US3559912A - Method and apparatus for mounting a negative - Google Patents
Method and apparatus for mounting a negative Download PDFInfo
- Publication number
- US3559912A US3559912A US749811A US3559912DA US3559912A US 3559912 A US3559912 A US 3559912A US 749811 A US749811 A US 749811A US 3559912D A US3559912D A US 3559912DA US 3559912 A US3559912 A US 3559912A
- Authority
- US
- United States
- Prior art keywords
- negative
- roll
- cradle
- mounting
- pressure roller
- 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
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/16—Coating processes; Apparatus therefor
- G03F7/18—Coating curved surfaces
Definitions
- SHEET 0! 4 METHOD AND APPARATUS FOR MOUNTING A NEGATIVE NEGATIVE MOUNTING METHOD AND APPARATUS This invention relates to the accurate application of a sheet of flexible material to a cylinder or roll. Such accurate application is particularly required in the manufacture of printing cylinders or rolls in a machine such as a Helio-Klischograph machine.
- the flexible sheet is a negative that is applied to a negative mounting roll, the negative having been produced by a well-known commercial method not part of this invention. After being mounted on the roll the negative is used to control the operation of mechanical engraving means for the making of a printing cylinder or roll in accordance with the negative.
- a printing roll of the type to which our invention relates. is particularly adapted for color printing.
- color printing it is necessary to manufacture several printing rolls, each of which will be used for printing on the same paper, but each printing a different color.
- Our invention relates particularly to a method and apparatus for applying a flexible control sheet such as a negative to a roll so that the printing roll will be engraved or otherwise formed under the control of the negative in proper relation to the axis of rotation of the printing roll.
- the basis of our method is the application of the negative to any device that automatically assumes a position on a negative mounting roll in which the longitudinal axis of the device is in exact alignment with the axis of rotation of the roll.
- a cradle that is automatically positioned in particular relation to the negative mounting roll or cylinder when deposited on the roll. In this position, the longitudinal axis of the cradle is parallel to the axis of rotation of the roll.
- our cradle is mounted for relatively free vertical movement and is balanced somewhat in this vertical movement by a counterweight, it being the purpose of the counterweight to offset at least partially the weight of the cradle so as to prevent damage to the copper shell of the roll to which the negative is applied.
- the cradle is equipped with aligning or securing means to which the negative may be fitted. and when so fitted.
- the means that hold the negative on the cradle are easily released so that after the negative has been secured to the roll. it may be wrapped about the roll without interference from the cradle.
- FIG. 1 illustrates generally one form of a machine with which our invention may be utilized.
- FIG. 2 is an elevation of the machine of FIG. I, looking at one end thereof.
- FIGS. 3a and 3b are diagrammatic sketches showing the preparation of a negative for application to the cradle of our invention, and showing the negative applied to the cradle.
- FIG. 4 is an elevation of the cradle of our invention resting on a roll to which the negative is to be applied, and showing the negative in position to be applied.
- FIG. 5 shows the parts of FIG. 4 after the negative has been applied to the negative mounting roll or cylinder.
- FIG. 6 is a side elevation of a part of the adjusting mechanism for adjusting the position of the negative relatively to the cradle, and thereby the negative mounting roll.
- FIG. 7 is an elevation looking toward FIG. 6 from the right, but showing only a part of the mechanism.
- FIG. 8 is a diagrammatic view in isometric showing the printing cradle just prior to its being lowered into contact with the negative mounting roll for the application of the negative to the roll, the negative being not shown, for clarity.
- FIG. 9 is similar to FIG. 8, showing the cradle lowered into contact with the roll, and the longitudinal axis of the cradle now in exact alignment with the axis of rotation of the roll.
- FIG. I the outline of a machine in which two rolls l0 and 11 are shown in phantom.
- the two rolls 10 and 11 prior to their being mounted on the machine of FIG. 1, are assembled on a shaft S through utilization of suitable chucks K.
- Mounted also and suitably held on the shaft S are three roller bearings R, the inner races of which support the shaft for rotation relatively to the outer races.
- the outer races of the three bearings R are supported by three frame standards F so as to mount the rolls 10 and 11 for free rotation as will be referred to more in detail later.
