US2136683A

US2136683A - Printing machine

Info

Publication number: US2136683A
Application number: US70081A
Authority: US
Inventors: Urban F Gochoel
Original assignee: Egry Register Co
Current assignee: Egry Register Co
Priority date: 1936-03-21
Filing date: 1936-03-21
Publication date: 1938-11-15
Anticipated expiration: 1955-11-15

Description

NOV. 15, 1938. E E' 2,136,683

PRINTING MACHINE Filed March 21. 1936 2 Sheets-Sheet 1 A l I nul 7 INVENTOR uEB/M/ 1-. 500 011.

BY e 2 ATTORNEYS NOV. 15, 1938. U, GQCHQEL 2,136,683

' PRINTING MACHINE Filed March 21. 1936 2 Sheets-Sheet 2 ATTORN EYS Patented Nov. 15, 1938 PATENT OFFICE PRINTING MACHINE Urban F. Gochoel, Dayton, Ohio, assignor to The Egry Register Company, Dayton, Ohio, a corporation of Ohio Application March 21,

11 Claims.

This invention relates to printing machines.

It is an object of this invention to provide a constant speed printing roll with a constant speed of paper sothat the successive printing impressions made by the roll are equi-distant from one another, in combination with a supporting roll provided with a resilient covering and traveling at a lesser speed, the impressions upon which latter roll are always progressively at different places on the surface thereof.

It is a further object of this invention to provide a paper supporting roll having a resilient ink resistant cover, which roll is adapted to support paper against the impression surface of a printing roll and which supporting roll is adapted to be driven by the frictional engagement of the printing roll therewith.

It is a further object of this invention to provide such a paper supporting roll which travels at a lesser speed than the printing roll whereby to produce a constant slip of the resilient surface of said roll with respect to the inside surface of the paper supported thereby against the impression surface of the printing roll.

It is a further object of this invention to provide means for regulating the pressure between said rolls with great accuracy and within predetermined limits.

It is a further object of this invention to provide inking means for the printing roll comprising an ink well and distribution rollers, one of said distribution rollers being engaged by a smaller steel roller to produce a final smooth spread of ink on the roller surface in order to prevent uneven application of ink to the printing roll.

It is a further object of this invention to provide a pair of printing rolls and resilient paper supporting rolls, said printing rolls being driven, in synchronism, from a common source of power and adapted to contact different peripheral portions of the resilient roller, one of said printing rolls having thereon printing plates adapted to print a ticket form of one color and the other of said rolls having printing plates or patches thereon and adapted to provide additional printed matter on the tickets printed by the first roller in a different, contrasting color, or of the same color.

It is a further object of this invention to provide means by which the resilient paper supporting roller may be selectively driven in synchronism with the printing rollers and from the common source of power.

It is a further object of this invention to provide means for supporting such a resilient roll 1936, Serial No. 70,081

and for accurately adjusting the contact pressure between such roll and the printing rolls.

It is a further object of this invention to provide means whereby the adjustment of one end of said roll will be accompanied by like adjustment of the other end, wherein misalignment of such roll with respect to the axes of the printing rolls is prevented.

These and other advantages will appear from the following description taken in connection with the drawings.

Referring to the drawings:

Figure 1 is a front elevational view of a machine embodying the principles of my invention;

Figure 2 is an elevational view in section taken through the centers of the printing rollers and paper support roller, on the line 2-2 of Figure 3;

Figure 3 is a side elevational view, partly in section, taken on the line 3-3 of Figure 2;

Figure 4 is a side elevational view, partly in section, taken along the line 44 of Figure 2;

Figure 5 is a top plan view of the machine, as shown in Figure 1.

Referring to the drawings in detail, the roller support frame comprises a pair of side standards I secured in rigidly spaced relation by means of braces 2. Extending transversely of the frame and journaled in the side standards I are

shafts

3, 4 and 5. The shaft 3 is journaled in fixed bearings 6 at its ends and carries integrally secured to one end thereof the drive pulley I. Rigidly attached to the central portion of the shaft 3 is the printing roll 8 which is adapted to have printing plates 9 rigidly attached thereto. Also rigidly secured on the shaft 3, adjacent one end of the roll 8, is a gear Ill. The shaft 5 has the opposite ends thereof journaled in fixed bearings II in the side standards I disposed below the bearing 6 therein. The shaft 5 has rigidly secured to the central portion thereof a printing roll or patch roll I! which is adapted to have printing plates or patches l3 rigidly secured thereto. Rigidly secured to the shaft 5, adjacent one end of the roll I2, is the gear [4.

