US2516613A - System of setting paper positioning parts on a printing machine - Google Patents

System of setting paper positioning parts on a printing machine Download PDF

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Publication number
US2516613A
US2516613A US623765A US62376545A US2516613A US 2516613 A US2516613 A US 2516613A US 623765 A US623765 A US 623765A US 62376545 A US62376545 A US 62376545A US 2516613 A US2516613 A US 2516613A
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United States
Prior art keywords
sheet
drum
scale
master
paper
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Expired - Lifetime
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US623765A
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English (en)
Inventor
Henry F Bray
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AB Dick Co
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Multigraphics Inc
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Priority to BE470002D priority Critical patent/BE470002A/xx
Application filed by Multigraphics Inc filed Critical Multigraphics Inc
Priority to US623765A priority patent/US2516613A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L17/00—Lithographic printing apparatus for office or other commercial purposes
    • B41L17/02—Lithographic printing apparatus for office or other commercial purposes for direct impression printing
    • B41L17/06—Lithographic printing apparatus for office or other commercial purposes for direct impression printing with curved printing surfaces, e.g. cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L19/00—Duplicating or printing apparatus or machines for office or other commercial purposes, of special types or for particular purposes and not otherwise provided for

Definitions

  • This invention relates to rotary planographic printing machines and its primary object is to provide simple means for enabling the quick and accurate setting of those parts of such machines which control the position of the paper, to cause the image to be printed in the desired location on the paper sheet.
  • the customary method has been to give an approximate setting to the portions of the machine which con trol the position of the paper; then print one or more sheets to test the location of the imageprint ed; then readjust the positioning means to change the location of the image on the paper from the trial sheet more nearly to the position desired; take another imprint and "again readjust the machine-until finally the proper position is obtained.
  • it has usually resulted that at least three sheets of paper and frequently more are wasted and considerable time consumed before the machine is ready to start the real printing operation.
  • the loss of paper is increased in a machine 'having an automatic paper feed because the opera tor in feeding a test sheet through'a machine under power is very likely to feed two or three sheets before he can stop the machine.
  • the trial and error method have outlined reit nism .of another character.
  • I avoid the above mentioned losses in paper sheets, m-aster life, and op'erators time, and cause the production of more uniform imprints by providing a system of scales related to the master sheet, to the sheets of paper and to the printing machine, enabling the setting of the proper parts at once to cause the image to appear in the desired location on the sheet.
  • the set of two scales of different characterrelating to the master sheet and paper may if -desired be provided on a device independent of each s'ultsalso in a considerable loss of time of the operator in making the necessary readjustments and tests.
  • This loss' is increased in an offset printing machine Where the position of the offset cylinder is changed with each readjustment of the paper control, making it necessary to clean the image from the offset blanket every time a shift is made to change the position of the image on the paper, and there is a time loss while the machine makes the necessary preliminary rave-- luti'on's to build up the successively changed images on the blanket.
  • one scale of each set would be the same scale; that is to say, that subdivisions along the longitudinal edge of the master sheet when mounted on the drum in proximity to its cooperating scale on the machine is both the scale for the master sheet and the scale for the drum.
  • Fig. 1 is a plan partly broken away of an illustrative offset printing machine embodying my invention
  • Fig. 2 is a vertical section of such machine in a plane indicated by the line 22 on Fig. 1 and disclosing various parts adjusted by means of my scales, the scales, however, not appearing in this figure
  • Figs. 3 and 4 are enlarged cross sections through the three drums of the offset printing machine showing the parts in two different positions
  • Fig. 5 is a detail illustrating the use of the clamp on the master drum for holding a difierent master from that shown in Fig. 3
  • Figs. 6 to 13 inclusive are diagrams, Fig. 6 showing the application of a scale for a master sheet adapted for mounting in one type of clamp
  • Fig. 6 showing the application of a scale for a master sheet adapted for mounting in one type of clamp
  • clamps 21 and 28 mounted in the gap in the drum and adapted to engage the leading end and trailing end of the master sheet A.
  • the offset drum is provided with claims 31 and 38 to engage and hold the ends of an offset blanket B, and a paper gripper 39.
  • the paper gripper 39 is substantially the same as that shown and described in Patent No. 2,165,231.
  • this gripper comprises an anvil H0 in the form of a yoke pivoted to the ofiset'drum 2B, and a series of gripper fingers H I which are secured to a rod H2 carried by the offset drum and normally drawn into engagement with the anvil by springs H3.
  • the gripper fingers are moved away from the anvil under control of a cam i I 4 mounted on the frame plate in and which engages a roller H5 carried by a. lever H6 secured to one end of the rod H2.
  • abutments H1 integral therewith act as stops to position the forward edge of the sheet fed by the feed rolls H and 12.
