US367123A - tucker - Google Patents

Description

(No Model.) 6 Sheets-Sheet 1.

. DqTUOKER. WEB PRINTING AND DELIVERY MECHANISM.

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Patented July 26, 1887.

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- s. D. TUCKER.

WEB PRINTING AND DELIVERY MECHANISM.

INVENTOR.

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Patented July 26, 1887.

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' s. DQTUCKER. V WEB PRINTING AND DELIVERY MECHANISM. No. 367,123. Patent-ed July 26,1887;

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WEB PRINTING AND DELIVERY MECHANISM. N0.-3-67,123.- Patented July'Z6, 1887.

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UNITED STATES PATENT OFFI E.

STEPHEN.D. TUCKER, OF NEWV YORK, N. Y.

WEB PRINTING AND DELIVERY MECHANISM."

SPECIFICATION forming part of'Letters Patent No. 367,123, dated July 26, 1887.

Application filed April 27, 1882. Serial No. 59,747. (No model.) Patented in England October 3, 1831, No. 4,285.

To all whom it may concern.-

Be it known that I, STEPHEN D. TUCKER, a citizen of the United States, residing in the city of New York, county of New York, 'State of New York, have invented certain new and useful Improvements in Web Printing and Delivery Mechanism,(the said improvements being embraced in British Letters Patent N o. 4, 285, granted to William Conquest, October 3, 1881,) fully described and represented in thefollowing specification and the accompanying drawings, forming a part of the same.

The present invention relates to that class of web-printing machines in which the forms for printing both sides of the web are carried upon a single cylinder, andin which the web alter being printed upon one side is turned over and represented to the same forms to be printed upon its opposite side, the travel of the web between the printing of its opposite sides being so distanced that when the web is perfected the printed pages for one side of the sheet upon one side of the web will register with the pages for the opposite side of the sheet upon the opposite side of the web, and

vice versa.

It will readily be seen that the sheets severed from a web perfected in this manner will not pass to the delivery mechanism in a uni form position, but that one half of said sheets will have their outside pages uppermost,while the other half will have-their inside pages uppermost; and it will also be seen that, if the columns of the forms lie lengthwise of the formcylinder, (which is usually the casein this class 'of machines,) in addition to this the heads of impression -cylinders and a web turner arranged to co-operate therewith to print both sides of a web from the same forms, of a mechanism for severing the web into sheets and a collecting mechanism arranged to associate the sheets into lots, each of which lots shall contain sheets upon which the pages are printed in like order, all substantially as hereinafter described.

The invention also includes the combination, with the type or form cylinders carrying forms for printing both sides of the web, one-half of said forms being placed ateach end of the cylinder, of impression-cylinders and web-turning mechanism arranged to co-operate therewith to print both sides of the web from said forms, and mechanisms for splitting the web longitudinally into sections and for severing said sections into sheets, all substantially as hereinafter described.

. The invention also embraces various other details of construction and combinations of parts, all of which will be hereinafter fully de .is turned over between the printing of its op- Fig. 6 is a diagrammatic section posite sides. illustrating the manner in which the singlewidth printing mechanism is operated to produce two-page or half-sheet papers or supplements. Fig. 7 is a like view illustrating the manner in which the double-width printing mechanism is operated to produce four-page papers or supplements. Fig. 8 is a view of a single-width web, showing the order in which the pages will occur when it is printed for a four-page paper. Fig. 9 is a similar view showing the order in which the pages will occur when said web is printed for a two-page or half sheet paper or supplement. Fig. 10 is a view of a double-width web, showing the order in which the pages will occur when it is printed for an eight-page paper; and Fig. 11 is a simi lar view showing the order in which the pages will occur upon said web when it is printed for a four-page paper or supplement.

The printing mechanism illustrated in the Fig. 2 is a longitudinal accompanying drawings isa double one-that is to say, is adapted to operate simultaneously upon two webs of paper. This feature is not material, however, as the invention is equally applicable, as will hereinafter fully appear, to a printing mechanism which operates upon only a single web.

The construction of the mechanism in connection with its operation upon one of the webs will be first described, after which those parts which are added to eapacitate it to operate upon the second web will be pointed out, and, as far as may be necessary, described.

