US884901A - Web-printing press. - Google Patents

Description

8. 1. w m l H x y .s 4. t 0 1 T 0 um. u P E. F. A n D. /u E M w A P -l D OND 0.1m .TI R FNP n, ,.IN .u PRw m PT.. m BM NT EM m WM A PATENTBD APR. 1419o84.

Pf?. 00X.- WEB PRINTINGIPRESS,

APPLICATION FIILED :E1-1&8. 190B. 2 SHEETS-SHEET 2.

|||||| Il.. Jill THE Norzms PETERS Ca., wAsHlNaYoN. D. c..

o illustrat UNITED srnrnsrnrENT oFFroE.

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

Aum13-P1a1-1v'r11vcr PRESS.

Specification of Letters Patent.

Patented April 14, 1908.

Application led February 3, 1908. Serial No. 414,008.

To all whom it may concern." i @Be 1t known that I, PAUL FLEMMING Cox, of Jackson, in the county of Jackson and State of Michigan, have invented certain new 5 and useful Improvements in Web-Printing Presses; and I hereby 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.

and is particularly designed for use in presses such as shown ini Patent No. 847,912, granted to me on the 19th day of March, 1907. In such press the cylinders are rotated continuously in one direction while the 20 bed is reciprocated back and forth thereunder. The cylinders take impressions from the type on one stroke of the bed, and the impression is thrown off during the return stroke of the bed.

In the present invention the periphery of the cylinders is moved in unison with the type form by means of segmental gears on the cylinders engaging racks on the bed, and when the impression is thrown off the cylinders are caused to continue to rotate, in a forward direction, during the return movement of the bed by means of a pair of toothed segments which operate a lay-shaft and gearing between said shaft and cylinders. The

segments are in mesh when the bed rack and cylinders are out of meshand vice versa.

The invention will be fully understood from the accompanying drawings and the following explanation, said drawings only 'ng such parts of the press as are necessary to impart a clear understanding of the invention.

In said drawings-Figure 1 is a side elevation of part of a bed-and-cylinder web-print- 5 1n ress showin means for reci rocatin the ed and for rotating the cylinders continuously in one direction. Fig. 2 is a longitudinal section through Fig. 1. Figs. 3, 4, 5, 6 and 7, `are diagrammatic views illustrating 0 the'various positions of the parts assumed durmg one reciprocation of the bed.

As shown in the drawings, the type bed B can be reci rocated by pitman C, connected to hangers B, on the bed and to crank pins 5 on crank gears J, mounted on the main shaft J', and driven by a pinion K, on a shaft c, which may be driven in any suitable manner.

Above and coacting with bed B, are two impression cylinders A, A, and to each cylinder is secured a cylinder gear D, the teeth of which extend only part way around its periphery, the untoothed spaces of its periphery beingl indicated by E, Figs. 1 and 2.

Secured to bed B, are two racks F, F, adapted to engage and co-act with the respective cylinder gears D. These racks F, F, are shorterthan the travel of the bed, but are somewhat longer than the type forms, indicated at G, Fig. 2, on the bed. The racks are so located that the gears D Will be securely in mesh therewith before the cylinders A contact with the forms G. By this means the cylinders A, A, are rotated in unison with the type forms during impression. After impression and when the gears D go out of mesh with racks F, the rotation of the cylinders is continued in the same direction by the following means: Secured to the shaft J, is a segmental gear or segment H, meshing with a segmental gear or segment I, secured to a arallel shaft I.

2 which meshes with a bevel gear L on a vlay- On shaft Il is a bevel gear shaft Il, which extends alongside of the bed,

and at the ends of the cylinders A, and is journaled in suitable bearings as shown.l The shaft L carries bevel gears-L2, meshing with bevel gears A2 on the shafts of the cylinders A, as shown in Fig. 1. When the segmental gears, H, I, are out of mesh, the layshaft will be driven from the cylinders A, A; but when the cylinder gears D, and bed racks F, are out of mesh, the shaft L will be driven by the segments H, I, in proper time and manner to continue the forward rotation of the cylinders A, A.

