US457186A - Printing-press - Google Patents

Description

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D. LBOKBRSON.

PRINTING PRESS.

No. 457,186. Patented Aug. 4, 1891.

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' D. I. EGKERSON.

PRINTING PRESS.

Patented Aug. 4, 1891.

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Patented Aug. 4, 1891.

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DAVID I. ECKERSON, OF WORCESTER, NEW YORK.

PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 457,186, dated August 4, 1891.

Application filed July 3, 1889- Serial No. 316,407. (No model.)

To all whom it may concern..-

Be it known thatLDAvID I. EOKERSON, a citizen of the United States, residing at VVorcester,in the county ofOtsego and State of New York, have invented certain new and useful Improvements in Printing-Presses; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention (for which British patent numbered 814 of 1890 has been granted) relates to printing-presses of the class adapted to print on rolls of continuous paper, and is an improvement on a press for which Letters Patent of the United States No. 387,500 were granted to me on the 7th day of August, 1888.

The invention has for its object certain im provements in the feed and inking mechan ism of a perfecting platen-press, as will be hereinafter described, pointed out in the ap-' pended claims, and illustrated in the accompanying drawings.

In the accompanying drawings, in which similar reference-letters in the several views designate corresponding parts, Figure 1 rep{ sents a view of a printing-press embodyingv the invention as seen from the driving side. Fig. 2 represents a vertical longitudinal sec tion thereof. Fig. 3 represents detail side and sectional views of the tension device for the. paper. Fig. 4 represents a vertical transverse section of the machine on the line 1) o of Fig.1 1, certain parts of the mechanism being omitted for the sake of clearness. Fig. 5 repreanism being omitted.

carriages and attachments. Fig. 8 repre sents detail views of the ratchet and loose pinion on the shaft that operates the intermit-' tent feed-rollers. Figs. 9 and 9 represent plan views of one of the type-beds and the combined outer and inner frames.

Fig. 10% represents a plan view of the machine, certain parts being removed. Fig. 11 represents the type-bed standard and attached cams. Fig. 12 represents a side view thereof. Fig. 13 represents a central vertical longitudinal section of the same. View of the mechanism that actuates and regulates the continuous-feed rollers. "Fig. 15 represents a plan view of the type-bed standard detached. Fig. 16 represents a detail longitudinal sectional View of the inkdistributing mechanism. Fig. 17 represents a plan view of a portion of the same. Fig.18 represents a side view of a portion of the knife-actuating mechanism. Fig. 19 representsa vertical longitudinal section thereof. Fig. 20 represents a vertical transverse section at right angles to Fig. 18. Fig. 21 represents a plan view of a portion of the mechanism shown in Fig. 18. Figs. 22, 23, 24, and 25 are detail views of portions of the ink-distributing mechanism. Fig. 26 represents a plan view of a portion of the rear or delivery end of the machine.

The present application has many points in common with an application for a patent for printing-press of the same date of filing herewith, the main difference being that the latter application is for a press that prints on one side only of the roll of paper, whereas the present application is for a press that will print on both sides of the roll while passing through the machine.

Other points of difference will be pointed out and claimed in the present application.

Referring to the drawings by letter, A designates the main frame of the press of general rectangular shape and generally similar to that in the patent referred to, the frame in this case, however, being constructed to accommodate two type-beds, the corresponding platens, and necessarilytwo inner frames B for the said type-beds, which frames are similarly constructed to that in said patent.

In the present application the transverse driving-shaft O is journaled in bearings situated centrally in the sides of the main frame and has mounted upon it a suitable drivingpulley, Fig. 1, and on one side of the main frame a pinion c, that meshes on opposite sides with the large gear-wheels D and E, mounted, respectively, on the transverse shafts (Z and e. I

Fig. 14 represents a side F F are two similar platens secured by vertical adjusting screw-rods to the main frame and having, preferably, detachable impression-pldtes, and f f are the corresponding type-beds moving in the inner frames B and. bolted to the depending standards f f, each having an upper reversed conical portion, a lower cylindrical portion, and a depending guide-stem, which moves in a guide-opening in a cross-bar of the main frame. The said standards are preferably made in two longitudinal equal sections bolted together, Fig. 11, for the more easy insertion of the parts that stand therein, and the axes of the standards are aligned vertically with the shafts d and e, respectively, which shafts passthrough longitudinal slots in the corresponding standards. Each standard is provided with a longitudinal slot at right angles to that through which the corresponding shaft passes, and

upon said shaft and within said slotis mounted a cam-disk that bears upward on an anti-friction roller mounted within the standard and raises the said standard and attached typebed. On the said shaft, on each side of the standard, is mounted a cam-disk that bears downward on an anti-friction roller j on rnaled upon the standards and depresses the latter. The described construction is fully shown 1n Figs. 11, 12, and 13. Each type-bed has at its corners depending rods which pass through perforations in lugs on the main frame, and around said rods between the lugs and type-bed are coiled springs strong enough to support the corresponding type-bed and standard and lessen the labor of the attached cams.

