US2096869A

US2096869A - Printing press

Info

Publication number: US2096869A
Application number: US755855A
Authority: US
Inventors: Tornberg Isidor
Original assignee: Wood Newspaper Machinery Corp
Current assignee: Wood Newspaper Machinery Corp
Priority date: 1934-12-04
Filing date: 1934-12-04
Publication date: 1937-10-26
Anticipated expiration: 1954-10-26

Description

Oct. 26, 1937.

I. TORNBERG PRINTING PRESS 1 Filed Dec. 4, $934- 3 Sheets-Sheet l ZZrIMZs/y,

f ME M Oct. 26, 1937. '1. TORNBERG 2,096,869

7 I PRINTING PRESS File d Dec. 4, 1934 3 Sheets-Sheet 2 l. TORNBERG PRINTING PRESS Oct. 26, 1937.

Filed Dec. 4, 1934 a Sheets-Sheet s IF? v Patented Oct. 26, 1937 v 1 v STA ES PRINTING PRESS Isidor Tomberg, Plainfleld, N. 3., assignor to Wood Newspaper Machinery Corporatiom New York, N. E, a corporation oi Virginia Application December 4, 1934, No. 755,855

This invention relates to the obviation of the difficulty encountered in splicing a webroll, due to the fact that the leading end of the new web and the following end of 'the old web have to pass through the printing couple together on account of the splice, this double thickness of web being detrimental to the type and blankets.

The principal object of the invention, therefore, is to provide for obviating this difficulty,

is particularly when hard packing is used. The

invention also involves a convenient and inexpensive mechanism for releasing the impression when the double web passes through and the provision of automatic means for operating the releasing means controlled by the pasting mechanism so that the release will take place at'the proper time.

Other objects and advantages of the inventionwill appear hereinafter;

Reference is to be had to theaccompanylng drawings, in which Fig. l is a diagrammatic endelevation of a printing press showing an ordinary web supply means and an ordinary splicing device;

Fig. 2 is an enlarged view of the press showing the releasing means;

Fig. 3 is an elevation of a printing unit showing the releasing means or impression throw-0E device;

Fig. 4 is a diagrammatic wiring diagram;

5 is an enlarged elevation of certain parts shown in Fig. 2;

Fig. 6 is an edge view of the same, with parts in section, and

I Fig. '7 is a sectional view on the line i -l of Fig. 5..

The use of hard packing on an impression cylinder, combined with the employment of automatic machinery for splicing web rolls, involves damage to the type and blankets when the two .webs that have been spliced together pass through the printing couple. This invention is designed to obviate this difliculty.

The invention is illustrated as applied to a well known type of printing press, a well known web supply device, and a splicing device also of a well known character.

In the form shown, columns i form a support for and brackets 2 which in turn support a shaft 3. On this shaft are mounted spiders 4 constituting a reel for rotatably supporting a running roll R and a spare roll S. A motor 6 mounted on one of the end brackets his provided with a ,55 worm l to operate a worm wheel 8 connected RBSSUED' JAN 9 ME with the spiders t by the shaft 8 reel.

A bracket 9 attached to the bed plate ill provides a pivotal support for a brush frame ii. This brush frame, as usual,- carrles a solenoid it which operates a brush or brushes it to press the running web W against the spare roll S at the proper time. A plunger M for the solenoid is shown connected with a link l5, the other end of which is pivotally connected to an arm it carried on a brush arm shaft ii. A series of brush arms 98 support the brushes I3. A spring l9, operating through a'collar 20 connected with the link it, tends to keep the brushes in the position shown in Fig. 1. As is well known, the energizing of the solenoid l2 causes the plunger It to be lifted, overcoming the resistanceof the spring l9, and thus rotating the shaft I! in a clockwise direction to press the web W againstthe spare roll S. This mechanism is used to effect a splicing from the running web to the spare roll. A knife 2! is shown diagrammatically. It will be understood 'that it is pivotally mounted on the brush frame ii for severing the web W after the splicing operation is completed.

All the mechanism described above is well known in this art. The solenoid i2 is energized through a contact 52 and push button 53.

The splicing operation, of course, necessitates the passing of .the following end of the running for rotating the web W and the leading end of the new web from the spare roll S together through the printing couple.