The type or form cylinder 5, which is of the usual construction and of a size sufficient to permit ordinary type to be securely fastened to its periphery, is mounted in bearings in a suitable frame, and, as here shown, is provided with four forms of type, 1 2 3 4, which for convenience it will be assumed are of the proper size for printing the four pages of an ordinary folio or four-page newspaper. These forms are, as is usual when printing from type, arranged so that their columns of matter lie longitudinally of the cylinder, and are, as shown, arranged in pairs located diametrically opposite each other upon the cylinder, each pair occupying one-fourth ofits circumference. The spaces upon the cylinder between the groups of forms are occupied by ink'distributing tables or surfaces (3, to which the ink is supplied from an ordinary ink-fountain, (not shown,) and from which it is taken and applied to the forms by ordinary inking-rolls, 20, as in the well-known Hoe type-revolving press.

As has just been explained, the forms do not cover the entire surface of the type or form cylinder, and this is due to the fact that in order to successfully secure ordinary type to a cylinder it is necessary that such cylinder should be of so large a size that the forms for printing an ordinary newspaper will not be sufficient to cover its whole circumference. It therefore becomes necessary in this class of machines, in order to print the whole surface of the web, that each form should act more than once upon the web at each revolution of the form-cylinder. This is accomplished by providing a plurality of impression-cylinders and a register roll or rolls for each side of the web, the number of such impressioncylinders and register rolls being determined by the proportion of the surface of the fornreylin der that is occupied by the forms. In the present case the forms, as just stated, occupy one-half of the circumference of the form-cylinder, and there are therefore provided two impression-eylinders and one register-roll for each side of the web.

The web to be printed is led from a roll, 7, and after passing beneath a guide-roll, 8, passes around the impression cylinder 9, thence outward around the register-roll 10, and thence inward around the second impressioneylinder, 11. In passing the cylinder 9 the web will receive impressions from the forms 4 and 1, and the part bearing these impressions will then pass around the roll 1(l,while the forms 4 and 1 will pass onward and give a second impression to that portion of the web passing over the cylinder 11. The roll 10 is placed at such a distance from the type-cylinder that the advance end of the impression given by form 4 upon cylinder 9 will arrive upon cylinder 11 just in time to exactly join with the rear edge of the impression given by form 1 upon that cylinder. From this it will be seen that this pair of forms makes two impressions upon the web in succession, the second impression being just in advance of the first. Following the rear edge of the impression made by form 1 upon cylinder 9 will be a blank space equal to the space upon the type-cylinder between forms 1 and 3, which space is just equal to the length of a pair of forms. At the end of this space the forms 3 and 2 will make impressions upon the web upon cylinder 9, and, passing to cylinder 11, will make second impressions just in advance of the first, which second impressions will just fill the blank space referred to. This operation being repeated at each revolution of the type-cylinder, one side of the web will be wholly covered, the impressions of each pair of forms occurring twice in successionas4 and 1, 4 and 1, 3 and 2, 3 and 2, 4 and 1, &c.as shown in Fig. 8. After passing impressioncylinder 11., the web, now printed upon one side, is conducted around guide- rolls 12, 13, 11, and 15 and a web-turncr onto the third impression-cylinder, 16.

The web-turner, as shown, is composed of a leadingroll, 1S), and fixed bars 17 18, arranged at right angles to each other and obliquely across the path of the web. (See Fig. 5.) In order to turn over or reverse the web, so as to present its unprinted side to the type, it is led under and around bar 17, thence laterally and downward around roll 19, and thence inward and upward. around bar 18, thus bringing its printed side uppermost, as shown in Fig. 5, and next to the impression-cylinder, and consequently its blank side to the type.

The roll 14- is journaled in the ends of arms 23, extending from the rock'shaft 24, which is provided with a worm-gear, 25, and controlled by a worm, 26, so as to effect a nice adjustment of the roll 14, to vary to any desired eX tent the distance traveled by the web between the cylinders 11 and 16 in order to secure the proper registrations between the impressions upon its opposite sides. After passing cylinder 16 the web passes outward around the register-r0112], and thence returns inward and passes around cylinder 22. The operation of the forms upon the type-cylinder, in connection with impressioncylinders 16 and 22, to print the side of the web now presented, is exactly the same as that already described in connection with cylinders 9 and 11 in printing the first side of the web, and therefore needs no specific description.

The distance traveled by the web between the cylinders 11 and 16 is so re ulated by the position of the roll 11 that the impressions IIC made by the forms 3 and2 upon the second side of the web will be opposite those made by the forms 4 andl upon the firstside, and vice versa, and the forms4 and 1 are placed upon the cylinder with their columns headed in the opposite direction to that of the columns'of the forms 3 and 2, (see Fig. 8,) sothat after the web is turn ed over the columns of the registering impressions upon its opposite sides will be headed in the same direction.

