US1058040A - Apparatus for cleaning printers' rollers. - Google Patents

Description

' aw QMM S. ORUMI". APPARATUS FOR CLEANING PRINTE OLLBRS.

A'PPLIUATION pump JUNE 22,

1 Q5840 Patented Apr. 8, 1913.

TE sA'rps A'rn Barnum. carrier, or new YORK, N. Y., ASSIGNOR' re rnr: CRUMP conrranr, or new YORK, n. Y., A qoaroaarron or NEW roux.

Specification of Letters Patent.

Patented Apr. 8,1913.

Application filed June 22, 1912. Serial No. 705,189.

To all whom it may concern:

Be it known that I, SAMUEL GRUMP, a citizen of the United States, and a resident of New York city, in the county of New York and State of New York, have invented certain new and useful Improvements 1n Apparatus for Cleaning Printers Rollers, of which the following is a specification.

The invention relates to improvements in 1Q apparatus for cleaning printers rollers, and .bypreference I embody my invention in a printing press as an attachment thereto so as to enable the effectual automatic cleaning or washing of the ink distributing and form rollers, as well as the form itself when de-' sired, while'the same are on the press and driiien by the press operating means. E%y invention is based on the conception of c caning all of a train of rollers of a press 3Q while they are on the press and whether they be many or few," simultaneously, quickly effectually and with the leastpos sible added expense to the cost of manufecturing the press. Sid The operation or method of utilizing my invention is based on t e principleof transferring the color or int from one roller to another in series through the train of rollers .to a final draw-off roller, preferably of 80 printers roller composition, from which the color is removed by a scraper held againstthe same. The roller to which. the scraper is applied being constantly deprived of ink, will become the point of delivery for the ink from all the other rollers in the train, and gradually and in an almost incredibly short time all the ink on the rollers will transfer to said final roller and be removed, all of the rollers on the press becoming thoroughly cleansed and also dried of the kerosene or other solvent which I will pour on the rollers durin the cleansing operation for, softening the ink. When the form rollers are left in contact with the form during the cleansing operation, the latter, then being a part of the train of transfer surfaces, will also become effectually cleaned, the ink therefrom transferring to the rollers which are constantly drawn from by the roller to which the scraper is applied.

My invention pertains more particularly to a novel scraper blade to be applied to the draw-off roller and to special means for supportin and coacting with the blade, and it genera 1y speaking my invention resides in certain improvements hereinafter described on the apparatus shown in Letters Patent of the United States heretofore granted to me, to-wit, Nos. 954,379 dated April 5, 1910 and 976,155 dated November 22, 1910.

I have preferably used printers roller composition in the manufacture of the drawofi' roller to which the scraper-blade is applied, and I have found that it is almost printers roller composition roller or other yielding roller suitable for the purpose, having an exactly true surface throughout, but that, on the contrary, even with the exercise of great'care in their production, the drawoff rollers have possessed undulations hardly perceptible to the eye, but which prevented the heretofore known scraper blades from removing all of the ink and solvent therefrom. Unless al'loftheink and solvent are'75 removed from the draw-off roller during the cleansing operation, the rollers of the press do not become cleaned to the extent demanded. I have, therefore, in the present invention sought te provide a new construction of scraper to be applied to the draw-off roller, and one which, regardless of the undulations present in the roller, will effectually remove all of the ink and solvent therefrom, thus enabling the thorough'cleansing of the rollf ers of the press.

The invention will be fully understood from, the detailed description hereinafter presented, reference being had to the accompanying drawing, in which:

Figure 1 is a vertical longitudinal section through a portion of a printing press equipped with the features of my inventionyFig. 2 is a vertical transverse section through a rock-shaft or roller carryingthe scraper-blade of my invention and equlppcd with means for enabling the proper controlf and operation of the same, and Fig. 3 is front elevation, partly broken away,'of the roller shown in Fig. 2 and parts carried thereby.

