US1408633A - Watermarking embossing machine - Google Patents

Description

P. D. PARSONS.

WATERMARKING EMBOSSING MACHINE. AiPLICATlON FILED JAN.7,1921.

. Patented Mar. 7,1922.

[11 V62? lor UNITED. STATES PATENT OFFICE.

'ro sco'rr Puma COMPANY, A CORPORATION OF PENNSYLVANIA.

. WATERMAIR-KING EMBOSSING- MACHINE.

To all whom it may concern:

Be it known that I, PHILIP D. PARSONS,

jected to a drying operation, whereby atrade-mark or other character may be formed in the body of the paper to give it the appearance of water-marking.

Heretofore, in the manufacture of paper articles, such as towels, the trade-mark was embossed on each towel by means of rolls and this was accomplished with the paper in its finished and dried condition and as part of the operation of sub-dividing'and folding it in the making of the towels. The embossing so produced was not always effective and being performed on dry paper material was not sharp and distinct, and moreover occupied more of the surface than was desirable. It has also been attempted to make a proper marking of the paper web as it passes through the paper making machlne by impressing the moist web with rubber dies of suitable character which were intended to densify the fiber and thereby give somewhat of an appearance similar to a watermark, but the use of impressing devices of yielding material was not satisfactory and the marking was blurred and very indistinct and uncertain.

My object in the present invention is to more specifically overcome the objections which have heretofore been embodied in the embossing of the paper by the methods above stated, and this I accomplish by providing the paper making machine itself with metal pressing wheels adapted to act upon the web ofpaper in the act of being dried, so that the densification of the fiber takes place in the configuration or trade-mark word simultaneously with the drying operation with the result that the impressmn produced upon the surface of the paper has all of the characteristic appearances of water-marking in that in those parts impressed, the densification of the fiber gives a smooth, clean finish -making machine.

Specification of Letters Patent. Pat t d Mar. 7 1922 Application filed January 7, 1921.

Serial No. 435,587.

to the design or trademark, whereas the paper web generally is of a more or less open fibrous character having absorbent qualities such as required by paper towels, napkins, etc. Furthermore, owing to the fact that the impress on is formed on the paper by hard metal impressing devices while in the act of being dried, the impression is sharp and clearly defined and no rough usage can eliminate the sharpness of outline from the paper after being fully dried.

W1th the above and other objects in view, the nature of which will be more fully understood from the the invention consists in the novel construction of a water-marking embossing machine, as hereinafter more fully described and do fined in the claims.

description hereinafter,

' Referring to the drawing: Fig. 1 is a side elevation of an embossing machine embodying my improvements and moreparticularly for use in connection with a dryJing cylinder of a paper making machine; ig. 2 is a plan of a portion of the same; Fig. 3 is a perspective View of the means for carrying the embossing wheel; and Fig. 4: is a perspectlve view of a ortion of the perimeter of the embossing'w eel.

2 is the main frame of the machine and in the particular instance is a part of the side frame for the drying cylinders of a paper 3 is a drying cylinder Whlch may be steam and about which the paper web passes in the operation of being dried. Ordinarily, there are a large number of drying cylinders to a paper making machine,'butso far as the present invention is concerned, consideration to more than one cylinder need not be given. Arranged above the drying cylinder 3 and movable toward the same under spring pressure, are embossing or marking wheels 4 of hard material, such as metal, having embossing projecting portions 5 corresponding to letters or other marks to be impressed upon the "paper web as it is conveyed under the said embossing wheels by the drying cylinders 3. The embossing heated, as is customary,

wheels are arranged at intervals apart lon- I gitudinally of the drying cylinder and are supported inia manner to be simultaneously raised out of contactvwith the paper and drying cylinder by hand manipulation, or

into contact with the paper and with any desired degree of pressure, also by hand adjustment, and the details for accomplishmg theseoperations will now be described.

A shaft 7 (made tubular for lightness) is journalled in bearing 6 at each end of the drying cylinder 3, so that it is parallel to the axls thereof and preferably somewhat to one side of the center of the drying cylinder. This shaft 7 is provided with a segmental ar 8 which is engaged by a worm 9 having a vertical shaft 10 and a hand wheel-27 by which it may be rotated. The shaft 10 is journalled in a bracket 11 extending from the opposite portion of the bearing 6. By

rotating the worm 9, the shaft 7 may be iven a rotary reciprocatory adjustment,

lamped at intervals along the shaft 7 are sleeves 12, the same being formed in two parts bolted together at 13 to. provide a clamping action so that the said sleeves 12 move w1th the rotary movements 'of the shaft 7 but at the same time have capacity for adjustment circumferentially thereof to permit adjustment in assembling the machine. Each one of these sleeves 12 support one of the embossin wheels 4 by similar mechanism and it will sufficeto describe one set of this mechanism.

The sleeve 12 is provided with upwardly extending jaws 14 between which is arranged a hinged frame 15 journalled to Sald jlaws on a transverse pivot pin 16. The

inged frame 15 carries at its outer or free end the embossing wheel 4 in such manner that it is free to rotate under the influence of the aper web and d1? cylinder. The rear en of the pivoted rame 15 is provided with leaf springs 17 which rest upon an adjusting screw 19 adjustable in an arm 18 extending from the sleeve 12, said screw being adapted to press upon the springs 17 l for putting them under greater or less tension and in that manner applyin greater or less pressure of the. embossing W eel 4 upon the. paper. 20 is a lock nut upon the screw 19 by which it may be locked in its adjusted position upon the arm 18.

