US2925029A - Printing machines - Google Patents

Printing machines Download PDF

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Publication number
US2925029A
US2925029A US715036A US71503658A US2925029A US 2925029 A US2925029 A US 2925029A US 715036 A US715036 A US 715036A US 71503658 A US71503658 A US 71503658A US 2925029 A US2925029 A US 2925029A
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United States
Prior art keywords
blanket
mask
cylinder
printing
master
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Expired - Lifetime
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US715036A
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English (en)
Inventor
Patalon Francis Ralph
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AB Dick Co
Original Assignee
Multigraphics Inc
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Publication date
Application filed by Multigraphics Inc filed Critical Multigraphics Inc
Priority to US715036A priority Critical patent/US2925029A/en
Priority to GB2404/59A priority patent/GB846836A/en
Priority to BE575512A priority patent/BE575512A/fr
Priority to FR786381A priority patent/FR1224293A/fr
Priority to DEA31320A priority patent/DE1121627B/de
Priority to CH6945359A priority patent/CH369478A/de
Application granted granted Critical
Publication of US2925029A publication Critical patent/US2925029A/en
Anticipated expiration legal-status Critical
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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
    • 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

  • FIG 7 PRQPUCTION ORDER .Joa TICKET DATE A ASS'Y NO. owe. MAT'LSPEC. SCHEDULE 7/ H-4-5'7 o ⁇ 2a4 A-5678 5-9012 l-e-sa QUANTITY HDENTJFICATlON FACTORY
  • lithographic, masters utilized in offset printing machines are now to a great extent made of specially prepared paper.
  • the paper masters afford many-important advantages, including easier typing, proof reading, and correcting, and also are moderate in price as compared with metal masters.
  • Paper masters of this kind comprise a high wet strength paper towhich an appropriate coating is applied; a preferred form of lithographic master and the method of preparing such masters is described in detail in United States Letters Patent No. 2,534,650 to S. Worthen, issued December 19, 1950.
  • These paper-base lithographic masters may be provided with perforated areas permitting detachment of portions thereof to afford a means for removing a part of the master in the reproduction of certain kinds of data.
  • a principal object of the invention is a new and improved offset printing machine including a. novel means for varying the content of the printed data.
  • Another object of the invention is a new and improved offset printing machine which affords a convenient and effective means for modifying a portion of the printed data with each printing operation or after any desired number of printing operations.
  • a more specific object of the invention is a new an improved offset printing machine including a blanket cylinder comprising means for changing the data printed from a given master.
  • Another objectof the invention is a new and improved offset printing machine comprising a blanket cylinder which includes an adjustable line selector device for preventing printing of all but selected lines of text from a master to a work sheet.
  • Fig. 1 is a perspective view of a planographic offset printing machine constructed in accordance with one embodiment of the invention
  • Fig. 2 is a substantially simplified elevation view of the printing machine of Fig. 1;
  • Fig. 3 is an enlarged perspective view of the blanket cylinder of the planographic printing machine of Fig. 1;
  • Fig. 4 is an enlarged cross sectional view of the blanket cylinder of Fig. 3;
  • Fig. 5 shows a planographic master which may be utilized in the offset printing machine of the invention in connection with a particular kind of systems job;
  • Fig. 6 illustrates one printed form which may be reproduced in the printing machine utilizing the master of Fig. 5;
  • Figs. 1 and 2 illustrate a rotary planographic offset printing machine 20 constructed in accordance with one embodiment of the invention.
  • the printing machine 20 comprises a pair of spaced frame plates 22 which are mounted upon a suitable base 21.
  • a form cylinder 25, a blanket or offset cylinder 26, and a platen or impression cylinder 27 are rotatably mounted between the frame plates 22 for cooperation with each other in the usual manner.
  • a paper feed table 28 is provided to afford a means'for introducing work sheets into the nip of the offset and platen cylinders 26 and 27.
  • the several cylinders maybe driven by a suitable motor through driving belts, pulleys, and like means in conventional manner.
  • a planographic form or master is mounted upon the cylinder 25 and is inked by a suitable inking mechanism which may, for example, include a pair of form rolls 35 which receiveink from an ink fountain (not shown) mounted within the housing 36 and which transfer the ink to the planographic master.
  • An aqueous ink repellent in applied to thep'Iano-graphic'plate in conventional manner by a: repellent applicator roll 38 which is supplied with the ink repellent by a supply system (not shown) mounted within a housing'39.