The opposite end portions of the shaft 4 are rotatably received in bores l5 of bearing drums l6, which bearing drums have annular worm gear surfaces l I at their inner ends and thrust shoulders l8 at their midportions and cylindrical bearing surfaces 19 which are adapted to be rotatably mounted in circular apertures 20 in the standards I. An annular keeper disk 2| is secured to the outer radial face of each bearing drum I 6 by means of screws or studs Zia in order to retain the cylindrical barrel surfaces [9 in the circular apertures 20. The bores I5 in the hearing drums I6 are ecentrically disposed. Rotatably mounted on the mid portion of the shaft 4 is a roller having a rigid core 22 and a resilient covering 23. Secured in recesses in the radial end faces of this roller are outer ball bearing races 24 which are adapted to be supported by balls 25 which are supported by inner ball races 26 mounted on the shaft 4. The outer ball races 24 are secured in the recesses in the roller core 22 by means of retainer plates 21 which are secured to the radial end faces of the core 22 by means of screws or studs 28. Rigidly secured to the shaft 4, adjacent one end of the roll, is the gear 29. This gear meshes with the gear II] on the shaft 3 and the gear I4 on shaft 5 and thus causes

shafts

3, 4 and 5 to be rotated when power is applied to the pulley I on the shaft 3. One of the retainer plates 21 has an elongated cylindrical portion 30 having jaws 3| therein, which jaws are adapted to engage teeth 32 on a clutch member 33 which is splined on the shaft 4. By means of the clutch member 33, the paper support roll is freely rotatable on shaft 4 when the clutch member 33 is disengaged and the paper support roll may be connected to the shaft by engagement of the teeth 3| and 32 and the paper support roll rotated in synchronism with the printing rolls 8 and I2 respectively because of theengagement of the gears I0, 29 and I4, described above.

The eccentricity of the bores I5 with respect to the cylindrical bearing surfaces I9 of the bearing drums I6 is relatively slight and provides slight adjustment which is accommodated by the loose engagement of the teeth of the respective gears I0, 23 and I4. The adjustment of the shaft 4 is accomplished by means of a pair of worms 35 which are engaged with the Worm gear surfaces IT on the eccentric bearing drums (I6. The worms are supported in suitable brackets 36 attached to the standards I and have bevel gears 31 rigidly attached to the rear ends thereof. The bevel gears 31 are adapted to mesh with similar gears 38 which are supported on and rigidly secured to shaft 39 which has the ends thereof journaled in fixed bearings in the frame standards I. The forward end of one of the worms 35 has a shaft portion 40 extending therefrom, which extends forwardly beyond the front portion of the frame and has the handle 4| and pointer 42 rigidly secured thereto. The pointer is adapted to cooperate with radially disposed graduations on an indicator plate 43 which is secured by means of screws 44 to a flange 45 on one of the frame standards. The position of the pointer 42 in the normal position of the paper support roll is shown in Figures 1 and 5, particularly. By manipulation of the handle 4|, the position of the indicator 42 may be changed as desired, which movement will cause a rotation of the shaft portion 40 of one worm 35 in one or the other direction. This will cause rotation of the corresponding gear 31 which, through gear 38, rotates shaft 39 which has the second gear 38 rigidly secured thereto and rotatable therewith. Rotation of the second gear 38 will cause rotation of the second gear 31 which will cause the second worm 35 to be rotated in the same direction as the first worm 35. The joint rotation of the worms 35 will cause like rotation of the eccentric bearing drums I6 in the cylindrical bearing surfaces I9 of the standards I.

