IL34748A - Device for discriminating and/or identifying jewels - Google Patents

Description

Another object of the present invention is to provide a novel method and device for testing materials having optical properties without relying on the skill or Still another object of the present invention is to provide a novel method and device for testing materials having optical properties such as and refraction without requiring any elaborate procedure or Still another object of the present invention is to provide a novel method and device for testing materials such as jewels whereby a visible record indicative of any slight degree of difference inherent in the material is obtained for tion and subsequent A further object of the present invention is to vide a novel method and device for testing materials such as jewels wherein the material to be tested can be instantaneously set to the and a record can be obtained even if the material is mounted on a ring or the like A yet further object of the present invention is to provide a novel apparatus for testing materials such as wherein all of the required components are combined in one whereby a visible record of the material can be obtained These and other objects of the present invention can be achieved by a novel method for testing materials such as jewel having optical properties such as and which method comprises shining a beam of electromagnetic preferably of light rays in a range of wavelength reflectable and retractable by the onto the material such as a and on a photographic an image of distribution of the electromagnetic radiation beam shone on the the photographic material such as a graphic film may be placed on the crown side of the jewel having a plurality of and the electromagnetic radiation beam such as light rays may be shone on the jewel from the culet side the photographic material is a Polaroid film which can be instantaneously developed and and the electromagnetic radiation beam is obtained from a miniature lamp of a known In another aspect of the the above described objects are also achieved by a novel device for testing materials such as jewels having a plurality of the device ing an enclosure forming a dark means for holding and tioning the material inside of said a source of tromagnetic radiation beam directed onto the material to be and a photographic material for recording an image of the magnetic radiation distribution of the beam shone onto the the above mentioned means for holding and positioning the material to be tested is made adjustable as to the position from the outside of the the above mentioned means for holding and positioning the material is made into a fixed and a separate focusing means controllable from the outside of the closure may be provided inside of the a shutter system for rendering an adequate exposure time on the photographic be provided inside of the and a shutter button may be provided on the front panel of the Likewise as in the method according to the present the photographic material such as a photographic film is preferably placed on the crown side of the jewel having a plurality of and the electromagnetic radiation beam is preferably shone onto the jewel from the culet side the above described beam electromagnetic radiation source may be made in the form of a miniaturized lamp attached on an end of the positioning device for the material in a manner aligning with the so that the light beam from the miniature lamp is shone on the The and utility of the invention will be better understood from the following description with respect to preferred embodiments when read in tion with the accompanying wherein like parts are signated by like reference BRIEF DESCRIPTION OF THE DRAWINGS In the FIGURE 1 is a schematic diagram to be employed for explaining the fundamental principle of the present FIGURE 2 is a diagram showing a distribution of reflected or refracted light beams obtained by a device schematically dicated in FIGURE FIGURE 3 is another schematic diagram to be employed for explaining the fundamental principle of the present FIGURE 4 is also a diagram showing another tion of reflected or refracted light beams obtained by a device schematically indicated in FIGURE FIGURE 5 is a perspective view of an apparatus which constitutes an embodiment of the present FIGURE 6 is also a perspective view showing the same apparatus illustrated in FIGURE which is partly frustrated so that the inside components can be seen more FIGURE 7 is another perspective view showing a struction of a jewel positioning head employed in the apparatus shown in FIGURES 5 and 6 FIGURE 8 is a partial sectional view showing an paratus which constitutes another embodiment of the present and FIGURE 9 is a sectional view rather schematically showing another construction of the jewel holding and ing device which also may be employed in an apparatus according to the present DETAILED DESCRIPTION OF THE INVENTION Referring now to 1 showing an example of a device for practicing the method according to the present invention for the purpose of explanation of the fundamental principle of the there is indicated a cylindrical body 1 having a top cover 2 and a bottom plate 3 so that a dark room is thereby Inside of the cylindrical body a transparent plate 4 having a glassy surface to mount a jewel A is A source of an electromagnetic which is a visible light in this is formed into a unit 5 including a lamp a condenser lens and a small hole 8 for passing a light The light source 5 is provided through the top cover 2 so that a light beam is shone onto the jewel A fixed on a jewel mounting piece 9 placed on the transparent plate A graphic material such as a film is provided on the inside surface of the cylindrical body and the light rays reflected or ed from the jewel A are projected on the film 10 as indicated by arrows through a plurality of images for the reflected or refracted light rays through the jewel are formed on the film If the film 10 is thereafter withdrawn and images such as illustrated in 2 are fixed on the film so that the film may be preserved for the subsequent comparison for the identification or discrimination of the In the above although the jewel A has been described as being shone from the crown side