In printing the web -by a mechanism such asjust described it will be observed that no one of theimpressicucylinders is continuously in contact with the forms, and, that there are times when at least three, and if they are mounted in a slightly different relation to each other from that shown, even all four, of theimpression-cylinders will be out of contact with the forms. This intermittent action of the printing devices has been found to cause such an irregular feeding of the web, when, as has heretofore been customary, theprinting mechanism has been depended upon for that purpose, that it is impossible to secure accurate registration between the different impressions. To cure this defect and to give a positive and uniform feed to the web, the rolls 10 and 21 are provided with coacting forwarding-rolls 27 and 28, which are provided with yielding peripheries, and preferably so placed as to bear upon the margins of the web. The-shafts of the rolls 27 and 28 are supported in slidingjour- 'nal-boxes, which are pressed by springs con trolled by set-screws, so that any desired degree of pressure on the web may be obtained. The roll 21 is positively driven from the inipression-cylinder 22 thropgh intermediates 31 and 32, and the roll 10 from the drivingshaft through intermediates 29 and 30. The forwarding-rolls 27 and 28 may be geared to the rolls 10 and 21, or not, as may be found desirable. The feeding devices just described are not, how ever, herein claimed, as they are theinvention of another. I

After receiving its final impression upon the cylinder 22, the web passes between the cutting cylinders 33 and 34, by which it is partially severed upon the lines 2 z, (see Fig. 8,) and into the bite of the two series of tapes 35 and 36, which are accelerated in the usual manner to part the sheets from the web. The upper set, 35, of these tapes pass around pulleys 37, over pulleys 38, under pulleys 39, over pulleys 40, thence downward inside of pulleys 41 and around roll 42, returning over pulleys 43. The

under set,36,pass around pulleys 44, over pulleys 38, thence around the gathering or collecting cylinder45 and over pulleys 40, thence downward inside of pulleys 46, outside of pulleys 47 and roll48,andinsideof 1 01149, returning around pulleys 50 and roll 51. Co-operating with the tapes 85 and 36 are two sets of supplemental tapes, 52 and 53. The set 52 pass around pulleys 51 and downward around pulleys 55,returning outside of roll 56. The set 53 pass around pulleys 47 and roll 48, above roll 49,

e and around roll 57, returning inside of pulleys 55 and outside of roll 56'. The sheets, after being parted by the tapes 35 and 36, pass downward around pulleys 38, and are by the fixed guides 58 conducted onto the gatheringoylinder 45, which operates in the well-knownmanner to associate the sheets in pairs. \Vhen a pair of sheets have been associated, they are guided off the cylinder by the switches 59, which are operated at every second revolution of the cylinder by the cam 60 and its connections inthe usual manner. The pair of sheets thus thrown off the cylinder will pass over the pulleys 40 and downward between the pulleys 41 and 46, when they will be deflected by the switches 61, so as to pass between pulleys 46 and 47 and into the bite of the tapes 36 and 53, by which they will be carrieddownward until they issue from between rolls 49 and 57 in front of the fly, by which they will be flown in the usual manner. hen the next pair of sheets pass from the cylinder 45, the switch 61 will have been shifted, so that they will be guided between pulleys 41 and 54 and issue from between roll 42 and pulleys 54 and pass downward with tapes 52 in front of the upper fly, to be flown in like manner. The parts will be so timed that each pair of sheets associated by the cylpages 4 1 upon theirupper sides will be asso- I ciated to form one pair, those having pages 3 2 to form the next pair, and thosehaving pages 4 1 to form the third pair, 810. From this it will result that as the alternate pairs go to different flies all the sheets delivered by each fly will have the same side uppermost, and the heads of'the columns will all be at the same side of the pile.

The type-cylinder in machines of the class just described is not always made of such a size that the forms cover one-half of its circumference. The proportion of the circumference of the cylinder occupied by the forms will depend upon the number and size of the forms, and the number of the impression-cylinders and register-rolls will be governed by the proportion of the circumference of the cylinder covered by the forms; but the gathering-cylinder will be operated in all cases so v that the sheets having their columns headed in the same direction will be associated and sent to the same fly. It is the attainment of this desirable result that makes the hereindescribed delivery apparatus particularly applicable to a printing mechanism of this class.

