US3835774A - Device in offset printing presses for controlling the supply of dampening liquid to dampening equipment of the presses - Google Patents

Device in offset printing presses for controlling the supply of dampening liquid to dampening equipment of the presses Download PDF

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Publication number
US3835774A
US3835774A US00308342A US30834272A US3835774A US 3835774 A US3835774 A US 3835774A US 00308342 A US00308342 A US 00308342A US 30834272 A US30834272 A US 30834272A US 3835774 A US3835774 A US 3835774A
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US
United States
Prior art keywords
dampening
liquid
press
control
equipment
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Expired - Lifetime
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US00308342A
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English (en)
Inventor
H Heidt
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.)
Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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.)
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Publication date
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
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Publication of US3835774A publication Critical patent/US3835774A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0054—Devices for controlling dampening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices

Definitions

  • ABSTRACT Offset printing press having a main motor and dampening equipment includes a device for automatically [30] Foreign Apphcatmn Pnonty Data controlling a supply of dampening liquid to the damp- Nov. 22, 1971 Germany 2157778 ening equipmem
  • the device includes an adjusting motor which has a rotary shaft and which is connected [52] US. Cl. 101/148, l0l/366 to the main motor for Controlling the rotary Speed [51] II. Cl B411 25/12, 1341f 7/32 thereof, a Control Cam Secured to the Shaft as for [58] Fleld of Search 101/366, 147, 148, 350, ample, illustrated in U S NO.
  • 318/361 trol member means operatively engageable by the control cam for determining the amount of liquid sup- [56] References C'ted plied from a source thereof to the dampening equip- UNITED STATES PATENTS m 1,279,360 9/1918 Kirthals-Aotes 318/361 1,505,929 8/1924 Prescott 318/361 X 5 Glam, 1 Drawmg DEVICE IN OFFSET PRINTING PRESSES FOR CONTROLLING THE SUPPLY DAMPENING LIQUID TO DAMPENING EQUIPMENT OF THE PRESSES SPECIFICATION
  • the invention relates to offset printing presses having a device for controlling automatically the supply of dampening liquid to dampening equipment of the presses, and more particularly to such offset printing presses which are provided with an adjusting motor for controlling the rotary speed of the main shaft of the printing presses, for example, by adjusting the collector brushes of the main shaft.
  • a device for automatically controlling a supply of dampening liquid to the dampening equipment comprising an adjusting motor connected to the main motor for controlling the rotary speed thereof, said adjusting motor having a rotary shaft, a control cam secured to the shaft, and control member means operatively engageable by the control cam for determining the amount of liquid supplied from a source thereof to the dampening equipment.
  • the control cam is provided with a cam surface based upon empirically determined dimensions which will ensure that the printing platens of offset printing presses of the same type will always receive accurately metered moisture at all printing speed of the presses.
  • the cam surface will have a curvature empirically determined by setting the printing press at different speeds with the valve opening to permit desired flow of moisture at each speed correlated to the point on the cam surface such that the cam surface thus empirically determined will always effect the same valve opening for a given speed.
  • the control cam actuates a control valve through a control member with which the control cam is in engagement.
  • the control cam acts upon the rotary speed control through a control member with which the control cam is in engagement.
  • the collector 1 is provided with collector brushes 3 that are adjustable in accordance with the desired rotary speed of the main motor 2.
  • the adjustment of the collector brushes 3 is effected by a brushadjusting ring gear 4 which is driven by a pinion 5 that is in meshing engagement therewith.
  • the pinion 5 is secured to one free end of the shaft 6, a control cam 8 is mounted and is in actuating engagement with a cam follower or roller 9 which is rotatably carried by a linkage 10 through which the cam follower roller 9 is formlockingly connected in a conventional manner with the non-illustrated closure member of a control valve diagrammatically represented by the box 11.
  • the control valve 11 controls the supply of liquid to dampening equipment 12 of the offset printing press.
  • the control cam 8 has been turned and has assumed a new position. Because of the construction of the control cam 8 which is empirically arrived at by a man of ordinary skill in the art, the control valve 4 can be opened so wide that optimal dampening of the printing platen or platens of the press is effected for the newly adjusted printing speed.
  • control cam 8 is mounted directly on the shaft of the control member which adjusts the rotary speed adjusting motor 7 to the desired rotary speed.
  • a device for automatically controlling a predetermined supply of dampening liquid to the dampening equipment, in accordance with the press speed comprising an adjusting motor connected to the main motor for controlling the rotary speed thereof, said adjusting motor having a rotary shaft, a source of dampening liquid for supplying liquid to said dampening equipment, control member means for regulating the flow of dampening liquid from said source to said dampening equipment, a control cam secured to said shaft of said adjusting motor, said control member means operatively engageable by said control cam to vary the amount of liquid supplied from said source to the dampening equipment in accordance with the press speed, said control cam having a curved surface to activate said control member means to supply predetermined amounts of liquid at different press speeds.
  • Offset printing machine wherein the main motor is provided with collector brushes, said adjusting motor being connected to said collector brushes for varying the position of said brushes.
  • control member means comprises a control member and said control valve operatively connected to said control member, said control member being engageable by said control cam so as to actuate said control valve to control flow of liquid therethrough.
  • the dampening equipment includes an immersion roller and rotary speed control therefor, said control member means comprising a control member engageable by said control cam and operatively con nected to the rotary speed control for the immersion roller.
  • a method of automatically controlling a predetermined supply of dampening liquid to dampening equipment in accordance with press speed of an offset printing press having a main motor adapted to rotate the press at different speeds and dampening equipment for supplying dampening liquid to the press which comprises supplying liquid to said dampening equipment from a source of dampening liquid, regulating the flow of dampening liquid from said source to said dampening equipment by means of a control member, varying the amount of liquid supplied from said source to said dampening equipment by a control cam having a curved surface to activate said control member to supply predetermined amounts of liquid at different press speeds, and simultaneously moving said control cam with change of press speed to effect flow of predetermined amount of liquid at each press speed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Stopping Of Electric Motors (AREA)
  • Rotary Presses (AREA)
  • Transmission Devices (AREA)
US00308342A 1971-11-22 1972-11-21 Device in offset printing presses for controlling the supply of dampening liquid to dampening equipment of the presses Expired - Lifetime US3835774A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2157778A DE2157778C2 (de) 1971-11-22 1971-11-22 Einrichtung in Offsetdruckmaschinen zur Regelung der Feuchtflussigkeitszu fuhr an Feuchtwerken

