Abstract: A hinge for spectacles consists of two parts one of which one has a cam surface while the other part comprises a blind cylindrical housing in which are arranged at least one spring and one ball bearing, with the spring pushing the ball bearing against the cam surface. To avoid excessive wear of the cam surface and to facilitate the dismantling of the hinge, the hinge includes an intermediate part located in the housing between the ball bearing and the spring. The intermediate part provides less friction with the ball bearing than the friction between that ball bearing and the cam surface. The housing is provided with devices for retaining its contents which devices reduce the open cross section of the opening of the housing.

Abstract: An arrangement for mixing textile fiber in set quantity ratios, with at least two conveyers and at least two weighing feeders with scale tanks. Each conveyer has one weighing feeder with scale tank for delivering fiber flakes. Each conveyer has one conveyer roller and one breakup roller acting jointly for receiving the fiber flakes, and all conveyer rollers and breakup rollers are connected to a common flake suction device. Two horizontal endless conveyer belts may be used as conveyers. The rotary speed of the conveyers is continuously variable. The upper side of the conveyers runs towards the flake suction device. The conveyer rollers are located near belt rollers on the conveyers. Conveyer rollers and belt rollers have opposite directions of rotation, while breakup rollers and belt rollers rotate in the same direction. Air shield elements and the flake suction device may form an injector nozzle.

Abstract: The disclosure describes a cable clamp which will adapt to and hold firmly cables of various diameters. The clamp includes a "U" shaped body member having a base from which parallel legs project. The outer surface of each of the legs carries a row of teeth. A keeper having a flat plate defining two spaced rectangular openings is placed into engagement with the legs. Relative movement between the plate and the legs is inhibited by the teeth engaging the edges of the openings. Carried on the plate and projecting toward the base of the body member are parallel walls which define angled edges. The edges cam a cable placed between the legs firmly against the base and one leg of the body member.

Abstract: A multi-layer papermarker's fabric is proposed wherein a helical coil is engaged individually with each of the plies of the fabric to define side-by-side loops protruding from the fabric end for interdigitation with corresponding loops at an opposed fabric end to receive a pintle wire, the arrangement being such that, in use, one ply of the fabric protects the helical coil and its connection with another ply of the fabric against wear and damage.

Abstract: The present invention relates to an improved pin device which comprises a pinning means (hereinafter referred to as A means) and a fastening means (hereinafter referred to as B means). The present invention provides a fastener that does not loosen easily and slip off like an ordinary pin and can function both as a pin and a clip.

Abstract: A locking member is secured permanently to one zipper operator as a pull tab and is selectively positionable onto a second pull tab of another zipper operator when the two are located in juxtaposition. A rod-like detent within the locking member is movable under the selective control of a finger actuated member to pass into a loop on the second zipper operator locking the two operators together. A lock is provided actuatable by a key for securing the detent within the loop on the second pull tab and maintaining the zipper closed until affirmatively unlocked and released.

Abstract: A separable slide fastener is disclosed which is provided with a separable end stop assembly comprising a pin member on one stringer and a socket member on the other stringer, both members being releasably interengageable to couple the stringers, and retaining means integral with said pin member retaining the latter in locked relation to said socket member during a starting movement of a slider.

Abstract: A hose clip wherein the housing is made of an originally flat sheet metal blank and has a tubular section for the shank of a rotary screw mating with one end portion of a band whose end portions extend through the tubular section between the thread on the shank and a flat bottom wall of the tubular section. The head of the screw has a tubular portion which surrounds one end portion of the tubular section so as to hold such end portion against radial and/or axial movement relative to the screw whereby the head cannot penetrate into and cannot expand the tubular section while it rotates in a direction to tension the band around the end portion of a hose or an analogous structure. The tubular portion may be integral with the remaining portion of the head, it can be bonded to such remaining portion or it may be rotatably mounted on the shank adjacent to the remaining portion of the head.

Abstract: A mattress box spring and method of assembly comprising a plurality of substantially conical coil springs rigidly fastened at the spring ends of lesser diameter to a support frame such that the spring end coils of greater diameter lie in a substantially common plane, a wire mesh coated with elastomeric material overlying the end coils in the common plane with the spring end coils being unattached or free-floating with respect to the mesh and with respect to each other, and a cloth cover or pad disposed over the mesh and having a periphery attached to the frame to hold the assembly together. Preferably, the diameter of each spring end coil lying in the common plane is greater than the corresponding spring height. The coating on the wire mesh, which preferably is of latex material, provides enhanced frictional contact between the mesh and springs, and also deadens rattling between the opposing spring and mesh surfaces.