The shaft of the switch 61 is provided with an arm, 62, to which is connected the rod 63, the lower end of which engages with a cam of suitable form upon the transverse shaft 64, by which the switch is operated at the proper times. The shaft 64 is driven through bevelgears 66 and 67 from the longitudinal shaft68, which receives its motion from the drivingshaft through worm and wornrgear 70 and 71. Thesh aft 64 is also provided with cams, which, through suitable connections, as shown in Fig.

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1, operate the flies in the usual manner. The type and impression cylinders are driven by connecting-gears in the usual manner, motion being communicated to them through gear 29 from gear (39 upon the drivingshaft.

The various sets of tapes, as well as the galhering-cylinder, are driven by suitable connecting-gears, motion being communicated to them from the cutting-cylinders through the train of intermediates 65, the cuttingcylinders themselves being driven from impressioncylinders 22 through intermediates 31.

In order to double the capacity of the machine, it may, as shown in the present case, be provided with a second set of impressioncylinders and delivery apparatus located upon the opposite side of the type-cylinder. These mechanisms are exact duplicates, both as to construction and operation, of those already described, except that they are located differently with relation to the type-cylinder. The roll 72, from which the second web is led, and the first pair of impression-cylindcrs and register-roll 73, 71, and are located at the top instead of at the bottom of the machine, and the second pair of impressioncylinders and register-roll 75, 76, and 86, web-turners 77, 78, and 79, cutting-cylinders 80 and 81, tapes 82 and 83, and gathering-cylinder Si are correspondingly reversed in position.

In the use of all web-printing machines, and particularly of those of the character herein shown, considerable delayhas been occasioned by the difficulty experienced in threading or passing the leading end of the web through the machine. To facilitate the threading, these machines have been provided with tapes which followed the course of the web through the machine, and were arranged to bear only upon the margins of the web, so as not to interfere with the printing. -While tapes so arranged operated satisfactorily in threading the machine, it was found in practice that they caused the web to wrinkle more or less, and that consequently it was very undesirable to have them in contact with the web while the printing was in progress. This difficulty is avoided in the present invention by placing the threading tape or tapes outside the margins of the web, so that while the printing is in progress the tape or tapes and the web will be entirely disconnected. For this purpose the machine is provided with the tape 87, which passes around guideroll 8 just outside the edge of the web, at one side of the machine, (see Figs. 2 and 3,) follows the course of the web through the first printing mechanism and to the web-turner, then around the web-turner, by which it is transferred to the opposite side of the machine, (see Fig. 5,) then with the web through the second printing mechanism and into the bite of the tapes 35 and 36. From this point it passes around rolls 88, S9, 90, and 91, and again around roll '8, but on the opposite side of the machine from that at which it entered. From this point it again follows the course of the web through the first printing will be printed as shown in Fig. 10.

mechanism to the turner, then again around the turner, by which it is transferred back to the side of the machine from which it started, after which it passes again through the second printing mechanism and around the guiderolls 88, &c., back to the point of startin Vhen the leading end of the web is to be conducted through the maehine,a stout thread, 92, is made fast to the tape at one side, and is then passed in and out across the end of the web in a series of stitches and made fast to the tape at the other side, as shown in Fig. 3. The machine being then started slowly, the end of the web will be carried forward by the tape and introduced through the entire printing mechanism. \Vhen the end of the web has been carried into the bite of the tapes 35 and 36, the threading is complete and the thread 92 is removed or detached from the tape at both sides of the web.

By means of the tape arranged as just described, it will readily be seen that the web can be led through the machine as desired, and yet the tape be entirely free from the web during the printing, so that all wrinkling is prevented.

XVhen tapes are used which press upon or grasp the margins of the web, it is necessary to employ two sets, one for each surface; but by the present system only one tape or pair of tapes is or are necessary, and thus one-half the tapes and a portion of the rolls for guiding them are dispensed with.

Then a web-turner is used so that the tape will be crossed, as in the present case, a single tape only is necessary, as has been shown; but where a webturner is not usedit will ofcourse be necessary to employ two tapes, one for each side of the machine.

A tape, 93, corresponding to the tape 87 and passing around rolls 98, 99, 100,and 101, is employed in the duplicate printing mechanism at the rightofthe type-cylinder, as shown in Figs. 6 and 7.

