US1432734A - Process and apparatus for coating paper - Google Patents

Description

F. P. REED. PROCESS AND APPARATUS FOR COATING PAPER. APPLICATION FILED APR.22, 191sv RENE ED APR. 12. 1922.

. O M p. n q ,m V... w m .1 M Q N m H: a m MP. 4? w film E 7 w m m W F M A m \w k NJ 1. ML 2 M Y .J, m 0 O. a. B M m 1---. Q PM P j A? EH NR T F. P. REED.

PROCESS AND APPARATUS FOR COATING PAPER. APPLICATION FILED APR. 22. 1919. RENEWED APR. 12.1922. 1,432,784.

Patented Oct. 17, 1922,

2 SHEETS-SHEET 2 v w A M p aw a a r w j W v w I W m mg m I D. D. U U D U n: uwwnwfi u Maw H mm m m m m M w W #5 J? zm/vwl D: J\ w wfw 5 1 WW INVENTOR m M m m w m w .M a

Patented 0d. 17, 1922.

eam earaar castes.

FREDERIC PAYSON REED, OF EAST ORANGE, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGNMENTS, TO CHARLES C. ORCUTT.

PROCESS AND APPARATUS FOR COATING PAPER.

Application filed April 22, 1919, Serial No. 291,918. Renewed April 12, 1922. Serial N0. 552,062.

7 '0 all whom it may concern:

Be it known that I, FREDERIC PAYSON EED, a citizen of the United States, residing at East Orange, in the county of Essex, State of New Jersey, have invented certain new and useful Improvements in Processes and Apparatus for Coating Paper; and I do hereby declare the following to be a full, clear, and exaot'description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a method of and apparatus for coating paper, and is a development of the invention disclosed in my prior application, Serial No. 241,102, filed June 21, 1918.

According to the invention, a continuous web or sheet of paper is given a colored or tinted surface to render it suitable for use for candy boxes, a lining for as a covering the covers of books of record, a covering for files, etc. The coloring operation is entirely automatic throughout, whereas heretofore it has'been usual to produce paper of the character stated by hand treatment, which is necessarily tedious and expensive, besides in- ,volving a heavy waste of paper. The present inventlonaims to continuously coat or tint a traveling web or stri of paper in the same general way as disc osed in my earlier application, but instead of streaking the paper by spattering it with colored flecks, the .color is applied to the paper in the form of continuous lines which run longitudinally preferably feather-edged, which adds greatly ance of the finished product and renders it particularly applicable for use as wall paper, in addition to the These lines or streaks may be of different colors, may have any desired relative arrangement or may be made wide or narrow according as preferred, but in any instance, they are formed'by applying a solid color in a conblades, according to thecharacter of lines to the attractive appearmain uses indicated above.

color scheme or pattern, and

desired. These lines are preferably feather edged, as has alr eady been stated, and I obtain this feathering effect, in the case of the pens, by resiliently mounting them and by interposing between the web and its support a strlp of foraminous material, preferably wire netting, the arrangement being such that the pens rest upon the web, and as the latter passes along the netting, up-and-down vibratory movement, which is almost imperceptible, is imparted to the pens; and this vibratory movement, although very slight, necessarily produces slight variations in the pressure of the pens upon the web, whereas, when the netting is omitted, then the pressure of the pens would be uniform and the feathering will be by no means so pronounced, although, of course, some feathering effect is necessarily present, due to the fact that the web is moistened before being subjected to the action of the pens. It is also possible, both with the pens and with the blades, to obtain sinuous instead of straight lines, by imparting a reciprocatory movement in some suitable manner to the carriage on which the pens or blades and the. color tank or trough are mounted,

The invention also comprises the feature of printing the colored paper, and it accordingly resides in the provision of an improved device for producing this type of ornamentation. The printing may be applied upon the streaks or stripes of color, or in the spaces between the streaks and in the latter instance, they may be of the same color as the streaks themselves. In the former instance, the printing are of colors which contrast with those of the streaks.

The invention further comprises an improved device which admits of the automatic lifting of the web above the netting simultaneously with the stoppage of the drive, but such device is also capable of being actuated both to permit the drive to be started without lowering the web upon the netting, and conversely, to lower the web without entailing the starting of the. ma

chine. I

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts, features and steps, all as hereinafter fully described. An embodiment of the invention, which, for all present purposes, may be con- 3 v chine, and it is therefore suflicient to statesidered as preferred, is illustrated in the accompany drawings, but it is to be understood that the invention is not llmited to such embodiment but, on the contrary, is susceptible of substantial modification and change, while still-falling within the scope of the appended claims.

