US901312A - Printing-press. - Google Patents

Description

A. E. DOWE-LL.

PRINTING PRESS.

' nrmonron nun 11.24, 1901.

Patented Oct. 13, '1908.

WITN $555 INVENTOR:

flit/writ fiowell ARTHUR E. DOWELL, OF WASHINGTON,

PLEX PRINTING PRESS OF MICHIGAN.

DISTRICT OF COLUMBIA, ASSIGNOR TO DU- COMPANY, OF BATTLE CREEK, MICHIGAN, A CORPORATION PRIN TIN G-PRE SS.

Specification of Letters Patent.

Application filed January 24, 1907. Serial No. 353,922.

Patented Oct. 13, 1908.

To all whom it may concern:

Be it known that I, ARTHUR E. DOWELL, of Washington, in the District of Columbia, have invented certain new and useful Improvements in Printing-Presses; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification.

The present invention is an improvement in flat bed type-printing webperfecting presses; its object is to enable a press of the same general construction as the well-known duplex press(which as now constructed is capable of perfecting newspapers of only eight pages or less with'two beds and two cylinders,)to produce newspapers of any desired number of pages up to sixteen (in multiples of two) by using two beds and two cylinders only. And when printing two, four, six, eight, twelve or sixteen pages, only one web need be used of proper width; and when printing ten or fourteen pages two webs can be used, or one web can be used if split before being fed into the press.

The invention therefore consists in the improved construction and novel method of operating the press as hereinafter explained and will be fully understood from the following specifications in connection with the accompanying drawings, in which Figure 1 represents a longitudinal diagrammatical sectional elevation through a complete press. Figs. 2, 3, 4, and 5, are diagrammatical views showing the arrangement of forms on the beds of the press to print different sized papers.

The type-beds 1, 1*, as shown are arranged as in the well-known duplex flat bed press. Impression cylinders 2, 2 are reciprocated back and forth over these beds. The beds are made long enough to contain two rows of typeforms, as indicated in diagrams Figs. 2 to 5, and the cylinders have a travel sufiicient to carry them clear across the ty e-forms.

In t e ordinary eight-page duplex press there is but one row of type-forms placed on each bed each row can contain as many as four page-forms, and the total capacity of the press is eight newspaper pages at each operation. If the same width of press is maintained, but the length of beds doubled, so that each bed can contain two rows of pageforms, (eight page-forms on each bed); the maximum capacity of the press would be sixteen pages. The only change thus far involved in the ordinary duplexpress would be increasing the travel of the cylinders, and increasing the speed and capacity of the feeding and delivering mechanisms so that they will feed and deliver the proper amount of web for the double length of impression; and make the looping mechanism takecare of the extra length of web fed in by the feed mechanism and demanded by the delivery mechanism during impressions, and also shift the web properly over the beds in the intervals between im ressions. Such ress vwould be capable of printing four, eight,

twelve, or sixteen pages from one web at each operation. ten or fourteen pages, as the forms cannot be arranged so as to produce such result with one web, without also producing two blank pages.

The object of this invention is to enable such press to produce ten or fourteen pages also, and for this purpose I provide the press with an auxiliary feed and delivery mechanism adapted to feed a second web (or one part of a split web) through the press at a It cannot however print slower speed than the other web, (or part of split web) so that while eight, or twelve pages are printed on one web, two pages can be printed on the second web; and the two webs assembled.

Further objects are to enable the webs to be printed simultaneously by the same beds and cylinders, and to move the narrow web through the press at a less speed than the wide web, so that successive impressions can be imprinted on the narrow we from single page-forms on each bed, while the wide web is simultaneously imprinted by the double page-forms on each bed. 7

The invention will be clearly understood from the following explanation of the drawlngs.

