US1736034A - Printing apparatus - Google Patents

Description

1929. J. M. COOPER 1,736,034

PRINTING APPARATUS Filed Oct. 26, 1923 2 Sheets-Sheet l Nov. 19, 1-929. J. M. COOPER 1,736,034

PRINTING A-PPARATUS Filed Oct. 26, 1925 2 Sheets-Sheet 2 Fig. 4

' I |NVEN12 (%zazgzz7 lanuy;. 07 MM Patented Nov. 19, 1929 warren stares J'EHANGIR' MANECKJI COOPER, OF BOMBAY, INDIA PRINTING APPARATUS Application filed October 26, 1923, Serial No. 670,831, and in Great Britain October 28, 1922.

My invention relates to theiprint-ing of patterns or designs upon .cloth, paper or any other material and more particularly to printing and the like operations such as coating,

varnishing, etc., by the process described in my Patent No. 1,359,034, according to which the printing is produced from a metal color or ink-carrying cylinder having a plain,

smooth, hard surface, the pattern or design 0 being carried by another cylinder, the material to be printed on being passed between the said two cylinders.

The machine forming the subject matter of my present invention is provided, in addition to the smooth color, or ink-carrying, cylinder and the pattern cylinder, with means for conducting the web of material around the pattern cylinder, and a color supply duct, the color being in direct contact with the color cylinder without color transferring rollers.

A second impression cylinder may be provided by which to print another web of material with the reverse ofythe pattern, and means for printing from a pattern or design longer than the circumference of the pattern cylinder.

Inthe frame A to rotate in arings a is mounted the color cylinder A, an below in movable or adjustable bearings 71, the pattern cylinder B,,which can be set at any distance from, or to bear with any desired pressure against,'the color cylinder A. The bearings bmay rest upon screws b, as shown, or on levers or eccentrics by' which they can be raised or lowered as required.

the same,

preferably by helical gears to prevent backlash, their peripheries running at uniform surface speed with each other.

Brackets C attached to the frame A carry 59 aroller 1) upon which the material E to be The invention will be more fully described Fig.2 an end.

. sion of the material to be printed 1 weighted roller The cylinders A and B are geared together, i

with

printedis wound. A winding-on roller G is mounted below the roller D driven by a chain or band from the pattern cylinder B with a slip pulley g to compensate for the gradually increasing size of the roll and maintain the speed like that of the surface of'the pattern cvlinder and thereby keep an even tension on the material 1*]. 'This arrangement is essenbec'ause there must be proper and even tension on the material in its entire traverse through the machine from D toG.

A series of guide rollers H, H H H3 are" provi dedbetween the roller D and the pattern "tial to obtain\successful results in printing the cylinder A, and also that when printing with tacky printers ink is done the tendency of th'e cylinder A to smear the material by 'liftin'g i-t towards' itself will be checked. The

roll H as well as the others may be scrimp rolls to put tension along the width of the material and to smooth any creases out of the material before reaching the cylinders A, B. The variation of the length-wise tenon is effected in any well-known manner, for instance by a 1 H bearing on roller H The present known method of inking or colorin the printing surface employs a separate in -duct or color-reservoir, one or more intermediate rollers to transfer the ink 'or color from the duct to the distrib ting rollers, and distributing rollers to distri ute the ink onto the printing surface. In place of the above separate duct, the duct is formed in my machine directly onthe printing surface.

- The supply'of ink or color being thus directly on the printing surface in my machine, the transferring rollers are entirely dispensed with. Furthermore,one roller is sufficient tov apply the ink or color. directly cooperating types of color are thus more efliciently spread.

the printingsurface. Moreover, certain I An ink reservoir orduct is formed by a ,film producing cylinder-K adjacent to and.. substantially in contact with the cylinder The surface of the cylinder K at the point of or plates k are fitted to and pressed against the ends of the cylinder A and cylinder K .to

form the ends of the ink reservoir,and further brackets or plates maybe inserted at in tervals to provide reservoirs for different colors. As the cylinder A rotates, a thin film of ink or color, of any desired degree'of face. by the cylinder K. The latter is mounted in adjustable bearings k by which it can be moved toward and away from the cylinder A to regulate the thickness'of the film-of ink or color carried by the cylinder A. The cylinder K as shown is driven from the cylinder A by a worm gearing L atla greatly reduced s eed. 'A wiper k is applied to the cylinder to prevent ink' or color being carried over the. top of the same. I

To prevent dust or fluif from being picked up from the material E by the ink cylinder A, a wiper M (Fig. 3) maybe applied to the latter with a trough m to collect any surplus ink that is removed.

f The printing of the pattern absorbs orremoves part of the color from the. color cylinder A thus leaving-the color thereon as a 1 reverse or negative pattern, and this pattern can be imprinted on to another fabric as a adjustable bearings behind the color cylin-' reverse pattern thereon. A plainsmooth im ression cylinder N, (Figs. -1' and 2) prefera ly with a resilient surface, is mounted in der A over which impression cylinder a sec- "that on E.

a the pattern cylinder. B, an endless band P (Fig. 3) of rubber; thin metal, celluloid,v

0nd fabric E is passed, this-fabric being held taut'by an well-known suitable means not shown in t e dr wing.v Thus, two separate webs of material may be printed simultaneously, the patternlon E being the reverse of Where a be printed is longer than the periphery of i paper, or other suitablev material, may be employed to carry the pattern. Or, the pat-.

tern itself, .if it is a material such as lace orembossed fabric, may beformed intoan enda less band.- A guide roller. ;0 is fittedto carry the pattern band- P. -The latter is assed round the roller p and pattern cylin er B,

and the fabric to .be printed passe s'betweenthe pattern band and the color cylinder ,The guide roller 12 is mounted in adjustable bearings-and on adj-ustablebars to accommodate bands of varying length. To uide the pattern band 1? straight overthecylmder I thickness, is evenly distributed over its surr I 1 claim as my invention pattern or repeat of a pattern to B, the roller p is made with inclined flanges p, and the band P is kept slack so that should it tend to move laterallyin either direction,

it will slidev down the flanges by its own The machine ma also be adapted to do" duplex printin wit exact re 'ster and from one pattern cyllnder by applying inkor color to the latter in whicp case the pattern cylinder may be an eng aved cylinder of gelatine or rubber or the like, or even of metal. This is accomplished as indicated in Fig. 1 by two cylinderslK and 1A, which form nges.

the two sides of a color duct similar tofthat formed between the two cylindersv A and K.