  • the line selector device comprises a: mask M and'clampin'g' means forthe mask M, the clamping means comprising a pair of rectangular plates 41a and 41bfacing each other; plurality of pointed pins 60 are mounted on and-extend from the inner surface of the plate 4 1a into a corresponding plurality of holes 60a in the" plate 41b.
  • the two plates 41a and 41b form the two ar ms of a clamp'and are hinged upon a spindle 42.
  • the support means'for the clamp comprises a Z-shaped sliding bracket 45' (see Fig.
  • the center panel of the Z-shaped sliding bracket45' issecured, by means of a pair of square-sectioned studs 47 and pressure springs 49, to a sliding means for guiding movement of the mask M relative to the blanket cylinder.
  • the sliding means comprises a rectangular rail 46 which is provided with a longitudinal slot'51 in which the squaresectioned portions of the studs 47' are engaged for sliding movement,'the widthof the square portions of the stud being only very slightly smaller than the width of the groove 51.
  • Each of the springs 49 iscompressed between a cup washer 52, which bears upon an adjusting nut 48 threaded upon the stud 47, and awasher 53' which engages the rear face of the rail 46.
  • the springs 49 maintain the center panel of the sliding bracket 45' in bearing contact with the rear face of the rail 46, permitting the bracket to slide along the rail in frictional contact therewith. Moreover, the springs 49 tend tohold the plates 41a and 41b in firm engagement with each other, since the plate 41b, being freely hinged on the shaft 42, re'sts'upon a blanket clamp 54b, while the plate 41a is pulled against the plate 41b when the sliding bracket 45 is brought to bear against the rail 46 by the biasing,
  • The' mask M is held. in position, on the one hand, by
  • the arrangement is such that the catch 65 engages in one of a series of positioning notches 66 in the top edge of the rail 46 whenever the register pointer is aligned with a particular graduation on the scale 59;
  • the engagement of the catch 65 in the positioning notch 66 prevents lateral movement of the mask and clamp along the rail, thereby preventing any undesirable shifting of the mask which could otherwise take place during operation of the printing machine, for'in'stance as a result of vibrations.
  • the two ends of the rail. 46 are-afiixed to the lead end blanket clamp 54b by suitable means such as the two screws 62.
  • a repetitive document 70 (Fig. 6), commonly known as a route sheet :or job sheet,whichmay'includea description 71 of the item to be maufactur'edfrefcrred to hereinafter as repetitive data, and a' list" 72 of the individual operationswhich must be performed in the different manufacturing departments of the' factory, referred to he'reihafteras variable data.
  • the route sheet or sheets 70 are accompanied by a set'of smaller sheets or tickets, usually known as labor' tickets or job. tickets, each corresponding to" aparticular operation; to beperformed in onefactory department; examples'of such job tickets, comprising the'printed cars' 74and 75, are illustrated in Figs; 7 and 8.
  • the job tickets -such ascards 74':a rrd"75 should also show one another, and, on the'other hand, by the pointed pins 60 projecting'from' the inner face of the plate 4111'.
  • selector device further comprises a means for I'narking' or indexing the position ofthe'mask and clamp on the rail; that is, the device includesa means for. accurately locating the mask M at a series of different positions axially of the blanket cylinder.
  • the position marking means comprises a pointeror index marker 50 which is preferably located'in the middle of the lower shelf 44 of the sliding bracket 45.
  • Agraduated angle scale is employed. in connection with the position pointer 50; the scale structure'comprises a support portion 69 which is" secur'edto the trailing clamp54a for the blanket bymeans. of alpair of knurled screws 56 and lock nuts 57'.
  • the scale structure furtherincludes a vertical 'por-* corresponding to individual lines of" datafa's described,
  • the copiesrequiredfor initiatingfparticular manufacturing activity are processed as follows:
  • the right-handsection 77 of the master receives therepetitive data 71 including, for example, a descriptioniof' the device to be'manufactured, an identifying numberfor the device being manufactur'ed, a drawingnumber, the starting date 'for the manufacturing activity, the scheduled; finishing date, the quantity of devices to be manufactured, specifications for the materials to be employed, and other like information.
  • the left-hand section 78 of the master which may, for example bis-separatedfrom the section 77by a I perforated line 79, receives the variable data comprising the list ofindividual operations 72.
  • Each ofthe items in the variable data may-include, for example, an operation identification number, awork shop; number, a description of the operation to be performed, a machine tool codenumber, theset-uptimef'o r. the machine tool, the
  • the master 76 After the master 76 has been prepared, it is mounted upon the form cylinder 25 and inked in the usual manner. It should be noted that the lines of data on the master 76, as mounted on the form cylinder 25, extend circumferentially of the cylinder; that is, they extend in the direction of rotational movement of the cylinder, as indicated by arrows A, Figs. 1 and 5. The ink images of the repetitive and variable data are then transferred from the planographic master to the blanket 55.