- the roll 10 is the negative mounting roll to which a negative is to be applied by the apparatus shown just above that roll, and which apparatus constitutes the apparatus of our invention.
- the hand wheels 12 shown in FIG. 1 are utilized for the adjustment axially of shaft S and rolls 10 and 11.
- suitable gearing designated generally by reference numeral 16 is adapted to rotate the shaft 5 and the two rolls l0 and 11 for the carrying out of the process for which the apparatus is designed.
- the assembly of rolls 10 and 11 on shaft S and the rotation of the rolls do not form part of our invention.
- the cradle C of our invention is best illustrated in FIGSv 4. 5, 8 and 9.
- the general relationship of the cradle to the machine of FIG. I is probably best set forth in FIG. 2.
- end main plates 17 and 18 preferably connected at their upper ends by a cross plate 19.
- Vertical side plates 20 and 21 may be welded to plates 17, 18 and 19, so that the resulting cradle has a relatively rigid body thus formed by the several plates 17-21.
- the lower ends of the two main plates 17 and 18 are flared outwardly to form inverted Y's.
- the legs of these Y"s are designated by reference numerals 22, 23. 24, and 25.
- FIGS. 4 and 9 the cradle C is shown with the four arms 22-25 I lying against the periphery of the negative receiving roll 10.
- the arrangement of the legs 2225 of the apparatus is such that the cradle in the position of FIGS. 4 and 9 will inherently be held with its longitudinal axis, designated by the letters ab in FIG. 9, in exact alignment with the axis of the roll designated by letters c, a in FIG. 9.
- axis c, d is the axis of rotation of the roll 10 in the machine of FIG. 1, as will be quite apparent.
- end plates 30 and 31 For the mounting of the cradle of our invention in the machine, we may utilize end plates 30 and 31 as best illus' trated in FIG. 1. These plates are connected with a main cross plate 32, and on this main cross plate we support, through suitable brackets, four pulleys designated by the common reference numeral 33.
- a counterweight 34 is secured to one end of each of two cables 35. Each of the cables is reeved over the two pulleys 33 at each side of the machine and extends downwardly to an eye 36 at each end of the upper plate 19 forming an integral part of the cradle. It is obvious that our cradle C is now supported for vertical movement relatively to the frame of the machine through the two cables 35, and the pulleys 33, and the two counterweights 34.
- the use of the counterweights is extremely important since the cradle of our invention weighs approximately 150 pounds and this weight would damage the copper of the roll 10 were the cradle to be applied to the roll without the functioning of the counterweights. This is particularly true since the several Y legs 22-25 are naturally relatively narrow, and are in line contact with the roll 10 when applied thereto as illustrated in FIG. 9. Of course, other types of arms may be used, such as arms making point contact, and in that event, the counterweights may be of even greater importance. Naturally, the counterweights are readily adjustable, as may be required.
- lugs 40 For holding the cradle in its upward position illustrated in FIG. 8, we weld to the two main plates of the cradle, 17 and 18, a pair of lugs 40. These lugs 40 are each adapted to be contacted by a roller 39 on the end of an arm 41, it being obvious that when the rollers 39 of arms 41 are pressed against the lugs 40, the cradle may be held upwardly as in FIG. 8 and that when the arms 41 are lowered, as into the position of FIG. 9, the cradle will move downwardly against the roll 10. Plate is formed with slots 49 (FIGS. 4 and 5) for the passage of arms 41.
- the arms 41 are shown secured to a shaft 42.
- the shaft 42 is mounted in bearings 43 in the plates and 31, and is suitably keyed or otherwise secured to a ring gear 44.
- the ring gear 44 is in turn rotated by a worm 45 fixed to a shaft 46, the other end of which is secured to a hand wheel 47.
- a hand wheel 47 By rotation of the hand wheel 47,
- the pressure roller is designated by reference numeral 50. and is clearly shown in FIGS. 4, 5, 8 and 9.'Stub shafts '5l at each end of pressure roller 50 ride in slots 52 in the plates 17 and 18 of the cradle so that the pressure roller is guided for movement upwardly and downwardly in the cradle toward and away from the roll 10.
- a shaft 54 extending transversely between the plates 17-18, as best illustrated in FIG; 1.