Abstract: A device for attaching and removing rubber bearings about pipe stems is disclosed having bearing grasping assemblies pivotly attached at opposite ends of a cross brace plate having an opening through which a rear grip assembly can slide, and having lever arms pivotly attached at their middle section to one end of the bearing grasping assembly and pivotly attached at one of their ends to one end of the rear grip assembly.

Abstract: An apparatus for crimping a fitting onto a hose end is described of the type having radially directed crimping dies and an associated camming surface, and a ram piston for moving the dies relative to the camming surface causing the dies to displace radially inwardly to effect crimping. A depth stop locating subassembly includes an inner platform on which the hose fitting is placed, an axially adjustable outer platform comovable with the inner platform, and a locator mounted adjacent the outer platform establishing a locating position preselected relative to the crimping dies, to ensure proper depth of crimping by aligning the locator with a gauge element disposed on the outer platform.

Abstract: A shock wave transmitted through the fluid to the piston of hydraulic force apparatus provides additive shock force to steady hydraulic force.

Abstract: A tubing slip pulling tool for the removal of tubing slips from a well casing head comprising a substantially disc-like member; a centrally spaced circular opening to receive a tubing therethrough; and a plurality of radial slots circumferentially spaced around the disc-like member, these slots being adapted to receive bolts therethrough for attaching the tool to the tubing slips. In an alternate embodiment of the present invention, the disc-like member is divided into three equal-sized arcuate sections, these sections being provided with hinge means to permit the opening of the tool and tongue and sheath for securing the tool in a coplanar alignment.

Abstract: The instrument for removing exchangeable blades from surgical scalpes consists of two arms /1 and 2/ connected with each other and forming approximately the shape of the letter "U" or "V". The end of the arm /1/ is provided with two protrusions /3 and 4/ and with the catch disposed at a distance therefrom /5/, the end of the arm /2/ being provided with two similar protrusions /6 and 7/. The protrusions /3 and 4, and 6 and 7/ of both arms /1 and 2/ are displaced against each other by such a distance that under the influence of the arms /1 and 2/ by means of the protrusions /3, 4, 6, 7/ onto the blade /11/ mounted on the scalped /10/ it follows a bending of the dull-edged end of the blade /11/ above the upper plane of the lock /9/ of the scalpel /10/, and catching against the catch /5/. The blade /11/ bent in this way acts onto the instrument with a tangential force and gets put out from the lock /9/ of the scalpel /10/.

Abstract: There is disclosed a technique for tightening threaded fasteners in which values of offset torque, initial tension rate relative to angle, final tension rate relative to angle and other joint related factors are empirically determined by instrumenting a plurality of fasteners of the type ultimately to be tightened. In one embodiment, torque and angle are monitored during tightening. Calculations are conducted, while tightening, to determine the tension prevailing in the bolt at a particular angle of advance. By using the calculated tension value and the particular angle of advance, an instantaneous position of threading advance on the tension-angle curve of the fastener is established. From this instantaneous position, it is determined how much greater angle of advance or how much torque is required to tighten the fasteners to a final desired tension value. The same technique may also be used merely to monitor tightening which is terminated by a different tightening strategy.

Abstract: A thermoplastic front frame having many small protrusions on the whole front face and many thorn-like sharp projections on the whole rear face. The frame is strongly forced onto a cloth with the front face of the frame being directed downwardly, so that the front protrusions cut into the cloth so as to temporarily secure the cloth to the frame. Thereafter, the peripheral portion of the cloth extending outside of the frame is folded upwardly and then further folded inwardly and pierced by the rear projections thereby being temporarily secured. Then, a heated iron is forced onto the rear projections to depress the head portions of the rear projections to cause the projection to make the head of each projection larger than the mesh of the cloth whereby the cloth is permanently secured to the frame. Then, the cloth covered frame so formed is integrally attached to the speaker box.

Abstract: The specification describes a Schottky-gate field-effect transistor and related fabrication process wherein thin ion implanted surface stabilization regions are formed between source and gate electrodes and gate and drain electrodes of the device and to a thickness of between 100 and 1,000 angstroms. This is accomplished utilizing the source, gate and drain electrodes as an ion implantation mask against impinging inert ions which render the implanted regions semi-insulating, and this process requires no postimplantation annealing.