In the drawings, Fig. 1 is a fragmental longitudinal vertical section, with parts in side elevation, of a machine constructed in accordance with the invention, and equipped with the improvements above specified;

' Fig. 2 is an enlarged detail view, in plan, of the combined control for thepaper and the drive;'

Fig. 3 is an enlarged fragmental vertical section showing the embossing device and its position with relation to the streaking devices, two of which are illustrated;

Fig.4 is a plan view of Fig. 3; and

Fig.5 is) a detail perspective view of one of the'blades which are utilized when-relatively wide streaks or stripes are to be produce a Referrin more particularly to the drawing's, tllGI'BlS represented in Fig. 1 a machine which is generally similar to the one dis- I closed in my prior application above identia fied. Reference may be had to thisapplication for adetailed description of the mathat the machine comprises a framework, at

the frontend ofwhich is rotatably mounted the roll 1 of paper to be coated, which may be ordinary white paper of the character commonly used for making this class. of

goods. As the sheet or web of paper unwinds from roll 1, it passes through a train of tension rolls 2, then around a larger tension roll or drum- 3, and then over -a guide roll 4 to the coating means. The latter preferably comprises a pair of felt covered rolls 5, which are supplied with liquid from a tank 6.- In the present instance, the coating rolls rest upon and are frictionally driven by a pair of rolls 7 which dip into the tank, al-

.though this arrangement is not essential,

since the rolls 5 may themselves contact directly with the liquid in the tank. Thereafter, the web passes around a rotating drum 8, where the excess liquid is removed and that remaining on the web is more uniformly distributed and worked in.

The means for removing the excess liquid may consist of a pair of Squeegees 11 and 12, the free ends of which are covered with felt which bears yieldingly against 'the' paper and scrapes off the excess liquid into a pan likewise is pivotally mounted in the framepart and adjustedby threaded rods 19. Y

. arranged at suitable intervals apart in 'a row 'ings provided in a pair of upstanding brackieleased when an adjustment of the squeegee is desired. The distributing device preferably consists of' areciprocating head 18 WhlCh is. identical with 'the corresponding part in the earlier construction, and is mounted and. operated in'the'same way'as that After. passing the squeegees and the distributor, the paper moves. rearwardly toward the coloring and drying mechanisms or devices. The 'coloring devices, which embody, the most important features of the invention, preferably consist, as previously I stated, of a series of spaced parts or members which are supplied with liquid color from a suitable trough or tank.'- Where it is desired to obtain. relatively narrow streaks, thecoloring devices are in the nature of pens which are generally similar to the pens employed in ruling machines. These pens are indicated at 20in Figs. 2 and 3, and'they; are

transversely of the web, the pens being. integrally connected with abase or head 21 which is clamped between a pair of'superposed horizontal blocks 22 .a'nd .23, tlfese blocks being fastened togetherbytistuds 24 and uniting to form a carriage whichv is. disposed transversely of the machineand is pivoted along its rear edgeto a pair-"bf rods 25'which are themselves supported in bearets26 mounted upon the side members of the frame. The carriage is designed to support a removable tank 27 containing the liquid' color to be applied,the tank consisting of an elongated pan or trough which 0 is provided upon its rear face with a depending arm 28, the free lower end of which is designed to be inserted behind a strap or clamp 29 which is fastened to the rear edge face'of the carriage. The width of the pan or trough is less than that. of the carriage, and between the latter and the trough there is interposed a strip 30 of felt, the free forward-portion of which isuncov'ered. Liquid color is supplied from the trough by capillary attraction to' the ,felt strip 30 by means of a plurality of wicks 31 which contact at their outer ends with the felt strip and have theirinner ends submerged in the liquid color. The color thus supplied to the felt strip is supplied in turn to the pens 20 by means of a second series of wicks 32 which extend from'the felt strip to the .pens

in the manner indicated in Figs. 3 and 4. In this way the pens are prevented from having which is illustrated in an excessive quantity of color. supplied to them, the streaks or stripes, this can be readily done by turning back their feeding wicks 32 upon the carriage.

There may be any desired number of coloring devices, all of which will be of counterpart construction and two of which are here illustrated. Each trough will in such case be filled with liquid of a different color, and the pens of the various sets will be arranged in alternating or staggered; relation to produce the desired relative disposition of the different colors. In other words, a great variety of patterns can be produced by changing the arrangement of the sets of pens with relation to each other with resultant changes in the c lored effects produced by the pens.

.As already explained, the lines or streaks produced by the pens 20 are comparatively narrow, and have 'a decided feather effect. This is due to web there is interposed a layer of woven wire screen 34 or other suitable foraminous material. The pens rest upon the Web, and as the latter moves along over the wire screen, the pens will have imparted to them a slight up-and-down movement, which is due to the fact that the points of the pens bear upon the web directly over the interstices of the netting so that the movement of the web tends to imperceptibly vibrate the pens. Actual experiments have shown that this feathered effect disappears almost entirely if the web is allowed metal shield or arch 33 instead of upon the netting. In case it is desired to produce wider lines or stripes, then the pens are replaced by a series of metal blades 35, one of Fig. 5. These blades 35 are resiliently mounted on the carriage in much the same way as the pens and each is provided with a strip of felt 36 which enthe carriage. support any one of the carrlages in such a cases its free lower portion and isv designed to contact with the web. Color is supplied to the blades by means of thetwicks 32 as will be understood.

