Abstract: This invention relates to a new and useful improvement in a wiper blade and blade carrier which is electrically heated for use on the windshields of vehicles, such as automobiles, trucks, trains, boats, airplanes and the like so as to prevent the accumulation of ice, sleet or snow on the wiper blade and wiper blade carrier. More particularly, this invention has references to an improved heating arrangement designed to be used in windshield wiper assemblies with minimum modification or redesign of blade supporting, oscillating means, etc. A heating element of resistance wire is disposed the entire length of the passageway of the wiper blade and beyond into the blade carrier. The heating arrangement is connected to the vehicle battery to heat the heating element allowing the entire outer circumference of the entire wiper blade body and blade carrier to melt frozen precipitation on the wiper and blade carrier.

Abstract: An in-duct cleaning apparatus characterized by comprising a traveling truck, an ejection nozzle body for ejecting compressed air, a cleaning brush body, and a remote-control portion; the ejection nozzle body being attached to the front part of the traveling truck and made to rotate, the cleaning brush body being attached to the circumferential part of the ejection nozzle body, and the remote-control portion being able to control remotely the traveling of the traveling truck and the rotation of the ejection nozzle body.

Abstract: A vacuum cleaner includes a controlling valve in a ventilating path to a runner of an electric generator which rotates respondingly to a suction force, a rotating angle of the controlling valve is varied corresponding to an increase of the suction force so that an increase of the air flow across the runner is suppressed, thus an increase of a voltage generated by the electric generator is suppressed.

Abstract: A rotary friction damper in a device for connecting a door to an adjacent structure such that the door pivots about an axis during opening and closing of the same and including a torsion spring operatively connected to the door and to the structure for movement about the pivot axis to store energy during opening of the door and to release energy to provide closing during closing of the door. The rotary friction damper is operatively associated with the torsion spring and has an axis of rotation disposed substantially parallel to the pivot axis for controlling the door closing speed. The rotary friction damper is adjustable and variable. A mechanism operatively associated with the damper varies the resistance of the damper to movement of the torsion spring to produce a controlled uniform closing speed of the door and for reducing the resistance of the damper to movement of the torsion spring when the door nears the closed position to allow the torsion spring to close the door in an unrestricted manner.

Abstract: An adjustable cable supporting hinge assembly pivotably couples a support member, such as a tray for holding an electronic component, to a support structure, such as a housing or cabinet for an electronic system. The adjustable cable supporting hinge assembly includes a hollow cylindrical hub member which receives the cables coupling the electronic component to the electronic system. The cables are inserted into a cable-receiving region in the hollow cylindrical hub member during assembly and are protected against damage when the pivotable support member is moved. The adjustable wire supporting hinge assembly further includes an adjustable clamp member which rotatably supports and clamps the hollow cylindrical hub member. The adjustable clamp member is adjustable to provide a variable resistance against rotation for the pivotable support member to accommodate electronic components of different sizes and different weights.

Abstract: A self locking cord lock including a cage containing a passage through which a cord or cords can extend, a slide body movable within the cage between a locking position for retaining the cord or cords against movement in a predetermined first direction and a released position permitting such movement, and a spring yieldingly urging the slide body in that direction relative to the cage and toward locking position, with the slide body having a handle portion projecting in the opposite direction beyond the spring and to the exterior of the cage and which is adapted to be pulled by a user to move the slide body in that opposite direction to released position. The spring is preferably molded integrally with the slide body, having a first end attached to the slide body and a second free end bearing yieldingly against a shoulder on the cage. The spring arm may be bowed laterally through an opening in a wall of the cage and then back into the cage and into an opening formed in the slide body.

Abstract: In a buckle, the loose end of a belt is clamped by operation of a pivoted lever that is pressed down onto a base member, a lever belt gripping surface engages one surface of the belt and forces the opposite surface onto a resilient surface in the base member. Flexing of this resilient surface provides a force that secures the belt between the resilient surface and the belt gripping surface. The lever is mounted to the base member by a pair of internal, tapered pins. A pair of flexible mating tapered tabs on the lever mount the lever on the pins. Mating tapers lead or guide the pins to the location of lever holes, thus allowing the lever to be mounted on the base member. In another embodiment, one rigid tab and one flexible tapered tab are located on the lever for mounting the lever on the two pins. This one flexible tab leads or guides a mating pin to a lever hole, thus allowing the lever to be mounted on the base member. Mating snap means are provided to snap latch the lever to the base member.

