinge or crease-line extending between the mount sections.
  • the two mount sections are each formed with a window aperture, the window apertures being disposed to register upon folding the mount blank about the hinge and arranging the mount sections in overlying relation.
  • an information bearing medium Prior to folding the mount blank, an information bearing medium is placed on one of the two mount sections across a window aperture so that, upon arranging the mount sections in overlying relation, the information bearing medium will be located between the mount sections and will be visible through either of the window apertures. Thereafter, to maintain the information bearing medium in registration with the window apertures, the two overlying mount sections are sealed together, generally by pressure-activated or temperature-activated adhesive material disposed on an interior face of at least one of the mount sections.
  • a film frame or film transparency is severed from an exposed length of film strip and sealed in a film mount, for viewing of the film frame generally by image projection.
  • Securing the film frame in the film mount involves the several steps of placing the film frame on the interior face of one of the two mount sections, severing the film frame from the remaining film strip length, folding another of the two mount sections over the first-mentioned mount section and the interposed film frame, and sealing the two mount sections together with the film frame in place between them.
  • the act of severing the film frame from the remaining film strip length can cause the film frame to shift out of registration with the window aperture in the last-mentioned mount section.
  • an object of the present invention is to provide strip cutting and mounting apparatus which is improved so as to avoid the foregoing difficulties existing with respect to those devices previously known.
  • apparatus for severing a portion of an information bearing strip from a remaining strip length and for sealing such a severed strip portion in a mount
  • the apparatus is of the kind provided with (a) a strip cutting member, (b) a strip retaining member and (c) a mount sealing mechanism.
  • a spring or other suitable device is actuated to urge the retaining member from a rest position to a position in which the retaining member firmly holds the strip portion against the mount.
  • the retaining member serves to prevent the strip portion from being displaced from the mount when the cutting member severs the strip portion from the remaining strip length. Moreover, the retaining member relies on the constant urging force of the spring for holding the strip portion against the mount, rather than relying on the severing force of the cutting member as suggested by the prior art described hereinbefore. Thereafter, the mount and the severed strip portion are transported with the retaining member (which still holds the severed strip portion against the mount) toward the mount sealing mechanism. After movement of the mount and the severed strip portion to the mount sealing mechanism, the spring is actuated to return the retaining member to the rest position.
  • FIG. 1 is a perspective view of an information bearing strip and a mount blank, with which the strip cutting and mounting apparatus of the present invention can be used;
  • FIG. 2 is a perspective view of the strip cutting and mounting apparatus according to a preferred embodiment of the present invention, and showing the information bearing strip and the mount blank as they are initially received by such apparatus for strip cutting and mount sealing;
  • FIG. 3 is a schematic perspective view of a segment of the strip cutting and mounting apparatus (the information bearing strip and the mount blank being omitted), showing movement of a strip retaining member of such apparatus;
  • FIGS. 4, 5 and 6 are side elevation views, in section, of the strip cutting and mounting apparatus, showing the manner in which a portion of the information bearing strip is severed from a remaining strip length and then sealed in the mount blank;
  • FIGS. 7 and 8 are side elevations views, insection, of the strip cutting and mounting apparatus, showing the manner in which the different members of such apparatus are returned to an initial or starting positions.
  • the mount blank 1 is generally of the kind provided with'(a) two hinged, resiliently flexible mount sections 2 and 3 which can be folded one over another, (b) several openings 4 in the mount section 2 and several pins 5 projecting from the mount section 3 and adapted to respectively extend through the several openings 4 upon folding one mount section over another.
  • the mount section 3 has a frame or peripherally raised portion 6 which is constructed so that, upon folding one mount section over another, the mount section 2 will be snugly received in the frame.
