Патент USA US2108155код для вставки
Feb, 35, 1938. R. E. WOOLENS- $08,355 WOOD GRAINING APPARATUS Filed March 1, 1937 5 Sheets-Sheet l 1 ‘ 7705/ ?Woofe/vs. Feb. 1%,‘ 1938. R. E. WOOLENS ' 210M155 ‘ WOOD GRAINING APPARATUS Filed March 1, 1957 _ , s Sheets-Sheet‘ 2 INVENTOR. 71703; E ?/oalens, I BY- ' _ ATTORNEY5. Feb, 15, m8, ' R. E. WOO-LENS 2,108,155 WOOD GRAINING APPARATUS Filed Mar‘ch 1, 1957 ‘ s Sheets-Sheet 5 ' INVENTOR. Fey .13.: WaoZe/Ys. ATTORNEYS. Patented Feb. 15, 1938 2,108,155‘ e351: 7 UNITED STATES PATENT OFFICE 2,108,155 WOOD‘ GRAINING APPARATUS Roy E. Woolens, Detroit, Mich, assignor to Parker-Wolverine Company, Detroit, Mich., a ' corporation of Michigan Application March 1, 1937, Serial No. 128,475 7 Claims. (Cl. 101—35) This invention relates to wood graining appa ratus. More particularly it relates to a novel form of wood graining machine primarily de signed to rapidly and efficiently reproduce a sim 5 ulation of wood grain upon the curved surface of a molding or other similar article. As is well recognized, the reproduction of wood grain upon sheet metal or other similar articles has long been practiced. It has heretofore been 10 conventional in the reproduction of wood grain upon articles having arcuately curved or irreg ular surfaces, to apply the wood graining ink thereto by means of a soft resilient transfer roll usually formed of gelatin or similar composition. 15 While the rolls most commonly utilized for the purpose of transferring‘ an imitation wood grained surface decoration-to an article are suf ficiently resilient so that a certain amount of surface irregularity may be tolerated, it has been found that the elasticity of the gelatinous rolls 2O now available is insu?icient to cover the entire surface of a molding or a similar article which has an extremely sharply curved arcuate surface. It is a primary object, therefore, to provide a 25 mechanism which will reproduce an imitation of wood grain upon the curved surface of a molding in a single operation thus limiting the number of hand operations which must necessarily be per formed and doing away to some substantial ex 30 tent with the touch-up operations heretofore re quired. ‘ The present invention contemplates the pro vision of a pair of wood graining units arranged upon axes at right angles to‘ each other. Each 35 of the wood graining units includes a soft re silient gelatinous transfer roll adapted.- to engage the surface of a molding to be ?nished. Means are utilized for driving the rolls in synchronism in order that each will apply a certain predeter 40 mined portion of wood graining to the surface of the article under treatment. The wood grain designs used upon‘the hard metal electrotype rolls which are utilized for transferring the ink to the gelatinous rolls are likewise synchronized 45 in order that the grained surface area applied by one roll will accurately match the grained surface applied by the other roll thus virtually eliminating any line of demarcation between the particular zone woodgrained by one unit and the 50 zone of surface woodgrained by the other unit. The invention still further contemplates means for accurately adjusting the relative positions of ‘the respective wood graining units without al tering the synchronized operation thereof in or 5.5 der that the zone to which woodgraining is ap plied by one of the units may be accurately con trolled to mate accurately with the zone to which wood graining is applied by the other of said units. The invention further contemplates the provision of novel mechanism for urging the ar- 5 ticle to be ?nished into engagement with the re-‘ spective rolls in order that an accurate mating of the zones upon which the woodgraining is - produced may be obtained. The present invention contemplates the pro 10 vision of an idle roll adapted to guide and sup port the molding to which the graining is to be applied and a, control pedal is utilized for the purpose of accurately controlling the position of this feed roll in order that the extent to which the molding may be urged into engagement with one of the gelatinous rolls may conveniently and accurately be controlled. ‘ The invention still further contemplates the‘ provision of a construction primarily adapted 20 for woodgraining. moldings which construction embodies two separate wood graining units which wood graining units are operated in synchro nism and still further contemplates the provision of accurate and easily controlled means for ad justing the position of one of the units with re spect to the other without in any way disturbing the synchronous operation thereof. - Many other and further objects, advantage and features of the present invention will be come clearly apparent from the following speci ?cation when considered in connection with the accompanying drawings forming a part thereof. In the drawings: Figure 1 is a side elevational view with parts 35 in section and parts broken away illustrating one embodiment of the apparatus. Fig. 2 is a top plan view on a reduced scale of the work table