US2425580A - Registering and trimming of printing plates - Google Patents

Registering and trimming of printing plates Download PDF

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Publication number
US2425580A
US2425580A US508914A US50891443A US2425580A US 2425580 A US2425580 A US 2425580A US 508914 A US508914 A US 508914A US 50891443 A US50891443 A US 50891443A US 2425580 A US2425580 A US 2425580A
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US
United States
Prior art keywords
cylinder
plate
carrier
trimming
registering
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
US508914A
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English (en)
Inventor
Tornberg Isidor
Charles L Ricards
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.)
Wood Newspaper Machinery Corp
Original Assignee
Wood Newspaper Machinery Corp
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 Wood Newspaper Machinery Corp filed Critical Wood Newspaper Machinery Corp
Priority to US508914A priority Critical patent/US2425580A/en
Priority to CH253024D priority patent/CH253024A/fr
Application granted granted Critical
Publication of US2425580A publication Critical patent/US2425580A/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
    • B41D—APPARATUS FOR THE MECHANICAL REPRODUCTION OF PRINTING SURFACES FOR STEREOTYPE PRINTING; SHAPING ELASTIC OR DEFORMABLE MATERIAL TO FORM PRINTING SURFACES
    • B41D5/00—Working, treating, or handling stereotype plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S409/00—Gear cutting, milling, or planing
    • Y10S409/901—Stereotype printing plate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/33—Stereotype-plate finishing