The streaking devices, whether in the form I of pens or,blades, are held against the web by gravity,.due to the pivotal mountingof It is possible}, however, to

position that the streaking pensor blades will be raised above the web, in case it is desired to cut out the lines which would otherwise be formed by thalj set. Accordingly, there is pivoted to each end of the carriage an arm 37 which carries at its outer end a screw stop'38, the lower end of Which is designed to engage a boss 39 provided on an arm 40 which is pivoted upon the top of the corresponding side member of the frame. Whdn the lower ends of the screws 38 rest and if it is desired to cut out any of the fact 'that between the to rest directly upon thetweenthe drum 8 and .the other drum upon the bosses 39, then the carriage will be supported in raised position with the streak"- ing devices out of contact with the web, but when the screws are moved, out of the path of the bosses, then the carriage will be lowcred and the streaking devices will be caused to bear upon the Web. The carriage is here shown as stationary, but it will be understood that if desired, the carriage may be reciprocated endwise through the intermediary or suitable devices, in which case the lines or. streaks produced will be of sinuous or zig-zag character. effecting this reciprocat'ory movement is immaterial to the invention, and hence, is not illustrated.

l The device for printing the web is here shown as comprising a set of disks or wheels 41 which are mounted in spaced relation upon a horizontal shaft 42 journaled in brackets 43 mounted on the tops of the frame sides. The peripheries of these disks 41 have attached to them at regular intervals apart, a series of stamps or equivalent devices 44 Which are cut into the form which the printings are to have and which print directly upon the web. The stamps 44 may be of felt, rubber,'or other suitable material, and as will be understood, they may have any desired shape. The disks 41 which carry the stamps are adjustable along the shaft 42, so that the The precise means for 4 printing may takeplace either upon the streaks formed by the pro v cedingset of pensgor in the spaces'between such streaks, and where two sets of streaking devices are employed, as in the construction illustrated, the printing device will be located between the two. Color is'su-pplied to the stamps on the disks from a trough 45 in which a coating roll 46 dips, this coating roll running incontact with a felt covered roll 47 likewise mounted in the brackets 43. The felt covering travels in contact-with the stamps and acts to ,ink them.

The coated web is dried in the same way as that disclosed in my earlier application; that is to say, it is subjected to heat of very considerable intensity while traveling( be-. not shown) at the opposite end of the machine. This heat is supplied by a plurality ofgas burners 48 extending, transversely of the machine and. each having a large number of small jets playing directly against the under side of the metal shield or arch 33. The

superimposed wire nettingor screen 34 dis- In order that there may be no over-heating of the paper above the burner, when for any reasonthe machine must be stopped, mechanism is provided for lifting the web out of contact with the wire netting, as in the earlier construction, and this mechanism is coupled up to a device for throwing the drive into and out of action, so that when the machine is stopped, the paper will be automatically raised. Referring to Figs. 1 and 2, the drive shaft 49 carries fast and loose pulleys 50 and 51, from one to the other of which. the belt 52 is adapted to be shifted'by means of a fork 53 carried by a bar or lever 54. The web of paper overlies a plurality of small transverse rods 55 which are supported at their ends by arms 56, connected together by a pair of horizontal bars '57, one at each side of the machine, each arm pushed longitudinally, the arms 56 will be caused to swing about their pivotal supports into the positions indicatedin dotted lines, and the rods 55 will lift the web above the netting. The inner ends of the bars 57 are pivotally connected to a toggle 59, the component members of which are in turn pivoted to a vertical rod 60 carrying a weight 61. The lower portion of this rod 60 is provided with a catch 62, which, in the normal position of parts, engages the lug 63 provided on a bar 64 which is mounted to slide endwise between and parallel with the shaft 49 and the bar 54. The bar 64 is also provided with a finger 65 which extends downwardly therefrom into the path of a cross-piece 66 pivoted centrally upon the bar 54, so that when the latter bar is pushed inwardly, its cross-piece 66 will strike the finger 65 and thereby shift the bar 64 in the same direction, with the result that the lug 63 will be disengaged from the catch 62 on the rod 60. The rod 60 will then drop, due to the action of its weight 61, and will straighten out the toggle 59, thereby producing the endwise movement of the bar 67 and the resultant lifting of the web. Thebars 54 and 64 are suitably guided and supported in the frame and the first-mentioned bar has connected to it a flexible metal rod 67 which is pivoted at its inner end to the cross-piece 66 and is provided intermediate its ends with a pin 68 that normally fits in an openin provided in a lug 69 secured to bar 54, though this arrangement may be reversed and the pin carried by said lug. 'The rod 67 -'can be bent'upward to effect the disengagement of pin 68 from its perforation or seat, and said rod 67 can thereafter, be pushed inward, with the result that the cross-piece 66w1ll be moved out of the path of finger 65 on bar 64. Consequently, the bar 64 can then be pulled outward to latch the lifting device, which has been previously reset, in operative position, without entailing any return movement of the belt from the loose pulley 51 to the fast pulley 50. Conversely, ft is also possible, if the rod 67 hasv been uncoupled from the bar 54, to push the latter inwardly and shift the belt onto the loose pulley without affecting the lifting device 1n any way. It is also preferable to provide means for automatically lifting the web off the coating rolls 5 at the same time that it is raised above the wire netting, said means being so constructed as to be operated automatically by the first mentioned lifting device, while yet being capable of independent operation with respect thereto. In the form illustrated, a transverse rod 69 is arranged between the rolls 5 in position to underlie the web and is suspended at its ends from pivoted links 7 0, only one of which appears. These links are carried by a pair of levers 71 which are fulcrum'ed intermediate their ends on the frame sides, and either of said levers may be engaged by a laterally projecting pin 72 carried by the lower end of the adjacent arm 56, which is. extended downward for that purpose as indicated in Fig. 1. The other end of eachlever 71 is engaged by a. stop 73, that serves to normally hold the lever in lowered position.