  • the platen drum is mounted on a shaft 4! which may be eccentrically mounted in a pivoted yoke 42 supported by springs 43 tending to push the yoke toward the offset drum.
  • springs 43 encircle rods 45 which extend through a cross bar I5.
  • Suitable adjusting nuts are threaded on rods 45 and act to limit the pressure of the platen toward the offset drum.
  • the three drums I0, 20 and 3B areprovidedwith gears 26, 3E and 43 respectively. These gears mesh with each other in succession, and eachgear has a pitch circle corresponding to that of the surface of the drum as equipped for printing.
  • the diameter of the pitch circle of a gear 26 is the same as the diameter of'the periphery of the master 7 sheet A on the master drum.
  • the pitch circle is similar to Fig. 10 but for a different master sheet;
  • Fig. 12 showing the scale for the paper locating in another region the desired position for the image;
  • Fig. 13 showing the setting of the drum and gear corresponding to the respective image locations of Figs. 11 and 12;
  • Figs. 14 and 15 are details illustrating the adjustment of the gear on the master drum which controls the position of the offset drum, Fig. 14 being a cross section of line I l-l4 of Fig. 15; Fig.
  • Fig. 16 is a plan of a master sheet equipped with my sets of scales for positioning the image both longitudinally and laterally;
  • Figs. 17 and 18 are enlarged views partly broken-away of opposite faces of a strip which may carry two scales of different character, one for the master sheet and the other for the paper;
  • Fig. 19 is a diagrammatic illustration of indicia on the master drum corresponding to the scale of Fig. 17 and indicia on the paper controlling gear corresponding to the scale of Fig. 18.
  • the frame of the machine shown includes a pair of upright plates 10 and H spaced parallel with each other by a suitable base indicated at I2 and various cross rods, some of which are shown at 13. Mounted between the plates are the three main cylinders of the offset printing machine, namely, the master drum 20, the offset drum 30 and the platen drum 40.
  • the master drum 20 is mounted on a supporting shaft 21, which is mounted in eccentric bearings carried by the frame plates 10 and H so that the turning of the shaft bearings may align the master drum 20 with the offset drum 3D.
  • the offset drum may be tight or loose on its shaft 31 mounted in the frame plates.
  • the master drum 2!! is provided with a pair ofthe gear 36 is the same as that of the blanket B mounted on the offset drum and the pitch circle of the gear 46 is the same as that of the platen 4B.
  • the gears 36 and 46 may be fixed to their respective drums.
  • the gear 26 is rigid in operation with the drum 20 but is adjustably clamped thereto to change the relation of the offset drum to the master drum. .In the embodiment shown it is the relation of this gear 26 with reference to the drum which is indicated by my special system of scales so that the relation of a sheet of paper to be gripped by the offset drum, as shown, or by the platen drum in other forms of the machine with reference to an image carried by the master sheet on the master drum may be made known prior tothe feeding of such paper to the machine.
  • a preliminary sheet control or timing device designated 1n. 7
  • This control includes upper and lower rotatable feed rolls 1
  • the feed roll of H is carried in a pivoted yoke 14, while the lower feed roll 12 is continuously rotated.
  • the sheet is fed by hand or automatic mechanism between the separated rolls 1i and 12 until the forward edge of the sheet abuts the stop fingers 13.
  • a cam 35 on the offset drum coacts with a roller 11 on the yoke 14, rocking the yoke and causingthe upper paper feed roll 1
  • the open mouth of the gripper '39 tm the oflset Associated with the master drum is "a repel lent applicator system W andaninRing system operation, the master sheet A on the drum *2 received repellent from thre'arepelleht form; roll 55- and: ink from r the inking r011 65.
  • the reverse-image on the" blanket thencoacts with-a sheetof paper passing between the blanket-*dTum-and' platen roll and is printed'as a positive image-on the sheet.
  • the paper may befed automatically to the gripper on the oifsetdrumg as- I set out in "the patent of F.-- Eu Curtis mentioned. 'or-it may be fedmanuallyto the controlling device 101*
  • I have shown herein a manual j sup portion the paper.
  • the paper is discharged topassinto a suitable receptacle or receiving tray.
  • the paper is. iorcibly discharged-1 train the ofi' set drum. by thexgrippen'mechanism-fl. i
  • i For a plate 95:
  • drum I gear delivers motion to. th'E TOflSEt d-rmm and-.platen.
  • mentor gearingthat when the-machine is oper ating, a sheet' o-f paper is placed between the tworol1ers-of a feed roll, such sheet undenthe control-'of thecam on-the ofiset drum-is-gri-pped between the feed-rol-lers and-presented to-the cam-controlled-gripper onthe offset; drum and-isthen drawn through theregionof printing-contact by such gripper" and delivered tothe receiving --tr'ay.- I Accordingly, the I time I in -each cycle ofoperation; when the printing takes effect is determined by i the position of the-ofiset drum and when that drum is rotated-relativeto the master drum the location of the-image on the sheet being printed is changedwith reference' to its location on the master sheet.
  • gear 2Gr may be provided with acylindricalflange (Fig. 14) which occupies-a rabbetedredge in the: drum 20- and which provides a cylindrical surface for carrying the scale D. As shownin Figs. 14 and-1'5, this-flange is -adjus table. :by
  • The'two scales C and "D may; if desiredybe opposite-facesof a single measuring strip.
  • Both scales C and D maybe placed on the same rule or strip E.
  • the scale C for measuring the mat is just the-same as the same spacing and;designationsas the corresponding scale C on thedrum .20.
  • the alphabetical scale D on; the other face of the strip E for measuring the paper is the same as the scale D on the flange 25 of the gear 26.