In the drawings, 10 designates this usual form-cylinder, 11 the impression-cylinder, 12 the ink-font, 14 composition form-inking rollers, 15 distributing rollers, 16 composi- 1 tion rollers in the train of said distributing rollers, and 17 an oscillatory roller of usual character for transferringthe ink from the font 12 to one of said rollers 15, all of the rollers mentioned, as well as the form cylin- 1 der 1% and. liTlPTQSSlOll-Cj/llllllfifl? 1i, being usual 1 suitable consti'nclion and arrangement. 5

The features of my invention and which I apply an addition to the press are n rlrawmft' roller LB and s roller or rm 1 l9 and the parts mounted said shaft cons prising a series of arms cerrying'my flexible scraper-blade 21, a, series of springs 22 independently acting agonnst said arms 20 and a series of stoparms 23 which are utilized at the proper time to hold the arms 20 and blade 21 in their inoperative position illustrated. by dctted'lincs in Fig, 2, the solid lines in 2 representing; the operative position. oi the scraper-blade W and its no acting parts. The operative osition of the scraper-blade21 and'draw-o"? roller 18 for cleaning the press is shown in Fig. 1.

The arms 20 are, each in itself, rigid throughout and each of said arms is formed with a ring or collar 24 closely encompassing but free on the roller 01' shaft 19. Each of the collars 241 has laterally projecting arms 25, 26 which serve to space them from Substantially corresponding collar-s or bands 27 carrying and being integral with the stop arms 23, which alternate with the arms 20, as shown in Fig. 3. The arms 26 also serve as bearings for the lower portions of the springs 22 which are flexed around the" shaft 19 and confined in part by said arms 26. The arms 20 in their upper portions are ofgoose-ncck formation and provided with upwardly inclined l1eads28 slitted laterally to create jaws for receiving the blade 21, and said 20 are providedabopposits sides with laterally extending pins 29 against which the upper ends oi the springs 22 are flexed to enable them, when the arms 20 are otherwise released, to turn arms and the scrapei blade 21" from their ino erstive position, shown by dotted lines in Fig. 2, to their operative position illustrated by solid lines in Figs. 1 and 2, thereby setting the edge of the scraperblsde 21 against the dravwod' roller 18.

The collars or bands 27 of the stop arms are feathered on the shaft 19 and also fastened thereto by screws 3O,

and said arms are made use of for turning the arms 20 from their open stive to their inoperative position and maintaining them at such inoperative posi tion. The springs 22 normally press against the pins 29 t o turn the arms 2!) forwardly iLOV/H1Ciil18 roller 18 and the arms on llic naming of the roller or shaft 19 to client that result are cuiised to move against the pins at the sides llllll opposite to those engaged by the springs and thereby in opposition the force oil said springs turn the arms upwardly to car the blade from the roller 18, llpon :tation of in s directhe shaft or roller 19 downws;

tion toward the roller 18, the arms turn from the pins 29 and allow the springs 22 to turn the collars 2% on the shaft 19 and move the arms 20 toward the roller 18; The dollars 2? are formed with cars 31 through which ins 32 are passed with their ends projecting laterally beyond the collers, as shown in Fig. 3, and servin as bearings to confine the lower portions 0? the springs 22 against the shaft 19, the pins 32 tbu s cooperating with the arms 26 in maintaining the springs 22 inoperative relation to the other "features of the attachment.

The shaft or roller 19 may be turned downwardly in s direction toward the roller 18 manually or by any suitable means, and saidshaft or roller 19 may be given a reverse movement to carry the stop arms 23 against the pins 29 of the arms 20 manually orby any suitable means.

The drawbfi roller 18 is preferably mounted between a pair of pivoted Arms 33 "so that it may be free from the adjacent -,roller 15 when the press is in operation for printing purposes and it is not desired to clean the same. When, however, it is desired to clean the rollers of the press the roller 18 will. be moved into engagement with the adjacent roller 15 so that the geerwheels 34:, 35 on said rollers may interinesh and the roller 18 be driven frolntbc said roller 15 or the driving mechanism of the press. The roller 18 will preferably be of the printers roller composition, but it may be of some other suitable substance having a yielding surface adapted to take the ink and solvent from the adjacent roller 15 during the cleaning of the rollers of the press.