Publications (1)

Publication Number Publication Date
US3835774A true US3835774A (en) 1974-09-17

Family

ID=5825745

Family Applications (1)

Application Number Title Priority Date Filing Date
US00308342A Expired - Lifetime US3835774A (en) 1971-11-22 1972-11-21 Device in offset printing presses for controlling the supply of dampening liquid to dampening equipment of the presses

Country Status (11)

Country Link
US (1) US3835774A (enExample)
JP (1) JPS4863813A (enExample)
AT (1) AT311390B (enExample)
CH (1) CH542718A (enExample)
CS (1) CS162635B2 (enExample)
DD (1) DD98060A5 (enExample)
DE (1) DE2157778C2 (enExample)
FR (1) FR2162965A5 (enExample)
GB (1) GB1397148A (enExample)
NL (1) NL7211864A (enExample)
SE (1) SE385101B (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4029008A (en) * 1976-05-24 1977-06-14 Addressograph Multigraph Corporation Moisture control system
US4064801A (en) * 1975-08-12 1977-12-27 Ryco Graphic Manufacturing, Inc. Spray dampening system for offset printing
US4708058A (en) * 1985-10-10 1987-11-24 Smith Rpm Corporation Water pulse spray dampening system and method for printing presses
US6364114B2 (en) 1999-10-29 2002-04-02 Sony Corporation Clamshell package including both permanent and resealable fastening structure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192153A (en) * 1986-07-04 1988-01-06 Ratby Eng Co Ltd Damping system in printing machines
FR2610399B1 (fr) * 1987-02-03 1991-04-12 Marinoni Harris Sa Procede de mesure de l'epaisseur d'un film d'une solution de mouillage depose sur une plaque d'impression d'une rotative offset et systeme pour la mise en oeuvre de ce procede