When printing four, eight, twelve, or sixteen pages, but one Web W is employed, which I term the wide web. This web is led in from a roll through the infeed mechanism 3, under guide 4, over suitable looping rollers, to guide 4, to cylinder guide 4 down between cylinder 2 and bed 1, up over cylinder guide 4", back to guide 4, up over guide 4 to cylinder guide 4*, down between cylinder 2 andbed 1?, overcylinder guide 4 to guide 4 over upper looping devices to the delivery 6. The parts mentioned may be constructed and operated as in the duplex press, the web being fed, delivered and looped so that impressions are takentherefrom on each bed as in the duplex press. But owing to the use of two rows of page.- forms on each bed, there is more web fed and delivered during impressions, and more web shifted between the beds and cylinders after impressions than in the ordinary duplex press where the rows of forms are but one page wide.

The arrangement of forms for printing eight, twelve and sixteen pages is indicated in diagram Figs. 4, 3, 2, and only one wide web W is required.

When printing ten or fourteen pages, I use two webs, or rather one wide web split into two parts, one web W for eight or twelvepages is employed, and another web to for two pages; the forms for eight or twelve pages are arranged in two rows on the beds as above described, and as they would be if only an eight or twelve page aper was to be produced. Then on each lEed beside the double rows of forms thereon, is placed a one-page-form, which may be located centrally of or at either side of the bed, as de sired, so that the impressions taken therefrom will properly register. Diagram Fig. 4 shows the arrangement of forms for a tenpage paper-and diagram Fig. 5 shows the arrangement for a fourteen page paper; the forms are numbered in the figures so that their arrangement will be readily-understood. Then a second web to (which I term the narrow web) is led through the press, beside web W from the guide 4 to the guide 4 so that such second web (or part web) is imprinted at the same time and by the same means as the wide web (or part web) W The narrow web w however has to travel but half as rapidly as the wide web, as it only has to be shifted one page length or width after each printing operation, while web W has to be shifted two page widths or lengths, after each printing operation. Therefore while web to can be guided through the press and printed by the same means as web W, it has to be fed and delivered at a different speed, and correspondingly looped. To take care of web w, I provide an auxiliary feed mech anism 3* which can be conveniently arranged at one side of the press beside the main feed mechanism 3, but will operate to feed web to at say approximately half the speedat which web W is fed. Simultaneously an auxiliary delivery mechanism 6 is arranged in the press beside the delivery mechanism 6, and operating to deliver web wat approximately half the speed of delivery of'web IN. This difference in the in-feed and delivery of webs W, w, necessitates a corresponding variation in extent of the looping of such webs. The roll 3 may be driven by gear 3*, and intermediate. gear 5 from a gear 5 on the shaft 5 of cam 5. Roll 3* is driven from gear 3*, at half speed, by gear 3. Roll 6 has a gear 6 meshing with a larger gear 7 on roll 6; and roll 6* is driven by gear 7 and intermediates 7 7 from gear 3 on roll 3*. In this way the desired relative speeds of the web feeding and delivering rolls can be obtained.

While each web may be looped independently if desired, a very simple andconvenient means for looping them correctly and in proper relation and time, is shown in the drawings, in which the ordinary looping mechanism of the duplex press is employed with very slight modification. The looping frame 5 is operated by lever 5 and cam 5' as in the ordinary duplex press. This frame carries looping rollers 5 5 as in the ordinary duplex press; and it also carries addi' tional looping rollers 5 5, beside the rollers 5 5. And on the frame of the press in addition to the usual guides 4 4 two guides 49,4 are employed. The wide web W is looped over both rollers 5 5 and un der both rollers 4 4 before entering the printing mechanism; and it is looped over both rollers 4 4 and under both rollers 5", 5 after leaving the printing mechanism. Whereas the web to is looped only over one roller, say 5*, before reaching the printing mechanism and only over one roller, say 5, after being printed-consequently it will be observed that the web WV-by reason of the double loops,will be taken up by the lower loopers and given out by the upper loopers, twice as fast as the web w will be, and each web will be properly looped, and shifted through. the press in the proper time and manner, and practically by the same mechanism, yet the narrow web w is fed and delivered at but half the speed of the wide web W. In order to assemble the webs properly, the web to may be severed by cutting \cylinders 7 after passing delivery 6 and.

then carried forward at proper speed by tapes 7 to the folding mechanism. The means for assembling the two webs however forms no part of present invention and any of the well-known devices can be used.