it is found rather preferable that the jewel is shone from the culet and such an example is shown in In all of the members such as the cylindrical dark room a transparent plate 4 having a glassy and a light source 5 having a lamp a condenser lens and a small hole 8 are quite similar those indicated in in this example of the device for practicing the method according to the present the jewel A is placed directly on the transparent plate with the crown directed downward contacting with the transparent plate so that the light beam passing through the hole 8 of the light source unit 5 is shone on the culet side of the jewel the photographic materials such as films are attached not only on the inside surface of the cylindrical body 1 but also on the inside surface of the bottom plate When the images fixed on the film 10 in 2 are pared with the images fixed on the films 10 and 10a in it is found that more detailed features characterizing the specific jewel can be seen in the films 10 and 10a in 4 and more specifically in the film As a result of the in all of the hereinafter described examples of the jewel identifying or discriminating vention in more practicable form or the light beam is but not limited shone on the jewel from the culet side of the although in the above described principle or fundamental concept of the present an electromagnetic in the form of visible light has been employed for the simplicity of the another form of electromagnetic radiation such as infrared rays or ultraviolet rays may also be employed for a specific field of so far as the rays may be reflected or refracted by the facets of the Such an application has been found exclusively useful in discrimination or identification of the jewels for a fluorescent or phosphorescent or when a jewel having a spectrographic singularity is discriminated employing an electromagnetic radiation in a specific range of the wave although the fundamental principle or concept of the present invention has been explained with respect to simplified examples of the devices which are employed for practicing the it would be apparent that the invention is not limited to those but it resides in the method of discriminating and identifying materials having optical properties such as jewels comprising the procedures of shining a beam of electromagnetic radiation onto the and recording on a photographic an image of the electromagnetic radiation showing the distribution of the electromagnetic radiation flected or refracted from the material to be and also in the constructions of the devices for practicing the which will be described hereinbelow with reference to 5 through In a device shown in 5 and which constitutes a preferred embodiment of the present there is provided an enclosure or casing generally indicated by a reference numeral On the front panel 11 of the casing a position adjusting knob 13 for the material such as a a voltage adjusting knob 14 for the light a power switch 15 for energizing the lighting an indicating light 16 for the energization of the and a shutter 17 for photographing the image reflected or refracted from the material to be tested are On the rearward portion 12 from the above described front panel 11 of the casing a recessed portion generally indicated by a numeral 18 is A viewer having a hood 20 and a focusing glass 21 as shown in 6 or a pack of photographic films may be inserted in the recessed portion and may be fixed in the position by means of snapping projections the rearward portion 12 of the casing 10 may also be constructed in such a manner that it adapts to receive the viewer having a hood 20 and a focusing glass 21 a package of the Polaroid films which may be fixed in the position by means of a stopper 22 as shown in Inside of the enclosure or casing there is vided a jewel positioning device for positioning arm a head and a shaft The jewel position adjusting knob 13 is attached on one end of the shaft the other end of which is received rotatably in a recessed pad 33 fixed to the bottom plate of the casing The screw threaded on the shaft 32 gages the female screw threaded inside of a hole provided at one end of the jewel position adjusting arm so that when the knob 13 is rotated in either of the the entirety of the jewel positioning device is raised or lowered relative to the focusing glass or the surface of the photographing At the other end of the jewel positioning arm a jewel positioning head 31 is detachably for by means of machine screws The jewel positioning head 31 may take various forms or construction in accordance with the requirements and ornaments bearing the it should be understood that the positioning head 31 shown in 6 is a typical one adapted for mounting a ring 2 embedded by the jewel 1 and having a hole through which a light beam may pass through the ring to the culet side of the jewel A miniature lamp 35 is included inside of the jewel positioning head 31 at a position aligning the central axis of the jewel 1 embedded in the ring In the construction of the jewel positioning head generally indicated by the numeral 31 is indicated in more In this the jewel positioning head 31 beside of the main a ring supporting member 36 having a ring stopper and a machine screw having a knob 37 for adjusting the position of the ring supporting member 36 to suit to the size of the ring 2 bearing the jewel The above mentioned miniature lamp 35 is included inside of a chamber formed at one end of the jewel positioning head main body and is covered by a covering piece 34 having a central hole 34a and detachably mounted on the main body The central hole 34a of the covering piece 34 is so formed that it may be easily abutted in alignment with the aforementioned hole provided through the ring 2 just under the position wherein the jewel 1 is embedded or An electric power system including a voltage ing means is included in the device for lighting the above tioned miniature lamp and energized or deenergized by means of the above described power switch with such a condition being indicated by the indicator light both mounted on the front panel 11 of the casing The voltage adjusting means may be constructed in the form of a transformer T included inside of the casing as shown in and the output