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1279360A (en) * 1918-03-16 1918-09-17 Gen Electric Motor-control system.
US1505929A (en) * 1922-03-25 1924-08-19 Gen Electric Motor control
US1631752A (en) * 1927-01-22 1927-06-07 Gen Electric Automatic load equalization
US1744205A (en) * 1928-02-18 1930-01-21 Boisseau Edmond Printing press
US2231666A (en) * 1938-05-11 1941-02-11 Michle Printing Press & Mfg Co Dampening mechanism
US2561837A (en) * 1950-08-22 1951-07-24 Gen Electric Preset speed device for adjustable speed motors
US2971461A (en) * 1955-04-22 1961-02-14 Harris Intertype Corp Method and means for measuring ink film thickness
US3234871A (en) * 1963-09-17 1966-02-15 Robert E Ostwald Automatic liquid control and scanning device for duplicating machines
US3601644A (en) * 1968-12-19 1971-08-24 Necchi Soc Per Axioni Speed regulation device for swing machine motors
US3693063A (en) * 1970-04-23 1972-09-19 Necchi Spa Speed control device for sewing machines

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1279360A (en) * 1918-03-16 1918-09-17 Gen Electric Motor-control system.
US1505929A (en) * 1922-03-25 1924-08-19 Gen Electric Motor control
US1631752A (en) * 1927-01-22 1927-06-07 Gen Electric Automatic load equalization
US1744205A (en) * 1928-02-18 1930-01-21 Boisseau Edmond Printing press
US2231666A (en) * 1938-05-11 1941-02-11 Michle Printing Press & Mfg Co Dampening mechanism
US2561837A (en) * 1950-08-22 1951-07-24 Gen Electric Preset speed device for adjustable speed motors
US2971461A (en) * 1955-04-22 1961-02-14 Harris Intertype Corp Method and means for measuring ink film thickness
US3234871A (en) * 1963-09-17 1966-02-15 Robert E Ostwald Automatic liquid control and scanning device for duplicating machines
US3601644A (en) * 1968-12-19 1971-08-24 Necchi Soc Per Axioni Speed regulation device for swing machine motors
US3693063A (en) * 1970-04-23 1972-09-19 Necchi Spa Speed control device for sewing machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064801A (en) * 1975-08-12 1977-12-27 Ryco Graphic Manufacturing, Inc. Spray dampening system for offset printing
US4029008A (en) * 1976-05-24 1977-06-14 Addressograph Multigraph Corporation Moisture control system
US4708058A (en) * 1985-10-10 1987-11-24 Smith Rpm Corporation Water pulse spray dampening system and method for printing presses
US6364114B2 (en) 1999-10-29 2002-04-02 Sony Corporation Clamshell package including both permanent and resealable fastening structure

Also Published As

Publication number Publication date
CH542718A (de) 1973-10-15
JPS4863813A (enExample) 1973-09-05
SE385101B (sv) 1976-06-08
DE2157778B1 (de) 1973-04-12
CS162635B2 (enExample) 1975-07-15
DD98060A5 (enExample) 1973-06-05
NL7211864A (enExample) 1973-05-24
DE2157778C2 (de) 1973-10-25
DE2157778A1 (enExample) 1973-04-12
FR2162965A5 (enExample) 1973-07-20
AT311390B (de) 1973-10-15
GB1397148A (en) 1975-06-11

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