US1031288A - Rotary offset printing-press. - Google Patents

Rotary offset printing-press. Download PDF

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Publication number
US1031288A
US1031288A US62144611A US1911621446A US1031288A US 1031288 A US1031288 A US 1031288A US 62144611 A US62144611 A US 62144611A US 1911621446 A US1911621446 A US 1911621446A US 1031288 A US1031288 A US 1031288A
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United States
Prior art keywords
cylinder
press
offset printing
cylinders
rotary offset
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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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US62144611A
Inventor
Herbert Pearce
Thomas Robert Gillett Parker
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.)
Linotype and Machinery Ltd
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Linotype and Machinery Ltd
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 Linotype and Machinery Ltd filed Critical Linotype and Machinery Ltd
Priority to US62144611A priority Critical patent/US1031288A/en
Application granted granted Critical
Publication of US1031288A publication Critical patent/US1031288A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B41F7/04—Rotary lithographic machines for offset printing using printing units incorporating one forme cylinder, one transfer cylinder, and one impression cylinder, e.g. for printing on webs
    • B41F7/06—Rotary lithographic machines for offset printing using printing units incorporating one forme cylinder, one transfer cylinder, and one impression cylinder, e.g. for printing on webs for printing on sheets

Definitions

  • HERBERT PEARCE AND THOMAS ROBERT GILLETT PARKER OF ZBROAIDHEATH, ENG- LAND, ASSIGNORS T LINOTYPE AND MACHINERY LIMITED, OF LONDON, ENGLAND.
  • This invention relates to improvements in rotary offset printing presses of the two-revolution type, the said improvements consisting essentially in the offset and impression cylinders being both of the same diameter and of half the diameter of the plate cylinder, with the three cylinders arranged with their axes in different vertical and horizontal planes, the vertical plane containing the axis of the impression cylinder being between those containing the axes of the plate and offset cylinders; and the horizontal planes containing the axes of the plate and impression cylinders being respectively below and above that containing the axis of the offset cylinder, this construction serving to provide better access to the front and rear sides of the plate cylinder for inspection and cleaning purposes than has with other constructions heretofore been possible.
  • the rubber or equivalently covered offset cylinder which receives the impression from the plate cylinder 1 and transfers it to the paper carried around by the impression cylinder 5, which latter, for this purpose, is provided with the usual grippers, not shown in the diagram.
  • the axes of the said three cylinders are situated in three different vertical planes, the vertical plane containing the axis of the impression cylinder 5, being between those containing the axes of the cylinders 1 and 4 respectively.
  • the plate cylinder 1 has attached to it the usual aluminium or other lithographic plate, which extends around practically one half of its circumference, and, for each sheet printed, it makes one complete revolution, while the cylinders 4 and 5 make two complete revolutions each.
  • the offset cylinder 4 is capable of being tripped or moved out of printing contact with the plate cylinder 1 and impression cylinder 5 during substantially one half revolution of the former and the corresponding revolution of the latter; the means for effecting this tripping, however, constitute no part of the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Description