Abstract: A fastener comprising a male member (A) and a female member (B), wherein a projection (P) including a magnet is disposed on the male member and the female member defines an opening adapted to receive the projection. A slidable engagement member (60), which includes a ferromagnetic portion (61) and a non-magnetic or weakly magnetic portion (62), is disposed within the female member and is slidable relative thereto. The engagement member is positioned such that after the male member is inserted into the female member the attraction between the ferromagnetic portion and the magnet moves the engagement member into a locking relationship with the male member.

Abstract: A magnetic snap lock includes a female member having first and second plates with a magnetic member mounted to one of the plates. The magnetic snap lock further includes a male member which includes third and fourth plates. In one embodiment of the magnetic snap lock, rivets are utilized to hold the plates of the respective male and female members together. At least one of the rivets can include a small hole which serves to modify a resistance to a magnetic circuit created by the magnetic member and thereby increase a magnetic attraction of the magnetic member. The rivets of either of the male and female members can further include a protruding part for helping align the male and female members together when the male and female members are magnetically attracted to each other. In a further embodiment of the present invention, the plates of the respective female and male members are held together by a deformation or brading of the plates together.

Abstract: A shoe fastening attachment device comprising a buckle with a structure for mounting the buckle to a pair of eyelets on a first side flap of a shoe. An elongated flexible strap is provided, with a facility for mounting a first end of the elongated flexible strap to a pair of eyelets on an opposite second side flap of the shoe. Paraphernalia on an upper face of the elongated flexible strap is for releasably securing portions of the upper face together, after a second end of the elongated flexible strap is inserted through the buckle and the elongated flexible strap is looped back upon itself in an overlapping manner.

Abstract: A hanger clip adapted specifically for the dry cleaning industry. The device includes an elongated main body. At each end of the main body are a pair of hanger securing means. The hanger securing means are adapted to clip around the throat portion of a hanger. The hanger clip is inserted into the group of hangers through the open area of the hangers, and is moved upward to the throat of the hanger until the clips are secured on the throats of two terminal hangers in the desired group. The clip also includes a scanner identifiable tag.

Abstract: A snap-action fastener suitable for joining two or more members using automated or manual assembly techniques. The fastener includes a pair of legs spaced apart and having complementary ends, with each of the legs being formed so as to be resilient in bending. Flexibly attached to the complementary ends of the legs are first and second arms, respectively. The arms are attached to the legs so as to form first and second hinges, respectively. The arms can be attached to the complementary ends at a midpoint or an end of each arm. Furthermore, the arms are flexibly attached to each other so as to form a third hinge intermediate the first and second hinges. To generate the desired snap-action, the combined lengths of the arms between the complementary ends of the legs is greater than the distance between the complementary ends, such that the snap-action occurs during operation of the fastener between a release position and a fastening position.

Abstract: A shoelace tightening device which is an elongated, flat rigid plastic body with passages or holes in each end running parallel to the flat plane. The first passage is located near one end. The other passage is more elongated and located near the opposite end. The device is used by loosely threading the shoelaces through the passages, tying the ends of the shoelaces in a secure knot, pulling the shoe lacer up and away from the foot, rotating the top end of the shoe lacer up and over until the shoe lacer has been rotated 180 degrees, and centering the shoe lacer over the remaining laces. This effectively tightens the laces by increasing the distance the lace must travel. This allows a user to secure or release his/her foot from the shoe without tying or untying the lace.

Abstract: A shoelace securing method includes, initially, threading the free end portions of a pair of shoelaces, emanating from a tightly laced region on the shoe, upwardly through a main passageway formed in a securing device by passing the free end portions into an open bottom end and out of an open top end of the passageway of the securing device, next, routing the free end portions of the pair of shoelaces from the open top end of the passageway of the securing device forwardly to and downwardly through an auxiliary passageway formed in a forward edge portion of the securing device, and, finally, tightly wrapping the free end portions of the pair of shoelaces around the shoelaces adjacent to the open bottom end of the main passageway of the securing device between a bottom side of the securing device and the tightly laced region of the shoe.

Abstract: A method of making a plurality of monolithic thick film components having multiple terminals comprising the steps of printing a plurality of components in a wafer form forming a matrix of components, printing holes in the matrix of components where two terminal ends meet thereby separating the terminals on each component, and dipping the terminal ends in a silver based thick film ink.

