Abstract: A method and apparatus for imparting a decorative strip onto the sidewall of a cured tire. The tire is sealed between a pair of chucks and inflated. The sidewall portion of the tire to be decorated is maintained in a flat horizontal posture by the chucks and the inflation pressure. The tire is then rotated while a gun, having a nib is contact with the tire sidewall, dispenses a paint directly onto the tire. A heating element for curing or partially curing the paint is maintained in juxtaposition to the sidewall for heating the paint strip as it passes thereunder.

Abstract: A method and apparatus for impregnating a porous substrate with foam, the method comprising transporting the porous substrate through a nip region defined by a rotating foraminous drum and a foam discharge head, the foam discharge head comprising one or more discharge openings, supplying foam to the discharge head with pressure sufficient to discharge foam through the discharge openings to impregnate the porous substrate, and urging the foam discharge head and the foraminous drum toward each other to compress the porous substrate as it passes the discharge openings. The foam discharge head is mounted to a hinged plate to enable the urging of the discharge head toward the foraminous drum.

Abstract: A method and apparatus for impregnating a pourous substrate with foam the method comprising transporting the porous substrate through a nip region defined by a moving foraminous surface such as a rotating foraminous drum and a foam discharge head, the foam discharge head comprising one or more discharge openings, where the transport of the porous substrate through the nip region causes the porous substrate to be compressed as it passes the discharge openings, and supplying foam to the discharge head with pressure sufficient to discharge foam through the discharge openings to impregnate the porous substrate. A surface support conveyor is positioned between the foraminous surface and the porous substrate.

Abstract: An apparatus for glazing an article of earthenware or porcelain such as e.g. a plate or the like includes a capstan with a plurality of arms each supporting a workpiece holder for at least one glaze vessel which is rotatable about its axis and tiltable relative to the supporting arm. Before being fed to a glazing station, the article is accurately aligned and imprinted with a mark. A suction unit transfers the article from the centering station to the glaze vessel which is rotated and tilted so as to dip the article in a glaze mass. After surface drying the glaze on the article by initially holding it vertically and then horizontally, the article is transported to a transfer station for placement on a spongy belt which removes excess amount of glaze from the bottom area of the article. The glaze vessel, after being cleared by removing the plate, is refilled with fresh glaze mass in a charging station which is arranged prior to the glazing station.

Abstract: An applicator for applying various kinds of paint, liquid adhesives and the like to a surface in such a way that they are spread evenly and uniformly on the surface. The applicator possesses a cylindrical member which has an applicating liquid reservoir formed in it and a conduit to carry the applicating liquid from the outside into the applicating liquid reservoir, and internally apply pressure on a resilient closure which maintains a slit normally closed, such internal pressure causes the slit to open along its entire length when the internal pressure of the applicating liquid in the applicating liquid reservoir is more than a predetermined level. The cylindrical member is designed in such a way that the slit opens equally along its entire length.

Abstract: A method and apparatus for impregnating a porous web with a chemical. The impregnating method includes applying a vacuum to one side of the web sufficient to evacuate air from the web, applying impregnating chemical into the web in a selected pattern on the same side of the web, followed by drying the web. The apparatus includes a vacuum chamber for evacuating air from the web, a manifold for applying the impregnating chemical into the web located on the same side of the web as the vacuum chamber and a stencil for restricting the application of the chemical to selected areas of the web.

Abstract: A method and apparatus for automated dispensing of liquid materials onto a workpiece. The automated dispensing apparatus has a nozzle assembly which includes a flexible tube that is surrounded by a coil spring. The apparatus may be programmed to slide the nozzle assembly along a surface of a workpiece as liquid materials are discharged from the tube. The spring prevents kinking of the tube and protects the tube from abrasive damage, and also biases the lower end of the tube toward a position in contact with the workpiece.

Abstract: In a process and a device for the impregnating and/or coating application of liquid, optionally foamed substances, through a slot the parts of the device performing the application are arranged to form a surface almost plan-parallel to the surface of the sheet material to be subjected to the application so that the trailing end of the application device is supported by the sheet material. Between the application device and the surface to be coated, a hydraulic pressure is generated which floatingly supports the device and which has a uniformizing effect on the application layer.