The operative mechanism of the inkingrollers is constructed as folllows: G G are inking-tables on each side of each type-bed, and g g are inking-rollers mounted in a suitable manner in bearings on the carriage g, each of which is provided with a central depending lug g perforated near its end. The said carriages are provided with the wheels g 93, arranged in pairs, the members of which turn, respectively, upon the upper and lower surfaces of the flangeways g on the main frame. g g are horizontal longitudinal rods having their ends pivoted to the perforated ends of the depending lugs 9 of the two inking-carriages on each side, so that said carriages will move together. H H are opposite vibrating levers journaled at theirlower ends on a transverse bar of the main frame and with their upper end .attached by pivoted link-rods N N to the corresponding horizontal rods 9 N is a pitman that connects one of the levers H to a gear-wheel N that meshes with a gear-wheel d on the shaft d within the main frame. The said wheel (1 by. its rotation causes the pitman N to vibrate the levers H, and consequently reciprocate the typecarriage over the flangeways described.

The ink-distributing mechanism is constructed as follows: There are-four inking- .tables G, one on each side of each type-bed,

. rod.

and below each table is journaled in the main frame'a transverse inking-cylinder I and other smallerinking-cylinders,whichin] pingethereon and are rotated thereby. Each cylinder I has on its shaft at one side a sprocket-wheel i, and its circumference protrudes through a transverse slot in the corresponding table. i is a distributing-cylinderabouthalf as long as the corresponding cylinder I and mounted on a shaft with its surface touching one of the smaller inking-cylinders, but not the cylinder I. The shaft i is provided with the oppositely-inclined communicating threadgrooves 2',- Fig. 17, by means of which and a swivelcd pin or block on the'cylinder 2' (see Fig. 25, end view) the latter is caused to re ciproeate on the shaft 11 when it is rotated. The cylinders I are rotated by a chain which passes over the sprocket-wheels t', mounted at suitable points on the main frame, and a sprocket-wheel 1' mounted on the shaft 6, so that they receive motion from the latter. (See Fig. 2 in dotted lines.) Below each cylinder I is an ink well or receptacle J, having an inclined floor and a metal plate secured to said floor, with'its free lower edge adjustable up and down by means of screws passing through said floor. In contact with said edge is a cylinder j, having a ratchet-wheel on its shaft,

which ratchet-wheel is engaged by a pawl: that is pivoted on an arm 7", that swings from the main frame. The ends of all the arms j'- four'in number-are connected bya horizontal rodj to which the lower end of the swinging lever 3' is also loosely attached. The said lever is pivoted about centrally upon the main frame, and its upper end is attached loosely to a horizontal rodj, that is supported in bearings on the main frame. K is a cylinder between the transfer-cylinders l andj, mounted on the upper arms of aswinging frame K,

upon which is mounted an anti-friction roller, the frame being pivoted at its angle on the main frame. Upon the rod 3' are mounted the adjustable sleeves k, which make contact with the said anti-friction roller and swing the respective frames K so that the cylinder K will alternately make contact with the corresponding cylinder j and I and will carry ink from the former to the latter. 7' is reciprocated by a lever which is connected to it at the upper end by a sleeve and pivotaljoint, Fig. 16, and is pivoted to the main frame below said upper end, and has a longitudinal slot in its lower end to receive a pin on the pitman N, so that said pitman will swing the lever and reciprocate the said ing rod 3", the lever 7' and arms j, cause the .pawls and ratchet-wheels to rotate the cylindersj, which thereupon feed from the inkwells.

The mechanism for feeding the paper is as follows: L is the paper roll wrapped on a shaft mounted in bearings secured to the main frame. The strip of paper orweb feeds from the roll between the continuous-feed The rod j by means of the reciprocat- The rod strip of paper or web passes between the front cured to the main frame above the roll L, an d groove in its hub or base.

rollersZZ, which are constructed as follows: I The rollers Z Z are journaled in bearings seupon the shaft of one of said rollers is abevelgear Z, which meshes with a bevel-gear Z on a shaft Z that is supported in bearings secured to the main frame and has splined upon it a friction-roller Z havinga circumferential The said frictionroller bears against the'friction-wheel Z on the shaftd and is rotated thereby, the spring Z which is secured to the main frame, bearing against the shaft Z and keeping the friction-roller and friction-wheel in contact.

