US2533834A - Cylinder press embossing and method of producing the same - Google Patents

Description

Dec. 12, 1950 H P OTTO 2,533,834

CYLINDE R EM SING AND METHOD 1= UCI THE SAME Filed Aug. 20, 1947 2 Sheets-Sheet 1 INVEN TOR. Hans P. 0170 CELxQM-AW Affy Dec. 12, 1950 H. P. OTTO CYLINDER PRESS EMBOSSING AND METHOD OF PRODUCING THE SAME 2 Sheets-Sheet 2 Filed Aug. 20, 1947 Fig 4 INVENTOR. Hans P. 0170 fix.

Fig 5 AWy latenterl Dec. 12, 1950 CYLINDER ERESS EMBOSSING AND METHOD 09F PRODUCING THE SAME Hans Peter Otto, San Francisco, Calif.

Application August 20, 1947, Serial No. 769,753

1 Claim. 1

This invention relates to improvements in cylinder press embossing and method of producing the same.

The principal object of this invention is to provide means for embossing sheets of paper and like material on a cylinder press in contradistinction to embossing ordinarily accomplished on an embossing machine where the male die moves longitudinally or vertically against the female die to effect an embossing of paper inserted therebetween.

A further object of this invention is to provide means for embossing wherein exact registration may be accomplished on a high speed press.

A still further object is to provide means whereby prepositioned intaglio plates are used to create the matching male die in a fiXEd position and in registration therewith.

Other objects and advantages Will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Fig. i is a fragmentary top plan view of a base having intaglio plates secured thereto and a portion of an overla positioned on the plates.

Fig. 2 is a perspective view of a cylinder plate having strips of material pasted thereon and showing the manner in which these strips are peeled from the cylinder to leave a thin layer of split paper on the cylinder.

Fig. 8 is an enlarged fragmentary perspective view with a portion of the cylinder plate showing the male die formed thereon.

Fig. 4 is an enlarged cross sectional view of the cylinder plate and the male die as the same is formed when rolled over the intaglio plate.

Fig. 5 is a view similar to Fig. 4 showing the die forming an embossing in a sheet of paper.

Fig. 6 is a fragmentary portion of a printed sheet showing in dotted lines the area to be cut out.

Heretofore in the art of embossing it has been (Cl. Mllei012) fore, is embossed at one time, thus relieving the m excessive strain upon the press and the dies above described.

Also, with this method it has been impossible to secure proper alignment of embossing plates on the curved surface of the cylinder so that the plates would be in exact registration with the sheet of paper being run through the cylinder press.

Applicant has devised a means whereby he can locate intaglio plates upon the base plate of the press in exact alignment with any predetermined position on the sheet to be embossed, and has also devised means whereby after the plates have been properly located a male die may be formed through an offset process onto the cylinder plate carried upon the cylinder of the press, which male die will then be in exact registration with the intaglio plate or female die so that paper passed between the two dies will be embossed at a, predetermined position on the plate.

In the embossing of labels, for example, it has been customary to print a group of labels, i. e., twenty labels, upon a sheet of paper and to then cut the sheets, thereby producing twenty individual labels, and to then feed these individual labels through an embossing machine. This is an expensive and very slow procedure.

With applicants method or procedure it is possible to emboss at one operation the entire twenty labels and inasmuch as a rotary press is a speedy press it is possible to turn out large quantities of sheets of embossed labels, or any other embossed matter, at a greatly reduced cost necessar to cut paper to a certain size "and arrange it on the press in a certain position so that it will be fed into alignment between male and female embossing dies whereby when the two dies are pressed together the paper therebetween will be embossed.

This type of embossing requires ver heavy pressure inasmuch as the entire squeeze on all of the letters, or in other words the stretching of the paper over the entire area of the die, takes and with greater speed and accuracy.

Applicants invention first consists in mounting a plurality of intaglio plates 5 upon a base 5, which base is generally referred to in the trade as a patent base, and this base is in turn later mounted for reciprocating movement on the bed of a rotary press.

These plates 5 are initially positioned b adiustable hooks l in approximately the position they are to assume.

A sheet of paper which is to be embossed is Qhe plates are now adjusted beneath the g sheet H until the areas H. of the plates are in registration with the cut out portions of the sheet ll. This might be termed a rough alignment of the plates.