The segments I-I and I are so proportioned that they will drive the cylinders A, A, through the lay-shaft Il, and gears, at a peripheral speed exactly equal to that of the bed movement when the crank-pin y' is at the point indicated at c, in Fig. 3, (or at the point c in Fig. 5). At this time, when the parts are in the position indicated in Fig. 3, the cylindergears D, and bed racks F, are just coming into mesh, and at this moment the cylinders ass from the control of the segments H, II, into the control of the cylinder gears D, and bed racks F.

When the parts are in position indicated in Fig. 5, thebed is just losing control of the cylinders (racks F just going out ot mesh with gears D) and the segments H, I, are just taking control of the cylinders through shaft L. The parts are so arranged that the cylinders are driven part of the time and during impressions by the bed, and thereafter their rotation is completed by the action of layshaft L driven by the segments H, l.

The cylinders A revolve in one direction continuously and the gearing is so proportioned that the cylinders make one revolution to each reciprocation of the type bed, and each revolution of the crank-shaft J.

The diagrams, Figs. 3, 4, 5, 6 and 7, show the positions assumed by the respective cylinder driving devices during one rotation of the cylinders, or one stroke of the bed. In said diagrams, the lines h, i, represent the teeth of the segments H, I; the teeth of the gears D are represented by lines d; and the teeth ol racks F on bed B are represented by lines f.

As illustrated in Figs. l, 2 and 3, the bed is traveled a short distance on its forward stroke. The teeth 71., t', of segments H, l, are just about to disengage and the teethf, d, of racks F and gearsD, have just engaged.

Fig. 4 shows the bed in the middle of its forward stroke, the segments H, l, being now disengaged, and the cylinders are rotated by the engagement of the teeth f, d, of bed racks F, and cylinder gears D.

Fig. 5 shows the bed near the completion of its forward stroke, the teeth 7L, t, ot segments H, l, are now just engaging and the teeth f, d, oi' racks F and gears D are just ready to disengage.

Fig. 6 shows the bed at the end oi its forward and the beginning of its return stroke. The teeth h, t of segments H, l, have again come into mesh and will now drive the cylinders A, A, through the lay-shaft L and gearing. The teethf, d, of racks F and gears D are Wholly disengaged, while the impression is thrown off.

Fig. 7 shows the bed in the middle of its return stroke, the teeth 7L, i, of segments H, I, being still in engagement and the teeth (Lf, of gears D, and racks F, are out of ,engagement; the impression being still thrown ofi.

By the mechanism above described it will be seen that the cylinders are driven continuously in one direction they are driven during impression by the bed racks and cylinder gears, and that when the impression is thrown ott their rotation is continued by reason of their gearing to the lay-shaft which is then positively driven by the segments H and I. During impression the segment l is driven from the cylinders, through the layshaft and gearing, in proper time to mesh with segment H, just before the bed racks go out of mesh with the cylinder gears, and while the impression is thrown ott' the cylinders are driven from the lay-shaft so that the cylinder gears D will come into proper position to mesh with the bed racks l", berl'ore the cylinders again come into printing contact. By this means the web ian be continuously 'fed through the press by the cylinders, substantially as described in my Patent No. 880,282, dated February 25, Mitts', without the use oi looping mechanism.

The course oi the web through the press and the guides -for the press are clearly indicated in Figs. 1 and 2, and are similar to that shown in my said patent, and therel'ore need no detailed explanation herein.