surface illustrating in general the configuration thereof. , ' Fig. 3 is an enlarged fragmentary side eleva tion view with parts in section and parts broken away showing the two associated and synchro nized wood graining units and illustrating the means by which these units are simultaneously driven. . Fig. 4 is an enlarged fragmentary sectional view taken substantially on the line 4--4 of Fig. 3 illustrating in further detail the relative po sitions of the separate wood graining units and the manner in which the same are mounted and interconnected. ’ I Fig. 5 is a fragmentary perspective view of one form of molding which may conveniently be 40 5 2 2,108,155 wood grained by the apparatus of the present in to support a housing member 40 containing the vention. second wood graining unit. This housing mem ber 40 has a shaft 4| journalled therein which The speci?c embodiment of the invention illus trated in the drawings includes generally a sup porting table or framework I 0y which may con veniently be formed from any suitable construc tion to provide a rigid support for the apparatus as a whole. for a shaft 45 on which is" mounted a wood grain This table or framework ID has bearings which serve to provide a pivotal mount ing H for tabletop I2 in order that this tabletop as a whole may be bodily swung to the desired inclination depending upon the particular type of molding to which the wood graining is to be applied, as will be more clearly understood here The adjustment of the inclination of this tabletop may play a very important part in 15 inafter. the adaptation of the apparatus herein described to moldings of a substantially varying form and surface curvature. ' The body portion of the table II! serves to pro vide a vrigid support for a housing l5 which may conveniently be formed of a casting of unitary integral structure, if desired. This housing I5 is provided with two pairs of respectively axially 25 shaft serves to carry a gelatinous transfer roll 42 similar in construction to the gelatinous transfer roll 36 described above. The housing 49‘a1so serves to provide bearings ing cylinder 46 similar in construction to the wood graining cylinder l9 described above. Suit 10 able gears 49 and 50 may be keyed to the shafts 45 and 4], respectively, in order to insure that the rolls 46 and 42 will be driven synchronously. The shaft 45 extends through the wall of the housing 40 and is provided at its outer end with 15 a sprocket wheel 52 which is connected by means of a suitable sprocket chain 53 with a sprocket wheel 54 keyed to the end of the stub shaft 29. Inasmuch as has been explained above, the stub shaft 29 is driven by the drive shaft l8 which 20 serves to drive the ?rst wood graining cylinder l9, it will be apparent that the second wood drive shaft carries a bevel gear 26 which meshes graining cylinder 46 is likewise synchronously operatedwith the ?rst mentioned wood graining cylinder. Consequently, it will be readily appre 25 ciated that the gelatinous transfer rolls 36 and 42 will likewise be driven in synchronism. Inas much as the housing 40 is supported for pivotal movement about the shaft 29, it will be readily appreciated that this housing may be pivotally 30 moved about the axis of this: shaft without in any way disturbing the synchronous drive through the sprocket chain 53. Consequently, the relative vertical position of the transversely extending gelatinous transfer roll,may be accurately regu lated without materially interfering with the syn with a bevel gear 28 serving to drive a short stub chronous operation thereof with respect to the aligned bearings l6 and H, respectively. The bearings l6 serve to provide a mounting for a drive shaft l8 and the drive shaft 18 carries an etched metal wood graining roll l9 locked there to in driving relation, between the bearings l6. 30 The lower end of the drive shaft 18 has a bevel pinion 20 secured thereto which through a bevel gear 2|. connects the ,drive shaft in driving rela tion with a shaft 22 driven by a suitable electric motor 23 which motor may be conveniently mounted on the table it]. The upper end of the shaft 29 which is journalled for rotation in a suitable support member 39 rigidly connected to 40 the upper portion of the housing l5. The use and function of this apparatus will be more clearly understood from the following descrip gelatinous transfer roll 36. The housing 40 has an operating link 60 pivot ally connected thereto at the point 6| which op 40 erating link has its lower end pivotally connected to a ?tting 64 slidably mounted on a vertically tion. A shaft 35 is journalled for rotation in the extending operating rod 65. The operating rod bearings I1 and has secured thereto a gelatinous transfer roll 36 which frictionally engages the spring pressed foot pedal 66 which is preferably 45 surface of the roll l9. The roll I9 may have the pression coil spring 61. A suitable resilient lost motion connection between the actuating rod 65 and the ?ttingv 64 is provided by means of com pression coil springs 61 surrounding the shaft 65 