US1800373A - Press for producing printing surfaces on cylinders - Google Patents

Press for producing printing surfaces on cylinders Download PDF

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Publication number
US1800373A
US1800373A US382923A US38292329A US1800373A US 1800373 A US1800373 A US 1800373A US 382923 A US382923 A US 382923A US 38292329 A US38292329 A US 38292329A US 1800373 A US1800373 A US 1800373A
Authority
US
United States
Prior art keywords
cylinder
carriage
plate
press
bed
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
US382923A
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English (en)
Inventor
Herman C Boedicker
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.)
Individual
Original Assignee
Individual
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
Priority to BE378414D priority Critical patent/BE378414A/xx
Application filed by Individual filed Critical Individual
Priority to US382923A priority patent/US1800373A/en
Priority to CH156769D priority patent/CH156769A/fr
Application granted granted Critical
Publication of US1800373A publication Critical patent/US1800373A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/18—Curved printing formes or printing cylinders
    • B41C1/184—Curved printing formes or printing cylinders by transfer of the design to the cylinder, e.g. from a lithographic printing plate; by drawing the pattern on the cylinder; by direct cutting of the pattern on the cylinder

Definitions

  • the object of the present invention is to provide a press adapted to produce printing surfaces upon printing cylinders, by transfer from flat platescsuch as zinc or aluminum lithographic plates.
  • the specific object of the invention is to provide apparatus capable of commercially producing printing surfaces upon continuous-surface copper cylinders for use in lntalio textlle' which has heretofore been con-,
  • Figure 2 is a plan view of the same
  • Figure 3 is a plan view of the press frame and bed showing clamping and registration devices in position
  • Figure 4 is a detail sectional view of a Vernier centering device
  • Figure 5 is a fragmentary enlarged view of the centering device
  • Figure 6 is a schematic plan view of the adjustable stop devices for the blanket cylinder shifting means.
  • the press comprises a frame having parallel side members 1 connected by the end frame members 2, a.
  • the side frame members are provided on their exterior surfaces 35 with track-ways 3 for receiving and guiding the traveling carriage upon which the transfer roller and associated elements are mounted.
  • the traveling carriage comprises two vertical frame members 4, each member at its lower end being provided with spaced rollers 5 which ride upon the lowermost track-way 3.
  • the two frame members 4 are suitably connected by tie-rods 6 or by any other suitable connecting members.
  • Each side frame member 3 has mounted thereon a rack 7
  • the purpose of the two parallel racks is to cause bodily movement of the carriage simultaneously with the rotation of the blanket cylinder when the latter is' rotated manually, by the turning of a crank.
  • the blanket cylinder is shown at 8. It is provided with a sheath of rubber or other suitable transfer material and at each end it is provided with a large gear wheel 9- in mesh with one of the two racks 7.
  • A. shaft 10 extends through the blanket cylinder and is received at each end by a bearing block 11 which is suitably channeled to have up and down movement in a vertical passageway 4m formed in the appropriate frame member 4 of the carriage.
  • Each block at its base is engaged by a spring 12mm and at its top each block carries an internally threaded sheave for receiving a screw 12, the latter being headed at its lowervend'.
  • Intermediate the side frame members, 1 is supported the bed 17.
  • the bed is adapted to support the flat printing plate 18. Also, at its right hand end (Figs. 1 and 2) the bed is adapted to support a proof sheet.
  • Screw 12 extends upwardly through a bushing 32 seated within cross-head 33 and extends above the cross-head being connected to an operating hand lever A.
  • the construction is exactly the same as to block 11, the screw (numbered 12m), and upper shaft extension.
  • the cross-head at said opposite side of the machine is numbered 33w.
  • the shaft 1200 has connected thereto a crank arm 34 joined by a link 35 with a crank arm 36 on shaft 12.
  • a stop collar 37 adapted to contact with the lower surface of the 00 appropriate cross-head 33 or 3305*, as the case may be.