Abstract: The pin pulling assembly includes an active member which is engageable to a pin, the active member comprising a handle having an increasing radius spiral configuration, the radius increasing from a center pin engaging vertex stud. Further, the assembly includes a plurality of passive stud engaging collars for use with the active member when the pin has a flat head. By rotating the active member, the increasing radius produces a simple extraction of the pin.

Abstract: A flexible belt assembly is prepared by positioning an edge of a belt-shaped substrate in proximity to a metal filled gasket within a groove of a support flange. An electromagnetic force is applied to the gasket to soften the metal to cause conforming of the shape of the gasket to the edge and to the groove. The flexible belt assembly is disassembled by applying a magnetic force to loosen the conforming compression fit.

Abstract: A sucker rod coupling tool and method for either breaking or tightening the threaded joint between a sucker rod and the coupling that joins the sucker rod to the next sucker rod. A base plate has a backup wrench mounted to one end and a friction wrench actuated by a hydraulic piston pivotally affixed to the base plate at the other end. An inversion loop is affixed to the base plate and rotatably suspended below a control platform to accommodate inversion of the base plate along with the backup wrench and the friction wrench. The control platform also supports the control levers and can be raised and lowered to allow the backup wrench to engage the sucker rod.

Abstract: Method for providing a decorative cover by providing a flower pot, positioning a sheet of material about the outer peripheral surface of the flower pot such that the sheet of material extends about a floral grouping so as to form a sleeve around the floral grouping which is selectively detachable from the sheet of material, and positioning a collar about the outer peripheral surface of the flower pot with a portion of the sheet of material being disposed between the collar and the flower pot whereby the collar secures the sheet of material to the flower pot.

Abstract: Apparatus and method for automatically interfitting a part and mount utilize a housing having a chamber and an inwardly tapered alignment surface. A piston reciprocates in the chamber and has a gripper end that moves out of and into the housing, past the alignment surface, when alternating spring and air pressure forces act on the piston. Such movement of the piston accurately positions a gripped part, and the housing then reciprocates so that the alignment surfaces accurately position a mount. The piston then moves the part to an interfit with the mount.

Abstract: A method is disclosed for holding a workpiece having an upper surface, a lower surface and a peripheral edge, in order to facilitate machining or working thereof. According to this method, a bed is provided that is adapted to support the workpiece, said bed having a nonplanar supporting surface so that when the workpiece is supported thereby, a plurality of evacuation spaces are formed between the lower surface of the workpiece and the nonplanar surface of the bed. The bed is also provided with a plurality of vacuum ports that extend therethrough, which ports are in fluid communication with the evacuation spaces so that at least one port communicates with each such space. In the practice of the method a continuous flexible tape is secured to and along the peripheral edge of the workpiece, which tape has a continuous flexible lip portion that curves generally outwardly from the edge of the workpiece.

Abstract: Armatures for dynamo-electric machines are balanced during manufacture by measuring the unbalance of the armature assembly prior to winding the coils on the armature. The numbers of turns of wire in at least some of the coils subsequently wound on the armature are then adjusted so that the unbalance of the resulting coils compensates for the unbalance of the armature prior to coil winding. In addition, masses may be added to the armature to ensure that it is balanced dynamically as well as statically.

Abstract: A method for adjusting inductance of a coil device of a closed structure wherein the coil device outside magnetic substance forming an endless loop, an inside magnetic substance formed inside of the outside magnetic substance and a coil wound on the periphery of the inside magnetic substance. The coil device further includes gaps between both ends of the outside magnetic substance and the inside magnetic substance, and notches or holes in the outside magnetic substance. In adjusting the inductance of the coil device, a jig is inserted through the notches or holes so as to shift the position of the inside magnetic substance with respect to the outside magnetic substance.

Abstract: A process for forming a profiled element from a generally longitudinally extending extruded sheet-form member having a plurality of transversely spaced longitudinally extended ribs upstanding therefrom is provided. The process includes the step of removing longitudinally spaced apart portions from some of said ribs by means of a transversely acting punching means.