Abstract: A system having a coating station comprised of a dispensing assembly and a fluid collection head is useful in a method to precisely coat reagents on porous supports for use in diagnostic devices. In the method, a cover having an aperture therethrough and the porous support secured to its underside covering the aperture is positioned in the coating station between the dispensing assembly and the fluid collection head. The reagent is dispensed from a cannula in the dispensing assembly onto the portion of the porous support exposed through the aperture of the cover. A reduced pressure in the fluid collection head pulls fluid through the porous support. The system is automated by providing a guide channel for holding a plurality of covers in correct orientation and a magazine for holding a stack of covers. An indexing arm delivers the bottom-most cover in the stack to the guide channel and urges covers in the channel along its length.

Abstract: A depilatory wax automatic dispenser on depilatory strips essentially comprising: a basement for a pot; an electrical resistance immerged in said pot; a cavity made in said basement near said resistance; a batcher cylinder closing said cavity; a device to positionate a strip at a preselected clearance from said cylinder; at least one outlet port in said cylinder to dispose wax on said strip slipping below said port; means for manoeuvering said cylinder from a first closing position to a second opening position for said port; elements for disposing said strip in a horizontal attitude when said cylinder is in said second position; electrical feeding control means for said resistance.

Abstract: A color filter dyeing apparatus for dyeing a color filter formed on a substrate comprises a chuck for holding the substrate on which the color filter is mounted, a dyeing solution receptacle in intimate engagement, by means of a sealing member, with the chuck or the substrate, and forming a container for containing the color filter therein, an inlet for supplying the dyeing solution into the container, and means for discharging the dyeing solution from the container.

Abstract: A coating device including a supply roller, a coating applicator, a driving roller and a takeup roller all cantilever mounted on a surface of a vertical panel inside a casing. A continuous base member to be coated on one side if sprially guided by guide rolls from the supply roller past the coating applicator, past the driving roller and onto the takeup roller. The base member is contacted by the rollers on the side opposite the coating.

Abstract: A spreader tool for use in spreading a bed of predetermined thickness of cementitious material on the floor surface prior to laying tiles wherein the tool is composed of a frame having front, rear and side walls and which is open at the top and the bottom so that a charge of the mix may be positioned between the frame members and moved across a floor with the material being discharged through a mouth formed in the frame by an inclined rearwardly extending septum and wherein a rake is provided in the discharge zone of the frame so that the bed being spread on the floor has grooves in the top surface of it.

Abstract: A method of fabricating a solid state device having chemically bound arsenic and phosphorous includes carrying out liquid phase epitaxial growth in the presence of partial pressures of arsenic and phosphorus.

Abstract: An upper crucible part comprises several chambers containing a supersaturated growth solution with which a semiconductor wafer is coated with a monocrystalline semiconductor layer by way of epitaxial growth. The semiconductor wafer is contained in a cassette-shaped lower part which is moved underneath the upper part. The coating itself is effected within a protective-gas atmosphere within a reaction space which, by a diffusion furnace, is heated up to a temperature which is very exactly adhered to.

Abstract: The crucible is of the type in which substrates to be epitaxially coated are disposed in a slide comprising a substrate carrier (7), whose displacement permits of bringing the substrates (9) successively into contact with different baths of epitaxy. It comprises a compartment (2), in which tightening slides (11) and solution-containing slides (12) are alternately stacked, each of the latter slides having a cavity receiving a solution (14) and merging at the lower part of the said slide (12). The tightening slides (11) close the lower part of the cavities (45). The slide comprising a substrate carrier (7) can be translated between a rear position in which it is disengaged from the stack and a front position in which, after having driven out the lower slide of the stack, it is situated under this stack.

Abstract: Apparatus for uniformly coating thin layer chromatographic plates. A plate holder secures a plurality of chromatographic plates while a metering device with an adjustable doctor blade is drawn over their surface at a uniform speed by a variable speed motor.

Abstract: An apparatus for adjusting the thickness of a resin plate formed in a resin plate making machine comprising stacked, wedge-shaped members, each wedge-shaped member having an inclined surface slidably contacting the other inclined surface, the top most member being connected to either spacers positioned above a rigid base plate on which the resin plate is formed, or to the rigid base plate itself, for adjusting the height of the spacers relative to the base plate as the wedge-shaped members are moved relative to one another in the direction of inclination of the inclined surfaces.

