US1269794A - Printing-press. - Google Patents

Description

C. DAUSIVIANN.

PRINTING PRESS.

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C DAUSIVIANN.

PRINTING PRESS.

APPLlcAloN FILED MAY 19. 19m.

Patented .11u16 18, 1918.

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PRINTING PRESS.

APPLICATION rlLED MAY x9, 1916.

Pzrened June 18, 1918.

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PRINTING PRESS.

APPLlcATloN FILED www. :916.

`1%;WQ@ Patened Jun@ 18, 19M.

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C. DAUSIVIANN.

PRINTING PRESS.

APPLICATION FILED MAY I9, IsIa.

I; PAIAIIIAI June 18 1918.

5 SHEETS-SHEET 5.

Il HIIIIII'I 'I *UH-ARLES DAUSMANIF, F BROOKLYN, 'NEW YOIi't PRINTING-PRESS.

Specification of Letters Patent.

Patented l une le, llltiln.

lltppllzzation tiled May 19, 1916. Serial No. 93,601.

To all whom t may concern.'

Be it known that l, CHARLES DAUSMANN, a citizen of the United States, residing at Brooklyn, in the county of Queens and State of New York, have invented new and useful improvements in Printing-Presses, of which the following is a specification. y

rllhis invention relates to printing presses of the rotary type, and particularly to photogravure presses employing one or more printing couples, each consisting of a printing roll having an etched intaglio printing surface and a cooperating yielding impression roll,between which rolls the sheet or web of paper feeds to receive the `impression in the printing action.

The primary object of the present invention is to provide a rotary printing press of the character described wherein couples are arranged and combined in a novel manner for the printing of one side of the sheet by one printing vcouple and the printing of the reverse side of the sheet by another printing couple without twisting or distorting the paper, or in any way causing undue strains or tensions upon the paper liable to interfere with perfect and complete lprinting actions successively on opposite sides of the paper and while it is in a continuous and constant courseof transit.

A further object of the invention is to provide a printing press embod ing a novel o rganization ofparts wheregy any desired number of printing couples may be arranged in proper relative order for the continuous feeding of the web of paper for printing the same successively on one or both sides thereof in any desired number of colors. i

A still further to provide novel and improved means for adjusting the elements of the press mechanism to feed the in the paper feed and printing operations,

and to regulate the degree 4of impression j for. adjustin and tension upon the moving we of paper as varying circumstances may require.

A still further object of the invention is to provide improved means for wiping or removing excess ink from the printing roll,

the ink font of each printing. couple wlth relation to the printing roll,

printing object of the invention is paper in a proper line, to i 4secure an exact registratlon or calibrationI for adjusting the printing roll itself longitudinally and circumferentially as required, for regulating the pressure of the doctor blade upon the printing roll, for regulating the pressure of the impression roll and mov-V ing the same into and out of operative position, for adjusting the paper roll and controlling the speed of rotation thereof, for guiding the moving web of paper to secure the stated printed action, and to drive the printing couples in accord with each other and at a regulated rate`of speed.A

' With these and other objects in view the invention consists of the features of construction, combination and arrangement of parts hereinafter fully descril'oedv and claimed, reference being had to the accompanying drawings in which:-

Figure l is a top plan view .of a rotary printing pressl constructed in accordance with my invention.

Fig. 2 is a front side elevation of the same with parts appearing in section taken on the line 2 2 of Fig. 1.

lill

Fig. 3 is a view in elevation looking to'- A of the parts of roll and parts associated therewith.

Fig. 8 is a detail section on the line l8---8 of Fig. 7.

Fig. 9 is a vertical longitudinal section through one of the printing rolls and associated parts.

ln theaccompanying drawings, l have shown the application ofthe invention to a pair of printing devices or printing couples', 1 and 2, respectively, and which, for purposes of example, may be termed primary and secondary printing devices or couples, which are designed to respectively print the opposite sides of the traveling web or sheet of paper or other material 3. lt 1s to be llllll understood, however, that these two printof the web in the same or did'erent colors,

or for printing opposite sides of the web in the same or di'erent colors, and that in conjunction therewith other sets of printing couples may be employed for action upon the continuously traveling web to print one or both sides thereof in any desired number of colors.