  • two window apertures 7 and 8 of substantially the same size are formed in the mount sections 2 and 3. The mount windows 7 and 8 are disposed to exactly register upon folding one mount section over another.
  • the mount section 3 has a nest or relieved portion 9 which is disposed about the window aperture 8 and which is adapted to receive an information bearing medium, such as a film transparency or film frame it), in the manner most clearly illustrated by FIG. I.
  • an information bearing medium such as a film transparency or film frame it
  • the film frame 10 is secured in the mount 1.
  • securing the film frame 10 in the mount 1 involves the successive steps of severing the film frame from a remaining film strip length ll, folding the mount section 2 over the mount section 3 and the interposed film frame, and sealing the two mount sections together with the severed film frame in place between them.
  • an image portion 12 of the severed film frame 10 will be visible through both of the mount windows 7 and 8.
  • an identification or index number 13, imprinted on the film frame 10 will be visible through a window aperture 14 on the mount section 2.
  • FIG. 2 a film cutting and mounting apparatus generally indicated by the reference number 15.
  • the cutting and mounting apparatus 15 is provided with a table or platform 16 having a substantially planar top surface l7 along which a hollow carriage 18 can be moved in opposite directions indicated by arrows l9 and 2d.
  • the carriage l8 pivotally supports a film retaininglever, the specific function of which will be described in detail hereinafter and which is generally indicated by the reference number 21.
  • FIG. 1 As can be most clearly seen in FIG.
  • the carriage 18 includes an L-shaped depending member 26 which extends through a slot 27 in the table surface 17 (see FIG. 2).
  • a helical tension spring 28 having two opposite ends 29 and 3t) interconnects the retaining lever 21 and the carriage member 26. As shown in FIG. 3, the spring end 29 is coupled to the retaining lever 21 for pivotal movement therewith and the spring end 30 is coupled to the carriage member 26 so as to remain stationary during pivotal movement of the retaining lever.
  • the tension spring 28 serves as an overcenter spring which is adapted to urge the retaining lever 21 to positions A and B. More specifically, as viewed in FIG. 3, if the retaining lever 21 is pivoted in a clockwise direction out of position A, the overcenter spring 28 will be actuated to urge the retaining lever to position B. Conversely, if the retaining lever 21 is pivoted in a counterclockwise direction out of position B, the overcenter spring 28 will be actuated to urge the retaining lever to position A.
  • the retaining lever 21 includes an arm member 31 which extends through a slot 32 in the carriage 1 8, as shown in FIG. 3. Opposite ends 33 and 34 of the slot 32 cooperate with the retaining lever arm 31 to effect two stops for limiting pivotal movement of the retaining lever 21 between positions A and B.
  • a cutter blade 35 is fastened to a blade support 36, the blade support being provided with a lever member 37 which is pivotally connected by a coupling pin 38 to a side wall 39 of the table 16.
  • the blade support lever 37 extends through a slot 40 in the table surface 17. Opposite ends 41 and 42 of the slot 40 cooperate with the blade support lever 37 to effect two stops for limiting pivotal movement of the blade support 36 and the cutter blade 35.
  • a helical tension spring 43 interconecting the blade support lever 37 and the table side wall 39, urges the blade support 36 and the cutter blade 35 to an idle or normal position shown in FIGS. 2 and 5. When the blade support 36 and the cutter blade 35 are in the idle position, the blade support lever 37 is held against the slot end 42 by the tension spring 43 (see FIG. 5).
  • the blade support 36 has a tab or projecting member 44 which abuts against the retaining lever 21 when the retaining lever is disposed in position A and the blade support and the cutter blade 35 are disposed in the idle position.
  • the tab 44 will simultaneously pivot the retaining lever 21 in the same direction out of position A.
  • the overcenter spring 28 will be actuated to urge the retaining lever 21 to position 8 (see FIG. 3).
  • the film frame 10 will be disposed to be severed from the remaining film strip length 11 by the cutter blade 35.
  • the overcenter spring 28 is actuated to urge the retaining lever 21 to position B (as described in detail hereinbefore).
  • position B as shown in FIG. 3, a film retaining finger 45 of the retaining lever 21 obliquely extends into the table surface slot 27.