W'hen it is desired to produce only folio or four-page papers, the various cylinders, rolls, &c., of the mechanism just described will be of a length suitable for operating upon a single'width web, as shown in Fig. 3; but if it is desired to capacitate the machine to prod uee quarto or eight-page papers the parts will be made of double such length, so as to be capable of operating upon a double-width web, as shown in Fig. 4-. 1n thelatter case the forms will be placed upon the type-cylinders with the heads of the columns lying together at the center, one group of forms containing matter for pages 8 l and 5 l, and the other group matter for pages 6 3 and 7 2, so that the web The web will bescvered upon the lines 00 a7, and the corresponding pairs of sheets associated and delivered in the manner already described.

Vhen it is desired to produce two-page papers or supplements on a single-width machine,it may be done by the arrangement shown in Fig. 6.

The type-cylinder, instead of carrying four forms, will of course carry two, and

and 11, where it will receive two impressions from each of the two forms upon the type-cylinder, which impressions will be separated by blank spaces equal to the width of the forms removed. The web will then be turned and rec e1ve the same impressions upon its opposite side while passing around cylinders 16 and 22,

' page 6 falling opposite to page 5, and vice versa.

After this it will be led over adjustable guiderolls 94 and 95 and around cylinders 73 and 74, where it will again receive the sameimpressions upon the same side. The rolls 94 and 95 are, however, so adjusted that the web in passing over them will travel such a distance that the impressions received upon cylinders 73 and 74 will cover the blank space between the impressions received upon cylinders 16 and 22',so that one side of the web will now be entirely printed, theimpressions occurringin the ordershown in Fig. 9 that is to say, there will be four pages 5, followed by four pages 6,&c. After passing cylinder 74, the Web is turned and passes around cylinders 75 and 76, where the printing of the first side is completed by filling in the blank spaces left in passing cylinders 9 and 11. 1 The web now passes between the cutting-cylinders 80 and 81, which, in addition to the severingblade 96, are supplied with a perforator, 97, so

.that the web will be severed upon the linesyg and perforated upon the lines o '0.

After this the sheets will be associated in pairs and deliv-- ered to the flies in the manner already set forth.

Thesheets in this case will each contain two supplements, which can, by reasonof the lines of perforations, be readily torn apart by hand when desired. In threading the machine in this case the end of the web will be fastened to the tape 87, by which it will be led forward un-' til it has passed around cylinder 22, when it will be detached from the tape 87 and carried over rolls 94 and 95 to tape 93, to which it will be secured, and which will conduct it through the second printing mechanism to the bite of the tapes 82 and 83.

The-operation of the machine in producing folio or four-page papers from a single-width web has already been explained. If, however, it is desired to produce four-pagepapers or supplements from a double-width web,it may be done by arranging and operating the double-' width machine in the manner illustrated in Fig. 7. V J

The forms for printing the four pages will be placed upon the type-cylinder in a single group, and a dummy, 102, will be placed opposite to properly balance the cylinder. The forms for printing the first and fourth pages of the paper or supplementor, in other words, the forms for printing one side of the sheetwill be placed side by side upon one end of the typecylinder, and those for printing the second and third pages-that is to say, the other side of the sheetwill be placed upon the other end of the cylinder, the heads of the columns of all the forms being at the center of the cylinder. If, as illustrated in Fig. 11, a supplement for an eight-page paper is to be produced, the forms for printing pages 9 12 will be upon one end of the cylinder and the forms forpages 10 11 upon the other. Adoublewidth web will then be led from the roll 7, and in passing over cylinders 9 and 11 will receivetwo impressions, as a b,- but, there being no forms upon the opposite side of the type-cylinder, the spaces ad will be left blank, after which blank spaces will follow impressions e f, made by the forms at the next revolution of the type-cylinder. The web, after passing cylinder 11, will be turned, and in passing cylinders 16 and 22 will receive the same impressions upon its opposite side. The turning of the web, as will be readily understood, will cause pages 9 12 to be printed opposite to pages 10 11, and vice versa. After leaving cylinder 22 the Web will be led around rolls 94 and 95 to cylinders 73 and 74, where the spaces left blank in passing cylinders 16 and 22 will be printed,after which it is again turned and led to cylinders 75 and 76, where the spaces 0 d left blank in passing cylinders 9 and 11 will receive impressions, which will complete the printing of the web. The web thus printed will be split upon the line uubyaslitter, as 300, located at any convenient point, and then severed upon the lines to w by the cutting-cylinders, after which the sheets will be associated and delivered in the manner already described.