As shown, each printing device or couple 1 vand 2 comprises a suitable frame structure 4, preferably consisting of suitable side plates or standards properly connected and carried by a substantial base 5. Uprights 6 rise from the respective frame structures 4 and are connected by longitudinal beams or girders 7 to form an overhead or superstructure connecting the printing devices or couples and serving to support certain working parts and to serve as a guide frame for the proper guidance of the traveling web 3, as hereinafter fully described.

Each printing couple, in addition to its frame structure 4, includes a rotary printing roll 8 and a rotary impression roll 9. The printing roll 8 consists of a drum or cylinder of copper or other suitable material mounted upon a shaft or axis 10 and having an etched intaglio printing surface. Each impression roll 9 consists of a drum or cylinder of rubber or other suitable resilient or elastic material mounted upon a shaft or 'axis 11 and operating to yieldingly back the moving web of paper for a soft impression action, as is common in presses of the general character described.

The ink supplied to the printing roll 8 is contained in a font or receptacle 12 in vwhich the lower portion of said roll revolves, and this font is mounted upon a supporting bed or carriage 13 resting upon sliding blocks 14 arranged to travel in guideways 15 on the sides of the frame 4. The said box 14 rests upon adjusting cams 16 fixed to a transverse shaft 17 journaled on the frame and provided at one end with a hand wheel 18, whereby the cams may be simultaneously turned to raise or lower the blocks and correspondingly raise or lower the font to adjust the same with relation to the printing roll as required. The excess ink supplied to the printing surface of the roll 8 is removed therefrom by means of a horizontal transversely extending wiper or doctor blade 19 carried by a support mounted on a rock shaft 20 having at each end a pressure regulating varm or lever 21 projecting therefrom. This lever is provided with a series of notches or recesses 22 to receive a stirrup or loop 23 upon one end of a chain, wire or other flexible draft connection 24, the wires or draft connections of the respective arms 21 passing over grooved pulleys 25 on the overhead frame or superstructure and carrying at their free ends weights 26 which act to counterbalance the weight of the arms 21 and to pull upwardly thereon to regulate the pressure of the doctor blade on the printing roll, it being evident that by engaging the stir-- rups with different notches or recesses in the arms the working pressure of the blade may be increased or diminished at will.

The shaft 10 of the printing roll 8 is ournaled to rotate and also to slide longitudinally in bearing openings 27 in the sides of the frame 4, and one end of this shaft is annularly grooved, as indicated at 28, and receives a thrust bracket 29 slidably engaging guide members 30 on the frame and formed with a nut 31 to travel upon a threaded adjusting shaft 32 providedA with a hand wheel 33, whereby the thrust bracket may be adjusted in opposite directions to slide the shaft 10 longitudinally in its bearings, by means of which the cylinder 8 may be adjusted on a line parallel with its axis transversely of the frame for properly disposing or registering the margins of the web 3 with the relation to the margins or other portions of the printing surface. The other end of the shaft 10 is reduced to loosely receive a spur gear 34 and a clutch disk or member 35 which is also loose on the shaft but fixed to the gear by pins 36. This disk is provided with bearings 37 for a worm 38 which engages the teeth of a worm gear 39 suitably fixed or clamped to the shaft, as by means of a nut 40, the shaft of the worm 39 having an angular end 41 for the reception of a crank handle or the like whereby said worm may be turned to turn the shaft 10 either forwardly or rearwardly Without turning the gear 34, so that the printinoroll 8 may be circumferentially adjusted or a registering action.