Abstract: Apparatus is provided for applying a sealing composition to a road surface. The apparatus includes supply means for the sealing composition and an applicator having a pressure chamber having adjustable-gap exit openings adjacent the road surface and having doctor blades which, when appropriately set, apply the composition to the road surface to a uniform and preset thickness across the width of the applicator. The apparatus includes means for propelling the applicator over a road surface.

Abstract: A container-to-tape dispenser for drywall joint compound intended for use in a point-of-purchase container holding a supply of the compound. The dispenser includes a main body having a generally rectangular elongated base and an inverted generally U-shaped top portion. The main body is removably mounted in and extends between diametrically opposed tape entrance and exit slots formed in the container. A longitudinally extending channel is formed between the base and the top portion. An opening is formed in the top portion to permit a supply of the compound to flow into the channel. The top portion further has a pair of identical spaced side extensions, with a pair of spaced side grooves being formed between the base and said extensions. The grooves function as guides when pulling a length of tape through the dispenser and maintain the edges of the tape relatively dry and free from compound.

Abstract: A coating die is adapted to apply a number of materials onto a web from a single coating slot by the use of a movable cam in the die to alternately connect the coating slot to one or the other of a pair of inlet ports and seal the other port. A rotary cam facilitates rapid change of materials from the coating slot onto a continuously moving web.

Abstract: The invention relates to a crucible for growing epitaxial layers having a chemical composition formed by several chemical elements, of which at least one is volatile, by the method of epitaxy from the liquid phase, comprising an elongated support (72) on which a movable part (73) slides longitudinally, with the elongated support comprising at least one recess for accommodating a substrate (76) on which at least one epitaxial layer is to be deposited. The movable part (73) comprises at least one cavity (77) receiving a mother source (79) formed by initial material for epitaxy with the cavity having on the surface adjoining the elongated support a lower opening whose dimensions correspond to the dimensions of the substrates (76) present therein. At least one receptacle (80) accommodates a source for each volatile element of the chemical composition.

Abstract: The invention relates to a crucible for the growth of epitaxial layers of chemical compounds formed from several chemical elements by means of epitaxial growth from the liquid phase comprising an elongated support (72), on which a movable part (73) slides longitudinally, the elongated support comprising at least one recess for accommodating a substrate (76) on which is to be deposited at least one epitaxial layer, the movable part comprising at least one cavity (77) receiving a mother source (79) formed from initial epitaxy materials, the cavity having on the surface adjoining the elongated support a lower opening whose dimensions correspond to the dimensions of the substrate (76) present therein.

Abstract: A method of and apparatus for the hot melt or other fluid coating and the web handling of lightweight low web-tension-supporting, non-woven and similar materials, having a novel nozzle region using entrance and exit web-supporting surfaces and positioning in order to compensate for web deflection caused by the fluid coating ejection forces that otherwise render the coatings non-uniform and destroy sharp leading and trailing edges of intermittent coatings.

Abstract: An apparatus capable of simultaneously coating one side of each of several surface type fastener tapes or the like traveling longitudinally in coplanar, parallel spaced relation to one another. For simultaneously coating two fastener tapes a pair of terminal coating units and one intermediate coating unit are arranged alternately with the fastener tapes. Each fastener tape travels with its opposite longitudinal edge portions slidably engaged in recessed guideways defined in the terminal and intermediate coating units. A coating material is supplied through passageways in the coating units onto the surfaces of the fastener tapes traveling therebetween. Mounted to the coating units so as to extend across the fastener tapes, a doctor blade has its scraping edge held against the surfaces of the tapes.

Abstract: A disposable tint pack assembly is provided for use in a contact lens tinting apparatus. This disposable assembly includes a plurality of disposable packages, each for containing a supply of a given fluid material for use in a contact lens tinting process carried out by the apparatus. A fluid dispensing apparatus is coupled with each of these packages and is selectively operable for dispensing the fluid contained therein, preferably in premeasured, incremental quantities. A tray-like carrier member is provided for supporting and locating all of the packages in predetermined relative positions for use in a given order in the lens tinting process carried out by the tinting apparatus. A retaining structure is provided for releasably holding each of the packages in the desired position in the carrier tray. The invention also extends to individual portions or sub-assemblies of the foregoing tint pack assembly.

