US1258875A - Flat-bed printing-press. - Google Patents

Description

P. f. cox'. FLAT BE-D PRINTING PRESS.

l APPLICATION FILED FEB. 2. |917. 7 Y s 129 3 SHEETS-SHEET I,

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IIIIIIII- llm IIIIIIII P. `F. COX. FLAT BED RmNTlNG Plalsss APPLICATION FILED FEB. 2. |917.

Patented Mar. 12, 1918.

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APPLICATION FILED FEB. 2. 19H'.

Patented Mar. 12, 1918.

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PAUL r. COX, or CIIICAGO, ILLINoIs, AssIGNon To PHE Goss PRINTING PRESS COMPANY, or CHICAGO, ILLINOIS., A CORPORATION or ILLINoIs.

FLAT-snp PRINTING-Penes.

Specification of Letters Patent.

Patented Mar. 2,191 8.

Application filed February 2, 1917. Serial No. 146,243.

vTo all whom t may concern:

Beit knownthat AI, PAUL F. COX, a citizen of the United States, and a resident of Chicago, in the county .of Cook, State of illinois, have invented certain new anduseful Improvements in Flat-Bed'Printing- Presses, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to flat bed web-perfecting printing presses of the type in which the impression cylinders are reciprocated across stationary fiat beds which support the forms in vsuitable chases. In orderto support the form in a chase comprising a four-sided frame without the use of a lbottom plate or other closure means for the type to rest upon, it is necessary that the sides of the chase be made of some llittle width in order to provide the requisite strength to prevent distortion when the form is wedged into position therein by the use of the customary quoins or other furniture. By reason of the necessity for providing chases having sides of some considerable width, the forms in chases arranged upon va bed adjacent to each other have tnecessarily beenyseparated by a considerable distance. In case the sides of the chase were made an inch and a half wide, the distance between adjacent forms would be at least three inches, and this distance` can be lessened very little it' at all without danger of `unduly weakening the chases.

W hen in the production of a six or eight page `.paper on a press of this type a single wide web has been employed, such wide web being slit after the printing operation into twosections which are then superposed upon each other and folded in a single product, the adjacent margins of the two web sections are approximately' `an inch and a half or .more in width, whereas there is no necessity for lhaving such margins more than half an inch in width except as the necessity arises as above set forth. inasmuch as the provision of a wide margin at one sideof the paper makes necessary the provision of asimilar margin at the opposite side in order to produce a balanced appearance, it is evident that a considerable width of paper is necessarily .used over and above that necessary from the standpoint of a consideration of thel paper itself independently of the printing process. It

the necessity -for the use of margins an inchormore in width in lieu of margins of a half inch or less. l have found that by the use of my improved construction l can employ two webs or web sections each thirty-three inches wide in lieu of the' two sections thirty-five inches wide which it has been necessary to use heretofore for a balanced product, my construction thus enabling a saving of four inches of paper, being a saving of almost siX per cent. inasmuch as the cost of paper for a newspaper of the character ordinarily employing this type of press runs into thousands of ydollars .per year, it will be appreciated that bythe use of my vinvention suoli saving is of very considerable importance.

lt is another object of my invention to improve presses of .this type in sundry details hereinafter pointed out. The preferred means by which I have accomplished Aniy several objects are illustrated in the drawings and are hereinafter specifically described. T hat which l believe to be new and desire to cover by this application is set forth in the claims.

in the drawings:

Figure l. is a top or plan view, almost wholly diagrammatic, showing my improved construction and arrangement of press;

Fig. 2 is a side view, partly in section, showing my improved press, this iignre being also almost wholly diagrammatic;

Fig. 3 is an enlarged side view of the means for supporting one of the rolls of vpaper for use in the press;

Fig. i is ahorizontal sectional view talren substantially at line at one sideof Vthe parts shown vin Fig. 3:

Fig. 5 is an enlarged detail .illustrating the means for adjusting the Yinfeed tapes; and y Fig. 6 is a view showing the construction of the cross-bars by which the infeed tapes are supported.