When the rollers of the press are to be cleaned the ink-supplying roller 17' will be moved out of-operation and the draw-0E 1 roller 18 moved against the adjacent roller 15, and thereupon the shaft or roller 19-will i by the draw-of roller 18 from which thecolor and solvent will be constantly re moved by the scraper blade 21, said color and solvent passing from said blade to a suitable trough 36 and thence to a suitable receiving receptacle 3?. The constant removal. of the color and solvent by the blade 21 enables the roller 18 tobecome a drawotl roller and the point of discharge for all of the ink and solvent from all of the train of rollers or connected inked surfaces. The

rollers of the press will become very ranidl'v while they are omit-he press, and my'inven- I -21 would be the only movable partsof the tion is particularly adapted for this purpose, but the features of my invention are also applicable for use in separate roller-washing machines to which the rollers removed from the ress are delivered, and in such use of my mvention the scraper-blade 21 may be applied directly to the printers roller, but

' preferably it will be applied to a draw-off toward the roller to be cleane roller corresponding with the roller 18 engaged by the printers roller.

In the patents hereinbefore referred to as havin been granted to me is described a flexibe scraper blade. The blade disclosed in said patents is held at its shank portion throughout the entire length of the blade, and hence while flexible in a sense does not possessthe flexibility of the present blade 21 which is held by the spaced apart arms 20 independently acted on by springs 22, whereby said arms 20 become independently yieldable and enable the blade 21 to bend across its width at points along its length at which irregularities of surface of the roller 18 may be presented to the blade. The ethciency of the cleaning attachment is very greatly enhanced by securing the blade 21 to independently yielding'arms s ring-pressed d? The irregularities of surface in the roller 18 are usually hardly perceptible to the eye and apparently non-preventable in -the manufacture of the roller, and a scraper-blade to be efiicient in the cleaning of the printers rollers must be able to delicately and positively conform to the irregularities of surface presentation of the draw oif roller, to accomplish which result is the purpose of my present invention. The blade 21 is very flexible, and it is held at spaced-apart points by independent spring ielding members, so that said blade along te line of its length may yield in sect-ionsfo conform to the surface of the drawofi' roller, or uniformly yield bodily in a direction from the said roller should the irregularity of surface be caused by a strai ht line eccentricity of the composition on tic stock or shaft of the roller, or yield to take changeable slanting line positions should the stock or shaft of the roller not be concentric and parallel with the roller or should the said shaft be concentric with the be permanently in or one ofthe .the surface of the roller:

roller,- but be thrown out of true in its bear I ings b bei worn more at one end than at the ot er en or by the bearin for one end of said shaft being more worn than the bearing-for the other end thereof.

I do not limit my invention to the details of form and construction presented. V

What I claim as my invention and desire to secure by Letters-Patent, is:

1. For cleaning printers rollers, a flexible scraper-blade to extend the length of a roller, a series of spaced-apart arms carrying said blade and independently movable,-

at right angles to the longitudinal plane thereof, and afseries of independent} springs acting against said arms to yieldingly' hold a.

the blade against the roller and permit the' blade to follow the surface of the roller,

2. For cleaning printers rollers, a transfer roller for drawing of? the foreign matter blade to be applied to said transfer or drawofi' roller, a series of independent arms carfrom the printers roller, a flexible scraperj ryingsaid blade, and a series of independent I springs yieldintgly acting against said arms to hold the bla e against the draw-cit roller and permit said. blade to yield and follow 3. For cleaning printers rollers, a transfer roller for drawing ofithe foreign matter from the printers roller, a flexible scrap-err blade to be applied to said transfer or drawoff roller, a series of independent arms car v rying said'blade, springs yieldingly act ng against said arms to hold the blade against the draw-off roller and permit said blade to yield and follow the surface of the roller,-

and means for positively moving said arms in opposition to the'force of said springs to carry said blade from the draw-off roller.

1. For cleaning printers rollers, a transfor roller for drawing ed the foreign matter i from the printers roller, a flexible scraperblade to be applied to said transfer or drawofi' roller, 2. rock-shaft, a series of independent spaced-apart arms freely mounted on said shaft and carrying said scraper-blade a series of springs pressing against said arms for yieldingly applying the blade to the roller, and a series of stops rigid with said shaft and alternating with said arms for moving said arms and said scraper-blade in opposition to the force of said springs to an inoperative position.

Signed at New York city, in the county of New York and State of NewYork, this 20th .day of June A. D. 1912.

SaldUilL canine ARTHUR Minion.

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