.By reference to Fig. 11 it will be observed that when a double-width web is perfected in this manner and then split longitudinally into two sections the sections are duplicates as to printed matter, but that the pages upon the under sideof one section are upon the upper side of the other, and vice versa, and also that each section contains a series of complete sheets or products, all the sheets of each section having the same pages uppermost. It-will also be observed that by this means fourpage papers or products can be produced from a single double-width web without duplicating the forms and with the same rapidity that they can be produced from two webs upon asingle-width machine operated at the same speed. When this product is being produced, twopairs or lots of associated sheets will of course pass side by side to each of the flies, and the sheets will be laid in two side-by-side piles upon the tables; but all the sheets of each pile will have the same pages uppermost, so that no confusion will be occasioned.

What I claim is 1. The combination, with the type or form cylinder 5 and'impression-cylinders, and a web-turner arranged to co-operate therewith to print both sides of a web from the same forms, of a mechanism for severing the web into sheets and a collecting mechanism ar- ICO ranged to associate the sheets into lots, each of which lots shall contain sheets upon which the pages are printed in like order, all substantially as described.

2. The combination, with the type or form cylinder 5 and impression-cylinders, and a web-turner arranged to co-operate therewith to print both sides of a web from the same forms, of a mechanism for severing the web into sheets, a collecting mechanism arranged to associate the sheets into lots, each of which lots shall contain sheets upon which the pages are printed in like order, and means for directing the diffferent lots to separate piling mechanisms, all substantially as described.

3. The combination, with a web-printing mechanism in which the same form makes a plurality of impressions upon the same side of the web at each revolution of the type or form cylinder, of a web-severing mechanism, a mechanism for associating like sheets together, and means for directing the lots of associated sheets into different pathways, all substantially as described.

- 4. The combination, with a web-printing mechanism in which the same form makes a plurality of impressions upon the same side of the web at each revolution of the type or form cylinder, of a web-severi ng mechanism,a mechanism for associating like sheets together, means for directing the lots of associated sheets into different pathways, and two piling mechanisms for piling the sheets emerging from the different pathways, all substantially as described.

5. The combination, with the type or form cylinder 5, two sets of imprcssioncylinders, each set consisting of a plurality of cylinders, a web-turner, and suitable register-rolls, as 10 and 21, of a web-severing mechanism and a collecting mechanism arranged to associate the sheets into lots, each of which lots shall contain sheets upon which the pages are printed in like order, all substantially as described.

6. The combination of the type or form cylinder carrying the forms for printing both sides of a web, with sheets which occupy only half the width of the web, the forms for printing the pages on one side of the sheet being placed at one end of the cylinder and those for printing the pages on the other side of the sheet at the other end of the cylinder, with the heads of their columns pointing in the opposite direction, impressioil-cylinders and webturning mechanism arranged to co operate with said form-cylinder to print both sides of the web from said forms, and mechanism for slitting the web longitudinally into two seotions and for severing said sections transversely into sheets, whereby there are produced from a single wide web duplicate side by-side streams of papers, all substantially as described.

7. The combination of the type'or form cylinder 5, carrying the forms for printing both sides of a web, with sheets which occupy only one half the width of the web, said forms being arranged in a single group, with those for printing the pages on one side of a sheet at one end of the cylinder and those for printing pages on the other side of the sheet at the other end of the cylinder, with the heads of their columns pointing in the opposite direction, impression-cylinders and web-turning mechanism arranged to cooperate with said form-cylinder to print both sides of the web from said forms, and mechanism for slitting the web longitudinally into two sections and for severing said sections transversely into sheets, whereby there are produced from asingle wide web duplicate sidc-byside streams of papers, all substantially as described.

8. The combination, with the type or form cylinder 5 and the four sets of impression-cylinders and cooperating registerrolls and webturners, of guiderolls, as 94: and 95, substantially as described.

9. In a web-printing mechanism, a threading-tape located just outside of each edge of the web and following its course through the machine, substantially as described.

10. The combination, with the type or form cylinder 5, provided with co operating in1 pression-cylinders and web'turners, by which it is capaeitated to sim ultaneonsl y perfect two webs from the same forms, of leading-rolls which are so arranged that when one of said webs is omitted the other can be led to and operated upon by all of said impression-cylinders and web-turners, all substantially as described.

In testimony whereof I havehereunto set my hand in the presence of two subscribing witncsses.

STEPHEN D. TUCKER. Witnesses:

Cults. \V. CARPENTER, ALBERT S. BURLINGTIAM.

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