US1823243A - Method and apparatus for lapping color film embossing rollers - Google Patents

Method and apparatus for lapping color film embossing rollers Download PDF

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Publication number
US1823243A
US1823243A US315771A US31577128A US1823243A US 1823243 A US1823243 A US 1823243A US 315771 A US315771 A US 315771A US 31577128 A US31577128 A US 31577128A US 1823243 A US1823243 A US 1823243A
Authority
US
United States
Prior art keywords
lapping
grooves
film
wires
cylinder
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
US315771A
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English (en)
Inventor
Wittel Otto
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
Priority to US315771A priority Critical patent/US1823243A/en
Priority to GB19826/29A priority patent/GB329214A/en
Priority to DEE39550D priority patent/DE495844C/de
Priority to FR684082D priority patent/FR684082A/fr
Application granted granted Critical
Publication of US1823243A publication Critical patent/US1823243A/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
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/14—Additive processes using lenticular screens; Materials therefor; Preparing or processing such materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artists' machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two-dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artists' machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two-dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • B44B3/04—Artists' machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two-dimensionally for carving, engraving, or guilloching shallow ornamenting or markings wherein non-plane surfaces are worked
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B2700/00—Machines, apparatus, tools or accessories for artistic work
    • B44B2700/02—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two-dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • B44B2700/025—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two-dimensionally for carving, engraving, or guilloching shallow ornamenting or markings for engraving a surface of revolution