Abstract: A method and apparatus for making reusable paint rollers comprised of a core formed from a strip of thermoplastic material. The thermoplastic material is formed into a core by helically winding about a stationary mandril. A layer of adhesive is then applied to the outer surface of the core whereupon a cover is bonded thereto. In a first embodiment the core is formed by winding a plurality of thermoplastic strips about the mandril. In a second embodiment the core is formed by applying liquefied thermoplastic material to a driven belt which transfers the thermoplastic material to the mandril. In yet another embodiment, the paint roller is made by bonding, in a single step, a fabric cover strip to a wound strip wrapped about the mandril.

Abstract: In an electric guitar, the sound produced upon playing on a string thrown, to a predetermined tension, along and over the fingerboard between the bridge and the head is checked by ear to determine phantom semitone frets with the fingerboard extended imaginarily toward and closer to the bridge and the pickup is mounted on the body at one of the phantom semitone frets. The determination of the installation position for the pickup by reference to vibrations of the string on the basis of the above principle of phantom frets not only assures an improved reproducibility of guitar sounds but enables one to obtain nearly infinite and original sounds from the electric guitar.

Abstract: A barbecue utensil set having shanks and handles configured to provide the look and feel of sporting implements such as a golf club, tennis racket, baseball bat and the like. A carryall in the form of a miniature golf bag having an overall size and length for receiving and storing the barbecue utensil set is also provided.

Abstract: A locking knife and sheath combination having a knife of unitary construction. A flexible engagement tab is provided on the handle of the knife for engaging with a tab receiving opening provided in a front portion of the sheath. Upon engagement of the tab with such opening, the knife is securely retained in the sheath. Removal of the knife from the sheath is accomplished by depression of the tab through the tab opening of the sheath. Sheath clamping means are also provided on the opposite side of the sheath and include a clamping arm which pivots with respect to the rearward surface of the sheath through means of rotation of a thumbwheel adjustment member. Rotation of the adjustment member allows for the clamping arm to selectively clamp the sheath to an article. A clamping device is provided for a folding knife having a thumbwheel adjustment member.

Abstract: A knife including a handle, a blade body, a first cutting surface associated with one edge of the blade body adapted for slicing bread and a second cutting surface associated with the other edge of the blade body adapted for scraping and spreading butter or the like.

Abstract: A magnification device lens assembly for sharpening the focus of the field of view of a magnification device to provide greater accuracy includes a base portion having first and second apertured ends; the first end being interconnected with a magnification device lens; and an extension portion extending outwardly from the second end of the base portion; the first end of the extension portion being interconnected with the second end of the base portion and the second end of the extension portion having an aperture with a diameter smaller than the diameter of the base portion and smaller than the magnification device lens for sharpening the focus of the field of view of the magnification device.

Abstract: A laser beam level which comprises a base, a support structure and a laser beam emitting assembly, the emitting assembly including a device for emitting a laser beam in a vertical Z plane and the emitting assembly being mounted in the support structure such that it is pivotable in both the X and Y horizontal planes. The base includes a concave depression having a spherical member mounted therein along with an electrical contact member such that when the base is tilted with respect to a horizontal plane, the spherical member will contact the electrical contact to complete an electric circuit between the base and electrical contact member.

Abstract: An apparatus for performing plumb and level functions includes a base unit that can be leveled in a horizontal plane. A detachable socket with a bearing surface rotates about a complementary bearing mechanism on the base unit about an axis of rotation that is vertical when the base unit is horizontal. The cavity carries a rotatable body that carries a battery-operated laser light-emitting diode for projecting a beam along a projection axis that is a radius from the center of the rotatable body. The rotatable body can move between vertical and horizontal positions to define a vertical extension of the axis of rotation to perform a plumb function or to a horizontal position to move the projected light beam in a horizontal plane.

Abstract: A metrological apparatus has a movable arm 15 which moves up and down between two bearing members 13, both of which define datum positions for the arm 15. The arm 15 has air bearings on the bearing members 13, so that it adopts a position equidistant between the bearing members 13. In this way, the position of the arm 15 contains the average of the errors in the two datum positions defined by the bearing members 13. Where the bearing members 13 have symmetric errors, these will be cancelled. Since the path of maximum straightness of movement of the arm 15 is spaced from the bearing members 13, it is possible to put a workpiece 3 in this path and a turntable 5 for supporting the workpiece 3 is arranged to have its rotational axis in line with the path of maximum straightness.