The graduations on the indicator plate 43 each preferably indicates .001 inch. Secured at each end to the back of a standard I by means of studs 46 is a pair of similar plates 41, which have warm mechanism connected therewith,

forwardly extending brackets 48 secured thereto by means of screws 49. These plates are spaced a slight distance below a pair of braces 2 in the form of rods which are described above. Each of these brackets 48 is adapted to support three resilient inking rollers 50 having their cores or pintles 5| supported in notches 52 in the brackets 48, as shown particularly in Figure 3. Journaled at each end in one bracket 48 is a steel roller 53 which is adapted to have the foremost resilient roller 50 rest freely thereupon, which foremost roller is adapted to contact the printing plate 9 on the printing roll 8. Adapted to be adjustably secured on the brace or rod 2 by means of screw 54 is an ink well or reservoir 55 having journaled therein a roller 56, preferably of metal, which is adapted to contact the uppermost resilient inking roller 50. When the printing roll 8 is rotating and the ink well or reservoir 55 is filled with ink, the rotation of the plate 9 causes rotation of the foremost roller 50 which rests upon the steelormetal roller 53. The rotation of the foremost resilient roller 50 is transmitted through the intermediate resilient roller to the uppermost resilient roller 5|], which roller, because of its contact with the distributing roller 56, causes ink to be transmitted from the interior of the ink well or reservoir 55 by means of distributor roller 56 to the uppermost inking roller and thence to the intermediate inking roller, from whence it is transferred to the foremost inking roller.

With the direction of paper feed, as indicated by the arrows in Figure 4, the rotation of the foremost inking roller 50 will be clockwise and freely rotatable metal or steel roller 53 will be rotated counterclockwise. The metal roller 53 will thus prevent the foremost inking roller 50 from transferring excessive quantities of ink to the plate 9 of printing roll 8 because this metal roller 53 will cause the ink to be uniformly distributed in a thin film progressively over the circumference of the foremost inking roller 50 before it reaches the printing plate 9 on the roll 8. The ink wells or reservoirs 55 and rollers 56, as

well as the resilient inking rollers and ink distributing metal rollers 53 are identical for the respective printing rolls 8 and I2 and the inking units operate in the same manner, although I preferably use inks of different colors in the respective ink wells or reservoirs 55.

When it is desired to adjust the press, the clutch member 33 is preferably engaged, having the teeth 32 thereof engaged with the teeth 3| to connect the paper supporting roll for rotation with the shaft 4. The

shafts

3, 4 and 5 are then rotated together. When the rollers have been suitably adjusted by means of the handle M and the clutch member 33 is disengaged and the paper supporting roll is allowed to rotate freely with respect to the shaft 4. The rotation of this roller is caused mainly by the movement of the paper which is caused to move by the rolls 8 and I2. There is, however, a slight frictional rotative force exerted on the paper support roll because of the friction existing in the ball bearings which support it on the shaft 4, which is rotated with the shafts 3 and 5. There is a certain degree of slippage which occurs between the resilient cover 23 of the paper support roll and the rear surface of the paper, which prevents the respective portions of the printing plates and patches 9 and I3 respectively from abutting the resilient surface 23 at the same points on continued rotation. The printing plates or patches I3 remain in synchronism with the printing plate 9 on the roll 8 because of the gearing connecting the shafts 3 and 5, to which the rolls 8 and I2 are rigidly secured. These patches I3 are substantially smaller than the printing plate 9 and therefore a plurality of different patches may be used, as is shown in Figure 4. If desired, the inking mechanism for the printing roll I2 may be removed and the patches I3 removed from the printing roll I2 or, if desired, the same procedure may be followed in omitting the printing by the printing roll 8. The metal or steel ink spreader rollers 53, as before pointed out, exert a final spreading action upon the ink carried on the periphery of the foremost inking roller 50.

The covering 23 of the paper support roll may be of any desired resilient material, such as rubber, but I preferably use a material having 'the desired properties of rubber and in addition a substantially higher resistance to printing inks, such as synthetic rubber, and of these rubbers I prefer Duprene which has been found by me to be entirely satisfactory. The external surface of the covering 23 must be very smooth and hard so as to present the least possible friction to the paper I, and I have found that synthetic rubbers and especially Duprene give a smooth, hard surface and a body of desired resiliency in combination with high resistance to inks, but it is to be understood that the use of equivalent materials is comprehended by me. By means of the handle M and pointer 43, I may secure exact adjustments of the paper supporting roll with respect to the printing rolls 8 and I2, and the loss of adjustment is prevented by the use of worms 35 and worm gear surfaces I'I.