  • the operator of the machine then mounts the mask M in place, securing the mask between the two clamp members 41a and 41b.
  • the mask itself is preferably, made of a relatively thin flexible material and may comprise, for example, a simple sheet of thin flexible card stock or other paper or of fabric.
  • the work tickets, as exemplified by job tickets'74 and 75 are then fed into the printing machine 20. At the outset, selected portions of the variable information 72 are printed on the job tickets.
  • the repetitive data printing of the job tickets is deferred untilafter. printing of the variable data thereon, .as explained more fully hereinafter.
  • the masteris inked and the ink image thereof is transferred to the blanket 55. Only one inking is normally required for printing the variable data on all job tickets, since only a few copies of each job ticket are necessary.
  • the mask M is then positioned, with respect to the blanket cylinder 26, so that it does not cover any of the variable data, but may cover the repetitive data.
  • the first job ticket is then fed into the printing machine from a position such that only the first item of variable information is im- Operation of the adjustable line selector is extremely simple and convenient and requires a minimum of skill on the part of the machine operator. Thus, in order for the operator to insert the edge of the mask M between the retaining clamp plates 41a and 41b, it is only necessary to press downwardly (see Fig.
  • the operator then clasps the handles 58 at the ends of the shelf44 on the Z-shaped sliding bracket 45, usually between the thumb and forefinger, and shifts the bracket laterally along the rail 46 while exerting sufiicient outward pulling force to disengage the catch 65 from the notch in which it has been engaged.
  • the operator may slide the catch along the upper edge 7 of the rail 46 until it is located above the notch correprinted thereon, the length of the job ticket being such that the remainder of the variable data is not imprinted on the job ticket.
  • the master cylinder 25 is maintained in spaced relation with respect to the blanket cylinder 26, since no additional inking of the blanket cylinder is required.
  • the adjustable line selector device is moved by the machine operator, to the left as seen inFigs. 1 and 3, the required space for covering the first variable entry with the mask M.
  • the second labor ticket. is then fed into the machine and the second entry of variable'information is printed thereon.
  • all undesired items of variable information are effectively omitted from the job ticket by virtue of the positioning of the mask M and the relatively short length of the job ticket.
  • This printing process is repeated there after for each subsequent item of variable information, the desired number of job tickets being printed for each manufacturing, stocking, assembling, or other operation.
  • a graduated scale 64 is preferably provided upon the feed table 63 of the printing machine, the scale 64 corresponding to the graduationsof the blanket cylinder mask scale 69.
  • the ticket may be fed into contact with the blanket cylinder, 26 in a position such thatthe space at the bottom of the ticket is located exactly opposite the desired item of variable information transferred from the master onto the blanket.
  • No other information can be printed on this labor ticket because, on the one hand, the data transferred from the master onto the blanket beneath the item of variable information corresponding to index marking n, that is to the left as seen in Fig. 3, these additional data (n+1), (n+2) are located beyond the bottom edge of the ticket in an area of the blanket cylinder which does not contact any portion of thepaper.
  • variable information entries (n l (n2) which are located above theitem n, that is, to the right as seen in Fig. 3, cannot be printed because of the interposition of the mask M between the blanket and the labor ticket, the left edge of the mask being located just above the variable data 11 when the pointer 50 has been set by the operator in alignment with the graduation n on the scale 19.
  • the repetitive data 71 is reproduced on the job tickets such as the cards 74 and 75.
  • the master cylinder 25 is again actuated to transfer an ink image onto the'blanket 55 of the blanket cylinder 26.
  • the variable data portion of the master may In printing of the repetitive data 72 on the job tickets, I
  • variable and repetitive data areas of the master may be separated by a spacing sufiicient that the relatively short job tickets are not imprinted with the variable data at the time that the repetitive data is reproduced thereon.
  • the variable and repetitive data areas of the master may be separated by a spacing sufiicient that the relatively short job tickets are not imprinted with the variable data at the time that the repetitive data is reproduced thereon.
  • 'prin-ting of the repetitive data on the job tickets is carried out in a manner essentially similar to printing of the route sheets, except for the provisions described hereinabove forv preventing simultaneous printing of the variable data 72.