Abstract: A cooling shell arrangement is assembled about an outer periphery of a housing of a dynamoelectric machine. The cooling shell arrangement comprises at least two extruded sections of arcuate shaped cooling members having cooling fins and at least two locking members fixedly holding the at least two sections in a predetermined position on the outer peripheral surface of the housing so that elongation of the at least two sections caused by thermal expansion is accommodated by the at least two locking members. Hoop tension is maintained in the at least two sections over a predetermined temperature range. The cooling shell arrangement improves the transfer of heat from the outer peripheral surface of the housing.

Abstract: An electric motor and method of making the motor, in which a unitary one-piece cylindrical housing is molded of nonmagnetic material with an H-shaped axial cross-section to provide cylindrical recesses in opposite ends of the housing. A gear train is inserted in one of these recesses, and a rotor assembly and a centrally orificed stator are inserted in the other recess. The stator is in the form of a sub-assembly having a plurality of annular pole pieces stacked in oppositely disposed relationship with each other. Each of these pole pieces has only a single salient stator pole projecting perpendicularly from adjacent the margin of the stator orifice, and the pole pieces are stacked such that the stator poles project in opposite directions and are arranged in diametrically opposed pairs to form a cylindrical array. Two of the pole pieces are provided with peripheral flanges to form a cylindrical enclosure for the energizing winding of the motor.

Abstract: Apparatus for making a fiber bed element made up of a roving of fibers axially packed in the annulus formed by a pair of concentric screens, wherein structure is provided for holding and rotating the screens in a concentric positioning on the lowermost of a pair of vertically aligned platforms. A roving of staple fibers is fed into the annulus through a tube supported by the upper platform and a packing mechanism mounted on the upper platform packs the roving as it is fed into the annulus. The lower platform is moved downward as the roving is fed into the annulus, in order to maintain a uniform packing force.Downward movement of the lower platform is controlled by a control system which senses packing force and moves the lower platform downward in response to this packing force to maintain a uniform packing density.

Abstract: Apparatus for successively attaching terminals to the stripped ends of electric conductors which are delivered from a wire cutting and insulation stripping apparatus to a conductor supply zone in which the conductors are successively picked up by gripping jaws of finger assemblies carried by a conveyor chain and transported to a terminal attaching zone in which the conductor is axially moved to position a stripped end in a receiving portion of a terminal that has been delivered to an associated terminal attaching device and in which appropriate dies are operative to secure the terminal to the conductor end.

Abstract: Apparatus to cut a carpet into two sections with the edge of each section being beveled. The apparatus employs two rotary cutters mounted at an angle to each other and which are driven at the same speed in the same direction.

Abstract: A mower of the centrifugal cord type is provided with an automatic adjustment of the length of cutting cord, in which the centrifugal force of the rapidly whirling cord end acts on an arm which snubs the cord and prevents further cord from being paid out, until the wearing away of the cord end reduces the force and permits further cord to be paid out by the centrifugal force until the force again reaches the critical value for snubbing the cord.

Abstract: A mill for guiding the cutting of a chain saw includes a mill frame comprising a pair of longitudinally spaced, parallel members joined by a plurality of rod-like runners extending orthogonally therebetween and joined to the lower surfaces thereof. A chain saw bar may be secured subjacent to the mill frame and selectively spaced therefrom by a pair of bolts extending through the chain saw bar to the mill frame, and a plurality of tubular spacer members secured on each bolt between the bar and the mill frame. The runners of the mill frame ride on a plank secured on a log or on a previously cut surface to guide the chain saw in making planar, longitudinal cuts through a log. A slider assembly is also provided, clamped to the longitudinal members of the mill frame, and adapted to secure the chain saw in spaced relation therefrom with the chain saw bar extending downwardly therefrom.

Abstract: A digital scaler for measuring and displaying a distance on a drawing surface comprising a first triangle with a verticle straight edge and a second triangle with a horizontal straight edge slightably engaged with the first triangle along the vertical straight edge. A drive in the form of a drive wheel and pulleys are connected between the first and second triangles and can be activated to displace the second triangle with its horizontal straight edge along the vertical straight edge of the first triangle. A horizontal displacement measuring device is connected to the first triangle and engageable with the drawing surface to measure the linear displacement of the first triangle when it is drawn horizontally across the drawing surface. A vertical displacement measuring device is connected to the drive wheel and measures the displacement of the second triangle along the vertical straight edge of the first triangle when the drive wheel is rotated.