Abstract: A ventilator/dryer device for drying wet air in a room, the device having a treatment chamber, a rotary drying device and a forced circulation mechanism housed in a case main body provided with an air inlet port and an air outlet port that communicate with the interior of the room. The treatment chamber is divided into a primary side section and a secondary side section with the rotary drying device disposed therebetween. The forced circulation mechanism draws air from the room via the air inlet port to the primary side section of the treatment chamber, passes it through the rotary drying device and sends it back into the room through the secondary side section of the treatment chamber and the air outlet port by means of a single blower. The rotary drying device is adapted to take a drying position, a regenerating position and a heat recovering position sequentially in the sense of its rotation.

Abstract: A fragrance dispenser attachable to the barrel of a hair dryer having a housing which is engageable to the hair dryer barrel. A replaceable fragrance-emitting element is contained within the dispenser. The warmed air flow from the dryer releases the fragrance. Various types of elements in a selection of scents may be provided. The dispenser also allows the user to attach conventional accessories to the outlet of the dispenser attachment. Another embodiment has a regulator for controlling the emission of fragrance into the air flow.

Abstract: A dryer section for a paper machine including dryer groups with single-wire draw, each of which includes drying cylinders, reversing cylinders or rolls arranged in gaps between the drying cylinders, and a drying wire for carrying the web under constant contact with the wire over the drying cylinders and reversing cylinders or rolls so that the web enters into direct contact with the drying cylinders and that the wire enters into direct contact with the reversing cylinders or rolls. In at least one of the groups with single-wire draw in the dryer section, four drying cylinders are placed in pairs side by side and one above the other so that the upper pair of cylinders is placed at a lower level than the other cylinders in the group.

Abstract: A method and apparatus for drying electrophoresis gels. The apparatus includes a base unit and gel drying frame assembly. The base unit serves as a both a support for the frame when placing the gel in the frame and as a receptacle for excess liquid used to prepare the gel for the drying process. The frame is used to securely hold the gel in place while preparing the gel for drying and also during the drying process itself.

Abstract: A drying device for worked metal parts which can prevent the worked metal parts from sticking to each other to efficiently dry the whole of the parts in a short time. The drying device includes a turntable rotatably mounted, a cage detachably mounted on the turntable for containing the worked metal parts, a driving device for rotating the turntable, magnets fixed to the turntable, and an air nozzle device for blowing air toward the cage.

Abstract: A high polymer resin material is configured into a shoe sole component having a plurality of inwardly extending indentations in one or both of the top and bottom members of the component. The indentations extend into the interval between the members and adjacent to the opposite member to provide support members for the sole component. The sole component can be constructed by molding upper and lower sole component halves wherein the molds are configured to provide indentations in the top and bottom members. The upper and lower sole component halves are then joined to complete the sole component.

Abstract: A composite shoe bottom is disclosed comprising a lower layer of firm material and an upper softer layer superposed thereon. Each layer has an upper contoured surface such that the total compressibility of the shoe bottom, as determined by the relative thicknesses of the layers, is predetermined and differs along the surface. The upper layer has an uppermost surface which is shaped to fit against and be complemental to the bottom of the foot of a wearer.

Abstract: A flexible ski boot includes a divided rigid sole and a flexible hard boot body, the sole being divided into a rigid thick toe portion and a rigid thick heel portion. The boot body is composed of a hard toe portion, a soft flexible connecting portion and a hard heel portion which is, respectively, united or joined with the divided rigid sole. The divided rigid sole is connected, respectively, through a hinge between the toe portion and the heel portion so that the rigid ski boot can be bent at the soft elastic portion of the boot body for easier walking. The toe portion of the sole includes inwardly an elastic locking mechanism to lock elastically the hinge between the heel portion and permits the sole to be maintained evenly and to hold a suitable slouch during a descent, when the flexible ski boot is set into a binding, for safe skiing. The rear end of the sole is cut out diagonally as an additional aid for easier walking.

Abstract: A golf shoe stud comprises a molded plastics body enabling the stud to be mounted in the underside of the shoe, a steel stem which extends through the body and forms a frustoconical stump projecting below the body, a thin steel lamina which overlies the underside and edges of the plastics body, and a nose of tungsten carbide which is mounted on the stump. The nose is bonded to the stump by brazing, and an upper end portion of the steel stem is out-turned for securement of the body and the lamina between the out-turned portion and the nose. The stud may be of a replaceable kind in which the plastics body forms a threaded spigot and a sole-engaging flange, or it may be of a permanent kind in which the molded body is arranged to be incorporated in manufacture into a molded shoe sole.