Furthermore, it is to be understood that the resilient covers of the inking rollers 50 may be of rubber or, where the use thereof is permitted by the ink used, of synthetic rubber, such as Duprene. It is further to be understood that the ink distributing roller 53 may be of other desired materials than steel.

It will be understood that the above described structure which is illustrated. in the drawings is susceptible of variation within rather wide limits and that I desire to comprehend within my invention such modificatons as come within the scope of the claims and the invention.

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

1. In a printing machine, a printing roll, a paper supporting roll having a resilient cover fixed thereto, said paper supporting roll being adapted to support paper against said printing roll, and means selectively operable to" drivingly connect said paper supporting roll to said printing roll to be driven therefrom. at a speed less than the speed of said printing roll whereby the impressions of the printing roll occur, during operation, progressively at different places on the surfaces of the paper supporting roll, or to disconnect said supporting roll from said printing roll for driving said supporting roll from said printing roll through paper supported therebetween.

2. In a printing machine, a printing roll, a roll adapted to support paper against said printing roll, and common means for driving said rolls at different speeds to cause said last-named roll to slip with respect to the rear surface of the paper whereby impressions of the printing roll occur progressively thereon, during operation, and a clutch in said last-named means adapted to be selectively operated to disconnect the driving means from said supporting roll.

3. In a printing machine, a roll having a printing plate attached thereto, a roll adapted to support paper against said printing plate, and means selectively operable to cause said supporting roll to rotate at a different speed from said first roll to cause the impression of said plate thereon to occur at different places thereon, or to rotate free thereof, and means to adjust said rolls to vary the pressure between said second roll and said first roll.

4. In a printing machine, a printing roll, a roll having a resilient cover fixed thereon and adapted to support paper against the printing roll, means selectively operable to connect said lastnamed roll to said first roll for rotation at a different speed from said first roll and to slip with respect to said paper or to disconnect said roll from said first roll, and means to adjust said rolls to vary the pressure therebetween and to vary the slippage of said second roll with respect to the paper.

5. In a printing machine, a driven printing roll, paper supporting. roll provided with a fixed resilient cover and adapted to present paper to said printing roll, and means selectively operable to drivingly connect said supporting roll to said printing roll to move at a lower speed or to disconnect said supporting roll from said printing roll,

6. In a printing machine, a driven printing roll, a paper supporting roll, and jaw clutch means adapted to be selectively operated to drivingly connect said supporting roll to said printing roll or disconnect it therefrom for movement independently of the drive thereof.

7. In a printing machine, a driven printing roll, a resilient paper supporting roll, and jaw clutch means adapted to be selectively operated to drivingly connect said paper support roll to the drive of said printing roll or disconnect it therefrom for movement independently of the drive thereof.

8. In a printing machine, a printing roll, a drive therefor, a resilient paper supporting roll, means operable to connect said supporting roll to the drive of said printing roll for rotation therefrom at a different speed, or to disconnect it therefrom for movement independently thereof, said paper supporting roll being adjustable whereby the pressure thereof with respect to said printing roll may be varied.

9. In a printing machine, a printing roll adapted to be driven at a constant speed and adapted to contact paper moving at a constant speed, and means for supporting said paper for contact with said printing roll comprising a supporting roll having a yielding cover and adapted to travel at a speed less than the speed of said printing roll when operatively connected thereto, and a single means for operatively connecting said printing roll and said paper supporting means and for disconnecting them.

10. In a printing machine, a driven printing roll, a resilient paper supporting roll for presenting paper to said printing roll, means for connecting said second-named roll to said firstnamed roll for rotation thereby at a slower speed, and forjdisconnecting it therefrom for rotation independently thereof, and means for adjusting said second-named roll with respect to said firstnamed roll to change the pressure therebetween.

11. In a printing machine, a driven printing roll, a paper supporting roll provided with a resilient fixed cover for presenting paper to said printing r011, means for adjusting said secondnamed roll with respect to said first-named roll to change the pressure therebetween comprising adjustable eccentric bearings, and means selectively operable to drivingly connect said secondnamed roll to said first-named roll for rotation thereby at a reduced speed, or to disconnect said rolls for independent rotation.

URBAN F. GOCHOEL.