  • the retaining finger 45 is prevented from entering such slot and, instead, will be urged into abutment against the film frame 10 to firmly hold the film frame on the mount section 3 in preparation for the film cutting.
  • the cutter blade will be moved to the cutting position shown in FIG. 4, thereby severing the film frame 10 from the remaining film strip length 11.
  • the retaining finger 45 (relying on the constant urging force of the spring 28) prevents the film frame 10 from being displaced from the open mount blank 1 during the film cutting.
  • the severed film frame and the open mount blank 1 will accordingly be pushed in the same direction (see FIG. 5).
  • the mount section 2 will be advanced into abutment against a wall 46 which, as viewed in FIG. 5, is disposed above and spaced from the table surface 17.
  • the open mount blank 1 will be advanced between the table surface 17 and a bottom edge 47 of the wall 46, thereby causing the mount section 2 to pivot toward the mount section 3 and the severed film frame 10.
  • a mount cam plate 48
  • the mount section 2 (which is resiliently flexible) will be folded over the mount section 3 and the interposed film frame 10.
  • first and second rollers 50 and 51 which are supported in parallel spaced relation for enabling the closed or folded mount blank 1 (i.e. a mount blank whose mount sections 2 and 3 are disposed in overlying relation so that the several mount pins 5 respectively extend through the several mount openings 4) to be moved between such rollers.
  • Roller shafts 52 and 53 extend respectively within bearing slots 54, 55 (spaced on either side of the first roller 50) and bearing apertures 56, 57 (spaced on either side of the second roller 51).
  • the first roller 50 is supported for movement toward and away from the second roller 51 in opposite directions indicated by arrows 58 and 59 (see FIG. 2).
  • the bearing slots 54, 55 and the bearing apertures 56, 57 are spaced from each other so as to effect (1) a minimum spaced distance between the rollers 50 and 51 which is slightly less than the thickness dimension of the closed mount blank 1, and (2) a maximum spaced distance between the rollers which is substantially greater than the thickness dimension of the closed mount blank.
  • helical compression springs 60 and 61 are disposed within the bearing slots 54 and 55 in the manner illustrated by FIG. 2, so as to urge the first roller toward the second roller.
  • Two resiliently compressible annulus members 62 and 63 are disposed peripherally about spaced annular segments of the first roller 50 and normally in abutment against the second roller 51 (see FIG. 2).
  • the O-rings 62 and 63 are partially received in circumferential grooves 64 and 65 on the first roller 50, so as to secure the O-rings on the first roller for rotation therewith.
  • the folded mount blank 1 upon exiting from between the table surface 17 and the mount cam plate 48, the folded mount blank 1 is first advanced into abutment against the second roller 51 and then deflected by the second roller into abutment against the first roller 50. Thereafter, the mount blank 1 is moved between the first and second rollers 50 and 51 so that the mount section 3 rides over the second roller (which now serves as a mount back-up or support roller) and the several mount pins 5 are peened respectively over the several mount openings 4 by the first roller.
  • Such pin peening results from the rigid composition of the rollers 50 and 51, which are preferably constructed of a metallike material.
  • the O-rings 62 and 63 are spaced apart on the first roller 50 in order to bypass the several mount pins as the folded mount blank 1 is moved between the first and second rollers.
  • the O-rings 62 and 63 are disposed to normally abut against the second roller 51, theO-rings will ensure that the mount sections 2 and 3 remain in overlying or contiguous relation during the roller-induced mount flexing, occurring as an incident to the pin peening. Accordingly, upon peening the several mount pins 5 over the several mount openings 4, the folded mount blank 1 will be sealed with the severed film frame securely held in place between the overlying mount sections 2 and 3.
  • the rollers (and the O-rings 62 and 63) are driven in opposite rotational directions indicated by arrows 66 and 67 (see FIGS. 5 and 6).
  • Such rotational drive of the rollers 50 and 51 is effected by an appropriate drive motor (not shown) and by two gear wheels 68 and 69 which are disposed'on the roller shafts 52 and 53 so as to provide a driving connection between the rollers (see H6. 2).
  • the rubber O-rings 62 and 63 serve to draw the mount blank between the rollers.
  • the sealed mount 1 is ejected from between the rollers 50 and 51 and advanced down a slide 70 into a collection bin 71 (see FIG. 2).