Abstract: A semiconductor encapsulating apparatus including a positioning apparatus positioning an encapsulant premold (preformed piece or pellet) in contact with the semiconductor and the curing apparatus through which the semiconductor and encapsulant are passed to cure and thereby encapsulate the semiconductor. The encapsulating apparatus may include a vacuum chamber to degass the encapsulant prior to curing, a robotic arm to position an encapsulant premold in contact with the semiconductor and encapsulant premold forming apparatus including a die engaging a plastically deformable strip to form therein a mold. Also included may be a mold filling dispenser, a mold solidifying bath which may include liquid nitrogen, a solidified premold ejecting roller and a premold storage tray. Also disclosed are roller and spray coating apparatuses adapted to coat an inner surface of the mold with a release agent thereby to promote subsequent premold release.

Abstract: In a covered graphite slider apparatus for the liquid phase epitaxial growth of mercury cadmium telluride, this invention shows the addition of an improved wipe-off arrangement positioned in tandem with the CdTe substrate upon which the HgCdTe epitaxial layer is grown. This arrangement includes the providing of a discardable CdTe drainage apron adjacent the substrate for preventing residual growth solution from migrating back onto the substrate which has just been wiped-off by the LPE slider.

Abstract: An apparatus for manufacturing a laminated unit of ceramic green sheets comprises an endless belt, and an applying apparatus provided at a predetermined position on the running path of the endless belt. The applying apparatus includes a reservoir for storing a ceramic slurry and a moveable blade. When the belt runs with the blade spaced a predetermined distance from the top surface of the endless belt, the ceramic slurry flows out through a gap between the blade and the belt and, thus, is applied on the belt to a predetermined thickness. The applied ceramic slurry is dried by a drier so as to form a ceramic green sheet. A conductive paste is printed on the top surface of the ceramic green sheet by a printing apparatus. The printed conductive paste is dried by a drier.

Abstract: A slider/stator device for the growth of thin film material, such as mercury cadmium telluride, in which the substrate, thin film and growth solution are kept free from impurities by use of sleeves, made, for example, from sapphire, in order to prevent contamination and adhesion of the growth solution to the slider assembly.

Abstract: A centrifugal chamber for coating slides with a sedimentation product of a sample fluid includes an upper part with at least one cylindrical sample chambers located therein, and a slide resting in sealed fashion against one end of the sample chambers. The slide is mounted on a flat surface of a carrier plate and is releasably connected with the assembly. The releasable connection between the upper part of the centrifugal chamber and the carrier plate which holds the slide includes a locking slide operable with one hand, with locking openings, and with the slide being displaceably mounted in the carrier plate in a longitudinal direction thereof and being further connectable with matching parts of the upper part which engage the locking openings.

Abstract: The process serves to impregnate planar carrier materials, especially those in the form of continuous webs, with synthetic resin to manufacture a stackable product, such as, e.g., paper-prepregs to be used for the manufacture of synthetic-resin-laminated panels.For the process, a highly viscous liquid synthetic resin coating (5) is applied to one surface of the carrier material (1), the coating is heated to a higher temperature, during or after which, respectively, the synthetic resin (4) of the coating (5) is at least in part absorbed by the carrier material (1). The carrier material (1') thusly coated with synthetic resin is then briefly subjected to such pressure, e.g., with the aid of a pair of pressure rollers (9), that the synthetic resin (4) evenly permeates the carrier material. For the concurrent impregnation of several carrier materials (1), the superposed carrier materials (1') coated with synthetic resin can be subjected to mechanical pressure.

Abstract: Apparatus for applying partial surface coatings to textile substrates, particularly adhesive compounds in fixing inset technology. A cylinder rotatable about a cylindrical axis has inner and outer cylindrical surfaces with perforations extending through these surfaces. A coating head mounted inside the cylinder has a coating nozzle adjacent and facing the inner surface. The head includes a feed duct, a main duct extending from the feed duct and an opening chamber extending from the main duct. The opening chamber is bounded by two sealing lips adapted closely to the inside of the cylinder, supported by a mounting structure for the chamber and defining an outlet opening therebetween for controlling flow from the chamber. The structure has rods attached to the lips and adjustably coupled to the coating head to enable the opening to be adjusted in width.