Onthe shaft 10 is also a pinion 42 meshing with the gear toothed portion 43 of a cam gear member 44 mounted to revolve upon a stub shaft or axis 45 arranged below and in rear of the shaft 10. This cam gear is provided with a cam groove 46 to receive a friction roller 47 upon an arm 48 xed to the rod or shaft 20 of the wiper or doctor blade support. This shaft 20 is fitted to slide longitudinally in bearings on the frame 4 and is adapted through the action of the grooved cam to slide or reciprocate the doctor blade across the face of the roll 8, by means of which all of the exce ink on the face of the roll will be subjected to a longitudinal or lateral as well as a circumferential scraping action, thus insuringthe removal of any of the particles of ink which may tend to cling to the surface of the printing cylinder. The outward movement of the lever or arm 48 may be limited by the stop pin or member 49, whereby, displacement of the cam roller will be prevented. It will be understood from the foregoing description that the doctor blade support is mounted to turn upon the shaft 2() so that the pressure of the blade on the printing roll ently of and without lill incarna will be automaticall regulated independinterference from the blade reciprocating mechanism.

rllhe shaft ll of the yielding compression roll 9 is journaled to revolve in bearing blocks' 49 which are tted to slide vertically in slots 50 formed in the frame sides, which slots are closed at their upper ends by a cap 5l, provided with openings' to slidably re,L ceive the lower reduced portions :of bearing blocks 52, the upper portions of which normall ing locks 49 are swiveled to the lower ends of adjusting screws 53 which pass through and work in threaded openings in the blocks 52 and carry at their upper ends hand wheels 54, whereby the blocks 49 may be vertically adjusted to independently adjust the impression roll 9 with relation to vthe 4printing roll 8 to vary the printing pressure as required. yllhe blocks 52 carry pins or studs 55 engaging arcuate slots 56 in impression roller lifting cam plates 57 carried by a transverse roclr shaft 58 journaled on the frame, said rock shaft being provided with a hand lever 59 whereby it may be operated to raise or lower the blocks 52 together with the blocks 49 to bodily move the impression roll into and out of engagement with the printing roll, to permit threading of the paper between the rolls 'or cleaning or other work upon the respective rolls, as will be readily understood.

The gear 34 on the shaft l0 of the printing roll meshes with the spur teeth of a combined spur and beveled gear 60 carried by a stub shaft 6l journaled upon the rear standard of the frame, whereby the said printing roll is driven through its clutch connection previously described, and the gear 34 in turn meshes with a pinion 62 on the adjacent end of the shaft ll whereby .the impression roll 9 is driven. '.lhe beveled teeth of the transmission gear 60 mesh with the beveled pinion 63 on the adjacent end of a longitudinally extending drive shaft 64 driven from an electric or other suitable motor 65, the gearing connections between the shaft 64 and the transmission gears 69 of the printing couples l and 2 being the same so as to drive said printing couples at the same rate of speed but in opposite directions for successive printing actions upon the opposite sides of the web 3, as will be readily understood, exact synchronism of action between the printing devices or couples being thereby obtained.