Means is provided, according to this invention, for releasing the impression between the cylinders of the two printing couples during the time when the two webs are passing through so that no damage will be done.

A printing unit is shown comprising two impression cylinders22 and 23' cooperating with two

plate cylinders

24 and 25 respectively. These plate cylinders are supplied with ink from

ink motions

26 and 21 in any well known way. The

impression cylinders

22 and 23 are mounted in double eccentric bearings 28 and 29 respectively. The bearings are provided with regulating worms so and 3! respectively operating worm wheels for setting the normal impression. Each worm is provided with avcircumferential series of holes through which they can be adjusted by a screw driver or other simple tool by'hand. The outer members of the bearings 28 and 29 carry overlapping radial circular projections 32 and 33' respectively which are spaced apart and I normally registering with each other. The projections are partially enclosed by opposite projections 35 on a throwout rod 34. When the projections 35 are raised or lowered, the two eccentric bearings 28 and 29 will turn through the

projections

32 and 33 to move the

impression cylinders

22 and 23 slightly away from the

plate cylinders

24 and 25, thus interrup the impression.

The bottom end of the rod 3| is yoke shaped to fit over a shaft 88. The bottom end of the rod 34 carries a cam roll II. The roll-I1 cooperrtes with the path of the closed cam 28 and is rotated by a shaft 41 on which the cam is fixed. The lower end of the rod 34 is located along the shaft 36 by a collar 54. A bracket II guides the top end of the rod 34.

On the end of one impression cylinder 23 is a gear 40 rotating, of course, with the cylinder. This is a bevel gear meshing with a bevel gear H on a shaft 42 mounted on suitable brackets 43. On the other end of this shaft 42 is a worm 45 which meshes with a helical gear I on said shaft 41. On the end of this shaft 41 is a steel disc 39 which constitutes a part of a magnetic clutch 48. Thus, any rotation of the printing couple, including the impression cylinder 23, will rotate the bevel gear 40 and therefore the disc 39 of .the magnetic clutch. The magnetic clutch 48 is secured to the shaft 38 and may be energized through wires 49 and suitable collector rings, not shown to rotate the cam ll. The path of the cam 38 shown in Fig. 1 is such that a single rotation of this cam will move the rod vertically and turn the two eccentrics 2| and 20 through their projections 32 and If to release the impression on the two printing couples while a definite length of paper passes through them. The impression is reset to the original amount at the end of that time. A projection II is carried by the cam SI for operating-the roller of a switch II.

It will be noted that the shaft It extends across the press and carries a second cam similar to the cam 38 and an entire duplicate equipment so that the impression is released at both ends of the printing couple simultaneously.

When the solenoid I2 is energized to pull up the plunger and effect a splice between the running web and the spare roll 8 a relay device is used to energize the magnet clutch ll. Since the steel disc 39 is rotating, the frictional contact between that disc and the magnetic clutch ll, of course, causes the shaft 88 to turn. when the contact is made in the switch II, it serves to continue to hold the'magnetlc clutch ll until such time as the cam ll has made one complete revolution and opened the contacts in the switch I. This deenergizes the magnetic clutch II. This causes the rotation of the shaft 20 to stop. At this time the splice will have passed through both printing couples while the impression is relieved. The papers. printed during this period havei'obethrownawayinanycase.

In case the web splicing arrangement is at a considerable distance from the printing unit a delay device mm between thesplicing mechanism and the impression relieving mechanism so that the reliefcanbe obtained'at asuitable 7o tlmeafterthe spliceismadetcenablethespliced the upper'end of the shaft 02 a disc '0, a collar 51, and a spring I. which bears against a drum I. The drum 5. is rotatably mounted on the 2,ocs,acc

nected in parallel with the brush solenoid l2 it, becomes energized and withdraws the toe 6| from the projection 60, permitting the drum 59 to rotate proportionately to the speed of the press. A projection It also carried on the drum it engages a switch 64 to close the contacts therein.