Abstract: An elongated paste containing box is provided having a shaft supporting a roll of wall covering sheet adjacent the rear face of the rear wall of the box. A bottom wall is pivoted for vertical movement relative to the bottom edge of the front wall of the box and is spaced from the bottom edge of the rear wall of the box so that a sheet of wall covering can be passed through the bottom of the box on the bottom wall and in contact with a body of adhesive paste contained therein. A linkage for applying a compressive force to opposite ends of the bottom wall is provided to permit a desired bow in the bottom wall to be produced and thus maintain the bottom wall in a desired, vertically spaced relationship to the front wall of the box to obtain either a uniform or a desired non-uniform deposit of paste from one lateral edge to the other lateral edge of the wall covering sheet passing through the box.

Abstract: An applicator for applying foamed treating liquor across the flat width of a traveling textile fabric or like substrate includes an arcuate housing having an arcuate interior partition wall intermediate a foam inlet port and a foam emission nozzle opening in the housing to define a distribution chamber providing a turning foam pathway from the inlet port about the curved edge of the partition wall to the emission opening. The curved edge of the interior wall is parabolic in shape to define substantially all possible foam flow paths from the inlet port linearly to the curved edge and linearly the respective shortest distances therefrom to the emission opening to be of substantially the same total length. Accordingly, foam residence time within the distribution chamber is substantially constant regardless of the flow path assumed, to control foam degeneration to occur uniformly for uniform widthwise treatment of the traveling fabric.

Abstract: Apparatus for applying fluid additive to a stream of fibrous material such as a filter tow. The apparatus provides structure for blowing air into the filter tow during or immediately after the application of the fluid additive, a plasticiser; this foams and distributes the plasticiser in the tow. Air may be delivered from a porous plate closely adjacent to the path of the tow or from nozzles in an air injecting unit. Alternatively air may be used to foam plasticiser at a location remote from the tow and foamed plasticiser subsequently conveyed to and into the tow by a roller.

Abstract: Coating apparatus (10) is disclosed which includes a foam table assembly (A), a coating roll (D), and an automatic trough control system (58). A blade assembly (B) having a coating blade (44) may be selectably positioned over a foam table (20) of the foam table assembly (A) or the coating roll (D) depending upon the type of coating technique desired. A roll mandrel assembly pivotably supports the coating roll (D) by means of a pair of pivot arms (124, 126). Air cylinders (138, 140) provide a constant pressure on the pivot arms which holds the coating roll (D) in a coating position under the constant pressure. The coating roll deflects upon the passage of a thickened seam portion (S) of the fabric. During the deflection, the constant pressure is maintained on the coating roll. The support arms (124, 126) are carried on carriages (102, 106) to move the support arms laterally to accommodate different length coating rolls.

Abstract: A capped printing plate making machine is used for making flexographic capped printing plates. The machine includes a pair of troughs for applying two layers of photopolymerizable resin materials simultaneously. The troughs are so designed that actuation of one trough to permit its material to be applied automatically results in the other trough being positioned and opened for the application of its material.

Abstract: An apparatus for tinting a soft contact lens which is received in a fixture including an inlet and an outlet for directing predetermined fluids therethrough for engagement with predetermined surfaces of the contact lens. The apparatus comprises a carrier for carrying the fixture in a predetermined orientation; a guide arrangement for defining a predetermined path of travel; a motive assembly for propelling the carrier along the predetermined path; and a plurality of fluid application stations arranged along the path, each fluid application station including a fluid release member. The guide track and the motive assembly cooperate for aligning the inlet of the fixture with each fluid release member sequentially as the carrier travels along the predetermined path, for delivering a quantity of fluid to the fixture and the contact lens therein.

Abstract: A method and apparatus for coating the back of carpet products providing improved control over coating weight, uniformity, and penetration. A layer of adhesive is formed on a rotating coating roll, and the upper edge of an applicator blade is brought into contact with the coated roll. The layer of adhesive is transferred to the upper edge of the applicator blade and flows under the effect of gravity to the lower edge of the blade. The back of the carpet is then pressed against the lower edge of the blade, simultaneously applying and spreading the adhesive.

Abstract: Apparatus and method for a coating machine of the type which comprises a vertically disposed coating blade (30) beneath which a traveling web (W) passes through the coating machine for application of a coating compound. A trough feed system (48) supports the weight of the coating compound in close proximity to the coating blade to define a metering gap (60) for metering the coating compound. An adjustable mounting assembly (32, 34) provides adjustment of the trough longitudinally with respect to the coating blade to thereby vary the width of the metering gap. A pair of adjustable end dams (B) are carried within the interior of the trough (48) for containing the width of the coating compound to that generally of the fabric (W). The end dam comprises an adjustable frame (C) having an adjustable frame section (72) which bears against the trough and adjusts to the shape of the trough when moved. A relatively stationary vertical leg (70) is braced against the coating blade.

