US3366048A - Cylinder interrupter for a rotary offset printing and duplicating machine - Google Patents

Cylinder interrupter for a rotary offset printing and duplicating machine Download PDF

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Publication number
US3366048A
US3366048A US451772A US45177265A US3366048A US 3366048 A US3366048 A US 3366048A US 451772 A US451772 A US 451772A US 45177265 A US45177265 A US 45177265A US 3366048 A US3366048 A US 3366048A
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US
United States
Prior art keywords
cylinder
offset
eccentric shaft
printing
duplicating machine
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
US451772A
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English (en)
Inventor
Erich Gericke
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.)
Rotaprint GmbH
Original Assignee
Rotaprint GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rotaprint GmbH filed Critical Rotaprint GmbH
Application granted granted Critical
Publication of US3366048A publication Critical patent/US3366048A/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
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L39/00—Indicating, counting, warning, control, or safety devices
    • B41L39/16—Programming systems for automatic control of sequence of operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26—Arrangement of cylinder bearings
    • B41F13/28—Bearings mounted eccentrically of the cylinder axis
    • 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
    • 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
    • B41L39/00—Indicating, counting, warning, control, or safety devices

Definitions

  • This invention relates to an offset printing and duplicating machine comprising an inking system and a plate cylinder rotatably mounted on an eccentric shaft.
  • Offset printing machines known to the art are so constructed that all the cylinders are separated from one another and that the plate cylinder is separated from the inking system when the machine is not in operation.
  • the inking roller of the inking system is first moved into contact with the printing plate on the printing'cylinder until the plate has been evenly inked.
  • the plate cylinder and the offset cylinder are then moved into contact for transferring the inked printing image to the rubber blanket of the offset cylinder.
  • the two latter cylinders are likewise moved into contact to transfer the image from the rubber blanket to the paper upon which the image is to be printed.
  • the object contemplated by the invention is therefore the provision of a form of construction in which these operations are considerably simplified and faulty manipulation is less likely to occur.
  • FIG. 1 is a side elevation of the machine in the position in which the control lever is in the off position;
  • FIG. 2 is a view of the eccentric shaft and of the control mechanism mounted thereon (view A);
  • FIG. 3 is a view from above showing the mobility of the arresting notches (view B), and
  • FIG. 4 is a front view illustrating the deflection of the arresting notches by the withdrawal of the impression cylinder (view C).
  • FIGURE 1 illustrates the shift mechanism in the off position, that is to say the eccentric shaft 1 is held by control lever 2 in a position in which the plate cylinder 3 mounted on the eccentric shaft does not make contact either with the inking rollers 4 and 5 or with the offset cylinder 6.
  • Plate 10 of the plate cylinder 3 is thereby moved into contact with inking roller 4 and the plate 10 is inked without as yet having made contact with the rubber blanket 7 of the offset cylinder 6.
  • This position of the plate cylinder 3 is marked in dot-dash lines in FIGURE 1.
  • a projection 15 which is provided on the eccentric shaft 12 of the impression cylinder 8, and which engages a recess 13 in draw bar 14, retracts the latter in the downward direction against the resistance of a spring 16 until the projection 15 rides out of recess 13, releasing the drawbar 14 for return by spring 16 into contact with an intercepting pin 17.
  • the downward motion of the draw bar causes a wedge-shaped cam 18 at the upper end of draw bar 14 to deflect a co-operating cam 20 on notched bar 19 against the resistance of a spring 21 in such manner that the notched bar 19 is pivotably deflected about its pivot 22, thereby withdrawing the notch marked print or the notches marked print and ink from control lever 2 which is therefore released and restored by spring 9 to the off position. Consequently the plate cylinder 3 is lifted off the offset cylinder 6 and with drawn from the inking rollers 4 and 5. All the printing cylinders and the inking rollers are therefore out of mutual contact. In other words, the machine is in inoperative position.
  • control lever 2 must be operated as above described.
  • An offset printing and duplicating machine comprising an inking system having at least one inking roller, an eccentric shaft, spring means normally biassing said eccentric shaft into an initial position, a plate cylinder rotatably mounted on said eccentric shaft, an offset cylinder, a control lever defiectable about the axis of said eccentric shaft having an inherent springiness in the direction normal to its direction of deflection, said inking roll and offset cylinder being spaced slightly from and extending parallel to said plate cylinder in inoperative position, said eccentric shaft when rotated bringing said plate cylinder successively into contact with said inking roll and said offset cylinder, said control lever being carried by said eccentric shaft and adapted upon deflection to rotate said shaft to displace said shaft and said plate cylinder from said initial position against the restoring force of said biassing spring means, and a pivotally mounted bar having a plurality of retaining notches into which said inherently springy control lever is adapted to latch to retain said control lever in at least a first deflected position in which said plate cylinder is positioned 4, in contact
  • An ofiset printing and duplicating machine as set forth in claim 1 comprising a paper feed means, and lever transmission means adapted to respond to discontinuance of operation of said paper feed means to with draw at least said retaining notch associated with said second deflected position of said control lever to release said control lever whereby said biassing spring means restores said plate cylinder to its said initial position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
US451772A 1964-05-08 1965-04-29 Cylinder interrupter for a rotary offset printing and duplicating machine Expired - Lifetime US3366048A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER37853A DE1253726B (de) 1964-05-08 1964-05-08 Offsetdruckmaschine