H. PEARCE 8: T. R. G. PARKER.
ROTARY OFFSET PRINTING PRESS.
APPLIOATIOH mum APILU, 1911.
Patented July 2, 19 12.
Mam,
M M W UNITED STATES PATENT OFFICE.
HERBERT PEARCE AND THOMAS ROBERT GILLETT PARKER, OF ZBROAIDHEATH, ENG- LAND, ASSIGNORS T LINOTYPE AND MACHINERY LIMITED, OF LONDON, ENGLAND.
ROTARY OFFSET PRINTING-PRESS.
Specification of Letters Patent.
Patented July 2,1912.
Application filed April 17, 1911. Serial No. 621,446.
- THOMAS ROBERT GILLETT PARKER, subjects of the King of the United Kingdom of Great Britain and Ireland, residing at Linotype and Machinery WVorks, Broadheath, in the county of Chester, England, have invented new and useful Improvements in Rotary Offset Printing-Presses, of which the following is a specification.
This invention relates to improvements in rotary offset printing presses of the two-revolution type, the said improvements consisting essentially in the offset and impression cylinders being both of the same diameter and of half the diameter of the plate cylinder, with the three cylinders arranged with their axes in different vertical and horizontal planes, the vertical plane containing the axis of the impression cylinder being between those containing the axes of the plate and offset cylinders; and the horizontal planes containing the axes of the plate and impression cylinders being respectively below and above that containing the axis of the offset cylinder, this construction serving to provide better access to the front and rear sides of the plate cylinder for inspection and cleaning purposes than has with other constructions heretofore been possible.
The invention will be best understood by reference to the accompanying diagrammatic side elevation of a press constructed according to the said invention.
1 is the form or plate cylinder rotating in bearings above the base 2 of the frame 3.
4 is the rubber or equivalently covered offset cylinder which receives the impression from the plate cylinder 1 and transfers it to the paper carried around by the impression cylinder 5, which latter, for this purpose, is provided with the usual grippers, not shown in the diagram.
6 are the inking rollers, 7 the damping rollers, 8 the feed board and 9 a part of the delivery mechanism, all of which may be of ordinary construction.
Concerning especially the cylinders 1, 4 and 5, it is to be particularly observed that the two last-mentioned cylinders are both of the same diameter and that each is of half the diameter of the plate cylinder 1, and
further that the axes of the said three cylinders are situated in three different vertical planes, the vertical plane containing the axis of the impression cylinder 5, being between those containing the axes of the cylinders 1 and 4 respectively.
The plate cylinder 1 has attached to it the usual aluminium or other lithographic plate, which extends around practically one half of its circumference, and, for each sheet printed, it makes one complete revolution, while the cylinders 4 and 5 make two complete revolutions each.
The offset cylinder 4 is capable of being tripped or moved out of printing contact with the plate cylinder 1 and impression cylinder 5 during substantially one half revolution of the former and the corresponding revolution of the latter; the means for effecting this tripping, however, constitute no part of the present invention.
Having described our invention, we declare that what we claim and desire to secure by Letters Patent is In a rotary offset printing press, the combination ofva form or plate cylinder, an offset cylinder, and an impression cylinder, the offset cylinder and the impression cylinder being both of the same diameter and onehalf the diameter of the plate cylinder, and the axes of the three cylinders being situated in three different vertical and horizontal planes, the vertical plane containing the axis of the impression cylinder being between those containing the axes of the plate and ofiset cylinders, and the horizontal planes containing the axes of the plate and impression cylinders being respectively below and above that containing the axis of the offset cylinder.
In witness whereof we have hereunto set our hands in the presence of two witnesses.
HERBERT PEARCE. THOMAS ROBERT GILLETT PARKER.
Witnesses:
EWALD SIMPSON MOSELEY, MALCOLM SMETHURs'r.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.
US62144611A 1911-04-17 1911-04-17 Rotary offset printing-press. Expired - Lifetime US1031288A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US62144611A US1031288A (en) 1911-04-17 1911-04-17 Rotary offset printing-press.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62144611A US1031288A (en) 1911-04-17 1911-04-17 Rotary offset printing-press.

Publications (1)

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US1031288A true US1031288A (en) 1912-07-02

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US62144611A Expired - Lifetime US1031288A (en) 1911-04-17 1911-04-17 Rotary offset printing-press.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540690A (en) * 1945-07-13 1951-02-06 Harris Seybold Co Rotary offset sheet perfecting press
US5231925A (en) * 1991-07-01 1993-08-03 Roberts Frank W Method of making a decorated, substantially planar sheet of glass or polymeric material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540690A (en) * 1945-07-13 1951-02-06 Harris Seybold Co Rotary offset sheet perfecting press
US5231925A (en) * 1991-07-01 1993-08-03 Roberts Frank W Method of making a decorated, substantially planar sheet of glass or polymeric material

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