- This shaft is formed with a gear 55 adapted for engagement with a worm 56 as best illustrated in FIGS. 4 and 5.
- the worm 56 is fixed on a shaft 57 that is rotated by a hand wheel 58, it being obvious now that rotation of the hand wheel will contribute rotation to the shaft 54'.
- the shaft 54 has at each end thereof an eccentric 57, and mounted on each eccentric 57 is a crank 59.
- the stub shafts 51 of the pressure roll 50 are fitted into the cranks 59 at 60. Obviously, movement of the two cranks 59 will bring about vertical movement of the stub shafts 51 and the pressure roller 50.
- FIGS. 3a and 3b Prior to indicating just how the negative utilized with our invention is applied to the cradle we shall refer to diagrammatic FIGS. 3a and 3b, since an understanding of the matter illustrated in these FIGS. will be extremely helpful in an understanding of our invention.
- the negative is designated by the reference letter N. While we have called it a negative, it is known also in the art as a bromide. We have selected the word negative because it has a broader connotation.
- the negative when prepared, is formed with three openings 60, these being locating holes utilized in the photographing process.
- Punches 63 are now utilized to form holes 64 in the negative, these holes being used for the locating of the negative on the cradle C.
- FIG. 3b one end of the negative is shown with the holes 64 applied to pins 65 that are carried by the cradle C, as will be described presently. While the three holes 60 are shown in FIG. 3b, in most cases the end of the negative in which the holes 60 are formed, will be removed through an accurate cutting apparatus, so that when the negative is applied to the cradle, only the holes 64 will be present and will be fitted over the pins 65.
- FIG. 4 one of the pins 65 is shown fitted into a plate 66.
- the plate 66 and the two pins 65 are well illustrated.
- the plate 66 must be adjusted relatively to the cradle in order to bring the negative into proper relation to the roller 10. It was also indicated that this was essential because the cradle is adapted for application to rollers varying from 8 inches in diameter to 16 inches in diameter.
- the plate 66 has at each of its opposed ends a bearing lug 68 whereby it may be mounted on opposed stub shafts 69 extending from the legs 23 and 25 of the Y portion of the two plates 17 and 18 of the cradle.
- the two shafts 69 are rotatable through sleeve bearings 70 in the legs 23, 25.
- One of the shafts 69 extends outwardly from the plate 23, and fitted about this extension of the shaft 69 is an adjusting arm 71 best shown in FIG. 6.
- a thumb piece 75 is secured to a shaft 76 that is threaded at 77 into the arm 23.
- the shaft 76 lies in a slot 74 in the arm 71. permitting some movement of the arm 71 relatively to the shaft 76. this movement being sufficient to bring about the ad justment of the plate 66 as it is moved with the arm 71 on the two stub shafts 697
- the thumb piece 79 is rotated, the threaded relation of its shaft 76 at 77 to the arm 23. will cause it to lock the arm 71 in an adjusted position. Adjusting movement is contributed to the arm 71 by a pin 78 that is integral with the arm 71 and extends there from as best illustrated in FIGS. 6 and 7.
- a longitudinal strip of tape T having both its upper and lower surfaces coated with pressure adhesive material is secured to roll in as close alignment with the longitudinal axis of roll 10 as possible.
- Strip T is shown in FIG. 8 applied to roll 10 and with its upper pressure adhesive surface spaced from and below the pressure roller 50 of the cradle C.
- the cradle C With the negative now on the plate 66 and held by the pins 65, the cradle C may be lowered from the position of FIG. 8 to the position of FIG. 9.
- the position of FIG. 9 is also illustrated in FIG. 4, where the plate 66 and the negative are shown in their effective position relative to the roll 10, the negative being tangential to the roll 10 and just under the pressure roller 50.
- the pressure roller 50 is now moved by the rotation of the hand wheel 58 to bring it into light contact with the leading edge of the negative whereby to press the negative against the roll 10. Because of the presence of the pressure adhesive tape T, the leading edge of the negative will now be adhered to the roll 10.
