US1140873A - Machine and method for waxing paper. - Google Patents

Description

W. L. CARTER. MACHINE AND METHOD FOR WAXING PAPER.

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APPLICATION FILED DEC. 13, 1M3.

W. L. CARTER. MACHINE AND NETHOD FOR WAXING PAPER.

APPLPCATIOH FILED DEC. 13 1W3. I v 7 1 149 739 Iafvnfvd May 2;), 1915.

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Specification of Letters Extent.

Patented May as, rare.

Applieation filed Deoember 1a, rare. semi Ive-seams.

To all whom it may concern Be it known that I, WINTHROP L. CARTER, a citizen of the United States, and resident of Nashua, in the county of Hillsboro and State of New Hampshire, have invented certain new and useful Improvements in Machines and Methods for Waxing Paper, of which the following is a specification.

This invention relates to machines and methods for coating paper with wax, the particular kind of coating material I employ usually being paraiiin, and the invention has to machines of this character which will enable either a thick or a thin coatingto he applied with highly finished surfaces.

In carrying out my invention I provide means for running the web of paper first through a bath of melted parafiin wax, then ironing or smoothing the coating, then running the paper through a cold water bath to harden the coating, removing the water by a blast of cool air, and then drying and reeling up the web of paper.

The invention consists in the improvements which I shall now proceed to describe and claim. 7

Of the accompanying drawings: Figure 1 is a longitudinal sectional representation of a machine embodying my improvements; Fig. 2 is a perspective view of the air delivering nozzles and the rolls in contact with which the paper web runs after leaving the water bath. a

Referring first to Fig. 1, a suitable frame 10 is provided, said frame supporting a parafiin tray 11 and a water tank 12. At one end of the frame are bearings for a shaft or spindle 13 for the supply roll of paper a. From the supply roll the paper is led under a roll 14 and over a roll 15, the object of said rolls being to smooth out the paper and hold the web under proper tension. The rolls 14, 15, are carried by a frame 16 mounted to be adjusted on trunnions by a hand wheel 17. At one end the frame is connected to a toothed segment 18 meshing with a toothed segment 19 at one end of a shaft 20. It is to be understood that at the other end of the shaft 20 -is another segment 19 meshing with a segment connected to the other end of the adjustable frame 16, in

order that when the hand wheel 17 is ro-,

' tated it will rock both ends of the frame 16 .so that the rolls 14, 15', may be properly From the roll 15 adjusted in parallelism.

guide roll 21 and the paper leads over a then under an adjustable guide roll 22,

which is held at the proper point below the level of the melted paraffin in the tank 11 by means ofa screw 23 mounted in a post 24 at each side of the machine. The upper end of each screw carries a bevel gear 25 meshing with a bevel gear 26 on a shaft 27 having a hand wheel 28 by means of which the gnideroll 22 may be adjusted vertically to vary the length of the paper that is imnaersed in the melted parafiin. It will be readily understood that by adjusting the 22 to alower position than indicated in given level, will be increase d.- From the roll 22 the web of paper it leads over a guideroll 29 mounted in a frame bracket 30-, which latter is provided with bearings for upper and lower rolls 31, 32 respectively. Preferably the lower roll 32 has a covering 33 such as a blanket jacket. The bearings of the upper roll 31 are adjusted by means of a screw at each end, one of which is shown at 342 in Fig. l. The space between the rolls 31, 32, may be varied by means of a hand wheel 35 carried by a shaft 36 having bevel gearing 37 with the screws 34. Suitable pipes 38 in the bottom of the paraffin tank 11, supplied by steam under the control of the valve 39,provide for keeping the paraifi'n in melted condition. The roll 33 is hollow and is provided with suitable means for heating it, as by a steam inlet indicated at 40. From the nip of the rolls 31, 32, the web of paper passes over hollow heated smoothing or ironing rolls 41, 42, 43, which are carried by brackets 4:4,the bearings of the rolls/being laterally adjustable as by means of'screw shafts having hand Wheels 4 5. These rolls are preferably heated as by providing for the admission of steam to them or through them, in a manne 1 similar to the provision for heating the r01 32'.- Preferably the roll a1 is of steel and the rolls 2, 43, are of brass, the latter metal being found toproduce a better ironing ef; 'fect upon the'coating. As indicated by'the arrows in Fig.- 1', the direction of rotation of the'ironin rolls 42, 43, is such that the peripheries 0 said rolls move in a direction cape or be removed rolls are driven by means gearing or belting.