  • Figs. 9 and 10 illustrate another embodiment of the invention in which the adjustable line selector device is of somewhat modified construction.
  • the clamp supporting means comprises an angle bracket 93 having one flange which is secured to the clamp plate 41b and having a second flange which is attached, as by means of the screws 94, to the sliding mount for the clamp.
  • the sliding mount comprises a U-shaped slide member 95 which engages a rectangular rail 96, the rail 96 extending longitudinally of the blanket cylinder 26.
  • a spring member 97 is mounted upon the slide member 95 and is compressed between the inner rear face of the slide member 95 and the front face of the rail 96, asbest seen in Fig. 10. The spring 97 pulls the inwardly bent flanges at the ends of the two side walls of the slide member-95 in contact with the rear or upper face of the rail 96.
  • the line selector device further includes a shield mernber 98 having a forwardly bent lower end 99, the shield being mounted upon the upper clamp plate 41a as illustrated in Fig. 10.
  • a spring blade 100 issecured to the bottom face of the U-shaped slide member 95, as by means of a screw 101, and engages the upper or rear face of the shield 98.
  • the mask clamp in this embodiment thus comprises two members, one being formed by the upper clamp plate 41a and the shield 98 to which it is aifixed and the other by' the lower plate 411), the angle bracket 93 mounted thereon, and the slides 95 to which the angle bracket is affixed.
  • the spring blades con stantly urge the plates 41a and 41b toward each other.
  • the operator pushes against the shield 98, moving the shield against the action of the spring 100 and toward the sl de mem ber 95, thereby separating the plates 41a and dlb and providing adequate space for insertion of the edge of the mask.
  • the mounting pins 60 of the first embodiment have been omitted; these pins may be desirable in some instances but are not essential inasmuch as the spring biasing means in either embodiment may afford sufiicient gripping strength to maintain the mask M in the desired position on the blanket cylinder.
  • the line. selector deyice in the embodiment of Figs. 9 and 10 is also provided with marking or. indexing means for locating the slide member in predetermined accurate position along the rail 96, the indexing means being substantially similar tothat described hereinabove in connection with Figs. 3 and 4.
  • the position marking means comprises a pointer 50' which in this instance is located in the middle of the downwardly extending portion 99 of the shield member 98 (see Fig.
  • the shelf 99 of the shield 98 also has its left andright ends 58 bent upwardly to form two handles which may be clasped by the operator, usually between the thumb and forefinger, to shift the slides along the rail 96 and to "bring the pointer 50 opposite a graduation on the scale 59, that is, in alignment with the figure corresponding to a particular line selection.
  • the rail 96' may be secured to the lead end blanket clamp 54b of the blanket cylinder as by means of two countersunk set screws 62, lock nuts 61 being utilized to maintain the screws in position in the rail 96 and the blanket clamp 54b. 7
  • a line selector device comprising: a slide member mounted on said blanket cylinder for longitudinal sliding movement with respect thereto; a clamp, affixed to said slide member, for gripping a thin, flexible mask and supporting said mask in position to cover a predetermined portron of said blanket and prevent printing therefrom; first index means on said blanket cylinder for indicating the portion of said blanket cylinder covered bya mask supported in said clamp; and second index means on said feed table for enabling an operator to align a print-receiving sheet in predetermined position with respect to the maskedv and unmasked portions of the blanket cylinder.
  • an offset printing machine of the kind comprising a form cylinder adapted to mount a lithographic master, an mpression cylinder, a feed table and a blanket cylinder mterposed between the form and impression .clamp plate toward said fixed clamp plate, for'gripping a thin, flexible mask and sup-porting said mask in position to cover a predetermined portion of said blanket and prevent printing therefrom; first index means on said blanket cylinder, for indicating the portion of said blanket cylinder covered by a mask supported in said clamp; and second index means on said feed table for enabling an operator to align a pr ntere'ceivin'g sheet in predetermined position with respect. to themasked'and unmasked portions o-f-the blanketcylinder;
  • a line selector device comprising: a guide rail mounted on said blanket cylinder and extending longitudinally thereof; a slide member mounted on said guide rail for longitudinal sliding movement with respect thereto; resilient biasing means, effectively engagng said slide member and said guide rail, for maintaining said slide member in frictional contact with said rail; a clamp afiixed to said slide member, for gripping a thin, flexible mask and supporting said mask in position to cover a predetermined portion of said blanket and prevent printing therefrom; first index means on said blanket cylinder, for indicating the portion of said blanket cylinder covered by a mask supported in said clamp; and second index means on said feed table for
