Патент USA US2117840код для вставки
May 17,’ 1938- 2,117,840 L. E. CREW APPARATUS FOR FACE SATURATING POROUS MATERIALS IN THE MANUFACTURE OF HARD SURFACE FLOOR COVERINGS Filed Jan o-o>o‘0 WIT/V555 14, 1936 o Q70 o By HTTOFNE')’ PatentedMay 17, 1938 2,117,840 UNITED STATES PATENT OFFICE 2,117,840 APPARATUS FOR FACE sA'rURA'rING P0 ‘ RoUs MATERIALS IN THE MANUFACTURE OF HARD SURFACE FLOOR COVERINGS ' Leon E. Crew, Elmhurst, Del., assignor to Dela ware Floor Products, Inc., Wilmington, Del., a corporation of Delaware » Application January 14,v 1936, Serial No. 59,037 “ 2 Claims. _ (Cl. 91,-—,51) The present invention relates to the treatment of relatively porous material made from wood I Moreover, with the aid of my invention the quantity of ?uid saturant supplied to and ab pulp or the like in strips several feet in width and. ‘ sorbed by the base material may be subjected of indeterminate length preparatory to applica tion thereto of a colored decoration in the manu to exact control and the extent of its penetration facture ‘of hard surface ?oor coverings, or in some instances during the application of color ing matter to one surface thereof. can thus be regulated so as to obtain the mos satisfactory and economical results. usual practice to-initially “saturate” a strip of fecting penetration of the saturating ?uid into the porous material used as a base by passing it through a body of a ‘suitable saturating ?uid, and maintaining the remainder of the strip substan thereinto from the surface to which it is applied ‘ It is therefore a principal object of the inven m the production of hard surface ?oor cover- ' tion to provide means for progressively saturat ing one face of a strip of porous material and ef 10 ings of certain types, it has heretofore been the tor-then subject it to the action of squeeze rollers to‘force the ?uid into the base as well as to re— '.»move11 any excess of the ?uid therefrom. The saturated base, while it is still wet with the ?uid, then passes to a printing machine or the like op erative to ‘apply to one face thereof the desired colored ornamentation, the miscibility of the 20 printing dyes or other coloring matter with the saturating ?uid facilitating‘ the penetration of the former into the base for an appreciable depth from the printed face. This practice is open‘ to certain objections, 25 among which, is the'tendency of the base when its opposite faces‘ are wet with the saturating ?uid to stick to the printing machine'lnstead of mov ing freely therethroughythe tendency of quan 30 tities of the saturating fluid to adhere to the bed of the machine through contact therewith of the back face of the material while wet with the ?uid, thus necessitating frequent cleaning to pre vent interference with satisfactory operation of the machine; and the absorption, because of pas “ sage of the base through a body or the ?uid, of larger quantities thereof than required for» best results, the entire thickness of the base often be coming completely saturated, although penetra the strip to a desired depth from said face, while tially free of the fluid. Other objects, purposes and advantages of the 15 invention will hereinafter more fully appear or will be understood from the following descrip tion of apparatus constructed in accordance therewith reference being had to the accompany ing drawing,in which: Fig. l is a more or less diagrammatic longi 20 tudinal section of the said apparatus; Fig. 2 is a side elevation of a portion thereof showing means for maintaining a body of the saturating ?uid in contact with the surface of the saturating roller; Fig. 3 is a fragmentary top plan view of the’ apparatus shown in Fig. 2; and Fig. 4 is a fragmentary side elevation of the main driving vgears of the machine. 30 Like characters of reference are used through out the drawing to designate the same parts. In saturating one face of a strip of porous base material with the aid of apparatus embodying my invention, I ?rst preferably subject the strip 35 to mild heating as it is progressively drawn from a roll or the like and then While it is still warm continuously apply to one of its .faces a ?lm of suitable saturating ?uid, desirably by transfer 4O tionof the ?uid thereinto for only a relatively small distance from one face is all that is required for proper ornamentation of that face. 10 - ring the ?uid to the'strip from a moving surface 40 to which the ?uid is supplied in a continuous, substantially uniform ?lm. The surface carry ing said ?lm is preferably moved at a somewhat My invention is therefore designedto provide improved apparatus for effectively saturating or ‘ higher speed than the strip at the point of en impregnating one face of a porous base mate rial to a desired depth sufficient to assure suit able penetration of coloring matter thereinto while maintaining'the opposite face and the ma terial lying adjacent theretofree or virtually free of saturating ?uid and thus substantially in its normal or dry