Referringl to the several figures of the drawings in which corresponding parts are indicated by the same reference characters,-

15 indicates the ordinary paper roll spindie supporting in position a roll of paper 16 from which extends the web 17. This web is led from the roll 16 over a roller 18, from thence about the'roller 19 of a governor mechanism 20,'and from thence upward about an infeed roller 21. A second paper roll spindle 22 is supported in a frame 23 adjacent to the roll 16, the spindle 22 being adapted to support a paper roll 24. The web 25 from the roll 24 extends over a roller 26, from thence downward about a roller 27 o1 a governor mechanism 28, and from the governor mechanism to the infeed roller 21, guiding rollers 29-3O being interposed between the governor 28 and the infeed roller'21.

As is bestshown in Figs. 3 and 4, 'the governor mechanism 28 comprises diagonally-extending bars 81 at opposite sides of the iframe 23. The roller 2'( is revolubly mounted upon heads 82 provided with rollers 83 which bear upon the diagonallydispo ed bars 31. An arm 34 is pivotally mounted adjacent to the bar 31 at one side of the machine, in the construction shown being mounted on the framework 23, and extending along the bar 81. An arm 35, lixedly connected with the arm 34 and adapted to rock therewith about the axis of the arm 84 relative to the bar 31, is connected by means of a link 36 with a lever 37, which is pivotally mounted on the frame 26 and is provided with a brake-shoe 88 which bears upon a sheave or pulley 89 fixed upon the spindle 22. As will be readily understood, as the tension of the web 25 decreases during the operation of the press, the roller 27 will move downward along the arm 34 serving by its weight to exert a downward pull upon the arm 35, the link 36 and the lever 37, exerting a rictional pressure upon the sheave 89, serving thus to tighten the web 25. As the web 25 in turn increases in tension, the roller 27 is caused to ride up the arm 34 and the bars 31, serving thus to decrease the frictional pressure of the shoe 38 upon the sheave 89 whereby the tension of the web is again decreased. By the provision of means of this type the tension of the web is automatically controlled and kept constantly at approximately the desired value.

As is best shown in dotted lines in Fig.. 1, a plurality oi endless tapes 40 are provided, bearing upon the upper portion of the infeed roller 21, such tapes being spaced substantially at equal intervals lalong such roller. The tapes 40 are supported at their upper ends by a roller 41 revolubly mounted adjacent to the roller 21, being supported at their lower ends by rollers 42 movably mounted in position relative to the roller 4l.

mesma As is best sho-wn in Figs. 5 and 6, the rollers 42 are revolubly mounted upon arms 43 extending substantially horizontal from sleeves 44-45 revolubly mounted upon a cross-bar 46. Each of the sleeves 44-45 isprovided near its outer end portion with an arm 47 which is adjustable relative to the framework by means of a screwthreaded rod 4.8 revolubly mounted in a bearing 49 supported by the trame. is will be readily understood, when the arms 47 are moved to the right in Fig. 5 the endless belts or tape 40 will be tightened upon the il. ce of the in'eed roller 21, whereby the eiiective grip of the roller 21 upon the several webs may be varied.

From theinfeed roller 21 the webs 16 and 25 pass together to the equalizing mechanism 50 which is or' any suitable type and operated by any suitable mechanism (not shown). From the equalizer 50, the webs pass under an impression cylinder 51, thence about rollers 52-58, thence about an impression cylinder 54, again through the equalizer 50 and about an outt'eed roller 55, the outieed roller 55 being provided with suitable endless tapes or belts 56 in contact therewith. The cylinders 51--54 are adapted to be moved. by any suitable mechanism (not shown) along beds 57-58, respectively, the cylinders 51-54 being moved in contact with the beds upon their movement to the right in Fig. 1, and being moved out olf contact therewith in their movement to the left in said ligure. Any suitable inking mechanism is provided in the complete press, but inasmuch as the inking mechanism forms in and of itself no part of my present ii vention it is not believed to be necessary to illustrate or describe such parts herein. lt will be understood that upon a suitable supply ol ink being-spread upon the beds :S7-58, the cylinders 51-54 serve upon their movement to the right in Fig. 2.