Publications (1)

Publication Number Publication Date
US3366048A true US3366048A (en) 1968-01-30

Family

ID=7405332

Family Applications (1)

Application Number Title Priority Date Filing Date
US451772A Expired - Lifetime US3366048A (en) 1964-05-08 1965-04-29 Cylinder interrupter for a rotary offset printing and duplicating machine

Country Status (6)

Country Link
US (1) US3366048A (de)
AT (1) AT267554B (de)
CH (1) CH428782A (de)
DE (1) DE1253726B (de)
GB (1) GB1075888A (de)
NL (1) NL6505784A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443516A (en) * 1965-08-19 1969-05-13 Agfa Gevaert Ag Rotary press with transfer roller interrupter
US3633503A (en) * 1969-06-20 1972-01-11 Miehle Goss Dexter Inc Drive and interrupter arrangement for rotary offset press
US3757689A (en) * 1971-09-13 1973-09-11 Roland Offsetmaschf Adjustable assembly for a dampening roller of an offset printing press

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2026434A (en) * 1930-07-07 1935-12-31 Hoe & Co R Web printing machine
US2261913A (en) * 1939-01-28 1941-11-04 Davidson Mfg Corp Printing press
US2839992A (en) * 1955-11-14 1958-06-24 Addressograph Multigraph Offset printing machine
US2860577A (en) * 1956-09-26 1958-11-18 Dick Co Ab Cylinder separating mechanism for duplicators
US3046881A (en) * 1959-08-26 1962-07-31 Adamovske Strojirny Np Device for the pressure adjustment of printing rollers
US3203346A (en) * 1961-05-02 1965-08-31 Harris Intertype Corp Three cylinder convertible printing press

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2160613A (en) * 1936-11-19 1939-05-30 Goss Printing Press Co Ltd Rotary printing press
DE1067449B (de) * 1952-08-06
FR1173646A (fr) * 1957-10-25 1959-02-27 Duplicateur rotatif pour la reproduction de planches d'impression lithographiques sur des feuilles ou des supports similaires
DE1151816B (de) * 1960-08-01 1963-07-25 Erich Gericke Offsetdruck- und Vervielfaeltigungsmaschine
US3094067A (en) * 1961-02-22 1963-06-18 Monotype Corp Ltd Cylinders for printing machines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2026434A (en) * 1930-07-07 1935-12-31 Hoe & Co R Web printing machine
US2261913A (en) * 1939-01-28 1941-11-04 Davidson Mfg Corp Printing press
US2839992A (en) * 1955-11-14 1958-06-24 Addressograph Multigraph Offset printing machine
US2860577A (en) * 1956-09-26 1958-11-18 Dick Co Ab Cylinder separating mechanism for duplicators
US3046881A (en) * 1959-08-26 1962-07-31 Adamovske Strojirny Np Device for the pressure adjustment of printing rollers
US3203346A (en) * 1961-05-02 1965-08-31 Harris Intertype Corp Three cylinder convertible printing press

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443516A (en) * 1965-08-19 1969-05-13 Agfa Gevaert Ag Rotary press with transfer roller interrupter
US3633503A (en) * 1969-06-20 1972-01-11 Miehle Goss Dexter Inc Drive and interrupter arrangement for rotary offset press
US3757689A (en) * 1971-09-13 1973-09-11 Roland Offsetmaschf Adjustable assembly for a dampening roller of an offset printing press

Also Published As

Publication number Publication date
DE1253726B (de) 1967-11-09
CH428782A (de) 1967-01-31
GB1075888A (en) 1967-07-12
NL6505784A (de) 1965-11-09
AT267554B (de) 1969-01-10

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