ylllhe web 3 of the material to be printed, and which is commonly paper, is mounted in the form of a roll in the usualmanner upon a stock carrying shaft or roll 66 arranged transversely of the the shafts of the printing rolls at a point between the/printing couples.- The web 3 feeds from this shaft or roll, as indicated in 'structure back over the roll a rest upon said cap pieces. The bearpress in parallelism with dotted lines in Fig. 2, first over a guide and tension roll a on the superstructure 7, thence downwardl between the printing and impression ro ls 8 and 9 of the printing couple 1, thence upwardly around a guide roll a at the adjacent end of the superstructure 7, thence along the underside of said superand over similar guide and tension rolls a2 and a3 and over a guide roll at at the opposite end of the superstructure, then backwardly under said roll at and over the roll a3 and downwardly between the printing and impression rollers 8 and 9 of the printing couple 2, then upwardly over a guide roller a5 at the adjacent end of the superstructure and backwardly toward the first-named end of the frame over a series of guide rolls a5, then upwardly again overa guide roll a6, and finally upwardly and forwardly toward the second-named end of the frame over a series of guide and tension rollers a7, from which the free end 3 of the web 3 may pass to foldin and cutting mechanismsor to other sets 0% printing actions according tothe number of diderent impressions to be made or colors to be printed. lt will thus be seen that the web will first pass through the printing couple and be printed upon one side thereof, and will then extend in the form horizontal traveling stretch to the printing couple 2'at the opposite end of the frame, whereby its opposite side or face will be printed, the first-named face of the web being meanwhile dried in its course of travel, the web then extending backward in the form of a second or intermediate stretch and finally forward again in the form of an upper stretch, whereby lit is conveyed through a back-and-forth course of travel to secure a drying action, whereby the printed web is placed in proper condition to be folded and cut or to receive other printing time for drying actions. 'llhe guiding a-nd tensioning rolls above described are adapted for adjustment longitudinally of the press in any suitable manner to properly position them for a desired guiding and tensioning action on the moving web to maintain the web properly taut without imposing any undue amount of strain or tension thereon. llt will be observed that the described mode of directing the web through its course of travel between printing couples provides for the continuous and uninterrupted printing of the opposite sides of the web while such web is traveling at a regulated rate of speed in a smooth and even manner, and without the necessity of twisting or otherwise distorting or bending or folding the sheet upon itself, thus overcoming objectionable strains and tensions upon the paper and simplifying and reducing the number of operating parts. 'llhe web roll 66 is journaled in bearing its impressions without any material loss of lll9 members 67 having hinged caps 68 adapted to be secured in closed position by fastenings 69, thus permitting of the convenient removal of the roll shaft and the application of a new roll whenever required. @ne end of the shaft has a grooved collar 70 receiving a shifting fork 71 carrying a threaded sleeve or nut 7 2 arranged to travel upon an actuating screw shaft 7 3 journaled upon the adjacent bearing standard and provided with a hand wheel 74. By'the use of this adjusting means the roll may be moved endwise transversely of the press to laterally adjust the web paper for a proper printing or registering action. 0n the roll shaft is also a collar 7 5 serving as a-friction brake vsurface which is engaged by a U-shaped friction brake shoe 76 carried by a bar or plate 77 adjustable in guide members 7 8 on theadjacent bearing standard by means of a screw shaft 79, whereby the brake shoemay be adjusted to bear with greater or less friction on the brake ,collar to oppose a desired resistance to the rotation of the drum and the feeding action of the paper therefrom. Hence the drum may be prevented from turning vtoo rapidly and the feed ofthe paper therefrom controlled with accuracy and certainty, as will be readily understood.

Fromthe foregoing description, taken in connection with the drawings, the construction and mode of operation of my improved photogravure printing press will be readily understood and it will be. seen that the invention provides a press of `this character which embodies the desirable advantages sought and is adapted to operate in a 4thoroughly reliable and ecient manner. While the Structural features disclosed. are preferred, it will, of course, be understood that naearec ychanges in the form, construction and arrangement of parts within the scope of the appended claims may be made without departing from the spirit or sacricing any of the advantages of the invention.

I claim 1. In a rinting apparatus of the character -descri ed, and in combination with a printing roll, and an impression roll, vertically adjustable bearings for the shaft of the impression roll, a plurality of vertically movable supports, a screw shaft in threaded engagement with each support and engaging the adjacent adjustable bearing, a rock. shaft, studs upon the adjustable supports, slotted cams upon the rock shaft engaging said studs, whereb the supports and bearings may be raise and lowered, and means carried by the rock shaft for adjusting the same. I

2. In a printing apparatus of the characn ter described, and in combination with a printing roll, and an impression roll, vertically adjustable bearings for the shaft of the impression roll, a plurality of vertically movable supports, a screw shaft in threaded engagement with each support and engaging the adjacent adjustable bearing, a roclr shaft, studs upon the adjustable supports, slotted cams upon the rock shaft engaging said studs, whereby the supports and bearings ma be raised and lowered, and means carried y the rock shaft for adjusting the same, a second impression roll mounts for vertical adjustment, a printing roll coperating therewithI and means for guiding a web around said second impression roll in position for printing on the reverse side of the web. y

.lln testimony whereof li aiin my signature.

CHARLES DAUSMANN.

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