US1196181A - And apparatus for watermarking paper - Google Patents

Description

J. D. TOMPKINS & F. H. FULLER.

PROCESS AND APPARATUS FOR WATERMARKING PAPER.

APPLICATION FILED JULY 24, I913.

]1. 9 1M Patented Aug, 29, 1916.

JOHN D; TOMPKINS, 01E VALATIE, AND FREDERICK H. FULLER, 01F POTSDAM, NEW

YORK, ASSIGNORS TO TOMPKINS-HAWLEY-FULLER COMPANY, OF VALATIE, NEW

YORK, A CORPORATION OF OREGON.

PROCESS AND APPARATUS FOR WATERIVIARKIN G PAPER.

wearer.

Specification of Letters Patent.

Patented Aug. 29, 19116..

Applicationfiled July 24L, 1913. Serial No. 780,868.

To all whom it may concern:

Be it known that we, JOHN D. TOMPKINS and FREDERICK H. FULLER, of Valatie, in the county of Columbia, and in the State of New York, and Potsdam, county of St. Law rence, and State of New York, respectively, have invented certain new and useful Improvements in Processes and Apparatus for Watermarking ]Paper, and do hereby declare that the followingis a full, clear, and

' exact description thereof.

' equal tensile strength in all Our invention relates particularly to a process and apparatus for producing glazed water-marks inpaper.

Hitherto paper has been water-marked by, displacing the fibers in the paper in such a manner that light would be more readily transmitted by 'the'portions of the web containing the displaced fibers than in the remainder of the Web. The displacement of the fibers has, however, caused the portions of the web so treated tobe much weakened and the result has been to weaken the web of paper as a whole. A web of paper so attenuated is not so valuable commercially as a web containing. water-marks and not having the weakness of paper so treated.

The web of paper should be such as to have parts and in every direction. I

In general our invention comprises the productionv of water-marks in paper by the application of heat and pressure. A web of paper so, treated has very clearly defined water-marks and becomes glazed at the same time that the water-marks are produced inthe paper.

While our invention is capable of being carried out in many different ways, we have described hereinafter one form of the process, and 'used in connection therewith certain forms of apparatus which we have shown in the accompanying drawings, in which Figure 1 is a side elevation of a machine equipped with our invention, the same being shown somewhat diagrammatically; Fig. 2 is a cross-section of an embossing roll; Fig. 3 is a fragmentary view of the inside elevation of the same; and, Fig. 4 is a side e1evation of an embossing band and supporting rolls therefor, which may be used to take the place of the embossing roll shown.

in? the preceding figures.

In the drawings, reference being had to Figs. 1, 2, 3 and 4,1 indicates a paper machine of any desired character in which to any suitable support upon a pivot 8. An f adjustable Weight 9 may be placed in any one of a series of notches 10 in the top of one of the {levers 7, in order to give the requisite pressure to the roll 6. At the extreme end of one of the arms 7 there is attached a chain 11 which passes over a roller12 so that by operating the chain 11 the roller 6 may be moved into or out of contact with the Web of paper 2 upon the heating drum 5. It will be understood that in this form of our invention the roller 6 carries upon its periphery, projections 13, as shown in Fig. 3, in order to produce water-marks'of the desired shape in the web ofpaper while on the heating drum 5. The web of paper 2 passes around'the heating drum 5 and comes into contact, at the lower side thereof,

with a crimping plate 14 which is constructed in the usual manner. Thereafter, the crimped paper passes to a drier 15 made'in any manner desired, and shown diagrammatically in Fig.1 as a drying apparatus of the Well-known type.

Instead of making use of a roller 6 having projections 13 to give the'web of paper water-marks of the desired shape, we may make use of a smoothroller 16, as shown in Fig. 4:, having a band of felt or other similar material 17, paming around the same and around a series of guide rolls 18. One of said guide rolls 18 may be upon the same "axis as the roller 12. In order to give the web of paperwater-marks of the desired shape, the band 17 has sewedthereto, or attached thereto in any other desired manner, a number of raised portions 19.

The operation of the process is as follows: The web of paper 2, afterleaving the papermaking machine 1 in a somewhat moist Web of paper while still adhering to the 55 drying surface.

4. The process which comprises making a paper web, pressing the same on to a drying surface, producing water-marks in the paper web while moist and before it has been dried, by the application of additional pressure condition, passes over the heating drum 5, and whileheated upon said drum is subjected to pressure from the roll 6 or the roll 16, the pressure of which may be ad- 5 justed by the movement of the weight 9. The pressure which the projections carried upon the roller 6 or 16 exert upon the body of the traveling web of paper results in producing water-marks having the shape of the paper web while moist and before it has been dried by the application of pressure and heat to the -web on a drying surface,

. thereby causing the paper to adhere to said surface, and then crlmping the entire web of paper While still adhering to the drying surace. t

I a ,3. The rocess which comprises makinga -paper we then producing glazed Watermarks in the paper web while molst and before it has been dried by the application of i I 3 pressure and heat face, thereby causing the paper'to adhere to said surface, and then crimping the entire to the web on' a drying surupon restricted areas in said web on the drymg surface, thereby causing the paper to plate cooperating with the heated surface.

10. In a device of the character described, a heated drum, a water marking pressure roll for pressin on the same, having difierences in its sur ace elevations, means for adjusting the pressure thereof,,and a crimping plate cooperating wlth the heated surface. In testimony that we claim the foregoing We have hereunto set our hands. i I JOHN D. TOMPKINS. FREDERICK H. FULLER. Witnesses r l L. BRODERICK,

H. C. NORTH.

' 10 said projections, which water-marks are adhere to said surface, and then crlmping veny clearly defined. At the same time, the the entire web of paper while still adhering paper is given a glazed surface so that the to the drying surface. resulting product is a glazed, water-marked 51 In a device of the character described,

paper. It will be understood that in proadevice having'a heated surface, water mark- 15 ducing\ water-marks in this manner, the ing means for pressing on the same, comprise fibers of the web of paperare not displaced ing a surface having differences in its surso that all portions of the web of paper ,eonface elevations, and a crimping device cotain the same amount of paper stock, and operating with the heated surface. 7 therefore have an equal strength through 6. In adevice of' the character described,

v 20 out. The web of paper, after being watera device having a-heatecl surface, means for marked-in this manner, is.crimped by the pressing on the same, comprising a surface crimping plate 4 and is then conducted over having differences in its surface elevations, the drier to entirely remove the remaining means for adjusting the pressure thereof,

. moisture in the paper. and a crimping device cooperating with the 25 While we have described 'our invention heated surface.

above in detail, we wish it to be understood 7. In a device of the character described, that .many changes may be made therein aheateddrum, awatermarkingpressure roll withoutdeparting from the spirit of our infor pressing onthe same, having differences I vention. I in its surface elevations and a crimping de- 30 We claim: 1 vice cooperating with the heated drum. 1."The process which comprises making a 8. In a device of the character described, paper web, then producing water-marks in a heated drum, a water-markin pressure the paper web while moist and before it has roll for pressing on the same, hav ng differbeen dried by the application of pressure to ences in its surface elevations, means for ad- 35 the web on a drying surface, thereby causjusting the pressure'thereof and a crimping ing the paper to adhere to said surface, and device cooperating with the heated drum. then crimping the entire web of paper while 9. Ina device of the character described, a i

still adhering to the drying surface. heated drum, a water marking pressure roll 2. The process which comprises making for pressing on the same, havlng differences 40 a paper web, then producing water-marks in in its surface elevations, and a crlmpmg

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