voltage of the transformer may be adjusted by the voltage adjusting knob the device may also include a shutter system rendering an adequate period of exposure on the phic material such as a although such shutter system is not indicated in the because it constitutes no part of the present and the operation of the shutter system may be controlled by the shutter button 17 provided on the front panel 11 of the casing Of the shutter system may take a form of an electric timer for supplying a pulse current to the lamp 35 if an adequate consideration is paid as to the tensity of the current and the period for the duration of the In there is indicated a view of a device for discriminating and identifying materials having optical properties such as which constitutes another embodiment of the present Although merely a part of the device required for the explanation of the difference of this embodiment to the above mentioned embodiment is indicated in the it should be noted that other members not indicated in the drawing are all similar to those described in the embodiment of 5 and In this embodiment of the the focusing of the image of the jewel on the focusing glass 21 or the surface of the photographic film is achieved by a focusing lens system including focusing lenses 40 and a lens ing arm 41 which is engaging with the screw threaded shaft 32 controlled by a knob acting at this time as a focusing Because of the provision of a member not shown in the the lateral movement of the focusing arm 41 is and the focusing lenses 40 can be moved only in the upward or downward so that a sharp image of the jewel can be obtained on the focusing plane despite of the jewel 1 supported by a ring 2 is fixedly mounted on a jewel mounting More the jewel mounting unit has a jewel mounting main body 50 the lower end of which is detachably fixed to a mounting socket The upper end of the main body 50 is preferably bent at as indicated in and a lamp accommodating chamber having a cover 53 is provided at an end portion thus bent The cover 53 is tachably mounted over the lamp 35 mounted on a socket provided at the bottom of the and a chamfered or a stepped hole 53a is cut through the cover A rubber ring 54 having a central hole of a substantially equivalent diameter to the rower diameter of the stepped hole 53a is inserted into the larger diameter portion of the stepped hole so that a resilient touch against the inside surface of the ring 2 may be On an intermediate portion of the jewel mounting main body a ring supporting pad 52 is slidably so that the tion of the pad 52 may be adjusted for a desired size of the ring 2 by manipulating a projected end portion 52a of the ring supporting pad In this case the lamp 35 and the hole through the cover 53 and the rubber ring 54 are aligned with a hole through the ring 2 just under the jewel so that a light beam may be projected to the side of the jewel Still another embodiment of the jewel positioning device which is employable in the device for identifying or criminating the jewel is indicated in 9 rather schematically and as a sectional view taken along the axis of the This jewel positioning device is intended for positioning the jewel 1 which is not mounted on a in this the jewel must be clamped firmly and held accurately in its a jewel clamping unit rally designated by a numeral 60 is The jewel clamping unit 60 comprises a required number of claws 61 for holding the jewel a cylindrical member 62 joined to the lower ends of the claws 61 and a mounting screw thread is cut on the lower surface a sleeve 63 slipped over the cylindrical member 62 and having stepped inside holes of larger and a smaller and a coiled spring 64 slipped over the cylindrical member 62 so that the upper end of the coiled spring 64 abuts the stepped annular surface inside of the sleeve The screw threaded portion near the lower end of the cylindrical member 62 is driven into a mating hole provided in a mounting member 65 of the jewel clamping unit which is tachably coupled to a hoisting and descending member The hoisting and descending member 66 may have any tional but preferably and a collar 66a for limiting the upward movement thereof is provided on the surface at an intermediate position along the On one side surface of the member 66 below the collar a rack 66b and a pinion 67 are The hoisting and descending member 66 is passed through a mating opening provided through a fixed member A miniature lamp 35 is accommodated in the rical member 62 and an electrical power system is connected to the lamp As is apparent from the above described the jewel 1 may firstly be inserted between the claws 61 of the jewel clamping unit 60 when the sleeve 63 is pushed down against the resilience of the coiled spring 64 and the claws 61 are separated outwardly by their own By ing the sleeve 63 the jewel 1 is firmly clamped by the claws 61 which are compressed by means of the sleeve 63 pyshed upwards under the resilience of the coiled spring After the jewel 1 is firmly clamped as described the hoisting and descending member 66 is hoisted or descended under the action of the pinion 67 and the rack the pinion 67 being rotated through any of the conventional means from the jewel positioning knob so that a sharp image of the or refracted light spots may be obtained on the focusing plane Although the present invention has been described in connection with preferred embodiments of the it will be apparent to those skilled in the art that various tions and alterations be carried out without departing the rit and scope of the present For the arrangement of the jewel ing or focusing the voltage adjusting or the like provided on the front panel of the device may be utterly changed from those indicated and described in this or even the front panel itself may be and the required trolling knobs or the like may be arranged on a side panel or any other suitable although the jewel positioning unit has been described as merely adjustable of the vertical position of the it may also be modified so that the jewel may be turned around of the axis at a desired In consideration of the above described the true spirit and the scope of the present invention are defined as insufficientOCRQuality

Claims (1)

1. insufficientOCRQuality