Cylinder 1A. is supplied with a uniform film of color, in thesame manner as c linder A, and this color istransferred to e pattern on cylinder B. I

The'principleof my printing rocess having been explained inmy. atent No. 1,359,034, it is unnecess'a to-give any further details concerning t at process 'exce t as'to mention that the cylinder B pattern which may be secured to by an adhesive, or otherwise. a

The material to be printed -0n is drawn carries its surface from the reel by frictional contact between the \cylinders A and B.

- When printers ink. (oil color) is used, the

printed material E may "be wound direct onto a reel,-b ut.when the ordinary calicocolor is used, the cloth is firstpassed over dr ing cylinders as now in general use.

arious changes m'constructlon and arrangement ofparts will'be' evident to those' skilledin the art, as well-as various additions and combinations of my new printing machine, and the modificationsshown with the same. Therefore, it is to be understood that I myinvntion is not limited to the specific forms shown but is to be considered in the light of the prior art taken in connection with the appended claims. 3 1

1. In a printing machine, in

film producing cylinder maintainng in direct contact color cylinder.

with the surface of 'said 2. lmaprinting machine, in combination Ill) said color cylinder a supply of .color .with a rotatable color cylinder, a continually I rotating adjustable film producin .cylinder maintamingwith said lcolorcylin er a supply of color in direct contact ace of said color cylinder.

with-a rotatable color cylinder, a continually rotating filmf producing cylinder rotating in the same direction as said color cylinder,

thereby continually producing a uniform with the sur j 12s... 3. In a printing machine, in "combination y cylinder adjacent to and with said color cylinder," said two cylinders a rotatable color -on said film producing second material 11. In a printing machine,

maaosa smooth film on the surface of said color cylinder.

.4. In a printing machine, in combination with a rotatable color cylinder, a continually rotating film producing cylinder adapted to contact with thesurface' of said color cylinder, thereby maintaining a supply of color directly on said color cylinder, and adj ustable bearings for said film producing cylinder.

v 5. In a printing machine, in combination, a rotatable color cylinder having a smooth surface, stationary bearings for said color cylinder, a rotatable pattern cylinder, adjustable bearings for said pattern cylinder, a smooth film producing cylinder for distributing color on said color cylinder in a uniform film, said color and film producing cylinders forming together a color supply duct.

6. In a printing machine, in combination with a rotatable color cylinder, a continually rotating film producing cylinder adjacent to and adapted to contact with said color cylinder, said two cylinders forming together a color suppl duct in direct contact-with said color cylin er, and means for rotating said film producing cylinder in the same direction as said color cylinder.

7. In a printing machine, in combination, cylinder, a film producing cylinder adjacent to and adapted to contact with said color cylinder, said two cylinders forming together a color supply duct, and

means or rotatmg said film producing cylinder in the same direction as, but at slower said color cylinder.

film producing speed than,

8. In a. printing machine, a rotatable-color cylinder, a

forming together a color supply duct, and means for rotating said film producing cylinder in the same direction as, but at a diiferent speed from'saidcolor cylinder. 7

g 9. In a printing machine, in combination, a rotatable color cylinder, a film producing cylinder adjacent to and adapted to con act with said color cylinder, said two cylinders for rotating said film producing cylinder, and a wiper to prevent color from passingaround cylinder. .'-I V 10. The method of printing, comprises. applying color to a smootliysurface, then passing said surface into contact with the material to be printed, while the material is held under tension -bothlengthwise and crosswise against a pattern, so that part of the color is transferred from said surface ,to the raised portion of said material and then passing said surface into contact-with a.

second mainder of the color from said surface, whereby the reverse pattern is prmted on. sad

in combination,

adapted to contact material adapted to remove the. re-- a color cylinder, means to apply a uniform film of color to said color cylinder, a pattern cylinder, means to pass material to be printed between said pattern cylinder and said color cylinder, a smooth surface cylinder, adjustable bearings rial between said smooth color cylinder, so as to print on said second material a design the reverse of that printed on the first material; I Y

12. In a printing machine, in combination, a color cylinder, means to apply a uniform film of color to said color cylinder, a pattern cylinder, means to pass material between said color cylinder and said pattern cylinder, and means to apply color to said pattern cylinder to simultaneously produce impressions on both sides of the material to be printed in exact register with each other. I

for said smooth surface cylinder, and means to pass a second matecylinder and said 7 13. In a printing machine, in combination,

a color cylinder, adjacent to and substantially in contact with said color cylinder, a color duct formed by and between said cylinders a. attern cylin der, means to pass material to e printedbetween said pattern cylinder and said color cylinder, and means to hold the material to be printed under uniform tension lengthwise and crosswise to prevent the portions not raised by the pattern from coming into contact,with the color cylinder. p

In testimony whereof I atfix my signature. JEHANGIR MANECKJI COOPER.

combination,

' forming togethera color supply duct; means i a film producing cylinder

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