Abstract: An orthopedic shoe insert for correcting the adduction of the large toe is disclosed. The insert comprises generally a foot bed-like rear foot shell whose front edge lies approximately below the ball of the large toe and a corrective lobe molded on the side for supporting and guiding the large toe. The inside surface of the corrective lobe is slightly curved in a concave manner. Stiffening ribs are molded externally into the transition region between the corrective lobe and the rear foot shell. The lower edge of the corrective lobe is curved upwardly in order not to interfere with the rolling motion when walking. Because of the shaping and the use of elastic thermoplastic material, the corrective lobe is swiveled inwardly when walking, thereby actively correcting the malpositioning of the large toe.

Abstract: An apparatus and method for controlling a hydraulically operated construction machine, having a plurality of tandem articulated members which are controlled in a manner that movement of one of the members is controlled in response to movement of another of the members, in order to move the members in a predetermined pattern. The members are controlled in response to the anticipated future movement of the another member. Anticipated future movement of the another member may be determined, for example, as a function of the present position and velocity of the another member and system delay in movement of the another member. Where the another member is controlled manually by an operator control lever coupled with a manual hydraulic control valve, anticipated future movement may be determined by monitoring actuation of the control lever.

Abstract: A steam iron having a thermostat, a steam valve, and a rotatable temperature control. The control has a cam member with an outwardly extending flange having a worm thread section. The cam member operably connects a temperature control knob to the thermostat. A rocker is pivotably connected to the housing of the steam iron and operably connects the cam member to the steam valve.

Abstract: A foldable ironing board including forward and aft support legs which are foldable with respect to an ironing table. A lower rack is mounted to the support legs below the ironing table and includes two rack portions which are each pivotally connected to one of the support legs. The pivotal attachment permits each rack portion to rotate with respect to its attached support leg. The rack portions are telescopically attached to one another so as to permit displacement therebetween when the support legs scissor apart during folding. In the preferred embodiment of the invention, the telescopic interconnection between the rack portions includes three rod members extending from one rack portion which slidably engage with complimentary cylindrical tubes formed on the other rack portion. The present invention also contemplates an upper rack slidably attached to the ironing table near its heel through rails slidably disposed within rail guides located on the bottom of the ironing table.

Abstract: A number plate including luminous characters is usually mounted below head lamps of a vehicle. As essential components, this number plate includes a front plate having a plurality of character portions punched therefrom, a plurality of characters each molded of a transparent or translucent synthetic resin and adhesively fitted into the character portions, a plurality of light emitting diode assemblies arranged on the rear surface side of the front plate at the positions located corresponding to the character portions, a cover secured to the rear surface of the front plate and having the light emitting diode assemblies accommodated therein, and a plurality of base boards having the light emitting diode assemblies arranged at the positions located corresponding to the character portions. In addition, the cover includes a support member for supporting the base boards which are connected to each other in the side-by-side relationship.

Abstract: The invention concerns a tag to be mounted on a fishing rod, which enables a customer at a store to read easily the specifications of the rod printed on the tag without touching the tag by hand and also to confirm simply the handling conditions of the rod without fluttering the tag. The tag is mounted on the fishing rod in such a manner that one side of the tag is secured to one of fishing line guides on the rod, a rod receive surface of the tag is put on the rod, and the other side of the tag is tied to the rod by a connecting wire member. The tag is bent formed from a rectangular paper, resin film or the like into a triangular shape in section and includes the rod receive surface and art least one display surface. The specifications of the fishing rod, pictures and the like are printed or affixed on the display surfaces.

Abstract: A hand-held microfilm reader comprises an elongate body formed by two parts connected together at one end and separated at the other ends to form a slot. A microfilm sheet can be inserted in the slot with a translucent screen being provided to one side of the slot and a magnifying system to the other side of the slot. An electric light bulb is provided behind the translucent screen to illuminate the screen and the sheet and a clamping device is provided for releasably clamping a sheet against the translucent screen when a required portion of the sheet is in the field of view of the magnifying device.A translucent cover may be provided in the part carrying the screen to allow ambient light to the screen to illuminate a microfilm should the electric light system fail.

Abstract: Disclosed is a holder for business cards with a rectangular area having holes at its corners with slits extending outward so that business cards larger than the standard business card may be removably mounted to the card holder.