US880279A - Bed-controlled web-feeding mechanism - Google Patents

Description

P. F. 00X.

PATENTED FEB,- 25, 1908.

BED CONTROLLED WEB FEEDING MECHANISM.

APPLICATION FILED 00124. 1907.

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P. P. cox. 1 BED CONTROL-LED WEB FEEDING MECHANISM.

APPLICATION FILED 00124. 1907.

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UNITED STATES PATENT onnron.

PAUL FLEMMING COX, OF JACKSON, MICHIGAN, ASSIGNOR TO THE JACKSON PRINTING PRESS COMPANY, OF JACKSON, MICHIGAN, A CORPORATION OF MICHIGAN.

Specification of Letters Patent.

Patented Feb. 25, 1908.

Application filed October 4. 1907. Serial No. 395,943.

To all whom it may concern:

Be it known that 1, PAUL FLEMMING Cox,

. of Jackson, in the county of Jackson and may be fed,

State of Michigan, have invented certain new and useful Improvements in Bed-Controlled ob-Feeding Mechanism; and I here by 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.

This invention is an improvement in web handling mechanism, particularly designed for use in movable web printing presses and its object is to provide means whereby a web may be fed at a variable speed exactly proportionate to the movement of a reciprocating crank-actuated bed during the printing operation, and by which additional web if desired, between printing operations.

The invention is particularly adapted and designed for use in connection with movablebed web-printing presses, such as shown in my Patent No. 847,912, of March 19, 1907, in which a length of web is fed between the beds and cylinders at a speed corresponding with the variable linear movement of the bed during the taking of impressions, and thereafter while the impression is thrown off a like amount of web is fed between the beds and cylinders. The invention is however applicable to other web handling machines wherein it is desired to feed a web regularly but with a variable movement.

An object of the present invention is to operate the ordinary web feed-roll of such press at a continuous but variable speed so as to properly handle the web through the press without the necessity for employing any compensating rollers, or looping rollers, for the web between the feed and the delivery, such as are set forth in said patent.

In the accompanying drawings I have illustrated a single press, corresponding practically to one half of the perfecting press shown in my aforesaid patent,to which my improved feeding devices are applied. This will suffice, with the accompanying description, to impart a clear understanding of the invention, and I refer to the claims for summaries of parts and combination of parts for which protection is desired.

In said drawings F1gure 1 is a diagrammatical elevation partly in section of a printing press with my improved web feeding mechanism applied thereto. Fig. 2 is a similar view; and Fig. 3 is an enlarged detail view showing the different positions as sumed by the web feeding mechanism during the cycle of operations thereof.

On a main frame A, of any suitable construction, is mounted a reciprocating type bed B, which may be operated by pitman E, connected with depending brackets d on the bed, and to a crank gear G, which may be driven by a pinion h, on the main driving shaft H, as indicated in the drawing. Above the bed B, in the example shown, are arranged two cylinders I, I, as. in my aforesaid patent, which cylinders may be mounted in eccentric boxes X, which are pivotally connected to a bar W attached at one end to a lever V, pivoted at c, on the frame, and having a roller 8, on its lower end engaging a race cam S, formed on or attached to the gear G, or shaft thereof, as indicated in the drawings.

N is the web in-feed roll with which co-act tapes Q, running over rollers q, q, journaled in the frame beside the roll N.

P is the delivery roll with which co-act tapes R, running over rollers r, r. The roll P may be driven from the roll N, by means of a train of gears 19, as indicated in the drawings, so that the delivery roller P will have the same peripheral movement as the in-feed roll N.

The Web M, may be led in from a roll J, at one end of the machine, over a guide roller m, then between roll N, and tapes Q, up over guide O, thenbetween cylinder I, and bed B, over a guide 0, then between cylinder I, and bed B, thence over guide 0 and then back to and between roller P and tapes R, and thence to the delivery.