50 surface thereof engraved or etched in the manner in which photogravure plates are produced in 50 order that ‘a plurality of relatively minute re cesses will be formed therein which recesses 65 is pivotally connected at its lower end to a constantly urged upwardly by means of a com on either side, of the ?tting 64. , The lower end serve‘to retain ink applied to this roll by suitable of the lower compression coil spring 61 may abut conventional means such as are commonly used against a projection 68 formed integrally with the housing l5 and the upper end of the upper compressionv coil spring 61 may be con?ned by a in this general art. A scraper or doctor blade 55 (not shown) is mounted in the housing l5 and has the edge thereof in engagement with the roll I9 in order to scrape: the surplus ink therefrom before this roll comes into contact with the gelat inous transfer roll 36. As is well understood in 60 apparatus of this general character, the transfer roll 36 will serve to remove the minute bodies of ink from the surface of the etched roll l9 and carry this ink to apply the same to the article upon which it is desired to produce the wood 65 grain. The gelatinous transfer roll, as is con ventional in the art, likewise has a doctor blade (not shown) associated therewith which serves to maintain the surface of the roll clean for the pair of lock nuts 10 threada ly secured on the end of the operating rod 65. ~From the foregoing, it will be readily appre ciated that as the foot pedal 66 is depressed, the ?tting 64 will be resiliently moved downwardly 60 carrying with it the link 60. Inasmuch as the link 60' is pivotally connected to the housing 49, it will be readily understood that the housing 40 will be bodily swung about the axis of the stub shaft 29 and moved downwardly toward the 65 Work as will hereinafter be explained in detail. A work feeding roll ‘H is journalled for free _ reception of ink from'the etched roll I9. The support member 30 has an upstanding 70 rotation upon a pin 12 which pin is carried by a slide 13 mounted for transverse reciprocatory projection 3| formed integrally thereon, which movement in‘ a guideway 14 rigidly supported by projection has an aperture therethrough which serves not only-to provide a bearing for the stub main frame ‘Ill. The slide 13 has its lower sur— face, recessed to receive one arm of a bell crank shaft 29 but serves the purpose of providing a pivotal‘ mounting for a casting 39 which serves 75 which bell crank ispivotally mounted upon the main frame ID at the point 16. The-lower 7% 2,108,155 end of the bell crank arm 75 is pivotally con nected to the ?tting 64. Consequently, it will be seen that upon downward movement of the op erating-shaft 65, the idle fed roll ‘H will be moved forwardly toward the peripheral surface of the gelatinous transfer roll 36 and, as has been ex plained above, downward movement of the actu ating rod 65 likewise serves to move the housing 40 downwardly consequently, bringing the gel 10 atinous transfer roll 42 into engagement with work carried by the idle roll 7!. It will be noted that the horizontal axis of the wood graining unit has the etched metal roll thereof, which is mounted on the shaft 45, posi 15 tioned in a bearing block 86, the position of which may conveniently be adjusted by means of the adjusting screw 8!. The opposite end of the shaft 45 may be conveniently positioned by means of an adjustable yoke or arm 82 se 20 cured to the housing 40 by means of a bolt 83. Consequently, it will be appreciated that by ad justing the screw 8| and the yoke 82, the work ing pressure between the etched roll 46 and the gelatinous roll 42 may be accurately regulated. 25 It will be appreciated that this adjustment need be effected only through an extremely narrow range and consequently the intermeshing of the gears 49 and 50 is not materially affected there by. It will likewise be appreciated that a similar construction may be employed in connection with the etched roll it and gelatinous roll 36 if de sired. Such adjustments have been found de sirable in some instances because in order to get a satisfactory reproduction, the working pres 35 sure between the etched roll and the gelatinous roll has in particular installations been found extremely important. From the foregoing description, it will be read ily apparent that a curved surface molding 99 may 40 rapidly and conveniently be wood grained by‘ means of the machine of the present invention. In order to reproduce wood grained images upon the molding 90, the table I2 is ?rst adjusted to a position such that it serves to support the base portion of the molding to which it is desired to apply the wood grain. The wheel 'H has a pe ripheral con?guration adapted to smoothly en 50 gage the rear side of the molding 90 in order to feed the same into contact with the rolls. The apparatus as a whole is preferably driven con tinuously and the molding 9!] may be placed upon the feed roll ‘H and it will be understood that when the pedal 66 is in upward position, the molding mounted on the feed roll will be in a 55 position out of contact with the both of the rolls 42 and 36. The pedal 66 may then be depressed which movement will through the spring Bl transmit downward force to the ?tting 64 which downward force will be somewhat cushioned due 60 to the lost motion connection provided by the springs 61. As the ?tting $4 is moved down wardly, it will simultaneously e?fect downward movement of the entire housing 48 bringing the gelatinous transfer roll 42 into contact with a 65 portion of the upper curved surface of the mold ing 90 and at the same time will, through the bell crank arm 75, serve to move the feed roller ‘H upwardly to bring the face portion of the molding into contact with the gelatinous roll 35. 