US1560861A - Production of paper and cardboard blanks and sheets in imitation of handmade paper and cardboard blanks and sheets - Google Patents

Description

Nov. 10, 1925- 4 1,560,861

C. RIVAGE PRODUCTION OF PAPER AND CARDBOARD BLANKS AND SHEETS IN IMITATION 0F HAND MADE PAPER AND CARDBOARD BLANKS AND SHEETS Filed Aug. 30, 1923 Fig.1.

Fig 2 INVENTOR awo H TOIEIYHY Patented Nov. 10, 1925.

UNITED STATES PATENT OFFICE.

CHARLES RIVAGE, OF PARIS, FRANCE, ASSIGNOR TO UNITED STATES ENVELOPE v & (30., OF SPRINGFIELD, MASSACHUSETTS.

PRODUCTION OF PAPER AND CARDBOARD BLANKS AND SHEETS IN IMITATION OF HANDMADE PAPER AND CARDBOARD BLANKS AND SHEETS.

Application filed August 30, 1923. Serial No. 660,237.

To all whom it may concern:

Be it known that 1, CHARLES Ritalin, a citizen of the Republic of France, residing at Paris, France, have invented a new and useful .lmproi-ement in the Production of Paper and Cardboard Blanks and Sheets in Imitation of Handmade Paper and Cardboard Blanks and Sheets, of which the following, taken in connection with the accompanyiug drawings,=is a specification.

The present invention relates to the production, from previously-manutactured paper or cardboard stock, of sheets and blanks that imitate the handmade paper and cardboard sheets and blanks.

As is well known, sheets of vatpaper, or hand-made paper, made in a hand-mold or press, have thin irregular and frayed edges, commonly known as deckle edges. Consequently, the deckle edge on paper or cardboard has come to be considered a mark of superior quality, denoting hand-made sheets and blanks a11d the object of the present inventionis to produce these deckle edges in sheets and blanks made from previously manufactured paper or cardboard stock, thus to simulate the appearance of hand-made sheets and blanks, whose deckle edges are the result of the vat or hand-mold process of paper-making.

Other and further objects of the invention will be apparent from the following detailed description thereof, reference being had in this connection to the accompanying drawlugs, which show, by way of example only, a mode of carrying out the invention, and in which drawin s,

Fig. 1 is a p an view of a plate of steel, or other suitable material, made use of in the process, and

Fig. 2 is a "fragmentary section of said plate, on an enlarged scale.

Like reference characters refer to like parts in both figures.

According to the invention, the plate 1 has formed thereon a plurality of ribs 2, 2, each of said ribs being of broad-based triangular section, as shown in Fig. 2. Said section presents a relatively flat or blunt apex, and each rib 2 at said apex presents a sinuous edge or ridge 3, which is come spondingly flat or blunt.

The ribs 2 can be formed on the plate 1 in any suitable manner; for example, said plate can be covered with bitumen, or other protecting material, at the places where the ribs are required, and then said plate can be sub jected to the biting action of any suitable acid to eat away the metal in the areas not so covered. These operations can, of course, be repeated until the ribs 2 have attained the desired height, and the inclination of the sloping faces of said ribs can be corrected, it necessary, by means of a milling cutter, or in any other suitable manner.

. It is to be understood, of course, that in the formation of the ribs 2, 2 the sinuous edges or ridges 3, 3 thereof are made to fix the limits for the outlines of the several blanks or sheets desired to be produced from previously-manufactured paper or cardboard stock; as herein shown, the ribs are arranged in a pattern designed to produce a plurality of dilterent-sized rectangular sheets or cards, but obviously, any other arrangement or pattern of the ribs may be employed, to con-- form to blanks and sheets of any desired shape or size.