The feed roll N is driven at a peripheral speed exactly uniform with the movement of the bed B during the taking of an impression, by the following devices :Attached to bed B is a rack cl which meshes, during the print ing operations, on the printing stroke of thebed, with a segmental gear 6, fixed on the shaft of roll N. The pitch line of segment 6 coincides with the circumferential line of roll N, therefore the periphery of roll N will move at a speed exactly equal to the speed of travel of bed B, during the printing operations, and therefore at such time the web M will be fed between the cylinders and bed in exact unison with the movement of the bed. At the end of an impression the roll N is taken control of by an auxiliary driving means and caused to complete its rotation while the rack b and segment 0 are out of mesh; during which time the bed moves back on its non-printing stroke and the impression is thrown off, as by the cylinders I, I, being raised above the plane of the type.

The auxiliary mechanism for operating roll N, during the return stroke of the bed, com prises a segmental gear 0, whose pitch diameter is considerably greater than that of segment e,and which is adapted to mesh with a pinion a mounted on a stud a attached to the frame and meshing with a'pinion 3 on the shaft of crank gear G, by which pinion a is rotated once for every rotation of the crank gearing.

The feed roll N is driven by the pinion a, and the segmental gear 0 attached to roll N during the time the impression cylinder is off impression, and is driven by the rack d and segmental gear 6 also attached to roll N, when the type is passing under the impression cylinders and the latter on impression.

In Fig. 1 the crank is shown on the back dead center and the pinion a is then engaged with the segmental gear 0.

Fig. 2 shows the crank in the position assumed at the instant when both the gear 0 and rack d are moving at the same velocity; 6 at a uniform and d at an accelerating velocity. The gear 6 is about to engage with rack 01 and the gear 0 about to disengage with gear (1. Some of the end teeth of the gear a are partly cut away to allow it to come certainly into mesh with the rack (Z. The big teethf and. g on pinion a and segment a, are of such shape when in contact that they accelerate the speed of gear 6 at the same rate as the rack d, until the teeth of gear 6 and rack d are securely in mesh. During the time gear 6 and rack 01 are engaged the periphery of roll N and the type on bed B have the same velocity and the paper is fed to the press at the proper speed.

Fig. 3 shows the crank in the position assumed at the instant that the rackd and gear (2, also the gears c and a have the same velocity. It is obvious that the rack 11 will decrease in velocity and that the roll N may move at a uniform velocity from this point on. The big teeth It and 'L on pinion a and segment 0 are of such shape as will prevent the roll N from moving too fast before a and c are securely in mesh. The roll N is thus given one revolution for each revolution of the press and the surface speed made to equal that of the type forms at the time of printing.

In the press shown, as in my aforesaid patent, the cylinder I prints the portions of the web ski ped by the cylinder I, and which are fed in w ile the impression is thrown off. The cylinder I, prints the parts of the web which are fed in during the taking of impressions; and the cylinder I prints the parts of theweb which are fed in after impressions. By this means I am enabled to print say-thirty-five inches of web at each printing stroke of the web, although only seventeen and one-half inches (less margins) are fed forward during the actual taking of an impression,and the remaining seventeen. and onehalf inches of web, (plus margins), are fed forward while the impression is thrown off, as explained in my aforesaid patent. It is therefore only necessary that the web be fed at variable speed during the taking of the impression, and this is precisely accomplished by the engagement of the bed driven rack 61 with segment 6.

After the taking of impression, and while the impression is thrown off, the roll N may be driven uniformly, if desired, by means of the segment 0 and pinion a, provision being made by the enlarged teeth f, g, h and "L, for preventing any jerk or sudden change of speed of the web during the transposition of roll N, from the control of rack d and segment 6, to the control of pinion a and segment 0, and vice versa.

The roll P can be driven'from the roll N, as

shown, and it follows that it has the same peripheral speed as roll N, and will draw the web through the press at exactly the same speed as it is fed thereto by the roll N.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a web printing press, the combination of a printing cou le a web feeding roll, gears on the roll shaft, and two actuating means alternately engaging with the respective gears whereby the roll is continuously rotated at varying peripheral speed.