  • Each of the frame members 4 is provided with an upwardly projecting extension 38 formed with a slide-way 39 adapted to receive a bearing block 40 for mandrel 41. Headed in a suitable block 42 bolted to the bearing block 40 is a screw 43, the screw passing through a suitable bearing (not shown), the bearing being clamped in position within a-boss 44 by. means of set screw 45w. Screw .43 is rotatable relatively to, block 42. Boss '44 is formed as part of cross-head 45 removably securedtd-frame extension 38. Each screw 43 carries at'its top a hand wheel 47. Each bearing block may carry a pointer for registration with a scale 48 carried by the frame extension 38. The bearing blocks 40' maybe placed in various positions relatively to. the blanketcylinder so as to support printing cylinders of various diameters. A printing cylinder 49 is shown in Figsfl'and 2.
  • the carriage may be moved longitudinally of the bed by rotating a crank 51, the latter being connected to a shaft 52 sup ported in the frame members 4.
  • Shaft 52 carries two pinions 53, each engaging one of the gear wheels 9 on the blanket cylinder.
  • each gauge comprises a supporting bracket 19 provided with spaced apertures to receive the studs 18, the bracket being provided with guide-ways for receiving the scale 20, and with a set screw 21 for clamping the scale in the guideways when the'scale has been adjusted to proper position.
  • a Vernier plate 22 is fixed to bracket 19 adjacent theslide-way and clamped to the-scale by means of set screw 23 is a block 24 having a screw 25 fixed to the bracket 22 and passing through a threaded thumb-wheel 26.
  • thumb-wheel 26 When approximate adjustment of the scale has been reached, a fine and exact adjusttment may be equally determined by loosening stud 21 and turning. thumb-wheel 26.
  • each-plate 18 will be marked with registry marks for squaring the plate, as for example themarks'b, Fig. 3, and with one or more marks for centering the plate, as for example the mark 0, Fig. 3.
  • one of the scales 20 will be so adjusted as to lie exactly in register with one of the square lines 6.
  • a readmg of the Vernier will then be made and the second scale will be adjusted to exactly that reading.
  • the plate will then be moved so as it lies into exact squared alignment.
  • clampin means as for example the clamp 27 pivote at each end upon the frame member 1 and movable into andout of clamping position by the crank 28.
  • clampin means as for example the clamp 27 pivote at each end upon the frame member 1 and movable into andout of clamping position by the crank 28.
  • a Vernier scale which may be mounted upon the clamp 27 or on the frame. It consists of the parallel bracket arms 29 which support between them a bar 30 upon which islongitudinally movable a pointer 31. Bracket arms 29 also support between them, for longitudinal movement, a flat scale 32.
  • the pointer has an upwardly projecting member for registration with the centre line of the lfs plate and a rearwardly projectin member for registration with the centre hne of the plate and a rearwardly'projecting member for registration with the scale 32.
  • scale 32 is carried at its right hand end by a threaded shaft 32 which passes through the right hand bracket arm 29 which may also pass through a suitable aperture formed. in a second bracket arm. 29x.
  • thumb-wheel directionby rotating thumb-wheel 34 Threaded upon shaft 33 is a thumb-wheel directionby rotating thumb-wheel 34.
  • a pointer36 aiid- spaced on the periphery'of thumb-wheel 34 are? the numerals 1 to 9, and also 0.
  • the threadsoii shaft 33 and thumb-wheel 34 may be one hundred to the inch, for example, and the movement from 0 to 1, etc., of the thumb-wheel may shift the scale 32 one-thousandths of an inch.
  • pointer 31 In the operation of the centering Vernier, after the plate has been squared, pointer 31 will be moved until its forwardly projecting point lies exactly in register with the centering line. Should the fine line 3100 of the ointer lie, at such time, a little to the left or-a little to the right of a scale line, thumbwheel 34 will be rotated sufiiciently to move the scale one or more thousandths of an inch until a line'on the scale and line 3110 on the pointer are precisely in register. This will fix accuratelyjhereading for centering the successive plates: 5.
  • a cylinder 49 of any diameter within the limits of ad 'ustment of blocks 40, is installed, and print 111g plate 1 8'bearing the design or other matter to be transferred to cylinder 49 is accurately fixed in position on the bed by the squaring, centering and clamping means above described.
  • the screws 12, 12:0 may be made sectional and means pro- 4 1 vided for slightly shortening or lengthening it to compensate for differences in thickness of printing plates so as to insure lack of contact between the blanket or transfer cylinder 8 when lever A is in--neutral position.
  • each of the said screws may be threaded into an enlarged upper part a and the member 37 heretofore termed a stop collar may be employed as a lock nut to hold the two sections against relative rotation when the lower section has been given a required rotary movement to change the length'of the screw.