Definitions

  • This invention relates to improved apparatus for registering and trimming plates for use on printing presses.
  • this procedure reveals that one or more of the plates cannot be brought intoregistry and must be made again, after which the work of aligning or attempting to register the new plate or plates must be repeated.
  • the previously known procedure not only consumes time and ties up equipment, but leaves much to be desired as regards the registry finally obtained.
  • a further object of the invention is to provide a machine of this character in which both registering and trimming of each of the several plates is accomplished on a single machine or station without handling or conveying the plate between operations of registering and trimming.
  • a further object is the provision of a machine of the type indicated employing simple and rugged trimming mechanism in conjunction with accurate and easily operated mechanism for bringing the plates into registry.
  • Another object of the invention is the provision of a plate registering and trimming machine so constructed and arranged that all of the operations and observations essential to plate registering and trimming can be made by a single operator.
  • Fig. 1 is a sectional side elevation of a machine embodying the invention, taken along the line ll of Fig. 3 and shown on a reduced scale;
  • Fig. 2 is a front elevation of the machine with the cover and the plate holding straps omitted;
  • Fig. 3 is a horizontal sectional view of the plate trimming and registering cylinder and associated apparatus
  • Fig. 4 is a vertical sectional view of the trimming and registering mechanism taken along the line 4-4 of Fig. 3;
  • Fig. 5 is a sectional view of a part of the mechanism for circumferentially adjusting the plate carrying cylinder, taken along the line 5-5 of Fig.
  • Fig. 6 is a front end elevation of the mechanism shown in Fig. 3;
  • Figs. '7, 8 and 9 are respectively sectional views taken along the lines 'l'l, 88 and 99 of Fig. 3;
  • Fig. 10 is a rear end elevation of the drive mechanism taken along the line Ill-lilof Fig. 3.
  • the disclosed embodiment of the invention includes a unit box type frame I I having an angularly disposed elongated mechanism compartment l2 at its upper end.
  • the frame II is hollow and carries a chip pan [3 accessible through a door I4 adjacent its lower end.
  • the lower end of the compartment l2 constitutes the front of the machine where the operator stands, and a switch l5 for controlling themachine driving motor l6 may be conveniently disposed on the frame ll just beneath the front end of the mechanism compartment l2.
  • the frame compartment l2 contains a printing plate carrying cylinder ll disposed over and supported by a carrier I3 (Fig. 4) together with mechanism for adjusting the cylinder circumferentially relative to the carrier and axially with the carrier, and mechanism for trimming both of the end edges and one side edge of the printing plate 21 carried by the cylinder.
  • the cylinder I1 and carrier iii are disposed with their common axis at about 30 to the horizontal, as shown in Fig. 1. This permits the operator when standing in front of the machine to view the entire upper surface of the plate 21 without walking around the machine or materially changing his position.
  • the mechanism compartment I2 encloses approximately half of the cylinder I1 and a .cover H, hingedly secured to the compartment at 89, may be lowered to cover the upper half of the cylinder l1 during the trimming operation.
  • Four registering pointers I9 are adjustably supcorners of the printing plate 21.
  • Each pointer I9 is clamped to a block 20 by a set screw 2! passing through a slot 22 in the pointer, and an adjustable screw 23 is provided in an angular offset end of the pointer to permit fine'adjustment.
  • Each block 26 is clamped to and adjustable along a rod 24 fixed to the machine frame by brackets 25.
  • each pointer i9 may be adjusted to lie closely adjacent a register point 25 near one of the
  • the register points may comprise marks such as crossed lines formed on the plate when it is cast or if no such marks are provided, particular recognizable points in'the cut on the printing surface itself may be used for this purpose. It should be understood that each of the several printing plates used to print a given out are cast from similar matrices and that the register points 25 formed on the several plates are disposed 'in the same positions relative to the printed matter thereon.
  • the plate' is releasably held onto the surface of the cylinder I! by a pair of straps 36.
  • the straps 30 are preferably somewhat flexible and are lined with a suitable soft material such as the felt pads 3
  • One end of each strap 30 is pivotally secured to a hinge member 32 fixed to the cylinder IT at one side thereof and adjustable by means of the bolts 31 and 38 (Fig. '7).
  • the other end of each strap 39 carries an arm 33 journaled to a crank 34 carried by a shaft 35 rotatably carried in journals 36 fixed to the cylinder ll (Figs. 3, 6, '7 and 8).
  • the cranks 34 By turning the shaft 35 clockwise, as shown in Figs. 6, '7 and 8, the cranks 34 are carried past the center of the shaft axis to a locked position in which the straps 30 firmly clamp the plate 21 down onto the surface of the cylinder H.
  • the described plate clamping mechanism is operated by a hand crank 39 on the front end of the machine. As shown in Fig. 3, this crank is fixed to a shaft 40 journaled in the wall of the compartment I2 and a crank 4
  • a crank 46 fixed to the end of the shaft 43 atv the front of the cylinder ll carries 'a pair of spaced lugs l! which receive the pin 42 therebetween when the cylinder is in its starting position, as shown in Figs. 6, 7 and 8. In this position, the. shaft l3 is aligned with the shaft 40.
  • the cylinder I! has a hub 49 journaled on a hub to the carrier I8 adjacent the front end of the mechanism compartment, as shown in Figs. 3 and 4.
  • the head 5! at the opposite end of the cylinder i7 is journaled on hub 5 2 of the carrier i8 asshown in'the same figures;
  • the carrier hubs 55 and 52 are journaled respectively in suitable bearings .62 and 63""at the ends of the mechanism compartment i2.
  • the cylinder IT is rotatably adjustable rel ative to the carrier l8 by mechanism bestsho'wn in Figs. 4, 5 and 6.
  • a hand Wheel 53 is fixedto a central shaft 54 and connected through a pair of miter gears 55 to drive a threaded shaft 56 and so move a nut 51 along a radial way '51 at the front end of the carrier 18 (Figs. 4 and 5).
  • Log 58 on the nut 51 travels in a slot 59 in a circular plate 60 which is fixed to androtatably adjustable in the front end of the cylinder l1.
  • the longitudinal side edge' of the plate 2'! is trimmed by a rotary cutter Tl arranged to'both rotate and move longitudinally. of the plate as the cylinder I? is turned about its .axis.
  • the cutter 11 is carried by a shaft 13 extending through a longitudinalslot 19 in Set screws 6! are provided the cylinder H.
  • the shaft 18 is journaled in a traveler 8!] that is slidably mounted in suitable longitudinally extending guide grooves in the carrier IS.
  • a long pitch screw 82 threadedly engages the traveler 80 and moves it longitudinally as hereinafter explained.
  • the cutter shaft 11 is driven through the miter gears 83 and 84 from a center shaft '85 (Figs. 3 and 8).
  • the screw 82 is driven by a pinion 92 fixed to one end thereof and engaging an internal gear 93 which is journaled on the hub 94 of a gear 95 and is held against rotation by a slitting key 96 fixed to the wall of the compartment l2 as shown in Fig. 4.
  • rotation of the cylinder ll by the carrier I8 causes rotation of the long pitch screw 82 and thus moves the cutter Ti longitudinally along the edge H2 of the plate 21.
  • a guard or cover HIS! encloses the drive pulley llll of the motor l6 as well as the belts 9!] and the pulleys l6 and El which drive the cutter shafts as explained above.
  • An idler pulley HI may be provided for maintaining proper tension on the belts 90.
  • a printing plate 2? which serves as the key plate and which may comprise any one of the several plates of a set, is secured to the cylinder H on the raised portion 28 thereof with one side edge of the plate in contact with the bar 29 as shown in Fig. '7.
  • the four pointers I9 are then adjusted until each is in register with the corresponding point 26 on the plate Tl.
  • the operator then unlocks the mechanism by moving the handle m2 to the right as shown in Fig. 2, which lifts the lug 9? from the radial extension 93 of the groove 95 in the drive gear 95.
  • the operator then starts the motor l6 and rotates the crank M13 in a clockwise direction which turns the cylinder ll counter-clockwise as shown in Fig.
  • a curved stereotype plate supporting mechanism the combination with a carrier mounted to rotate about an axis, a plate carrying cylinder mounted on said carrier concentric with said axis, means for removably securing a curved stereotype plate to the surface of said cylinder, means for adjustably moving said cylinder circumferentially with respect to said'carrier, a plurality of fixed register pointers adjustably mounted adjacent the surface of said cylinder, and means for rotating said cylinder.
  • a carrier mounted on said frame to rotate about an axis, a cylinder on said carrier concentric with said axis, means for removably securing a stereotype plate to the surface of said cylinder, means for adjusting said cylinder circumferentially relative to said carrier and axially relative to said frame with said carrier, a plurality of register pointers adjustably mounted on said frame adjacent spaced points on said cylinder, and means for simultaneous rotating said cylinder and said carrier.
  • a curved stereotype plate supporting mechanism the combination of a fixed frame, a carrier mounted on said frame to rotate about an axis, a cylinder on said carrier concentric with said axis, means for rotating said carrier and said cylinder about said axis from a starting position, means on said cylinder for removably securing a curved stereotpye plate to the surface thereof, means on said frame for operating said securing means when said cylinder is stationary in the starting position, means for adjustably moving said cylinder circumferentially relative to said carrier, and a plurality of register pointers adjustably mounted on said frame adjacent spaced points on the surface of said cylinder.
  • a curved stereotype plate supporting mechanism the combination of a fixed frame, a carrier mounted on said frame to rotate about an axis, a cylinder on said carrier concentricwith said axis, means for rotating said carrier and said cylinder about said axis from a starting position, means on said cylinder for removably securing a curved stereotype plate to the surface thereof, means on said frame for operating said securing means when said cylinder is in the starting position, means for adjustably moving said cylinder circumferentially relative to said carrier, means for adjustably moving said carrier REFERENCES CITED
  • the following references are of record m-th file of this patent:

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
US508914A 1943-11-04 1943-11-04 Registering and trimming of printing plates Expired - Lifetime US2425580A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US508914A US2425580A (en) 1943-11-04 1943-11-04 Registering and trimming of printing plates
CH253024D CH253024A (fr) 1943-11-04 1945-05-08 Machine servant à repérer et rogner des clichés stéréotypes courbes.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US508914A US2425580A (en) 1943-11-04 1943-11-04 Registering and trimming of printing plates

Publications (1)

Publication Number Publication Date
US2425580A true US2425580A (en) 1947-08-12

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US (1) US2425580A (fr)
CH (1) CH253024A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626541A (en) * 1948-10-01 1953-01-27 Wood Newspaper Mach Corp Stereotype plate finishing machine
US2664788A (en) * 1945-11-16 1954-01-05 Goss Printing Press Co Ltd Stereotype finishing machine
US2668346A (en) * 1948-04-27 1954-02-09 Wood Newspaper Mach Corp Preregistering of plates by projection of register marks
US2714242A (en) * 1950-05-04 1955-08-02 Cleveland Shopping News Co Printing plate trimmer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2061292A (en) * 1931-09-25 1936-11-17 Goss Printing Press Co Ltd Stereotype plate trimming machine
US2177653A (en) * 1936-06-23 1939-10-31 Hoe & Co R Method and means for registering printing plates
US2207993A (en) * 1937-08-10 1940-07-16 Wood Newspaper Mach Corp Machine for treating preregistered printing plates
US2213110A (en) * 1938-01-15 1940-08-27 Wood Newspaper Mach Corp Plate finishing machine
US2216741A (en) * 1939-02-28 1940-10-08 Wood Newspaper Mach Corp Plate finishing machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2061292A (en) * 1931-09-25 1936-11-17 Goss Printing Press Co Ltd Stereotype plate trimming machine
US2177653A (en) * 1936-06-23 1939-10-31 Hoe & Co R Method and means for registering printing plates
US2207993A (en) * 1937-08-10 1940-07-16 Wood Newspaper Mach Corp Machine for treating preregistered printing plates
US2213110A (en) * 1938-01-15 1940-08-27 Wood Newspaper Mach Corp Plate finishing machine
US2216741A (en) * 1939-02-28 1940-10-08 Wood Newspaper Mach Corp Plate finishing machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2664788A (en) * 1945-11-16 1954-01-05 Goss Printing Press Co Ltd Stereotype finishing machine
US2668346A (en) * 1948-04-27 1954-02-09 Wood Newspaper Mach Corp Preregistering of plates by projection of register marks
US2626541A (en) * 1948-10-01 1953-01-27 Wood Newspaper Mach Corp Stereotype plate finishing machine
US2714242A (en) * 1950-05-04 1955-08-02 Cleveland Shopping News Co Printing plate trimmer

Also Published As

Publication number Publication date
CH253024A (fr) 1948-02-15

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