Having thus described my invention what l claim and desire to secure by Letters Patent is:

l. ln combination, a recijirocating type bed, a cylinder co-acting therewith, a segmental cylinder gear, a bed rack engaging therewith tor driving the cylinder in one direction; a lay-shaft, gearing between said la yshait and the cylinder, and segmental gears tor actuating the lay-shaft when the bed rack and cylinder gear are out olt mesh.

ln a printing press, the combinat ion ol' a reciprocating type bed, a cylinder eo-acting therewith, a bed rack and a segmental cylinder gear engaging therewith l'or rotating the cylinder during impression, a lay-shaft and gearing between said shait and said cylinder, and means for driving the lay-shalt to cause the cylinder to complete its rotation when the impression is thrown oli.

3. ln a printing press, the combination oll areciprocating type bed, an impression cylinder eo-acting therewith, a crank shai't and pitman for operating the bed, a segmental gear on the cylinder, a eo-acting bed rack on the bed, for rotating the cylinder during impression; segmental gears driven by the crank shaft, and gearing operated by said segmental gears tor completing the rotation ol' the cylinder after impression.

4. ln a printing press, the combination ot a reciprocating type bed, an impression cylinder co-acting therewith, a segmental gear on the cylinder, a bed rack on the bed adapted to engage said segmental gear and rotate the cylinder during impression, a crank shai't and pitman for reciprocating the type bed, a lay-shaft geared to the cy inder, and segmental gearing vfor operating said lay-shalt to continue the iliorward rotation ot the cylinders while the cylinder gear and bed rack are out of mesh.

5. In combination, a reciprocating type bed, a cylinder co-acting therewith, a bed rack, and a segmental cylinder gea-r tor driving the cylinder during impression, a, layshaft, bevel gearing between said cylinder and. said shaft, and segmental gears for driving said lay-shaft when the bed-rack and cylinder-gear are out oi mesh.

6. ln combination, a reciprocating type bed, a cylinder co-acting therewith and adapted to rotate continuouslyin one direction, a rack on the bed, a segmental gear on lthe cylinder engaging said rack for rotating vthe cylinder during impression, a crank shaft y to rotate 1n the same direction, while the bedrack and cylinder-gear are out of mesh.

7. In a printing press, the combination of a reciprocating type bed, a pair of cylinders simultaneously co-acting therewith, segmental gears on the cylinders, and, racks on the bed adapted to engage the cylinder gears and rotate the cylinders during impression; with a segmental gear, means for rotating said gear once for each reciprocation of the bed, and gearing between said segmental gear and the cylinder shaft for completing the rotation of the cylinders after impression.

8. In a printing press, the combination of a reciprocating type bed, a pair of cylinders co-acting therewith, bed racks, segmental gears on the cylinders engaging said racks to rotate the cylinders during impression; a lay-shaft, gearing between said shaft and each cylinder for continuing the rotation of the cylinders while the impression is thrown off, and means for drivin the lay-shaft when the bed-racks and cy inder-gears are out of mesh.

9. In a printing press, the combination of a reciprocating type bed, a pair of impression cylinders co-acting therewith, a segmental gear on each cylinder, bed-racks on the bed adapted to engage said segmental gears and rotate the cylinders during impression; a crank-shaft and pitman for reciprocating the type bed a lay-shaft geared to the cylinders, and gearing for operating said lay-shaft from said crank-shaft to continue the forward rotation of the cylinders while the impression is thrown off, and the cylinder gears and bedracks are out of mesh.

10. In combination, a reciprocating type bed, a pair of cylinders co-acting therewith and adapted to rotate continuously in one direction, racks on the bed, segmental gears on the cylinders engaging said racks and rotating the cylinders during impression, a crank-shaft and connections for reciprocating the type bed, a lay-shaft and gearing between said shaft and cylinders, a segmental gear on the crank shaft, and gearing between said segmental gear and the lay-shaft for actuating the latter so as to cause the cylinders to continue to rotate in the same direction when the bed racks and cylinder gears are out of mesh.

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

PAUL 'FLEMMIN G COX.

Witnesses: L ,i

BIRDE MoWILLIAMs, NINA M. BRECK.

Images