to bring the webs into operative printing relationship to the forms in the well-known manner.

is is shown in Fig. l, the bed 58 is provided with forms 59, 60, 61 and 62, the forms 59-60 being separated -from each other and secured in position within a suitable chase 63 and the forms 61--62 being suitably separated roin each other and secured in a chase 64. As is shown in this figure, the forms 60 and 61 are separated from each other by a considerable space, as is made necessary by the adjacent bars of the cases 63-64. 1n order to provide the desired margins .at each side of the web, the paper roll 16 is adjusted laterally of the press into such position that the web 17 extends laterally beyond the edges of the forms 59-60 at equal distances, extending preferably about half an inch at each side. ln like manner the roll 24 is adjusted laterally of the press so as to bring the web-25 into centered p0- sition relative to the forms 61-62 so .as to extend approximately a half inch beyond the forms at each side. By the use of separate webs 17 and 25 in lieu of a single wide web extending from side to side of the press, I am enabled to provide narrow margins at the inner edges of the webs, saving thus apjn'oximately two inches of paper, and a like amount of paper is, the outer edges of the webs. The bed 57 is of course provided with other forms for the printing of the reverse side of the web. Inasmuch as these forms and the chases are similar to those shown in Fig. l upon the bed 58 it is not believed t-o be necessary to illustrate or describe them herein. In Fig. 2 a single form 622L contained in a chase 6l@ is shown in position.

From the outfeed roller the webs are led to and about angle-bars 65--66 of any suitable type by which such webs are superposed upon each other to run laterally of the press to the rollers 67-68 and the former 69 by which the webs are given a longitudinal fold with the web 25 folded on the outside, as will be understood by reason of the arrangement of the angle-bars (S5- 66. It will also be understood that if desired a roll of just half the length of the roll 2l might be used if desired, so that the printed product would comprise six pages rather than eight. It will also be understood that if desired a seventy inch roll can stilLbe used in lieu of the thirty-three inch roll 16, a suitable slitter being provided for dividing the wide web into two narrow webs to be superposed upon each other. It will be understood that the angle-bars and the cooperating rollers by which the webs are conducted from the outfeed roller 55 to the former 69 are all mounted adjustably in position in any approved manner so as to be movable as desired for a proper handling of the webs.

So far as I am aware, I am the rst in the art to provide, in a flat bed web-perfecting Copies of this patent may be obtained for of course, saved at press, a plurality of roll supports together with a governor for each roll, the webs from the several rolls being fed to and through the same infeed mechanism and being controlled by a single equalizer, and my claims are to be construed accordingly.

vWhat I claim as my invention and desire to secure by Letters Patent, is

l. In a flat-bed web-perfecting printing press, the combination of means for supporting a plurality of web rolls, a single infeed roller in contact with which the webs from said rolls pass side by side, adjustable means for pressing one of said webs against the infeed roller7 independently adjustable means for pressing the other of said webs against the infeed roller, and means for printing said webs as they advance through the press.

2. In a flat-bed web-perfecting printing press, the combination of means for supporting a plurality of web rolls, a single infeed roller in contact with which the webs from said rolls pass side by side, adjustable means cooperating with said infeed roller for advancing one of said webs, other adjustable means coperating with said infeed roller for advancing the other of said webs, the web-advancing means for each web being adjustable independently of the web-advancing means for the other web, and means for printing said webs as they advance through the press.

3. In a flat bed web-perfecting printing press, the combination of a plurality of supports each adapted to carry a web roll, a governor for each roll for controlling the tension of the web unwound therefrom, a single infeed roller to which the webs pass from the several governors, separate means for each web each adapted to be adjusted independently of the other for pressing the web into contact with the infeed roller, and printing mechanism for perfecting said webs.

PAUL F. COX.

ve cents each, by addressing the Commissioner of Patents,

Washington, '.D. C.

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