It will now be understood that the embossin pressure desired may be insured-by the a ustment of the screw 19 and the extent of sprin pressure developed by the spring 17 in orcing the embossing wheel 4 toward the paper and cylinder 3, but this is only effective when-the shaft 7 is given .a rotary adjustment to bring the embossing wheel down tightly upon the paper. When the shaft 7 is rotated to lift the embossing wheel 4, the limited degree of oscillation of the frame 15 in the jaws 14 of the sleeve 12 will, after a given amount of pressure has.

been relieved, cause the frame 15 to contact with the metal of the collar so that it cannot fall toward the drying cylinder, and consequently a further rotation of the shaft 7 will act to entirely lift the embossing ting of some resiliency during the embossing operation.

As it is important to maintain the projecting portions 5 of the embossing wheel 4 free from fiber or lint, I provide means for directing an air or other blast u onthe perimeter of the said embossing w eels, and the air may be at ordinar temperatures or heated, if so desired. T e means em loyed for accomplishin the supply of tlie air blast are the fol owing: rrang ed above the shaft 7 and parallel to it is a sup ly tube 25 which is supported in upright brackets 26. This tube is provided with a nipple 24 from which a rubber hose 23 extends, the said hose connecting with a nipple '22 on the pivoted frame 15. This last mentioned nipple 22 is provided with a tubular passage terminating in a blast nozzle '21 which is directed toward the raised portions 5 of the embossing wheel 4. The rubber tube 23 permits of any adjustment of the frame 15 relatively to the s eeve 14 and also permits adjustment of the shaft 7 and the connecting parts without disturbing the fixed position of the air supply tube 25. Instead of air for the blast, steam or other means and even a fine water jet may be employed for keeping the embossing wheel clear of lint, etc. I

In practice, I have found that the embossing wheels 4- are best made of brass as they are easily engraved and,do not rust, and moreover are sufiicientl hard to make a clean sharp impression. T e letters formed on the perimeter indicated at 5 may be engraved thereon with sufficient depth that, at

intervals of six months, they may be slightly turned down on the face to renew their sharpness to overcome the slight wear. Also, if desired, sufficient metal may be formed in the rim of the wheel that the entire embossing letters or projections ma be turned off and a new set engraved. ny chan e in the diameter of the wheel may readily %e com ensated for by the adjustment of the sha 7 carrying the wheels and other mechanism by which they are supported and moved. It will be manifest that, if desired, instead of forming these embossing wheels 4 of metal, they may be formed of glass or other hard material which may be molded and will not be injured by the moisture arising from the damp web, though metal is along the length of the shaft 7 and the drying cylinder 3, so that as many lines of embossing in transverse relation may be provided upon the paper sheet, as desired. In the present instance, there would be lines of embossing of the trade-mark upon the paper web at such intervals as would sufiioe the requirement when the paper web is subdivided into narrow webs and then into towels after it has been dried.

When the 'paper web is being adjusted over the drying cylinders in the paper making machine, the shaft 7 may be adjusted so as to lift all of the embossing wheels 4 clear of the cylinder 3 and the paper web. After the paper web has been adjusted and the paper making machine is in operation, the shaft 7 may be again adjusted to lower the embossing wheels 4 into contact with the paper web and with sufiicient adjustment to enable the springs 17 to firmly press the wheels in contact with the paper with a yielding pressure.

It will now be apparent that I have devised a novel and useful construction which embodies the features of advantage enumerated as desirable, and while I have in the present instance shown and described the preferred embodiment thereof which has been found in practice to give satisfactory and reliable results, it is to be understood v that I do not restrict myself to the details,

as the same are susceptible of modification in various particulars without departing,

from the spirit or scope of the invention.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a machine of the character stated, the combination of a drying cylinder with an embossing wheel of hard resistant material having its perimeter provided with embossing projections, means for supporting the embossin wheel with capacity for adjustment to an from the drying cylinder, and hand operable means for adjusting the supporting means whereby the embossing wheel may be raised clear of the paper, and spring devices carried by the supporting means for applying a greater or less pressure between the embossing wheel and the paper web upon the drying cylinder.

2. The invention according to claimil,

further characterized by having a blast nozzle carried with the supporting means for the embossing wheel and directed toward the perimeter thereof, and means for supplyin g a blast medium to the nozzle.

wherein the adjustable supporting means for the embossing wheel is provided with a blast nozzle movable with it during adjustment and directed toward the perimeter of said wheel, and flexible tubular means for su plying the blast medium to the nozzle while permitting adjustment of the supporting means.

4. The invention according to claim 1, further characterized by having the spring means to force the wheel toward the drying cylinder under yielding pressure, and ad justing devices for varying the operative tension of the spring.

5. In a machine of the character stated, the combination of a drying cylinder over which a paper web travels, a transverse shaft parallel to the axis of the cylinder, a plurality of embossing wheels of hard resistant material havin their perimeters provided with raised em ossin projections and said wheels arranged in axial alinement parallel to the axis of the drying cylinder, a plurality of supporting devices for the respective wheels adjustably clamped upon the shaft so that they may be individually circumferentially adjustable thereon, said devices havingspring means for yieldingly pressing the wheels toward the drying cylinder, and hand operable means for giving the shaft a rotary adjustment for simultaneously raising and lowering the plurality of embossing wheels.

6. The invention accordin to claim 5, further characterized by provi ing each of the adjustable supporting, devices for the embossing wheels with a blast nozzle for directing a blast upon the perimeter of the wheel, a stationary blast supply pipe and a plurality of flexible connections from the blast pipe to the respective blast nozzles of the plurality of embossing wheels.

In testimony of which invention, I hereunto set my hand.

PHILIP D. PARSONS.

he invention according to claim 1,-

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