The position of the friction-roller nearer to or farther from the center of the frictionwheels causes the feed of the rollers Z to be faster or slower, and the said position isv adjusted by the following means: I is a horizontal screw-rod supported in bearings on the main frame, with its end bent down and bifurcatcd to rest in the groove in the hub of the friction roller, and Z is a nut on the threaded part of said rod, which nut is prevented from traveling on the rod by a detent Z secured to the main frame, with its free end entering a circumferential groove in the hub of said nut, so that the rod is compelled to travel through the nut when the latter is turned, and thus adjust the position of the the friction-roller. (See Fig. 14:.) After the strip of paper or web has passed the continuous feed rollers it descends in a loop and passes to the inner side of the shaft cl and the corresponding platen F and type-bed f, and thence ascends over a suitable directin g-roller Z to atension device M, composed of the two tension-rollers m m, the lower one of which is journaled in bearings m, Fig. 3, secured to standards rising from the main frame. The tension-rollers are connected by end straps m m in which both have bearings, in which they may be bound by the set-screw m m to retard or prevent their rotation, if necessary or desirable. From the tension device the platen F and type-bed f to the lower roller 71. of the front intermittent feed-rollers n a, respectively, passing around the said lower roller and thence between the latter and the upper roller or rollers n, which are preferably arranged in sets, their'common shaft resting in adjustable bearings in standards rising from the main frame, while the lower rollers are single and have fixed bearings in said standards. From the front rollers n n the strip of paper passes over the directing-roller n, journaled in standards rising from the main frame, Fig. 2, and thence downward between the platen F and type-bed f, its unprinted side being then downward and facing the type-bed f. The paper strip beyond the platen F passes between the rear intermittent rollers O 0, similarly arranged and of similar construction to the front intermittent rollers. From the said rollers the paper strip passes to the severing end delivering mechanism, hereinafter described. The lower intermittent rollers have on one end of their shafts bevel gear-wheels 0', for a. purpose hereinafter described, and on their other ends gear-wheels that mesh wit-h similar wheels on the shaft that carries the upperintermittent rollers and cause the latter to rorate.

The mechanism that actuates the intermittent rollers is oonstructed as follows: P is a longitudinal shaft journaled in standards rising from the main frame and provided with bevel gear-wheels 19, that intermesh with the similar wheels 0 on the shafts of the lower intermittent rollers. Upon the shaftPis a loose pinion 19, having secured to: it a cylindrical shell 19 provided with a pivoted pawl 19 Fig. 8, arranged to engage a ratchet-wh eel 19 secured by a set-screw upon the shaft P, Fig. 8, so that the rotation of the pinionp' will turn the shaft in one direction only, and while the pinion is turning in the opposite direction the shaft P and intermittent rollers are at rest. The pinion p meshes with a straight rack 19 of Fig. 1, that reciprocates between guides secured to the side of the main frame, and has pivoted to its lower end a pitman 10 the lower end of which has secured upon it a swiveled block that rests and is adjustable in'a groove in a radial guide-strip 19 secured to a disk 19 on the end of the shaft d, so that the rotation of said shaft will by means of said pitman reciprocate the rack p and will consequently move the pinion p alternately in opposite directions, and will thereby actuate the shaft P and intermittent gearing, as described;

The knife or severing mechanism is constructed as follows: Q, Fig. 1, is a cam-wheel on the shaft 6, provided in one side with an eccentric cam-groove q, and g is a lever pivoted at outer end, Fig. 1, on the main frame and having a pin or anti-friction roller on its inner end to enter said groove and vibrate the lever g as the cam rotates. At a proper point on said lever is pivoted the lower end of a link or rod R, the upper end of which is pivoted to the outstanding arm of a crank r of a horizontal shaft 1*, journaled in bearings on the standards of a frame rising from the main frame near the rear end thereof. The shaft 7' has on its opposite end a bevel gear wheel 0"", that meshes with a similar bevel gear-wheel on the adjacent end of a transverse horizontal shaft S, journaled in bearings on the standard of the frame rising from the main frame and carrying on its opposite end a segmental gear 8, (see Figs. 18, 19, 20, and 21,) that meshes with a straight vertical rack t, secured to a knife-blade T, which reciprocates between vertical guidestrips secured to said standards and severs lengths from the strip of paper when it descends thereon. Thus the cam and link or rod R actuates the knife by the described in- IIO tervening mechanism to sever equal lengths from the paper strips at equal intervals of time and during the periods'of'rest of the intermittent rollers.

Having described my invention, I claim 1. In a printing-press, the combination, with the two platens and corresponding verticallyreciprocating type-beds, of the continuousfeed rollers ll, the directing feed roller Z receiving the strip of web from said rollers Z, the tension device M, receiving the web from the directing-roller Z from which tension device the web passes between the front platen and type-bed and around the lower roller of the front set of intermittent feed-rollers n n, which draw the web from the tension device between the front platen and type-bed, the directing-roller it between the front and rear platens and type-beds, and therear set of in termittent rollers O o,drawing the web from the directing-roller it" between the rear platen and type-bed, substantially as specified.

2. In a printing-press, the combination,with the inking-rollers, the carriages bearing said rollers, and the rods 9, connecting the carriages on each side of the main frame, of the vibrating levers H, the link-rods N, connecting said levers to the rods g, the gear-wheel N rotated by a gear-wheel on the shafit d,

and the pitman N; connecting said gear-wheel and the lever H on the same side of the main frame, substantially as specified.

In a printing-press, the combination of the inkwvells, the rollers j, intermittently rotated therein,th'e swinging frames,the transfer-rolls j ournaled in the said frames, the arms j, the pawland-ratchet connection between the said arms and the rollers j, the rod j ex- DAVID L ECKERSON.

Witnesses:

CHAS. A. JUDD.

THoMAs A. EVERS.

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