Definitions

  • This invention relates to lapping minute grooves or serrations on rollers for embossmg film for color motion pictures.
  • One object of my invention is to provide a method I a of obtaining a series of exceedingly small grooves in a roller which are of similar shape,
  • Another object is to provide a lapping tool with which such grooves may be 110 made. Another object is toprovide a wire lapping tool on which wires are provided for the lapping operation and which are held under sprin tension. Another object is to provide a wire-holding means which is constructed to hold each wire accurately in a predetermined position, and other objects will appear from the following specification, the novel features being particularly pointed out in the claims at the end thereof.
  • Fig. 1 is a view partly in elevation and partly in section of a film embossing roller constructed by the method and with they apparatus made in accordance with my invention
  • Fig. 2 is a side elevation of a lapping tool constructed in accordance with a preferred embodiment of my invention
  • Fig. 3 is a 'top plan view of the lapping tool shown in Fig. 2;
  • Fig. 4 is an enlarged side elevation of one of the wire-holding posts of the lapping tool
  • Fig. 5 is a highly magnified fragmentary sectional detail illustrating the action of the lapping wires upon the embossing roller
  • Fig. 6 is an enlarged sectional view through a portion of a wire-holding post
  • Fig. 7 is a fragmentary detail showing the surface of a cylinder having the (preliminary etched or cut grooves therein;
  • Fig. 8 is an enlarged fragmentary detail indicating a possible relation bet-ween a film being embossed and'an embossing roller constructed in accordance with my invention.
  • the film is embossed with a plurality of extremely fine lenticular areas and these areas may be made by embossing the film with a roller which has grooved or serrated periphery.
  • the lenticular areas or elements formed in the film are extremely minute as, for instance, in a preferred type of film the distance across these elements may be from .0015 to .002 of an inch. It is to be understood, of course, that these dimensions may vary considerably, but the lenticular elements are always extremely small.
  • my method and apparatus may be used in making a completed cylinder which may be used directly to roll t e lenticular elements into the film, or it may .be used for making a tool which is used to transfer an impression to a second tool, which later is used to make a final film embossing roller. It is sometimes preferable to make the roller through a series of steps, because when this is done, in making the two preliminary tools, it is easier to make the first tool comparatively small in width, the second somewhat larger, and the third film embossing roller can readily be made of considerably greater dimensions than either of the tools used in making it. This system forms no part of my invention.
  • a grooved embossing cylinder may consist of an annular member 1, having a plurality of very fine grooves 2, formed in its surface. Because of the extremely small size of these grooves, the drawing is nowhere near to scale.
  • a cylinder 1 is first made with a smooth, accurately ground and polished, outside periphery which may be then covered with a resist, such as wax, and a fine line scratched through the wax, after which the cylinder is etched, leaving more or less irre lar grooves, as indicated at 3 in Figure Instead of etching, these grooves may be out upon a lathe, but, in any event, the grooves are not of either the proper size or width.
  • the spacing between the centers of grooves indicated at S in Figare 7 should be the width which is desired between the final grooves in the roller. This may be, say, .0018 of an inch.
  • the grooves are made perfect in shape and the points between the grooves are sharpened by means of a lapping operation and with a lapping tool which will now be described.
  • the lapping tool ma comprise an L-shaped member 4, to WlllCll there is pivoted at 5 an arm 6, which is pressed about the pivotal point in the direction indicated by the arrow by means of a spring 7.
  • Each of these members,- that is, members 4 and 6, carry wire-holding posts 8. These posts may be held by screws 9 on their respective mounts and, as indicated in Figure 4, are preferably provided with a #0 thread 10 about which the wires 11 are wound.
  • the L-shaped member 4 and the hinged member 6, with theposts 8, constitute a spring support for the wires 11.
  • I preferably provide the thread 10 of a pitch considerably greater than .0018, but of a multiple thereof. For instance, there may be one thread 10 for every four grooves on the roller, so that with the lap- Q ping wires spaced as shown in Figure 6, each wire would tend to polish every fourth groove in the roller and by moving the lapping tool gradually up and down the surface of the cylinder, all of the grooves will finally be shaped and polished.
  • the size of the wires relative to the grooves is also important. Referring to Figure 5. if the'final spacing of the grooves indicated at (Z is desired to be .0018, the radii of curvalo ture R may be the same dimension as the spacing and if this is so, the radius of the lapping wires '1' should be slightly less than the radius of the grooves, in this case, 1" being .0015. This difference in the radii permits a certain 56 amount of lapping compound L to lie between the lapping wires and the grooves.
  • the first of the lapping operation is performed with very fine emery water and the final polishing is performed with rouge.
  • a new lapping tool may be readily prepared for olishing minute grooves in cylinders provides grooves having accurate radii of curvature and is especially useful in that regular sharp points 13, as shown in Figure 5, separate the smooth curved walls 14 from each other.
  • the annular member 1 is preferably made of cold-rolled steel, as this metal can be readily worked in the manner described above, and as it is sufliciently hard to stand up under the necessary pressure used in embossing the film. However, it is obvious that other grades of steel or other metal can be used if desired.
  • the periphery of the member 1,that is, the grooved face 2 can be protected from rusting, if desired, with a very thin layer of plating chromium, but this may be omitted if care is taken in using the roller to prevent rust.
  • a method of lapping lenticular film embossing rollers which comprises providing a cylinder with a plurality of fine guide lines, turning said cylinder, and lapping with a plurality of wires, a fine lapping compound being used on the cylinder.
  • a method of lapping lenticular film embossing rollers which comprises providing a cylinder with a plurality of fine guide lines. turning said cylinder and moving wires under tension over the rotating cylinder, the wires being positioned by the guide lines, and applying a very fine lapping compound between the wires and cylinder.
  • a method of lapping lenticularfilm embossing rollers which comprises roviding a cylinder with a plurality of ne guide grooves breaking the surface of the cylinder, lapping said grooves with a'lapping compound and with wires of slightly less diameter than the grooves to be made in the cylinder, and continuing the lapping operation until the groovesare enlarged to the desired size, said operation also polishing the grooves in the periphery of the cylinder.
  • a method of lapping lenticular film embossing rollers which comprises providing a cylinder with a plurality of fine guiding grooves, and enlarging said grooves by lapping with a plurality of fine wires, said wires e1 other than the guiding grooves.
  • a method of lapping lenticular film embossing rollers which comprises providing a cylinder with a plurality of fine guiding grooves, and enlarging said grooves by lapping with a plurality of fine wires, said wires being spaced at greater distances from each other than the guiding grooves, said spacing being multiples of the spacing of the guiding grooves.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US315771A 1928-10-29 1928-10-29 Method and apparatus for lapping color film embossing rollers Expired - Lifetime US1823243A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US315771A US1823243A (en) 1928-10-29 1928-10-29 Method and apparatus for lapping color film embossing rollers
GB19826/29A GB329214A (en) 1928-10-29 1929-06-27 Improvements in or relating to films for colour photography
DEE39550D DE495844C (de) 1928-10-29 1929-07-11 Verfahren und Werkzeug zur Herstellung von Walzen zum Praegen von linsenfoermigen Elementen in Filmen
FR684082D FR684082A (fr) 1928-10-29 1929-10-29 Procédé et dispositif pour la fabrication des rouleaux de gaufrage pour films en couleurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US315771A US1823243A (en) 1928-10-29 1928-10-29 Method and apparatus for lapping color film embossing rollers

Publications (1)

Publication Number Publication Date
US1823243A true US1823243A (en) 1931-09-15

Family

ID=23225985

Family Applications (1)

Application Number Title Priority Date Filing Date
US315771A Expired - Lifetime US1823243A (en) 1928-10-29 1928-10-29 Method and apparatus for lapping color film embossing rollers

Country Status (4)

Country Link
US (1) US1823243A (de)
DE (1) DE495844C (de)
FR (1) FR684082A (de)
GB (1) GB329214A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114407565A (zh) * 2022-02-09 2022-04-29 山东通佳机械有限公司 一种内壁光滑螺旋波纹管的标识压印装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114407565A (zh) * 2022-02-09 2022-04-29 山东通佳机械有限公司 一种内壁光滑螺旋波纹管的标识压印装置
CN114407565B (zh) * 2022-02-09 2024-05-17 山东通佳机械有限公司 一种内壁光滑螺旋波纹管的标识压印装置

Also Published As

Publication number Publication date
DE495844C (de) 1930-04-11
FR684082A (fr) 1930-06-20
GB329214A (en) 1930-05-15

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