  • the method of printing a series of related documents comprising the following steps: applying repetitive and variable ink-receptive data images to first and second discrete areas of a lithographic master, said variable data being arranged in a series of equally spaced lines; mounting said master on a form cylinder with the lines of variable data extending circumferentially thereof; inking the images on the master; rotating the form cylinder in inktransferring contact sheet with a cylindrical blanket; feeding work sheets having lengths correlated to the data on the master one-by-one between said blanket and a platen cylinder from a series of different positions therealong while simultaneously masking predetermined related portions of said blanket at one side only of the work sheet to imprint only one item of variable data on one marginal portion of each work sheet; and feeding said work sheets one-by-one between said blanket and said platen cylinder from a fixed position to imprint said repetitive data on each work sheet adjacent the opposite edge thereof.
  • the method of printing a series of related documents comprising the following steps: applying repetitive and variable ink-receptive data images to first and second discrete areas of a lithographic master, said repetitive data area having a given length and said variable data being arranged in a series of equally spaced lines; mounting said masteron a form cylinder'with the lines of variable data extending circumferentially thereof; inking the images on the master; rotating the form cylinder in ink-transferring contact with a cylindrical blanket; feeding work sheets having lengths correlated to the data on the master one-by-one between said blanket and a platen cylinder from a series of ditferent positions therealong while simultaneously masking different predetermined portions of said blanketvat one side only of the work sheet to imprint only one item of variable data on each work sheet, said work sheets being selected to correspond in length to the variable data entries imprinted thereon; and feeding said work sheets one-by-one betwgen said blanket and said platen cylinder from a fixed position to imprint said repetitive data on each work sheet.
  • a line selector device comprising: a guide rail aflixed to and extending longitudinally of said blanket cylinder and having a central longitudinal slot therein; a slide member i 10 mounted on said guide rail for longitudinal sliding movement with respect thereto, said slide member comprising a Z-shaped bracket and a plurality of studs afiixed thereto and extending into said guide rail slot; a corresponding plurality of biasing springs, individually mounted on said studs and engaging said studs to urge said bracket into frictional contact with said rail; a clamp, afiixed to said siide member, for gripping a thin, flexible mask and supporting
  • an oflfset printing machine of the kind comprising a form cylinder adapted to mount a lithographic master, an impression cylinder, a feed table and a blanket cylinder interposed between the form and impression cylinders to transfer an ink image from a master mounted on said form cylinder to a print-receiving sheet fed from said feed table between said blanket and impression cylinders, a line selector device comprising: a guide rail afiixed to and extending longitudinally of said'blanket cylinder and having a plurality of index notches spaced at preselected intervals therealong; a slide member mounted on said guide rail for longitudinal sliding movement with respect thereto; a clamp, afiixed to said slide member, for gripping a thin, flexible mask and supporting said mask in position to cover a predetermined portion of said blanket and prevent printing therefrom; first index means on said blanket cylinder for indicating the portion of said blanket cylinder covered by a mask supported in said clamp and comprising a graduated scale corresponding to said index
  • latch means comprising a resilient releasable latch member mounted on said slide in position to engage one of said index notches whenever said slide is in predetermined alignment with the corresponding portion of said scale; and second index means on said feed table for enabling an operator to align a print-receiving sheet in predetermined position with respect to the masked and unmasked portions of the blanket cylinder.
  • a line selector device comprising: a slide member mounted on said blanket cylinder for longitudinal sliding movement with respect thereto; a clamp, affixed to said slide member, for gripping a thin, flexible mask and supporting said mask in position to cover a predetermined portion of said blanket and prevent printing therefrom; first index means, including a first graduated scale mounted on and extending axially of said blanket cylinder, for indicating the portion of said blanket cylinder covered by a mask supported in said clamp; and second index means on said feed table comprising a second similar graduated scale mounted in parallel relation to the axis of said blanket cylinder in predetermined axially displaced alignment with said first scale to enable

