US2265716A - Rotary typographic printing press - Google Patents

Description

1941. H. M. BARBER ROTARY TYPOGRAPHIC PRINTING PRESS 3 Sheets-Sheet 1 Filed NOV. 14, 1940 I V INVENTOR Mg 210% ATTORNEYS Dec. 9, 1941. H. M. BARBER ROTARY TYPOGRAPHIC PRINTING PRESS Filed NOV. 14, 1940 3 Sheets-Sheet 2 7 m INVENTOR ATTORNEYS m 1941. H. M. BARBER 2,265,716

ROTARY TYPOGRAPHIC PRINTING PRESS Filed Nov. 14, 1940 5 Sheets-Sheet 3 ATTORNEYS Patented Dec. 9, 1941 ROTARY TYPOGRAPHIC PRINTING PRESS Howard M. Barber, Pawcatuck, Conn., assignor to C. B. Cottrell & Sons Company, Westerly, It. 1., a corporation of Delaware Application November 14, 1940, Serial No. 365,623 2 Claims. (01'. 101-178) In printing all-over designs by typographic presses it has heretofore been necessary to use an engraved form cylinder as there was no suitable available space on the cylinder for both the plates and their necessary clamping devices.

The object of this invention is to provide means whereby all-over designs may be printed typographically with ample space provided for the plates and their plate clamping devices.

This invention includes printing presses arranged to print in one or more colors, each color printing unit comprising a' pair of plate cylinders provided with duplicate plates clamped thereon and so arranged with respect to one another on the two plate cylinders that anall-over design may be printed by the coaction of the two plate cylinders.

This invention further comprises a single inking mechanism for both of the cylinders arranged to print a selected color, means being provided for supplying ink alternately to the two plate cylinders in the required quantity.

In the accompanying drawings;

Fig. 1 represents in diagram a side elevation of a five color rotary typographic printing press embodying my invention;

Fig. 2 represents a detail side elevation showing the interconnected drive for the several elements;

Fig. 3 represents a detail side elevation Fig. 7 represents a cross section taken in the plane of the line VII- VII of Fig. 5 looking in the direction of the arrows; and g Fig. 8 represents a development in plan of the plate arrangement.

The five color rotary typographic printing press herein illustrated is shown as comprising an impression cylinder, five pairs of plate cylinders coacting therewith and a single inking mechanism for each pair of plate cylinders. Each plate cylinder of a pair is arranged to carry one-half of the plates for a selected color, said plates being spaced apart in staggered arrangement to permit the locking of the plates on their cylinder in the 55 required positions with respect to the duplicate plates on its companion cylinder.

If desired,- a drying unit may be provided, which drying unit in the present instance is shown as located in position to dry the ink after three color impressions have been made on the web.

The impression cylinder is denoted by I, the traveling web by 2 and the drying unit by 3;

As the five printing units are the same except for the color to be printed, the construction, arrangement and operation of one only of these printing units will be specifically described herein.

One plate cylinder of the coacting pair of cylinders is denoted by 4, its plate inking rollers by 5,

their ink cylinder by 6 and its distributor roller by I. The other plate cylinder of .the pair is denoted by 8, its plate inking rollers by 9, their ink cylinder by ID and its distributor by I I.

The ink fountain is denoted by I2, its fountain roll by I3,- the 'ductor roller by I4, theink feed rollerby I5, the transfer roller by I6 and the ink drum by I1. This ink drum I1 is intermittently contacted by the distributor roller I to feed the ink to the plate cylinder 4 and itis at all times contacted by the distributor roller I I to feed the ink to the plate cylinder 8.

The fountain roll I3 andthe ductor roller I4 may be operated from the rotary cam shaft I8 as follows: a crank disc I9 on the cam shaft I8 is operatively connected by a rod 20 to one arm 2| of a rock lever pivoted on the shaft 22 of the fountain. roll I3; the other arm 23 of which rock lever carries a pawl 24 engaged with a ratchet wheel 25 fast on the said fountain roll shaft 22.

This rotary cam shaft I8 is provided with a cam 26 which is engaged by a stud or roller 21 ion the free end'of one arm 28 of a rock lever carried by a shaft 30, the other arm 3| of'which rock lever carries the ductor roller I4. A second rotary cam shaft 32 carries a cam 33 which is engaged by a stud or roller 34 on the free end of one arm 35 of a rock lever pivoted on the shaft 36 of the ink cylinder 6; the other arm 31 of which lever carries the distributorroller I. This cam 33therefore moves the distributor roller 1 into and out of contact with ink drum I1 at the proper intervals.

The driving'connection' between the several op erating elements is herein shown as follows: the impression cylinder gear38 is a wide faced gear and not only meshes with the two plate cylinder gears 39, 49 but also meshes with the gear 4| loosely mounted on the plate cylinder shaft 40*, which gear 4| meshes with an intermediate gear 4I This gear 4 I meshes with two ink cylinder gears 42., 43 and also with the ink drum gear 44.

' Thisink drum gear 44 meshes with an intermediate gear 45 which in turn meshes with the ink feed roller gear 46. This ink drum gear 44 also meshes with an intermediate gear 41 which in turn meshes with a gear 48 on the cam shaft [8 which controls the operation of the fountain roll and the ductor roller. This cam shaft I8 is i also provided with a small gear 49 which meshes of each pair being provided with duplicate plates.