By tracing out the wiring it will be seen that the magnetic clutch 42 becomes energized and relieves the impression on the two printing couples as above described. The moment that the magnetic clutch 4! becomes energized so that the cam it begins rotation, the contacts in the switch ii are closed and keep the magnetic clutch ll energized, even though the .contacts :in the switch 64 are open, until the cam 38 has made one complete revolution. At that time the contacts in the switch I are opened and the magnetic clutch 48 is deenergized. It is also evident that the opening of the contacts'in the push button il'prevents any further energization of the solenoid 62 which allows the II to re-engage the projection 60 after one revolution of the.

drum is.

"Having thus described my invention and the advantages thereof, I doubt wish to be limited to the details herein disclosed, .otherwise' than as set forth in the claims, but what Iclaim is:-

l. The combination with a printing couple, of means for making a web splice, means for releasing the impression between the cylinders of the couple, and means cooperating with the splicing means for automatically operating the releasing means when a splice is made.

-2. The combination with a printing couple and a splicing device, of means cooperating with the splicing device for releasing the impression between the cylinders cf the couple.

3. The combination with a printing couple, of means for releasing the impression between the cylindersof the couple, a splicing device, and means operated in conjunction with the splicing device for setting the releasing means into operaticn.

4'. The combination with a printing couple, of a web supply device, a splicing device, means for starting the splicing device into operation, means for releasing the impression between the cylinders of the printing couple, and means operated by the said starting means for initiating the action of the releasing means.

5. The combination with a printing press comprising two printing couples, of a shaft, means operated by one cylinder of one of said couples for turning said shaft, a second shaft, a magnetic clutch for connecting the first shaft to cause the second shaft to turn, a cam on the second shaft.

and means operated by the cam for releasing the impression between both printing couples.

8. The combination with a printing couple and means for releasing the impression between the cylinders thereof, of a shaft constantly operated by the impression cylinder of said couple, a second shaft, means operated by the second shaft for operating said releasing means, and a clutch for connecting the two shafts together.

' '1. The combination with a printing couple and means for releasing the impression between thecylinders thereof, of a, shaft constantly operated by the impression cylinder of said couple, a second shaft, means operated by the second shaft for 7 operating said releasing means, a magnetic clutch for connecting the two shafts together, a splicing mechanism, and means for simultaneously energizing said clutch and starting the splicing mechanism into operation.

8. In a printing machine, the combination of a printing couple, a shaft constantly operated by one of the cylinders of said couple, a second shaft,

for rotating said shaft when said cylinder roa magnetic clutch connecting the two shafts to operate the second shaft, a cam on the second shaft, a movable rod, said cam being connected to move the rod, means operated by the rod for releasing the impression between the cylinders of said couple, and means whereby, at the end of the complete rotation of said cam. the cylinders will be reset to restore the impression to its original condition.

9. In a perfecting printing press, the combination of two printing couples, a shaft, means connected with a cylinder of. one printing couple tates, a second shaft, means for connecting the. two shafts to rotate the second shaft with the first one, a cam on the second shaft, 9. reciprocable rod having a yoke and a rollerv cooperating with said cam to reciprocate the rod. said cylinder and the corresponding cylinder of the other couple having eccentric bearings, means on the rod for turning the eccentric bearings when the rod is reciprocated by the cam in one direction for turning the two cylinders away from their companion cylinders and releasing the impressions.

10. In a printing machine, the combination of a splicing device comprising a solenoid, printing couples, a shaft. connected with the printing couples to be rotated thereby, a second shalt. a

magnetic clutch for connecting said to gether, means whereby, when the solenoid is energized, the magnetic clutch also will be energized, and means connected with the second shaft for releasing the impression between the cylinders of said couples, whereby the double web caused by splicing, when passing through the printing couple, will be relieved of pressure, for the purpose described. ii. The combination with a printing couple, means for releasing the impression between the cylinders of the couple, a splicing device, and

- means operated in conjunction with the splicing device for setting the releasing means into operation at a predetermined time after the splicing device acts to produce a splice.

12. In a printing machine, the combination of a printing couple, a cam operated by one of the cylinders of the printing couple, a movable rod, said cam being connected to move the rod, means operated by the rod ior releasing the impression between the cylinders of said couple, and means whereby, at the end of the complete rotation of 1 means for releasing the impression just before the spliced webs pass through the printing couple and restoring the impression Just after the spliced webs have passed through the printing couple.

IBIDOR 'I'ORNBERG.