state, whereby contact of appre ciable quantities of the saturating‘ ?uid with the bed of the machine is prevented so it can be kept gagement therebetween so that an adequate sup ply of the ?uid to the strip is assured, and the latter is then subjected to severe rolling pressure whereby the ?uid is caused to penetrate into the pores of the strip for an appreciable depth below the face to which it was applied. Thereafter, it ; clean, dry and free from contamination thereby the strip is to be printed, it is at once led to ‘the printing machine while its ?uid impregnated face is still wet and printing of such face isv then car ried out in the usual way and followed by drying at all times. and other customary steps. ' * 45 2 2,117,840 In manufacturing solid color floor coverings, however; I have found the printing step may be dispensed with entirely when the saturating fluid applied to the strip in‘the manner just described .is ?rst suitably colored with the necessary pig ments as the strip may be dried immediately after being subjected to rolling pressure to effect the proper degree of penetration of the colored saturant, or after the front face is saturated 'with thelatter the back face may be saturated with uncolored saturant or other. suitable ?uid ' before the strip is ?nally'dried. I shall now refer more particularly to the ma quired and .none is shown in the drawing; it is preferable, however, that such mechanism be of a character permitting the gears IT, [I by which one roll is driven from the other to be main tained continuously in mesh at any adjustment ‘ thereof likely to be demanded by operating con ditions. . ' I Suitable roll driving mechanism (not shown) is connected, desirably through a pinion IS, with gear I‘! for driving roll .l5, for example. at a 10 peripheral’speed of 26 feet per minute and the gear l8,‘ meshing with gear I'I, thus drives roll ‘l6 at the same speed, the combined action of chine shown in the drawing which is constructedv .thfese rollsvon the strip moving it through the 15 in accordance with the invention and eminently I machineat. a corresponding linear speed. ‘ 15 suitable for the performance ‘of the operations Whenthe strip'is thus driven by the squeeze I have mentioned, it being understood, however, _ rolls at a linear speed of approximately 26 feet that for clearness of illustration ‘certain me per‘ minute it "is' ‘preferable that the saturating chanical elements generally employed in, ma ‘roller -1 be driven, by mechanism now to be de 20 chines of this general character, such for ex scribedhat a peripheral speed of ‘approximately ample as journal bearings and-supports'there 1'31; feet per minute, but- when other". speeds are 20 for, driving mechanism and other'well‘ known j employed it'is ‘desirable ‘that approximately this devices have‘been omitted as-they maybe of any. vratio, 26:31,‘ be fairly closely ‘adhered v‘to, solas .‘desired character‘ or type suitable for their in-} ‘to'm‘ain-tain ‘a ‘sm‘all'body of the saturating ?uid 25 tended functions‘; it will thus be understood their speci?c form and/orv arrangement 'are‘ merely 'f‘in contactv with roller "I and thev adjaf’cen't face 25 matters of convenience or preference. 7 The said machine which may best be described withreference to the progress of a strip there 30 through while being subjected to the aforesaid ‘ of ‘the strip just in‘ advance of the area of most intimate engagement therebetween whereby ‘an adequate supply of: saturating ?uid to that face is assured. \ f ' For driving roller 1 at the desired‘ speed, the treatment, comprises a pair of horizontally dis ‘ shaft of roll I5 is provided with a sprbcket 20 for 30 posed idle rollers I, 2 beneath which the strip S the reception ofa chain “running over another is conducted in its passage from a roll or other sprocket 22 carried by the shaft of roller, 1, and suitable source (not shown). ‘ Beneath ,the por the size vof these ‘sprockets is-preferably propor 35 tion of the strip extending between these idle tioned so as to maintain approximately the ratio rollers is disposed a shield 3 open at the top and 26:31 between the peripheral speeds of the roll closely underlying the strip through which ex ers for the reasons to which reference has been tend a plurality of steam pipes l or other heating means effective to warm the strip, preferably to a temperature of about 100° F., as it passes made. , _ ' ' The shaft of the other squeeze roll I‘ is pro vided with a somewhat similar sprocket 23 for the thereover. The warmed strip thereafter passes’ vvreception of av chain 24 which chain vdrives a upwardly over an idle roller 5 and thence an larger sprocket 25 on the shaft of a' drum 25 above gularly rearwardly and downwardly beneath an and forwardly of the squeeze rolls. The strip, idle roller 6 and rearwardly and upwardly over _a after its passage between the latter, reverses its saturating roller 1 desirably about 81/2" in di direction of travel and passes upwardly and