2. In a rotary typographic printing press, a single impression cylinder, a pair of plate cylinders coacting with said impression cylinder to' ..ing press, a single impression cylinder, a plurality of pairs of plate cylinders coacting with said impression cylinder to print an all-over design in selected colors, and an inking mechanism iorl each pair of plate cylinders, the plate cylinclers of .each pair being provided with duplicate of the ductor roller l4 to the ink iced roller 151 thereby causing the ink supplied from thesink fountain P2 to be alternately fed to the plate cylinders i4 and .8. The supply of 'controlled by the distance the'iountail roll travels for each throw of the ductor roller. The supplies arefed'alternately to the plate cylinder 4 through the distributor roller 1 and :thento the plate cylinder -;8. through the distributor roller H. 'As-the'two-plate cylinders 4 and '8 which coact to print'an .all-oyerdesig'n in a selected color are duplicates, one ionly' of these plate cylinders hasheenlshownin' detail; plates which are arranged in staggered order "around :and along theplate cylinder, are denoted by 5 and the spaces between the plates are denoted by 52. It

wili be seen that these spaces provide ample room for the usual plate clamping devices, not

shown hereinflilt will also be seen that the plates overlap so that :theprinting surfaces of the plates on one cylinder are or sufilcient area to be complemented by the plates on. the companion cylinder, -whereby an uninterrupted all;

liver design may be printed by the coaction or V the plates orf the two. plate cylinders.

Itwill also -b'e seen that; the .samerfountain setting" can bfe-used' for-both plate cylinders as the plates on one cylinder are duplicates of the plates on the other cylinder.

It will also be seen that by placing. half of the plates on each plate cylinder an uninterrupted. alt-over design in typographic printing may be obtainedbecause; as heretofore stated, there is ample space left on both'plate cylinders to permit'theluseof the usual plate clamping devices. It 'is'obvi'ou's that to obtain the-desired all-over designprinting the two plate cylinders must be arranged and'adjusted to bring the plates on'the 1 second plate cylinder into position to print in the spaces left by the staggered relationship of the plates "o'n'th'e first printing cylinder.

It'isal'smobyious that in multicolor printing theiseyeral pairs ofplate' cylinders must be timed withirespect to one another so as to print in proper register the all-over design'in colors; *It'is evident that' various changesmay bore 1 sortedito in thecon'struction, form and arrange ment-of the several' p'arts without id'epalu'ting from the spiritand'scope' of my invention, andhence I donot-intehd'tdbe limited tothe particular embodiment herein shown and 'described,'but whatlmlaliniis:

"1 lzInaimulticolorrotary typographic printing I press; a single impression'cylinder, 'a plurality of pairs 'ofplate cylinderscoacting with said impression .cylinderto print anall-over design in selected colors, and an inking mechanism for eachgpair offplate cylinders; the 'plate cylinders:

V 911? 'Droperintervals.- I V V V In a ry typo phic printing, press, an

for each pair of plate cylinders, and means for supplying ink alternately'to the'plate cylinders of each pair.

5,. In a rotary typographic printing press, a

single impression cylinder, a pair of plate cylinders coacting with said impression cylinder to print an all-over design in a selected color, an inking'mechanism for said platecylinders, and mea-ns'for supplying ink alternately to the plate cylinders, said smeans including a ductor roller, a distributor roller and coacting elements for operating them at the proper intervals.

6,. In a multicolor rotary typographic'printing press, a single impression cylinder, a plurality of pairs of plate cylinders coacting with said impression -.cylinderto print an all-.overdesign in selectedcolors, an inking mechanism for each pair of plate cylinders, and means for supplying ink alternately to the plate cylinders: of each pair, 7

said means including a ductor roller, a distributor roller and coacting elements for operating them impression cylinder, apair of plate cylinders coacting to print an all-over design in a selected colon-an inking mechanism for-said plate cylinders, and means for supplying ink alternately to theplate cylinders, said means including, a ductor roller, a distributor roller and coacting elements for operating the ductor roller twice for each operation of the ,:distributor roller.

8. In a multicolor rotary typographic print ing press; an impression cylinder, a plurality of pairs of plate cylinders coacting to print an allover design in selected colors; an'inking mechanismtfor each pair of plate cylinders, and means for supplying ink altern'atelyi'to the plate cylinders of each pair, said means including a ductorv roller, a distributor roller andcoacting elements i or operating the ductorroller twice-for each operation of the distributor. roller. 7 a

9.. In. arotary typographic printing press,.an

impression cylinder, a pair of platejcylinders [coacting to printan all-over'desifgn in a selected, color, an inking mechanism for said plate cylinders, and means for supplyingink alternately to the plate cylinders, said means including a. ductor roller, a fountain roll and a distributor roller, a rotary cam shaft-for controlling the operation of the ductor roller and fountainroll and asecond rotary cam shaft 'for' controlling the operation of the distributor roller. 7

10. In a multicolor rotary typographic printing press, an impression cylinder, a plurality of pairs of plate cylinders coacting to print an allover design in selected colors, an inking mechanism for each pair of plate cylinders, and means for supplying ink alternately to the plate cylinders of each pair, said means including a ductor roller, a fountain roll and a distributor roller, a rotary cam shaft for controlling the operation of the ductor roller and fountain roll and a second rotary cam shaft for controlling the operation of the distributor roller.

HOWARD M. BARBER.

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