While the invention will be described as adapted to duplex presses, it is equally applicable to presses in which the beds are arranged in different relations to each other or to the cylinders, and can be also embodied in a single-acting press, and in one adapted to print only one side of a web.

Having described my inventionwhat I claim as new v and desire to secure by Letters Patent is 1. In combination a printing couple, guides for directing two parallel webs through the printing couple side by side, and

means for feeding and delivering said webs at relatively different speeds and a single looping mechanism for both webs.

2. In combination a printing couple, and means for feeding a plurality of webs side by side through said couple, and means for moving one web forward faster than the other and a single looping mechanism for both webs.

3. In a web printing press, the combination of a bed, and a cylinder co-acting therewith; and means for feeding two Webs at different speeds between the bed and cylinder and a single looping mechanism for both webs.

4. The combination of a bed and cylinder printing couple, guides for directing two parallel webs between the printing couple side by side, and means for feeding said webs through the press at different speeds and a single looping mechanism for both webs.

5. In combination with a bed and cylinder printing couple, means for feeding two webs side by side between the bed and cylinder, and a single looping means for moving a greater length of one web than of the other between the bed and cylinder after impres sions.

6. In a web printing press, the combination of a stationary bed, and a reciprocating cylinder coacting therewith; with means'for feeding two webs at different speeds between the bed and cylinder to be simultaneously printed thereby and a single looping mechanism for both webs.

7. In combination with a bed and cylinder printing couple, means for directing two webs at different speeds between the bed and cylinder, feeding and delivering mechanism for the fast web and feeding and delivery mechanism for the slow web and a single web looping mechanism.

8. The combination of a bed and cylinder printing couple, guides for directing webs of paper between the bed and cylinder, a plurality of web manipulating mechanisms op erating at different speeds, and adapted to move a plurality of webs through the ress at different speeds and a single web lboping mechanism.

9. In combination a bed and cylinder, and guides for directing a web or webs between the bed and cylinder; feeding, and delivering mechanism for moving one web at a predetermined speed through the press, and feeding, and delivering mechanism for moving a second web through the press at a different rate of speed and a single web looping mechanism.

10. In combination a pair of beds and cylinders, and guides for directing a pair of webs successively between the beds and cylinders, with a set of feeding, and delivering mechanisms for moving one web through the press, and a second set of feeding, and delivering mechanism for moving the second web through the press at a different rate of movement and a single web looping mechanism.

11. The combination of two stationary beds and two reciprocating cylinders, and guides for directing webs of paper between the beds and cylinders; with a plurality of Web feeding mechanisms operating at different speeds and adapted to move the several webs through the press at different rates of speed and a single looping mechanism operating on both webs.

12. The combination of a bed and cylinder printing couple, guides for directing a plurality of webs side by side between the bed and cylinder, a plurality of continuously acting web feeding mechanisms operating at different speeds, a plurality of continuously acting web delivering mechanisms operating at different speeds wherebya plurality of webs are fed to and delivered from the press at different relative speeds, and a compensating device whereby the intermediate portions of the webs in the press are simultaneously stopped during impressions and shifted for-' ward after impressions.

13. The combination of a pair of stationary beds and co-acting impression cylinders and guides for directing a plurality of webs side by side successively between the beds and cylinders; with a continuously acting feeding mechanism for each web, a continu ously acting delivering mechanism for each web whereby a plurality of webs are fed to and delivered from the press at different relative speeds, and a looping mechanism whereby the intermediate portion of each web is simultaneously stopped during impressions and shifted forward after impres- 810118.

In testimony that I claim the foregoing as my own, I affix my signature in presence of two witnesses.

ARTHUR E. DOWELL.

Witnesses:

JOHN L. FLETCHER, JAMES R. MANSFIELD.

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