2. In a web printing press, the combina tion of a printing couple a web feeding roll a reciprocating rack, a driven pinion, and two segments on the roll shaft adapted to engage respectively with the rack and with the pinion, the rack and pinion alternately engaging with their respective segments, whereby the roll is continuously rotated at varying peripheral speed.

In a web printing press, the combination of a printing couple a web feeding roll, a reciprocating rack, a driven pinion, and two segments on the roll shaft adapted to engage respectively with the rack and with the pinion, the rack and pinion alternately engaging with their respective segments, whereby the roll is continuously rotated at varying peripheral speed and means for insuring registration of the rack and its segment at the time of the engagement therebetween, and

for insuring registration of the pinion and its' segment at the time of the engagement therebetween.

4. In a printing press, the combination of a reciprocating bed, a reciprocating rack, a driven pinion, a web feed device, and a pair of segmental gears connected with. said device, one of said segments being adapted to mesh with the rack during the printing stroke of the bed, and the other of said segments adapted to mesh with the pinion during the return stroke of the bed.

5. In a printing press, the combination of a reciprocating bed, a rack connected therewith, a continuously driven pinion, a web feed roll, a pair of segmental gears on said roll, one of said segments being adapted to mesh with the rack during the printing stroke of the bed and the other of said segments adapted to mesh with the pinion during the return stroke of the bed.

6. In a printing press, the combination of a reciprocating bed, a reciprocating rack, a driven pinion, a web feed device, and a pair of segmental gears connected with said device, one of said segments being adapted to mesh with the rack during the printing stroke of the bed, and the other of said segments adapted to mesh with the pinion during the return stroke of the bed; and means for insuring registration of the rack and its segment at the time of the engagement therebetween and for insuring registration of the pinion and its segment at the time of the engagement therebetween.

7. In a printing press, the combination of a reciprocating bed, a rack connected therewith, a continuously driven pinion, a web feed roll, a pair of segmental gears on said roll, one of said segments being adapted to mesh with the rack during the printing stroke of the bed and the other of said segments adapted to mesh with the pinion during the return stroke of the bed; said segments alternately coming into mesh with the rack and pinion respectively, and means whereby registration of the segments with the pinion and rack respectively is insured at the time of engagement therebetween.

S. In a printing press, the combination of a type bed and cylinder co-acting therewith, means for directing a web between the bed and cylinder, arack moving with said bed, a feed roll, a segment on the feed roll adapted to engage the rack during the printing stroke of the bed, whereby the roll is driven at a speed uniform with the movement of the bed during the printing operation, and means whereby when the rack and its segment go out of mesh the roll is caused to complete its rotation before the rack and its segment again come into mesh.

9. In a printing press, the combination of a reciprocating bed, a cylinder co-acting therewith, means for directing a web between the bed and cylinder, a web feeding roll, a rack reciprocating with the bed, a gear on the roll shaft engaged by said rack during the printing stroke of the bed whereby the feed roll is driven at a peripheral speed or caused to feed the web at a speed exactly uniform with that of the movement of the bed during the printing operation. 10. In a printing press, the combination of a type bed and cylinder co-acting therewith, means for directing a web between the bed and cylinder, a rack moving with said bed, a feed roll, a segment on the feed roll adapted to engage the rack during the printing stroke of the bed, whereby the roll is driven at a speed uniform with the movement of the bed during the printing operation, and means whereby when the rack and its segment go out of mesh the roll is caused to complete its rotation before the rack and its segment again come into mesh; with a delivery roll, and gearing between the feed and delivery roll whereby the delivery roll is actuated at a peripheral speed uniform with that of the feed roll.