In carrying out my process, I employ the plate 1 with its blunt. ribs 2, 2, above described, in conjunction with an ordinary paper rolling-mill or calendering machine, not shown, such a machine, as is well known, providing a pair of cooperating rolls or cylinders adapted to exert pressure, to any desired degree, upon material that is moved progressively between said rolls by their retation. A suitable number of layers of paper or cardboard stock (which, if desired, may be moistened) are disposed in contact with the ribbed face of the plate 1, the whole being then entered between the rolls of said machine, and said rolls being adjusted to give a suitable pressure. The rotation of said rolls eii'ects the travel of said plate and stock between them, thereby progressively subjecting said stock in the areas corresponding to the ribs 2, 2 to heavy pressure, such pressure at any given instant being concentrated at those portions of said ribs which at said instant happen to lie in the plane that contains the two roll axes. As the movement continues, every portion of each rib has this pressure concentrated Cii stock, in the vicinity of said ribs, is-sub-. jected to a pressure that gradually increases;

toward the sinuous irregular ridges 3, 3,

that form the dividing lines between. the:

areas a, a. This gradually increased com.- pression causes the stock to become gradually thinner towards the apices of the ribs,

the latter being. of sufficient flatness or bluntness to prevent actual cutting of the stock, but the pressure exerted thereby being sufficient to gradually reduce the thickness of each layer of stock in the areas of pressure and to so crush' said stock, opposite the sinuous ridges 3; 3-, as to cause, or to permityits breakage along lines corre sponding approximately to said ridges.

The resulting blanks or sheets have the thinned irregular feathery edges corresponding to the deekl'e edges ofvat or handmade paper, and said blanks or sheets, of any desired form and size, can constitute, for instance,- sheets of Writing paper or blanks suitable for the manufacture of envelopes and the like.

I claim,- 7

1. As a new article of manufacture, a paper blank or sheet having edges or margins in imitation ofthe edges or margins of a handmade paper blank or sheet, and distinguishing from said handmade product by its-formation from already-manufactured paper stock, with the margins of said blank or sheet crushed and compressed to a thickness less than that of said stock.

2. As new articles of manufacture, paper blanks or sheets in imitation of handmade paper blanks or sheets, and distinguishing froni' said handmade product by being formed by the division of already manufactured paper stock into predetermined-areas, with surrounding compressed marginal portions forming lines of cleavage or breakage between said areas.

3. The herein described improvement in the production of decide-edged sheets or blanks from manufactured paper or card-, board stock, which consists in subjecting said stock, in iiredeterminedareas thereof, to a pressure suilicient to permanently compress it in said areas to less than normal thickness.

The herein described ii'nprovement in the production of deckle-edged sheets or blanks from,,nianufactured paper or cardboard stock, which consists in passing'said stock between pressure rolls, and subjecting said stock progressively during said passage to crushing and thinning pressure in predetermined areas thereof.

5. The herein described improvement in the production of deckle-edged sheets or blanks from manufactured paper or card board stock, which consists in passing said stock between pressure rolls, and subjecting 'it,.duri'ng sa-idpassage, to areas of excessive pressure adapted to permanently decrease the thickness of the stock in portions corre: sponding to said areas.

6. In the production of deckle-edged sheets and blanks, the improvement Which consists in subjecting previously-manufantured paper or cardboard stock, in predetel-mined areas, to crushingpressure, by progressive passage fl'ativis'e between (calend'ering rolls, in conjunctionwith a flat die sheets and blanks from manufactured paper or cardboard stock, the improvement which consists in thinning said stock,-by crushing pressure applied to predetermined portions thereof in the progressive passage of said stock between calendering rolls, and b kingsaid stock along said crushe'd portions into sheetszand' blanksof the desirech areas.

9. In the production of dec'kle-edg'ed sheets and? blanks from ma'mifactured paper or oardboardstock, the improvement which consists in providing a platehaiving raised portions of blunt? triangular cross I sectioii in surroun ding: relatioir to areas corresponding in shape and size to the desired sheets and blanks; passing. said plate fiatwise', in conjunctionwith a plurality of layers of stock superposed thereon? between pressure rolls, whereby to crush and compress said stock in the portions thereof overlying said'rai'sed portions of the plate, and breaking apart the thus treated stock on the lines of maximum pressure correspondiug to the apices of said blunt triangular raised: portions.

'lheforgoing specification of myProcess for the production of'pape'r imitating the: hand-made paper, signed by me this 14th day of August, 1923;

- ennui-ins RIVA'G'E.

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