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  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
US715036A 1958-02-13 1958-02-13 Printing machines Expired - Lifetime US2925029A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US715036A US2925029A (en) 1958-02-13 1958-02-13 Printing machines
GB2404/59A GB846836A (en) 1958-02-13 1959-01-22 Improvements relating to offset printing machines
BE575512A BE575512A (fr) 1958-02-13 1959-02-09 Machine d'impression.
FR786381A FR1224293A (fr) 1958-02-13 1959-02-11 Perfectionnements aux machines à imprimer
DEA31320A DE1121627B (de) 1958-02-13 1959-02-12 Druckmaschine mit einer das Druckbild in Spiegelschrift tragenden Druckform
CH6945359A CH369478A (de) 1958-02-13 1959-02-12 Offsetdruckmaschine und Verfahren zum Betrieb derselben

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Application Number Priority Date Filing Date Title
US715036A US2925029A (en) 1958-02-13 1958-02-13 Printing machines

Publications (1)

Publication Number Publication Date
US2925029A true US2925029A (en) 1960-02-16

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ID=24872435

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Application Number Title Priority Date Filing Date
US715036A Expired - Lifetime US2925029A (en) 1958-02-13 1958-02-13 Printing machines

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US (1) US2925029A (de)
BE (1) BE575512A (de)
CH (1) CH369478A (de)
DE (1) DE1121627B (de)
FR (1) FR1224293A (de)
GB (1) GB846836A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967475A (en) * 1958-11-26 1961-01-10 Ritzerfeld Wilhelm Machine for selective offset printing
DE1151000B (de) * 1960-10-28 1963-07-04 Erich Gericke Folienaufspannvorrichtung zum Aufspannen von Druckfolien auf den Formzylinder von Vervielfaeltigungsmaschinen
US3137229A (en) * 1961-09-25 1964-06-16 Louie J Vickers Block-out frisket for printing processes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2093385A (en) * 1936-06-19 1937-09-14 Standard Mailing Machines Comp Duplicator
US2421823A (en) * 1942-06-29 1947-06-10 Addressograph Multigraph Drum stop means for printing machines
US2707433A (en) * 1949-05-18 1955-05-03 Ditto Inc Method and means for line printing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH312230A (de) * 1940-06-05 1955-12-31 Ritzerfeld Wilhelm Maschine zum ganzseitigen, abschnittweisen Abdrucken von abdruckfähigen Spiegelbildoriginalen in Zeilenrichtung.
DE944015C (de) * 1942-10-10 1956-06-07 Wilhelm Ritzerfeld Verfahren und Vorrichtung zum Abdrucken von Texten oder Textteilen aus einer oder mehreren Druckformen
GB697335A (en) * 1950-11-08 1953-09-23 Block & Anderson Ltd Improvements in or relating to hectograph printing machines
FR1136402A (fr) * 1954-09-22 1957-05-14 Block & Anderson Ltd Agencements des pinces destinées à la fixation des feuilles maîtresses sur le cylindre d'impression de duplicateurs hectographiques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2093385A (en) * 1936-06-19 1937-09-14 Standard Mailing Machines Comp Duplicator
US2421823A (en) * 1942-06-29 1947-06-10 Addressograph Multigraph Drum stop means for printing machines
US2707433A (en) * 1949-05-18 1955-05-03 Ditto Inc Method and means for line printing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967475A (en) * 1958-11-26 1961-01-10 Ritzerfeld Wilhelm Machine for selective offset printing
DE1151000B (de) * 1960-10-28 1963-07-04 Erich Gericke Folienaufspannvorrichtung zum Aufspannen von Druckfolien auf den Formzylinder von Vervielfaeltigungsmaschinen
US3137229A (en) * 1961-09-25 1964-06-16 Louie J Vickers Block-out frisket for printing processes

Also Published As

Publication number Publication date
FR1224293A (fr) 1960-06-23
DE1121627B (de) 1962-01-11
BE575512A (fr) 1959-08-10
GB846836A (en) 1960-08-31
CH369478A (de) 1963-05-31

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