US1759520A - Method and article for wiping inky surfaces - Google Patents

Description

y 0, 1930. F. T. PARSONS, JR 1,759,520

METHOD AND ARTICLE FOR WIPING INKY SURFACES Filed March 8, 1928 Frank T. Eats 0115, II.

Quorum;

Patented May 20, 1930 UNITED STATES PATENT; OFFICE FRANK '1. PARSONS, JR., F WASHINGTON DISTBICT OF COLUMBIA METHOD AND ARTICLE FOR WIPING INKY SURFACES v Application filed March 8,

This invention relates to an improved method and article to facilitate the wiping of inkky surfaces, such as on die plates and the The primary object of this invention is the v and smooth paper to effect considerable saving in the cost of the wiping stock, and in the consumption of ink, since with the improved method the ink need not be placed so heavy on the die as when conventional wiping expedients and articles are used.

, A further object of this inventioii isthe provision of an improved wiping paper for removing ink from engraving plates and the like to properly condition the same. I Other objects and advantages ofthis invention will be apparent during the course of the following detailed description.

In the accompanying drawing, forming a I no part of this specification, and wherein similar reference characters designate corresponding parts throughout the several views,

F i re 1 is a fragmentaryview of one wiping ace of the preferred andimproved wip- 85 in paper;

igure 2 is the opposite face of the paper illustrated in Figure 1, which may also be used as a wiping surface for removal of ink I from plates and the like. 7

Figure 3and 4 are views showing the surfaces illustrated in Figures 1 and 2 respectively, with ink as absorbed 'on the roughened or ridged parts thereof incident to the wipigure 5 is a fragmentary sectional view, of an enlarged nature, showing the relation in which the paper o-fFigu'res 1 and 3 cooperate upon a die plate. Figure 6 is a View illustrating. how an embossed wiping paper is used in the improved in operations. 45 T 1928. Seria1- No. 260,120.

method for removal of ink from engraved cyl-- inders, suchas usedin engraving printing ofv postage stamps and the like. v Figure 7 is a reduced fragmentary view of a strip of the improved wiping paper showing certain important structural features thereof. K i In the wiping of flat die plates, such as the die plate E illustrated in' Figure 5 of the drawing, it is conventional to wipethe surface 10 in which t'heengraving cuts ,11 are faced, with smooth calendered paper, with a cloth, or the operator wipes the surface 10 clean with the palm of his or .her hand. In engraving operationsusing a die cylin j der B, having a surface 12 provided with"- engraving cuts 13, it is conventional to wipethe surface 12- clean of ink prior to the engraving operation, by passing a cloth between g the convex surface of the die cylinder B and 7 .a guide roller C. This is customary at the United States Bureau of Engraving, at the present time, where the cylinders B are used 4 for theengraving of stamps. In the United States'Bu'reau of Engraving the wiping cloths are used on both sides from six to ten times, the cloths being laundered. .1 understand that the United States Government has a $500,000 laundry necessary for the laundering of such cloths, and because the cloth 30.

material is of such nature as to sometimes.- pass into the engraving'recesses 13 of the die, the die rollers or cylinders are inkedfar heavier thannecessary.v p

Referring to the improved wiping paper A illustrated in Figures 1 to 5 of the draw-- ing, the same is of absorbent stock, ranging in weight from 25 to 45-poundsper480 sheets of standard 24;" x 36 size. The paper A is furnished in long strips, on rolls, and the same is used for wiping-'onboth sides thereof. 'The paper used is preferably embossed or creped stock, or otherwise manufactured with furrows, ridges,- corrugations, pro]ec tions, .protuberances,-bosses, nebs, on one or both sides thereof, .stu'ck up or pro ecting from the normal major surface. Thus for the paper A illustrated in Figures 1 to 5,

"which is a creped paper, the ribs, or projec-.

tions 25-a're provided in spaced relation on 1 0 one surface or side or face thereof, the same being the face illustrated in Figures 1 and 3, and in en agement with the die plate surface in Figure 5; these ridges, corrugations,- or projections 25 being elevated in peaked form, preferably from the major surface 26 of the said face of the wiping paper A.