  • each scale might have any'desired designation or indicia
  • each scale might have any'desired designation or indicia
  • the feeding tray 80 is provided with a transverse scale F and the receiving tray 90 with a transverse scale G which scales are available to indicate the position of the corresponding paper guides 81 and 9! on such trays.
  • the position of the image laterally on the sheet is most conveniently selected by placing a sheet of paper over the master sheet and holding the sheets up to the light and shifting the paper in one direction or the other, as, for instance, by the thumbs of the operators two hands, until the image is properly positioned laterally.
  • I provide a transverse scale H across the bottom of each master sheet beyond the printing'region. This scale corresponds in spacing and designations to each of the scales F and G.
  • each scalev is read ly observedfrom .a person facing it at ,the end of the machine, the two letter scales. longitudinally align with each other and the two.
  • I may conveniently print such scales on the master sheetin a region beyond the normal printing area.
  • This vertical scale takes the place of a separate scale CI for measuring the image on the master sheet as its location may. readily be read directly on the mastersheet. For instance, as'shown in Fig.
  • the top of the image on the master sheet comes at the inumericalr'l 'onthe two scale C
  • To measure-theidistance of paper I may turn the master sheet crosswise and use the alphabetical portion of .the scale H which extends across the bottom 'thereof to measure the space down from the top of the paper sheet where the image is to start;
  • the scale H To facilitate the use of the scale H to measure the. distancefromfthe'top of the work sheet to the. desired position of the top of the image, I make the. distancefrom the zero mark to the firstletter ..A of the. alphabetical scale I-I- equal to the distance which must be provided to care for that portion of; the work sheet which is held by thepapergripper 39.
  • the distance between the lines of the alphabetical 'scalegD, D and'H may. be equal to a multiple writer spacing-of one-.thirdof an inch .istoo.
  • I may arrange to omit the numeral scale C on the drum and use the scale'C down the margin of the master-sheet as the drum scale. .This requires the mounting of the master before other. adjustment of the. gear. is madeand preferably locating the edge of the master as near as practicable to the gear.
  • the master sheet maybe mounted on top of it and its scale take precedence over the scale formed on the drum. However, the spacing being the same, there is no liability of confusion if both markings are visible. Itwill be'observedthat if the numeral scale down the vertical edge of the master sheet acts as, or takes the place of the numeral scale on the drum, then while one has two pairs of scales, one for the drum and its gear and the other for the master and the paper sheet, one scale of each pair (in this case the numeral scale) would be the same number. Thus in any case there is in effect two sets of scales, one for the machine and the other for the master and paper, each set comprises two scales of respectively difierent character.
  • a printing machine having a printing drum, means to secure a master sheet thereon, and a member adjacent to and adjustable relative to the drum to control the up and down position of the text on a sheet to be printed, the combination of a pair of subdivided scales having identical indicia to measure the distance from the top of the master sheet to the top of the text thereon, one scale of said pair being afiixed to the drum and extending annularly thereon adjacent said adjustable member, and the other being detached from the machine, and a second pair of subdivided scales having identical indicia difiering visibly in character from the indicia of the first named pair of scales to measure the desired distance from the top of the sheet to be printed to the top of the text to be printed thereon, one scale of said last named pair being afiixed to said adjustable member and extending annularly relative to the drum parallel with and adjacent to the scale of the first named pair which is attached to the drum, the other scale of said last named pair being detached from the
  • a printing machine having a printing drum having means to secure difierent types of master sheets thereon, and including an annular member adjacent to and adjustable about the axis of the drum to control the up and down position of the text on a sheet to be printed
  • a second pair of identically subdivided scales having identicalindicia differing visibly in characterfrom the indicia of the first named pair of scales to measure the desired distance from the top of the sheet to be printed to the top of the text to be printed thereon
  • one scale of said last named pair being afiixed to said annular member and extending annularly relative to the drum parallel with
  • a printing machine having a master cylinder, means thereon to secure a master sheet on the cylinder with the top thereof in a predetermined position, an offset drum, a platen drum, paper gripping means on one of said drums, a positive geared connection between said cylinder and gripper-carrying drum, said connection in- 11 eluding an annular member adjacentto and adjustable about the axis of said cylinder to permit the cylinder to be rotated relative said lastnamed drum to adjust the up and down position of the text on the sheet to be printed, the combination of a pair of subdivided scales carried by the printing machine and extending parallel with and adjacent to each other to indicate respectively the distance from the top of the master sheet to the top of the text thereon and the distance from the top of the text to the top of the sheet to be printed, the former extending circumferentially about and movable with said cylinder adjacent said annular member and the latter scale extending circumferentially about and movable with the said annular member adjacent to and parallel with the former scale