70 It will be clear that as the pressure upon the pedal 66 is increased, the housing 40 will be moved downwardly thus deforming the surface of the gelatinous roll 42 to cover a substantial area of the curved surface of the molding. The 75 pressure on the foot pedal 66 may be maintained 3 in 'such'a manner that the zone to which wood graining is applied by the roll 36 will mate with the zone to which wood graining is applied by means of the roll 42. Inasmuch'as the pressure on the foot pedal may be very accurately con trolled, the molding 90 may have wood graining applied thereto in a single continuous operation without any overlapping or space between the zones acted upon by the transfer rolls. It has been found that these zones can be 10 mated sufliciently accurately in practice so that wood grain of one zone will constitute a Virtual continuation of the pattern formed by the wood grain of the other zone. In order to obtain best results, it has been found desirable to utilize 15 matched wood grain rollers whereby the pattern formed by one roll will mate clearly with the pattern formed by the other and constitute a sub stantial continuation. thereof thus virtually ob literating any line of demarcation between the 20 respective zones. It will be readily appreciated that although but one speci?c embodiment of the invention has been illustrated and described herein, many other and various modi?cations thereof falling within the 25 scope of the invention as de?ned in the sub joined claims will become clearly apparent to those skilled in the art. I claim: 1. In a machine for wood graining molding, a v30 pair of transfer rolls, means for supporting a molding to be grained with respect to said rolls, and means for effecting movement of one of said rolls and said supporting means to bring said rolls simultaneously into engagement therewith. 35 2. In a wood graining machine, means for sup porting a molding to be wood grained, a pair of transfer rolls for applying wood graining thereto, one of said transfer rolls adapted to apply wood graining to a portion of the surface of said mold 4.0 ing, the other roll serving to apply wood graining to an adjacent portion of the surface thereof, means ‘for urging one of said rolls into engage ment with the work, means for moving the work into engagement with the other of said rolls and 45 means for driving said rolls in synchronism. 3. In a machine for wood graining moldings having curved surfaces, a pair of wood graining units each including a metallic wood graining roll and a resilient transfer roll, means for mounting one of said units for pivotal movement with re spect to the other, and means for‘ driving said units in synchronism. 4. In a machine for wood graining moldings, a pair of wood graining units each comprising a metallic wood graining roll and a resilient trans fer roll, an idle roller adapted to support a mold ing to be wood grained, means for moving said idle roller toward one of said transfer rolls, and simultaneously actuated means. for moving the other transfer roll toward said idle roll. 5. Apparatus for applying wood graining to moldings including in combination a pair of wood graining units each including an etched metal wood graining roll and a resilient transfer roll, 65 the axes of the rolls of one unit being substan tially inclined to the axes of the rolls of the other unit, one of said units being operated for pivotal movement with respect to the other and a motor serving to drive all of said rolls in synchronism. 70 6. Printing apparatus including a pair of trans fer rolls, one of said rolls being bodily movable with respect to the other, a work supporting member movable to force an article to be printed into engagement with one of said transfer rolls 75 4 2,108,155 and means for moving the other of said transfer rolls into engagement with the article to be printed. supporting member, means for actuating said member to force work carried thereby into en gagement with one of said rolls into engagement with the article to be printed and a member for v 7. Printing apparatus including a pair of trans fer rolls, one of said rolls being bodily movable with respect to the other, means for driving said rolls in synchronism, a movably mounted work simultaneously actuating said two last mentioned 5 means . ' ' ROY E. WOOLENS.