Abstract: Apparatus for carrying out liquid phase epitaxy growth comprising a melt holder having a predetermined number of cells for liquid phase melts for growing a number of epitaxial layers on a horizontally disposed substrate. The substrate is supported by a holder which is displaceable in order to bring the substrate into successive contact with the melts. A melt filler is disposed above the melt holder and contains a number of compartments corresponding to the number of cells in the melt holder and of greater volume than that of the cells for storing batches corresponding to several melts, the melts being supplied from the compartments to the cells through a displaceable perforated plate. A melt collector is arranged beneath the melt holder for collecting the melts from the cells.

Abstract: An apparatus and method for applying a smooth uniform coating to a web (W) having variations in thickness and density and surface irregularities is disclosed. The invention includes a vertical floating pressure table (B) which supports the traveling web (W) against a transfer roll (20) and a scrape blade (46). Coating material (C) metered by a doctor blade (34) is applied to the transfer roll (20) at (40) and then applied to the web in a uniform layer (78). The pressure table (B) is supported against the web by a counter-balancing linkage arrangement (D) which maintains a constant uniform pressure on the table (B) and web (W) regardless of the vertical movements of a table platform (60) in response to web variations an irregularities. A smooth uniform coating (80) is provided.

Abstract: In a covered graphite slider apparatus for the liquid phase epitaxial growth of mercury cadmium telluride this invention shows the addition of a wipe-off well into the moving part of the slider apparatus, which well contains pieces of CdTe to assist wipe-off of HgCdTe following LPE growth.

Abstract: An array of at least three parallel rolls is provided. The rolls are constrained against each other to provide an elongated coating chamber through which passes a web entrained on at least one of the rolls. As it exits from the chamber, the coated web surface is wiped by another of the rolls, whose surface is entering the chamber at that point.

Abstract: A device for applying a treatment medium, especially in foam form, to a running web of material, especially a rug web, with an application beam extending transversely to the web of material, the application beam having a longitudinal slot, through which the treatment medium emerges onto the web of material. On the side opposite the slot an elastic cushion which presses the web of material against the sliding surface of the application beam is arranged on the back of the web of material. The cushion may be an inflatable elastic hollow body or a foam material cushion.

Abstract: An improved melt dispensing liquid phase epitaxy (LPE) boat is disclosed. It comprises two separable compartments. A supply-melt reservoir and a growth-melt bin separable by means of a separation slider for separating the two compartments prior to the actual process of epitaxial growth. In a further improvement, the substrate holder has a melt collection bin for receiving used growth-melt.

Abstract: A solution growth apparatus for conducting an epitaxial growth of a compound semiconductor crystal from solution by relying on the temperature difference technique at a constant growth temperature and on a mass production scale without deranging the control of the growth temperature applied externally of the growth apparatus and with the application of only a small heating power and only a small cooling power, by enhancing the thermal exchange efficiency through the provision of heating means, via an insulator, for the melt-containing reservoir provided on the growth boat housed within a quartz reactor and by the provision of cooling means at the bottom of the boat within the reactor.

Abstract: Apparatus is known for controlling the deposition of a liquid onto a moving surface comprising a reservoir having an outlet, and a curved guide member downwardly extending from above and adjacent to the outlet and having an underside onto which a jet of liquid can be discharged from the outlet, the guide member being oriented so as to be capable of causing liquid to flow down the member on its underside so that its direction of flow approaches the direction of travel of a moving surface.

Abstract: Apparatus for the coloring or tinting of one or more selected areas of a soft or flexible contact lens to precise measurements comprises a support means formed to closely match one of the surfaces of the lens and a mask means adapted to operatively associate with the support means to delineate said one or more selected areas by providing one or more peripheral zones of compression within the lens to prevent the migration of an applied coloring or tinting medium thereacross. In use the lens is positioned on the support means so that one of the surfaces thereof closely matches the support means, the mask means is arranged to provide one or more peripheral zones of compression delineating said one or more selected areas, and a coloring or tinting medium is applied to at least one selected area.