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)
US623765A 1945-10-22 1945-10-22 System of setting paper positioning parts on a printing machine Expired - Lifetime US2516613A (en)

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Application Number Priority Date Filing Date Title
BE470002D BE470002A (de) 1945-10-22
US623765A US2516613A (en) 1945-10-22 1945-10-22 System of setting paper positioning parts on a printing machine

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US623765A US2516613A (en) 1945-10-22 1945-10-22 System of setting paper positioning parts on a printing machine

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2703237A (en) * 1950-11-22 1955-03-01 Pitney Bowes Inc Stop positioning scales for buckle type sheet folding machines
US2780169A (en) * 1952-10-13 1957-02-05 Fortner Turner Marvin Margin marked duplicator master set
US3330210A (en) * 1965-09-23 1967-07-11 Richard W Hobbs Method of locating printing image on copy sheets

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1451142A (en) * 1921-04-13 1923-04-10 Dick Co Ab Duplicating machine
US1644597A (en) * 1924-11-04 1927-10-04 Firm Deutsche Maschb Und Vertr Flexible printing sheet
US2172279A (en) * 1938-07-01 1939-09-05 Jr Evan L Hamilton Aligning arrangement for printing presses
US2201953A (en) * 1939-08-03 1940-05-21 Remington Rand Inc Top printed stencil and method of making
US2205998A (en) * 1937-09-01 1940-06-25 Addressograph Multigraph Planographic printing plate
US2364942A (en) * 1942-03-19 1944-12-12 L C Smith & Corona Typewriters Duplicating machine
US2401020A (en) * 1942-08-21 1946-05-28 Ditto Inc Duplicating machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1451142A (en) * 1921-04-13 1923-04-10 Dick Co Ab Duplicating machine
US1644597A (en) * 1924-11-04 1927-10-04 Firm Deutsche Maschb Und Vertr Flexible printing sheet
US2205998A (en) * 1937-09-01 1940-06-25 Addressograph Multigraph Planographic printing plate
US2172279A (en) * 1938-07-01 1939-09-05 Jr Evan L Hamilton Aligning arrangement for printing presses
US2201953A (en) * 1939-08-03 1940-05-21 Remington Rand Inc Top printed stencil and method of making
US2364942A (en) * 1942-03-19 1944-12-12 L C Smith & Corona Typewriters Duplicating machine
US2401020A (en) * 1942-08-21 1946-05-28 Ditto Inc Duplicating machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2703237A (en) * 1950-11-22 1955-03-01 Pitney Bowes Inc Stop positioning scales for buckle type sheet folding machines
US2780169A (en) * 1952-10-13 1957-02-05 Fortner Turner Marvin Margin marked duplicator master set
US3330210A (en) * 1965-09-23 1967-07-11 Richard W Hobbs Method of locating printing image on copy sheets

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