opposite to the direction of travel of the aper web a. As is clearly indicatedfin Fig. 1, adjustment of the rolls 41, 42 and 43, particularly the latter two, relatively to each other, the ironing or smoothing pressure upon the opposite surfaces of the web of paper may be varied according to the amount of deflection that is imparted to the web, this amount of deflection being also varied as required according to 'the tension on the entire we To provide for the return to the tank 11 of the wax that may esfrom the web before reachin the rolls 42, 43, I provide an inclined rip shelf 46. From the roll 43 the ch passes under a roll 47 mounted in suitable bearings in the water tank 12, any

suitable means being provided for keepingv the water in said tank atthe proper level.

Preferably I provide a second submerged roll 48. Rolls 49, 50 and'51 are mounted in suitable bearings ab ove the tank 12." The shafts of all of the rolls 47 to 51inclusive are .provided with sprocket wheels with which an endless sprocket chain 52 meshes, idle sprockets53 being mounted where necessary to direct the chain 52 in the proper path of travel to insure rotation of all of therolls 47 to 51 inclusive preferably at the same surface speed of rotation. All these of a chain 54 connecting the shaft of roll 51 with an upper shaft having a gear 55 meshing with a gear upon roll 56, the shaft of which is driven by any suitable means such as a belt.

The roll 56 is mounted upon a bracket 57 supported by an upright 58.

The rolls 31, 32, and the'rolls 41, 42 and 43 are drivenin the direction indicated by the arrows in Fig. 1, eitherby any suitable In Fig. 1 the web shownas passing under the 49 and '50,then

of pa er a is roll 4 then over the rolls under the 'roll 51 and over the roll 56 andi under a suitably supported to the winding reel 60, which is rotated by any suitable means such as a belt. If it be desired to continuethe lmmersion of the paper in the water for a greaterlength of time during this travel, the web instead of passing directly from roll 47 to roll 49 may be led around the roll 48 so-that the web is immersed in the form of a loop, as .indicated by dotted lines in Fig. I tainthe best results it is essential that the watershall be removed from, the aper as quickly? as possible after it leaves t e' water bath, and this is done-by blowing the water from the middle of the web toward and'ofi from its edges. To efiect this result provide an air nozzle 61 (see Figs. land through a trunk 62 leading from a blower not shown. The delivery edge of the nozzle 61 is tapering, having its apex 63.just

relatively to guide roll 59 1. To ob-- ing,

above the mid-width of the paper Web, the delivery slot 64 being continuousf By comparing Figs. 1 and 2 it will be seen that the lower edge 65 of the nozzle is in a substantially horizontal plane, nozzle as a whole inclines downwardly and has a tapering formation where the slot 64 delivers the air. Preferably the roll 50 is somewhat higher than the .roll 49 so'that the stretch of paper that receives the blast-of air from the nozzle 61 is inclined. It is important, of course, that the direction of the blast shall be rearwardly the direction" of=-travel of the paper in order to obtain the effect illus-, tratcd in Fig. 2.' The result of the structure and mounting of the nozzle Kilt-as shown and described is'that the'blastno'f air is delivered so as tohave'a spreading or plow-like action upon the. globules-of water that are adhering to the web ofpaper, to force them rearwardly and laterally and off from the edges. In otherwords, the -water is parted at the middle of the web and forced aside so as to Usually under the roll 50 and then upwardly over the roll 56'. While so passing it is subjected to the action of drying blasts of air directed against its o posite surfaces by means of nozzles 66, 6 connected by trunks 68, 69, With either tlie same blower as that which supplies air to the nozzle 61 or with another blower. Of course in practice the air employed is renderediasdry as possible before discharge through the slits 7 0 of the nozzles.