inclination thereacross, in an acute angled relation with respect to the longitudinal axis of the stock A, as illustrated by the ridge corrugation, or projecting raised portions illustrated in Figure 7 on the paper A, this diagonal slope of the ribs, ridges, or raised portions-of the stock, A, is illustrated in Figures 1 and 3 as being slightly diagonal cross- 'ances, projections, ridges,

Wise of the stock or paper, in order to more readily wipe the ink from the die plate or cylinder as the paper relatively moves with res ect to the cylinder or die plate.

n the opposite side of the stock A from the surface 26, is amajor surface 30, having bossed, roughenedfnebbed, or raised projections 32, extending transversely across the stock A in series or rows which are diagonal to the longitudinal axis of the stock, in the diagonal relation illustrated in Figures 2 and 4; it being understood that the ribbed or bossed portions 32 are arranged in spaced rows to provide a ridged or corrugated-like effect which is efficient in removing ink from the engraved side of the die plates.

In Figures 1 and 2 I have shown the opposed sides pf the stock A, and in Figures 3 and 4 respectively shown the opposed sides of the stock A after having been passed over inked surfaces, showing the ink in heavy lines, caught or absorbed on the protubercorrugations, or bossed portions 25 and 32.

As illustrated inFi'gure 6, the stock D may be used, of an "embossed nature, having the opposite sides thereof recessed or bossed, or

otherwise formed .to provide roughened surfaces which may catch the ink on the cut surface of the die plate or cylinder, as the case may be. In the particular embossed paper D, the same at one side has the projections 35, and at the other side-has projections 36, with valleys or recesses between said projections. The projections 35 and 36 may be ridges, ribs, corrugations, protuberances, nebs, or other projections. j

The passage of thewiping paper over the surface of the die may be effected by a relative movement of either the die or paper, as in p, conventional wiping operations. How- .from engraving plates andthe like comprisever, the paper must be sufliciently strong to stand the lateral twist or reciprocatory mo-.

tion to which the saine is subjected during the plate wiping operation, and it is to be noted that the ribs, or projections on the paper do not enter the out recesses of the die plate, and while the paper wipes the plate surface entirely free of ink, the ink does not have to be spread as heavy as is ,ordinarily required in using conventional wipers, such as cloth. In the Bureau of Engraving, for the engraving of stamps, the saving in ink alone it is estimated will amount to $50,000 per year. From the foreging description it is apparentthat a novel method and wiper for the cleansing of ink from die plate surfaces have been provided, which may more efliciently .and with greater economy wipe ink from plate or cylinder surfaces of engraving dies, than can be accomplished with ordinary wiping expedients and methods now used.

Various changes in the steps of the method, and formation of the improved wiping material may be made to the invention without departing from the spirit of the same or the scope of the claims.

I claim: 1

1. The method of cleansing'the ink surfaces of engraving plates and the like which consists in passing over the ink surface a flexible material having spaced projections on the surface thereof in such. manner that the projections only contact the ink surface.

2. The method of removing undesirable ink from inky surfaces of engraving plates,

cylinders, and the like which consists in relatively passing over the ink surface flexible material having a ridged surface of an absorbent nature, the ridges being spaced and the material operating on the inky surface with ridges only in engagement with the inky surface during relative movement of the flexible material over the inky surface. V

3. The method of removing ink from inky surfaces of printing plates and the like which I consists in the relative shifting contacting movement over the inky surface of absorbent paper material having spaced ribs thereon in surface contact at their peaks with the ink surface, the relative movement of the paper overthe ink surface taking place ina direction of movement acute to the lengths of the ribs on the paper. j

4. An ink wiper forengraving plates and the like comprising paper having a surface thereof provided with spaced projections thereon suitable for catchin ink as the paper is passedover an inked sur ace of an engravmg plate, sald pro ections being in the form of the length of the paper in a diagonal rela- 25 vof ridges, and the ridges running crosswise ing an elongated paper strip having a face thereof roughened with projections raised transverse to the normal body surface of the paper, said projections being in the form of ribs extending diagonally crosswise of the strip of paper.

6. The method of cleansing the inked surfaces of engraving plates and the like which consists in passing over the inked surface a flexible crepe like absorbent ink Wiping paper having closely spaced raised pro ections thereon, in such manner that the raisedprojections only will contact with the inked sur- 1 face.

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