for ameter and in length at least equal to the width wardly over this drum, ‘from which it may be fed of the strip. This positioning of these several directly to ‘the printing machine or other mecha rollers as well as that of others hereinafter more nism (not shown) by which it is to be further speci?callymentioned,. aifords the desired sup operated upon. , _ port to the strip and permits the machine to be The pressure to which the strip is subjected by constructed as a compact unit, but it will be un the squeeze rolls forces the saturating ?uid well derstood they may be otherwise arranged if de into its pores to the desired depth from the face ' sired as long as they are so positioned as to prop to which it is applied, but preferably not so far erly perform their respective functions. as to wet the opposite face of the strip, the pres A trough [0 supported beneath the‘ saturating sure exerted by the>squeeze rolls being suitably . roller 1 maintains a body of satu-rating'?uid F regulated to effect this result. in contact with the lower ‘portion of ‘this roller, The saturating ?uids usually‘ employed are ' while an adjustable doctor- blade H extends, often slightly tacky after application to the strip, across the face of the roller between the ?uid F and some of the ?uid may adhere to squeeze roll 60 'and the strip S at its point of contact with the l5 as the strip passes thereover. A cleaning blade roller thereby permitting accurate control of 21 is therefore so positioned as to bear against 00 the thickness of the ?lm of ?uid carried by the the roll surface and continuously scrape there rollerto the strip during ‘its rotation in engage from any ?uid or other material adhering thereto. ment therewith. ' v > ‘ Mention has been made of means for supplying From the saturating roller 1, the strip passes the saturating ?uid to saturating roller ‘I, com ‘angularly rearwardly and downwardly beneath prising a trough III. This trough is desirably of _ ‘an idle roller “.and thence between a pair of squeeze rolls l5, l6 operating at eqiial rotational speed determinative of the linear speed of the slightly greater length than roller 1 and may be ~ substantially rectangular in horizontal section. As best shown in Figs- 2 and 3, adjacent each end 70 strip and exerting a‘ controlled rolling pressure - of the trough is a pair of vertically .and horizon thereon. Since devices of many di?erent types are known for regulating the pressure exerted by pressure rollsiofthis general‘character on a strip passing between them, no speci?c descrip tally offset rollers 30, 3| adapted to support the trough in a substantially horizontal position be neath roller 1 upon inclined rails 32, one rail . being disposed at each side of the machine and 76 tion of mechanism suitable therefor is herein i'e- ’ extending downwardly and rearwardly from the 75 3 2,117,840 vicinity of roller 1 to permit the trough to be lowered along the rails to the rear'of the machine when it is desired to remove it therefrom for cleaning or the like. A latch 33 may be provided adjacent each end of the trough to engage the“ upper end of the corresponding rail and releas ably maintain the trough in ?uid feeding relation to roller 1. While I have herein described certain mecha 10 nism adapted for the purposes of my invention and constructed in accordance therewith, it will be understood that changes and modifications in the form, construction and arrangement of the several elements of the said mechanism and in 15 their mode of operation will readily occur to those skilled‘in the art and may be made if desired Without departing from the spirit and scope of the invention as de?ned in the appended claims. Having thus described my invention, I claim 20 and desire to protect by Letters Patent of the United States: ‘ 1. In a machine of the'class described, a satu rating roller rotatable on a horizontal axis, a trough disposed beneath said roller adapted to contain a ?uid in contact with the roller surface, a pair of inclined rails respectively disposed ad- , jacent opposite ends of the trough, means pro jecting outwardly from the ends of the trough adapted to movably engage said rails to support the trough therefrom, and releasable means for restraining said last mentioned means from movement relatively to the rails when the trough is in position to eifect contact between its con- , _tained ?uid and the saturating roller. 2. In a machine for face saturating a strip of ?oor covering felt, a saturating roller rotatable on a horizontal axis and adapted to engage one face of the moving strip, a trough beneath the roller adapted to maintain saturating ?uid in 15 contact with the roller surface, a pair of inclined parallel rails disposed adjacent the ends of the trough, means movable along therails for sup porting the trough therefrom and releasable means for maintaining the trough in ?xed posi 20 tion relatively to the roller to maintain said ?uid in contact therewith. ' LEON E. CREW.