To prevent the water-blown from the web by the nozzle 61- from being driven against the still heated coating as the paper is passing toward and into the water bath, Iprovide a Fig.1. I e

The machineis rapid and continuous in its operation, andhas all necessary parts so adjustable asto provide for any desired thickness or heaviness -of coating appliedto the paper, the web passing into the water bath in a .highlyfinished condition, which condition is rendered permanent by the immediate actionof the cold water upon the coat the water being then so quickly removed from the surface, that it can have no spotting effect upon the coating. If thyi;

although the I be blown toward and off from the edges of the' wcb there is a greater amount of w'ate r adhering :tothe upper surface of the web than to the deflector such as indicated at 71 in water from water receptacle, means Water is not removed quickly by such means as the nozzle 61, as above described, the paper is liable to have a mottled appearance.

Having described my invention, I claim:

1. A machine for making waxed paper, comprising a receptacle for heated Wax, a water receptacle, means-for guiding the paper through said receptacles, and means for subjecting the paper to'the spreading action of a fan-like blast of air to remove the paper after it leaves the water receptacle.

2. A machine for making waxed'paper, comprisinga receptacle for heated wax, a water receptacle, means for guiding the paper through- 'said receptacles, and means forsubjectingthepaper, afterit leaves the water receptacle, toga spreadingblast of air directed tol' the' backwardlyrelatively to the direction of middle of the paper and travel of thefpape'r;

3. A machine for making waxed paper, comprising a receptacle-for heated wax, a for guiding the paperthrough said receptacles, and means for simultaneously sub ecting the paper, after it leaves the waterreceptacle, to agitation and a globule-removing blast of air in a direction oppositetocthe travel of the paper. f

4. A machine for making Waxed paper, comprising a receptacle for heated Wax, a water receptacle, means for guiding the paper through said receptacles, means for subjecting the paper, after it leaves the water receptacle, to a blast of air to remove particles of water from the paper, and means for finally subjecting the paper to the action of blasts .of air to dry the coating in a direction opposite to the travel of the paper 5. A machine for making waxed comprising a receptacle for heated water receptacle, means for guiding the paper through said receptacles, means for subjecting the paper to the action of a blast of air in a direction opposite to the travel of the paper, and a barrier for preventing water blown 0H from the paper from being driven against the paper on its way from one receptacle to the other.

6. A machine for making waxed paper, comprising a receptacle for heated Wax, a water receptacle, means for guiding the paper through said receptacles, means interpaper, WaX, a

posed between said receptacles for ironing the coated paper as it passes from one to the other, and means for subjecting the paper,

blowing the 'comprising a receptacle for heated Wax, a

Water receptacle, means for guiding the paper through said receptacles, and means for varying the length of the stretch of paper immersed in each of said receptacles, and means for blowing the water from the paper after it leaves the water receptacle.

9. A machine'for 'making waxed paper, comprising a receptacle for heated wax, a Water receptacle, means for guiding the paper through said receptacles, and means for water from the paper, said means comprising a nozzle having a wide delivery portion, said delivery portion being angular with the apex of its angle at the center,'connections being provided whereby the nozzle may be supplied with air under pressure.

10. A machine for making waxed paper, comprising a receptacle for heated wax, a water receptacle,-means for guiding the paper through said receptacles, means for blowing the Water from the paper, said means comprising a nozzle having a Wide delivery portion, said delivery portion being angular with the apex of its angle at the center, connections being provided whereby the nozzle may be supplied with air under pressure, and air delivery nozzles on opposite sides of the path of the paper after it passes the first mentioned nozzle.

11. The method of making waxed paper consisting in causing the paper to travel in the direction of its length, first through a bath of heated wax and then through a Water bath, and subjecting the paper, after it leaves the water bath, to the action of .t blast of air in a direction opposite the direction of movement of the paper.

In testimony whereof I have afiixed my signature, in presence of two witnesses.

WIN THROP L. CARTER. lVitnesses R. J. H0111, GUY KELLY.

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