- the pins 65 are now removed from the plate 66, and the pressure roller 50 is moved further downwardly relatively to the cradle through further rotation of the crank wheel 58. This brings about upward movement of the cradle C and its legs 22-25 because of the movement of the roller 50 downwardly relatively to the cradle. With the pressure roller 50 thus in position pressing the negative against the roll 10, rotation of the roll 10 through operation of the motor 13 shown in FIG. I, will cause the winding of the negative about the roll 10 as illustrated in FIG.
- reference numeral 80 designates the leading edge of the negative adhered to the roll 10 by tape T.
- the trailing edge of the negative is designated by the reference numeral 81, and it will also be secured by the pressure adhesive tape T to the roll 10 in generally abutting relation to the leading edge 80.
- this phase of the invention may be varied.
- the method of our invention is extremely simple, requiring only the application of a negative to a cradle from which it may be readily released, the cradle being of any type that is inherently adapted to position its longitudinal axis, constituting the equivalent of the transverse axis of the negative, in exact alignment with the longitudinal axis of rotation of the printing roll or cylinder, when the cradle is applied to a printing roll or cylinder.
- the cradle C is inherently adapted to take an effective position on roll 10 and, therefore, no guiding means for the vertical movement of the cradle are shown.
- some confining means for the cable-supported cradle may be provided.
- the counterbalancing means 34 may require some confining and adjustment.
- a mounting cradle for a negative comprising a frame, support leg means for said frame adapted to be applied to the surface of a negative mounting roll whereby-to align said frame to said roll, said frame extending longitudinally of said roll when said leg means are applied thereto, said leg means being shaped so that when they rest on the surface of said roll, the longitudinal axis of said frame will be parallel to the longitudinal axis of said roll in a plane in which both said axes lie, and means on said frame for effecting the aligning of a negative or the like on said frame with the transverse dimension of the negative parallel to said longitudinal axes of the roll and cradle.
- the cradle has at least four spaced legs which when they rest on the roll correctly position the longitudinal axis of the cradle frame so that it is parallel to the longitudinal axis of the negative mounting roll.
- the cradle has securing means for holding the negative with one transverse edge thereof parallel to the longitudinal axis of the roll at the surface of the roll, so that it may readily be secured to the said surface of the roll.
- a pressure roller is mounted on said cradle parallel to the longitudinal axis thereof, and means for moving said pressure roller rela tively to said cradle from a position spaced from said negative to a position pressing the transverse edge of the negative against the negative mounting roll for adhering the negative to the said roll.
- said negative securing means are adjustable whereby to position the transverse edge of the negative to bring it into predetermined relation to the negative mounting roll so that it may be effectively secured to the said roll.
- said secur ing means are pins fitting into holes in said negative, said pins being removable whereby to release the negative for winding about the negative mounting roll between the said roll and the pressure roller.
- a method of applying a negative to a negative mounting roll or cylinder that comprises mounting the negative on a eradle that is designed to be applied to a roll or cylinder and to as sume inherently a predetermined position relatively to the longitudinal axis of the roll when so applied thereto, and so mounting the negative on the cradle that a transverse edge thereof will be parallel to the axis of the roll when said cradle is in said predetermined position.
- said securing means are pins fitting into holes in said negative, said pins being removable whereby to release the negative for winding about the negative mounting roll between the said roll and the pressure roller.
- a mounting frame means for mounting the cradle for vertical movement on said mount ing frame toward and away from said negative mounting roll, including counterbalancing means for balancing the weight of said cradle to facilitate its vertical movement on said mounting frame and to limit the weight applied to the surface of the negative mounting roll by the legs of said cradle 13.
- a pressure roller is mounted on said cradle parallel to the longitudinal axis thereof. means for moving said pressure roller relatively to said cradle from a position spaced from said negative to a position pressing the transverse edge of the negative against the negative mounting roll for adhering the negative to the said roll. the continued downward movement of said pressure roller is relatively to said cradle while said pressure roller is against said negative mounting roll, lifting said leg means of said cradle from said roll to permit rotation of said roll and pressure roller to wind the negative on said roll.