The base with the plates thereon is now placed in the press where the plates will occupy the normal printing position.

Upon the cylinder of the press is positioned a metal plate curved to correspond with th outer surface of the cylinder. Up on this plate ,I pastea layer of parallel and abutted gumined paperstrips i3, and after the entiresuriace of the plate has been covered all ofthestrips aredampened so as ,tocause an even adherence free of any high'spots. 7

.These strips-are ,then allowed to ,dry for a short interval and are then peeled from the cylinder, ,as shown at A in Fig. 2. This peeling operation splits the paper strips, thus leaving a thin layer of paper or upstanding ,fibers ,l l whichact as a tooth .for the embossing cement to he later applied.

An ink roller is now inserted in the press, the plates 5 inked and .an impression taken on a duplicate of the paper whichis to be embossed,

thus causing an over printing on the sheet which .Wiill determinehowclo sely the registrationof the plate on the base .will corneto-the paper to be embossed.

Each plate is now individually moved as indicated by the .over p'rinting so that the plate will be moved intocloser registration.

Furtherf printed sheets are run through the pressand an over-printing repeated until all of theplates on the press are in absolute registrar .tion. ,Assoon asall of the plates have been properly positioned .the press is run with the plate it in contact with .theplate's ,5 so thata printing is effected onth'e peeled strips I 3, thusmarking the areas where the maleembossing dies are to be formed.

,1 now apply anjembossingcementto thepeeled strip surface 'ldof'the cylinder l0, spreading the same fairly evenly over the printed areas, as shown at .15. v

I then place a thin sheet of paper on the a cylinder, suchasan onion skin paper, overlying the cement and thenrotate the cylinder in contact with the plates on the base, which action causes the cement and the paper covering to be imbedded into the intaglio of the plates and to thus form a curved male die which will be in exact registration with each plate forming a female die. 7

The thin sheet of paper placed over the cement prevents the cement from entering the intaglio and sticking thereto and also serves to slow up the hardening'ofthe cement.

A sheet of printed paperwhich is to be embossed is now run through the press to ascertain whether'the positioning of the plates and the 4 dies are in exact registration with the printed matter on the sheet. If not, the plate out of registration may be slightly moved and a second impression taken while the cement is still soft.

Assuming now that all of the plates have been positioned in perfect alignment and the dies formed, the press is allowed to stand for approximately a half hour so that the cement will be thoroughly hardened.

Thepaper overlay and the cement between the male die areas on the plate I0 is then cut away, as shown at B in Fig. 3, thus leaving raised male dies adhering to the' surface of the plate,.

as shown in Fig. 3 4 and 5.

In Fig. 5 I -have shown a sheet of paper C as being embossed between the plate 5 and the die formed upon the plate It, the rolling action takingplace from left to right, and thus stretching but a small portion of the paper at a time.

The press may now be runat full speed with the result that each and every sheet will be accurately embossed with clean-cut lines and in perfect registration. 7 i

It will thus be seen that Ihave produced a method of embossing which will accomplish all of the objects above set forth.

It is to be understood that the former" my invention herewith shown anddescribed is to be taken as a preferred example of the same and that various changes relative to the material siz e, shape and arrangement of parts may j be resorted to without departin from the spirit of the invention or thescope ofthe subjoined claim.

What is claimedis:

and in cross section in Figs.

That method of producingon'a press having a V reciprocating base and acooperating rotary cylinder mating embossing dies which consists in first producing an intaglio plate corresponding to the embossing desired, securing said pla'te on the press base, coating the press cylinder with strips of gummedpaperand allowingthe same to adhere to thecylinder,stripping the paper from the cylinder whereby to leave a portion of the gum on the cylinder to form a tooth, applying soft cement on ,thegummed surface of the cylinderin conformable relation to the plate, operating saidpress and thereby causingt'he cement to fit into the intaglio of said plate, and allowing s id ment to h en- HANS PETER OTTO.

REFERENCES CITED The iollowing references are of record in the file of this patent:

UNITED STATES PATENTS OTHER. REFERENCES Commercial Engraving andPrihtin-g by Hackleman; Commercial EngravingPublrCo Indianapolis, Ind. (1921), pages 291, 596,597 and 598. (Copy in Div. 17.) r I

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