  • first roller can be manually moved in the direction indicated by the arrow 58 until the maximum spaced distance between the rollers is reached.
  • the retaining lever finger 45 will no longer bear against the severed film frame 10 and, therefore, is slightly pivoted (along with the retaining lever 21) by the overcenter spring 28 to position B (described in detail hereinbefore and illustrated in FIG. 3).
  • position B the retaining lever finger 45 is engaged by a catch arm 72 connected to the carriage 18, as shown in FIG. 7. Thereafter, the carriage 18 and the retaining lever 21 are moved by the operator along the table surface 17, in the direction indicated by the arrow 20.
  • a reset finger 73 preferably in the form of a laterally flexible helical spring, projecting from a side wall 74 of the table 16 serves to pivot the retaining lever arm 31 (along with the retaining lever 21) in a counterclockwise direction, as viewed in FIGS. 7 and 8, upon movement of the retaining lever arm against the reset finger. Accordingly, the retaining lever 21 is pivoted out of position B and separated from the catch arm 72; whereupon, the overcenter spring 28 is actuated to return the retaining lever to position A as shown in FIGS. 3 and 8.
  • film cutting and mounting apparatus 15 has been considered for use with the specific mount blank 1 and the film frame 10, such apparatus may be adapted for use with other information bearing mediums and mounts.
  • An improved apparatus for severing a portion of an elongate strip from a remaining strip length wherein said apparatus is of the kind provided with (a) a strip cutter for severing such a strip portion from a remaining strip length and (b) a strip retaining member for holding such a strip portion on a strip support in preparation for said cutter severing the strip portion from a remaining strip length, and wherein the improvement comprises:
  • spring means connected to said retaining member and adapted for movement between two actuating positions, respectively wherein said spring means urges said retaining member to said retaining and rest positions.
  • said retaining member mounting means includes means mounting said retaining member for pivotal movement between said retaining and rest positions;
  • said spring means includes a tension spring having two opposite ends, one of which is connected to said retaining member for pivotal movement therewith and another of which is fixed so as to remain stationary during pivotal movement of said retaining member.
  • An improved apparatus for severing a portion of an elongate strip from a remaining strip length wherein said apparatus is of the kind provided with (a) a strip cutter for severing such a strip portion from a remaining strip length and (b) a strip retaining member for holding such a strip portion on a strip support in preparation for said cutter severing the strip portion from a remaining strip length, and wherein the improvement comprises:
  • said retaining member mounting means and said cutter mounting means includes means mounting said retaining member and said cutter for pivotal movement respectively about substantially parallel spaced axes;
  • said spring means includes a tension spring having two opposite ends, one of which is connected to said retaining member for pivotal movement therewith and another of which is fixed so as to remain stationary during pivotal movement of said retaining member; and said means for effecting movement of said spring means includes a projecting member disposed on said cutter for moving said retaining member out of said rest position upon movement of said cutter out of said idle position and, in turn, for effecting movement of said spring means to said first actuating position.
  • An improved apparatus for severing a portion of an information bearing strip from a remaining strip length wherein said apparatus is of the kind provided with (a) a strip cutter for severing such a strip portion from a remaining strip length and, (b) a strip retaining member for holding such a strip portion against a mount in preparation for said cutter severing the strip portion from a remaining strip length, and wherein the improvement comprises:
  • carrier means for transporting, in a first direction along a path, (1) a mount, (2) a strip portion which is severed from a remaining strip length and (3) said retaining member, when said retaining member holds the severed strip portion against the mount, and for transporting said retaining member in a second direction along said path; overcenter spring means connected to said retaining member and adapted for movement between first and second actuating positions, respectively wherein said spring means urges said retaining member to said retaining and rest positions;