- a pressure roller is mounted on said cradle parallel to the longitudinal axis thereof, and means for moving said pressure roller relatively to said cradle as from a position spaced from said negative to a position pressing the transverse edge of the negative against the negative mounting roll.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Treatment Of Fiber Materials (AREA)
- Replacement Of Web Rolls (AREA)
- Rotary Presses (AREA)
- Confectionery (AREA)
Abstract
Description
Claims (14)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US74981168A | 1968-08-02 | 1968-08-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3559912A true US3559912A (en) | 1971-02-02 |
Family
ID=25015295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US749811A Expired - Lifetime US3559912A (en) | 1968-08-02 | 1968-08-02 | Method and apparatus for mounting a negative |
Country Status (7)
Country | Link |
---|---|
US (1) | US3559912A (en) |
DE (1) | DE1939328A1 (en) |
DK (1) | DK135527B (en) |
FR (1) | FR2014976A1 (en) |
GB (1) | GB1228685A (en) |
NO (1) | NO126725B (en) |
SE (1) | SE359259B (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1871234A (en) * | 1929-01-16 | 1932-08-09 | Kinatome Patents Corp | Container for films and means for handling the same |
US2578283A (en) * | 1949-02-17 | 1951-12-11 | Eastman Kodak Co | Take-up magazine for strip material |
US3324759A (en) * | 1961-03-09 | 1967-06-13 | Linotype Machinery Ltd | Registration of printing elements on printing presses |
-
1968
- 1968-08-02 US US749811A patent/US3559912A/en not_active Expired - Lifetime
-
1969
- 1969-07-24 NO NO03072/69A patent/NO126725B/no unknown
- 1969-07-25 GB GB1228685D patent/GB1228685A/en not_active Expired
- 1969-08-01 SE SE10820/69A patent/SE359259B/xx unknown
- 1969-08-01 FR FR6926598A patent/FR2014976A1/fr not_active Withdrawn
- 1969-08-01 DE DE19691939328 patent/DE1939328A1/en not_active Withdrawn
- 1969-08-04 DK DK418769AA patent/DK135527B/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1871234A (en) * | 1929-01-16 | 1932-08-09 | Kinatome Patents Corp | Container for films and means for handling the same |
US2578283A (en) * | 1949-02-17 | 1951-12-11 | Eastman Kodak Co | Take-up magazine for strip material |
US3324759A (en) * | 1961-03-09 | 1967-06-13 | Linotype Machinery Ltd | Registration of printing elements on printing presses |
Also Published As
Publication number | Publication date |
---|---|
FR2014976A1 (en) | 1970-04-24 |
DE1939328B2 (en) | 1971-11-18 |
NO126725B (en) | 1973-03-19 |
SE359259B (en) | 1973-08-27 |
GB1228685A (en) | 1971-04-15 |
DK135527B (en) | 1977-05-16 |
DE1939328A1 (en) | 1970-11-19 |
DK135527C (en) | 1977-10-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FIDELITY UNION TRUST COMPANY, TRUSTEE,NEW JERSEY Free format text: MORTGAGE;ASSIGNOR:CHRYSLER CORPORATION;REEL/FRAME:003832/0358 Effective date: 19810209 Owner name: FIDELITY UNION TRUST COMPANY, 765 BROAD ST., NEWAR Free format text: MORTGAGE;ASSIGNOR:CHRYSLER CORPORATION;REEL/FRAME:003832/0358 Effective date: 19810209 |
|
AS | Assignment |
Owner name: CHRYSLER CORPORATION, HIGHLAND PARK, MI 12000 LYNN Free format text: ASSIGNORS HEREBY REASSIGN, TRANSFER AND RELINQUISH THEIR ENTIRE INTEREST UNDER SAID INVENTIONS AND RELEASE THEIR SECURITY INTEREST.;ASSIGNORS:FIDELITY UNION BANK;ARNEBECK, WILLIAM, INDIVIDUAL TRUSTEE;REEL/FRAME:004063/0604 Effective date: 19820217 |
|
AS | Assignment |
Owner name: CHRYSLER CORPORATION Free format text: PARTES REASSIGN, TRANSFER AND RELINQUISH THEIR ENTIRE INTEREST UNDER SAID PATENTS ALSO RELEASE THEIR SECURITY INTEREST.;ASSIGNOR:MANUFACTURERS NATIONAL BANK OF DETROIL (CORPORATE TRUSTEE) AND BLACK DONALD E., (INDIVIDUAL TRUSTEE);REEL/FRAME:004355/0154 Effective date: 19840905 |