11. In a printing press, the combination of a IGClpIOCZLtlIlg bed, a cylinder co-acting therewith, means for directing a web between the bed and cylinder, a web feeding roll, a rack reciprocating with the bed, a gear on the roll shaft engaged by said rack during the printing stroke of the bed whereby the feed roll is driven at a peripheral speed or caused to feed the web at a speed exactly uniform with that of the movement of the bed during the printing operation; with means whereby during the return stroke of the rack and bed the roll is continuously driven forwardly so as .to feed additional paper to the press, and means for insuring registration of the rack and gear at the be ginning of each printing stroke of the bed.

12. In a printing press, the combination of a type bed, a cylinder co-acting therewith, means for directing a web between the bed and cylinder, a rack moving with the bed, a feed roll, a gear on the feed roll adapted to engage the rack during the printing stroke of the bed and whereby the roll is driven at a speed uniform with the movement of the bed during the printing operations, a pinion, means for rotating said pinion, and a second gear on the feed roll adapted to engage with said pinion when the rack and the first mentioned gear go out of mesh whereby the roll is caused to complete its rotation before the rack and its co-acting gear again come into mesh.

l3. In a printing press, the combination of a printing couple, a web feeding roll, a reciprocating rack, a driven pinion, and two seg ments on the roll shaft adapted to engage respectively with the rack and with the pinion, the rack and pinion alternately engaging with their respective segments, whereby the roll is continuously rotated at varying peripheral speed; with a delivery roll geared between the feed and delivery roll whereby the delivery roll is actuated at a peripheral speed uniform with that of the feed roll.

14. In a'printing press, the combination of a reciprocating bed, a rack connected therewith, a continuously driven pinion, a web feed roll, a pair of segmental gears on said roll, one of said segments being adapted to mesh with the rack'during the printing stroke of the bed and the other of said segments adapted to mesh with the pinion during the return stroke of the bed; with means for insuring registration of the rack and its segment as the pinion and its segment disengage, and means for causing the registration of the pinion and its segment as the rack and its segment disengage; a web delivery roll and gearing between the feed and delivery rolls whereby the latter is driven at a peripheral speed uniform with that of the feed roll.

15. In a printing press, the combination of a type bed, a cylinder coacting therewith, means for directing a web between the bed and cylinder, a rack moving with the bed, a feed roll, a gear on the feed roll adapted to engage the rack during the printing stroke of the bed and whereby the roll is driven at a speed uniform with the movement of the bed during the printing operations, a pinion, means for rotating said pinion, and a second gear on the feed roll adapted to engage with. said pinion when the rack and its segment go out of mesh whereby the roll is caused to complete its rotation before the rack and its segment again come into mesh; with means for insuring registration of the rack and its segment as the pinion and its segment disengage, and means for causing the registration of the pinion and its segment as the rack and its segment disengage, a web delivery roll and gearing between the feed and delivery rolls whereby the latter is driven at a peripheral speed uniform with that of the feed roll.

16. In combination, a bed, means for reciprocating said bed, a pair of cylinders coacting with the bed, means for directing a web successively between the bed and cylinders, a feed roll, a rack moving with and connected to the bed, a segment on the roll shaft adapted to be engaged by the rack during the forward movement of the bed. and operate the roll during the printing period, and means for continuously rotating the roll independently of the rack and segment during the return stroke of the bed, whereby a length of web is fed between the bed and cylinders during impression, and an additional length of web is fed between the bed and cylinders after impression.

17. In combination with a bed, means for reciprocating said bed, a pair of cylinders co acting with the bed, means for directing a web successively between the bed and cylinders, a feed roll, a rack moving with and connected to the bed, a segment on the roll shaft adapted to be engaged by the rack during the forward movement of the bed and operate the roll during the printing period; a second segment on the roll shaft and a driven pinion adapted to engage said second segment and continue the rotation of the roll, independently of the rack and segment during the return stroke of the bed, whereby a length of web is fed at variable speed be tween the bed and cylinders during impression, and an additional length of web is fed between the bed and cylinders after impression.

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

PAUL FLEMMING COX. Witnesses:

JAMES R. MANsFIELD, GEO. M. BOND.

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