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Making Paper Articles (AREA)
US3780608D 1972-01-19 1972-01-19 Strip cutting and mounting apparatus Expired - Lifetime US3780608A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21894972A 1972-01-19 1972-01-19

Publications (1)

Publication Number Publication Date
US3780608A true US3780608A (en) 1973-12-25

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US3780608D Expired - Lifetime US3780608A (en) 1972-01-19 1972-01-19 Strip cutting and mounting apparatus

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US (1) US3780608A (fi)
JP (1) JPS4882822A (fi)
DE (1) DE2302696A1 (fi)
FR (1) FR2168816A5 (fi)
GB (1) GB1407868A (fi)
HK (1) HK24376A (fi)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256527A (en) * 1979-11-19 1981-03-17 Polaroid Corporation Slide mounting apparatus
US4586321A (en) * 1982-10-08 1986-05-06 Tecnodia, S.R.L. Apparatus for automatically inserting transparencies into one piece frames
US4698883A (en) * 1984-10-05 1987-10-13 Eastman Kodak Company Cutting and mounting apparatus
US4706370A (en) * 1984-10-05 1987-11-17 Eastman Kodak Company Cutting and mounting apparatus
EP0250974A2 (de) * 1986-06-20 1988-01-07 Reflecta Gmbh Foto Film Projektion Diarahmungsgerät
FR2667405A1 (fr) * 1990-10-02 1992-04-03 L N Plast Kunststoffverarbeitu Dispositif de pression pour pellicules dans des machines automatiques d'encadrement pouvant garnir automatiquement des cadres de diapositives.
US5167753A (en) * 1990-10-15 1992-12-01 Mccullough Edward E Apparatus for making beaded dental floss or the like

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2547924A1 (de) * 1975-10-25 1977-04-28 Elektrooptik Gmbh Vorrichtung zum einrahmen einer anzahl von roentgenaufnahmen eines bestimmten formats
DE2717317A1 (de) * 1977-04-19 1978-10-26 Alfred Lemmer Werkzeug Und Mas Vorrichtung zum perforieren einer folie
DE2962960D1 (en) * 1978-09-14 1982-07-15 Johann Kajetan Wohlrab Process for assembling slides and slide-cutting and -framing apparatus to be used in this process
GB2229395B (en) * 1989-02-15 1992-10-14 Trinity Graphics Limited Improvements in or relating to printing
JPH06232180A (ja) * 1993-02-05 1994-08-19 Nec Corp 半導体装置
CN106695927A (zh) * 2016-11-18 2017-05-24 无锡祁龙胶粘制品有限公司 一种防卷边的保护膜分切缠绕一体装置
CN111941818A (zh) * 2020-08-18 2020-11-17 李东旭 一种电子设备外壳贴膜的用高效剪切装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2302561A (en) * 1941-02-08 1942-11-17 Libby Film mounter
US2878952A (en) * 1956-02-14 1959-03-24 Eastman Kodak Co Hand cutter
US3043363A (en) * 1961-03-14 1962-07-10 Donald W Byers Machine for autoamtically placing and securing film transparencies in film mounts
US3194709A (en) * 1961-05-12 1965-07-13 Tom M Bondhus Automatic film mounting appartus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2302561A (en) * 1941-02-08 1942-11-17 Libby Film mounter
US2878952A (en) * 1956-02-14 1959-03-24 Eastman Kodak Co Hand cutter
US3043363A (en) * 1961-03-14 1962-07-10 Donald W Byers Machine for autoamtically placing and securing film transparencies in film mounts
US3194709A (en) * 1961-05-12 1965-07-13 Tom M Bondhus Automatic film mounting appartus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256527A (en) * 1979-11-19 1981-03-17 Polaroid Corporation Slide mounting apparatus
US4586321A (en) * 1982-10-08 1986-05-06 Tecnodia, S.R.L. Apparatus for automatically inserting transparencies into one piece frames
US4698883A (en) * 1984-10-05 1987-10-13 Eastman Kodak Company Cutting and mounting apparatus
US4706370A (en) * 1984-10-05 1987-11-17 Eastman Kodak Company Cutting and mounting apparatus
EP0250974A2 (de) * 1986-06-20 1988-01-07 Reflecta Gmbh Foto Film Projektion Diarahmungsgerät
EP0250974A3 (de) * 1986-06-20 1989-01-04 Gmbh Foto Film Projektion Reflecta Diarahmungsgerät
FR2667405A1 (fr) * 1990-10-02 1992-04-03 L N Plast Kunststoffverarbeitu Dispositif de pression pour pellicules dans des machines automatiques d'encadrement pouvant garnir automatiquement des cadres de diapositives.
US5167753A (en) * 1990-10-15 1992-12-01 Mccullough Edward E Apparatus for making beaded dental floss or the like

Also Published As

Publication number Publication date
HK24376A (en) 1976-05-07
JPS4882822A (fi) 1973-11-06
FR2168816A5 (fi) 1973-08-31
GB1407868A (en) 1975-09-24
DE2302696A1 (de) 1973-07-26

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