  • each hand wheel 47 will be rotated to bring the cylinder 49 in such osition that it also will lie slightly out of contact with. the transfer cylinder.
  • a proof may first be take'nby inking the ,with the plate, past neutral position and into contact with the cylinder 49 with a pressure predetermined by the means above described. Crank 51 may then be rotated to cause traverse of the carriage, rotation of the transfer cylinder and rotation of cylinder 49 by frictional contact with the transfer cylinder.
  • a press comprising a frame, a bed for supporting a printing plate,'a carriage movablerelatively'to said bed, a transfer cylinder supported by the carriage, supporting means'on the carriage providing an axis of rotation for a cylinder.
  • a press comprising a frame, a bed for supporting a printing plate, a carriage movable relatlvely to said bed, a transfer cylinder supported by the carriage, supporting means on the carriage providing-an axis ofrotation for a cylinder to receive a surface impression from the transfer cylinder, and adjustable means for bringing the transfer cylinder alternately into contact with a plate on said bed, and with a cylinder to receive a surface impression onsaid carriage supporting means, with predetermined pressure, either alike in the two cases, or relatively different.
  • a press comprising a frame, a bed for supporting a printing plate, acarriage movable relatively to said bed, a transfer cylin- I der supported by the carriage, supporting means on the carriage providing an I cylinder, the carriage and said supporting means on the carriage being so constructed and related that cylinders of varying diameters may be supported in positions to receive surface impressions from the transfer cylinder.
  • a press comprising a frame, a bed for supporting a printing plate, a carriage movable relatively to said bed, a transfer cylinder supported by the carriage, supporting means on the carriage providing an axis of rotation for a cylinder to receive a surface impression from the transfer cylinder, and adjusting means for the supporting means on the carriage, whereby said supporting means may be adjusted toward and from the axis of the transfer cylinder so that cylinders of varying diameters may be held by said supporting means on the carriage.
  • a press comprising a frame, a bed for supporting a printing plate, a carriage movable relatively to said bed, a transfer cylinder supported by the carriage, supporting means on the carriage providing an axis of rotation plate I for a cylinder to receive a surface impression from the transfer cylinder, and means for relatively moving said supporting means on the carriage and the transfer cylinder until the two are brought into contact underpredetermined pressure including means on the carriage and means associated with the cylinder which receives a surface impression from the transfer cylinder for indicating the position of the axis of said last named cylinder relatively to the axis of the transfer cylinder.
  • a press comprising in combination, a frame, a supporting surface for a printing plate, a supporting surface for a transfer blanket, the latter supporting surface and the supporting surface for a printing plate being relatively adjustable toward and from each other and relatively movable to permit rolling contact between a printing plate carried by the one and a transfer blanket carried by the other, and supporting means providing an axis of rotation for a cylinder to receive impressions from the transfer blanket, the said supporting means and the supporting surface for the transfer blanket being individually adjustable toward and from each other.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
US382923A 1929-08-02 1929-08-02 Press for producing printing surfaces on cylinders Expired - Lifetime US1800373A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE378414D BE378414A (is") 1929-08-02
US382923A US1800373A (en) 1929-08-02 1929-08-02 Press for producing printing surfaces on cylinders
CH156769D CH156769A (fr) 1929-08-02 1931-03-23 Presse pour produire des surfaces d'impression sur des cylindres.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US382923A US1800373A (en) 1929-08-02 1929-08-02 Press for producing printing surfaces on cylinders

Publications (1)

Publication Number Publication Date
US1800373A true US1800373A (en) 1931-04-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
US382923A Expired - Lifetime US1800373A (en) 1929-08-02 1929-08-02 Press for producing printing surfaces on cylinders

Country Status (3)

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US (1) US1800373A (is")
BE (1) BE378414A (is")
CH (1) CH156769A (is")

Also Published As

Publication number Publication date
BE378414A (is")
CH156769A (fr) 1932-08-31

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