Afterhaving been coated and dried in the manner above described, the web finally passes over a guide roller 74 located adjacent the roll 1 and through tension rolls 75 to a power driven winding drum 76, where it is wound up as a finished roll, the pull of the drum 76 being utilized to unwind the paper from roll 1 and cause it to travel through the entire machine.

I claim as my invention 1. In a coating machine, the combination with means for moistening one face of a continuous web, of a source of color supply, a

row of devices disposed transversely of the web to receive the color from said source of supply and apply it to the moistened face of the web in definite streaks, said devices having)their free ends bearing directly upon the we and means for drying the moistened and colored web.

2. In a coating machine, the combination with means for moistening one face of a continuous web, of means for applying color to said moistened face in definite streaks, and

means for printing the web.

3. .In a coating machine, the combination with means for moistening one face of a continuous web, of means for applying color to said moistened face in definite streaks, and 1 ing liquid color to said moistened face in definite streaks, and means .for imparting a slight up-and down vibratory movement to said streaking means, whereby the streaks are given a feather-edge.

6. In a coating machine, the combination with means for moistening one face of a continuous web, of a support along which the Web is arranged to travel, a source of color supply, a series of pens to which color is delivered from said source of supply for marking definite lines upon the web, and means for imparting a slight up-and-down movement to said pens whereby the lines are given a feather-edge.

7. In a coating machine, the combination with means for moistening one face of a continuous web, of a support along which the web is arranged to travel a strip of foraminous material interposed between the web and the support, a source of, color supply, and a series of pens to which the color is delivered from sald source of supply for marking definite lines of color on said moistened face, said pens having their points resting on the web directly above the intersticesof the foraminous strip, whereby the pens are vibrated durin the travel of the web to give the lines a feat er-edge.

8. In a coating machine, the combination with means for moistening one face ofa continuous paper web, of means for applying color in continuous streaks upon said IIIOIS- tened face, and a set of printing devices for i stamping figures upon said web having a predetermined position with relation to the streaks.

9. In a coating machine, the combination with means for moistenin one face of a continuous web, of means or applying color n continuous streaks upon said moistened face, and a set of printing wheels for stamping figures on said moistened and colored face, said wheels being adjustably mounted to alternatively stamp the figures upon the streaks or in the spaces between the streaks.

10. The method of coating a continuous web which consists in moistening one,face,of the web, applying color on said moistened face in definite streaks, and thereafter print ing figures on the moistened and streaked face in predetermined position with relation to the streaks.

11." In a coating machine, the combination with means for applying a liquid color to one face of a continuous web, of driving 'means for imparting a traveling movement to the web, a support over which the web is arranged to travel, and a device operable at V will to simultaneously disconnect the drivingmeans and lift the web above its support.

12; In a coating machine, the combination with means for applying a liquid color to one face of a continuous web, of driving means for imparting a traveling movement to the web, a support over which the web is arran ed to travel, a'device for lifting the 'web a ove its support, a device for disconnecting the driving means, and aconnectlon between said lifting device and said disconnecting device for operating both of them simultaneously, said connection being releasable to permit one device to be operated independently of the other.

In testimony whereof I aflix my signature.

FREnERic PAYSON REED,

Images