Abstract: A device for describing an ellipse. An enclosed arcuate first slot extends through a cylindrical shell. A path-generating disc fits inside the shell and enables the shell to rotate relatively thereto, and to it is secured a square bottom plate having a plurality of sharp points for centering the device. The disc has a diametrically-extending slot and, perpendicular thereto, a diametrically-extending recess in its upper surface. A cylindrical cam has a path-defining circular projection that rides snugly back and forth in the disc's recess. A cylindrical face of the cam has a radial opening aligned with and leading into another diametrical slot and a tangential opening parallel to that slot. An eccentricity-determining rod fits through the radial opening into the cam's slot, with sliding adjustment; its inner end extends out vertically into the disc's slot, for movement back and forth therealong.

Abstract: An improved indirect reading inside caliper which eliminates the need for a plurality of telescoping inside gauges, the inside caliper comprising an elongated body, a pair of measuring fingers and a bracket slidable on the body, respective manually operated fasteners for the fingers and bracket for holding the same in selected positions on the body, one of the fingers and the bracket fastened together so that they slide in unison on the body, a compression spring in the interior of the body operative upon the bracket so as to yieldably urge it toward one end of the body, a manual adjustment associated with the bracket for imparting incremental movement to the one finger relative to the other finger, whereby a range of inside diameters of apertures having size ratios of the order of 1 to 10 may be precisely measured, the body having an axially extending slot therein extending substantially end to end thereof to maximize the maximum distance of travel between the fingers, the slot being V-shaped, each fastener

Abstract: Improved excitation circuitry for a variable reluctance transducer is disclosed which includes a transformer having a primary winding and a secondary winding. Power circuitry coupled to the primary winding induces an AC excitation signal in the secondary winding which is coupled to the transducer. An error detection circuit compares a reference signal with the excitation signal and feeds back an error signal to the power circuitry to compensate for any differences therebetween. In such manner, a constant excitation signal is maintained for the transducer.

Abstract: Apparatus for aligning a printed circuit board (PCB) relative to a datum line defined between two pins fixed to a supporting member. One pin is cylindrically shaped and the other is shaped in the form of a frustum of a cone. Two aligning holes are provided on the PCB spaced apart by a distance slightly different from the spacing between the pins so that with one hole over the cylindrical pin, the edge of the other hole rests on the sloped side of the other pin. As the PCB is pressed against the supporting member between the two pins by securing means, the PCB is sprung, and the stored force of the sprung PCB presses the edges of the PCB holes against the pins for precise alignment relative to the datum line between the two pins.

Abstract: A workpiece end locator which provides a linear analog voltage indicative of the workpiece location relative to a reference plane. The output of the end locator can be utilized for positioning the workpiece at a desired location or for providing position information to the machine control system which will automatically compensate for the workpiece position. The disclosed end locator utilizes a rotatable shaft having a probe arm extending from one end thereof. A probe tip on the probe arm contacts the workpiece whose position is being detected. A rotary transducer is connected to the other end of the rotatable shaft for providing a linear analog signal representative of the angular shaft position. A pair of stops are provided between which the rotatable shaft can rotate. A pair of air actuators are provided, one of which biases the rotatable shaft toward one stop and the other biases the rotatable shaft toward the other stop.

Abstract: An easily attachable shaft aligning device comprised with a gauge supporting post that will support dial indicators that make contact with the second shaft to be aligned. This indicator holder has a metal base which houses two levers with hooks on their outer ends that receive any selected link of a chain that encircles the shaft to be aligned by screwing the dial indicator support post into the metal base against an inner part of the levers lifting the outer hooked ends of the lever and thereby tightening the chain to said shaft.

Abstract: An apparatus to aid in the aligning of motor vehicle wheels comprising a bar to engage a tire of the wheel, and two plate members attached to the bar to support the bar on a ground surface upon which the tire is resting and to maintain the bar parallel to the surface.

Abstract: A measuring apparatus for incrementally measuring the wheel inclination angles of vehicle wheels with the arrangement employing data emitters for converting the inclination angles into pulses proportional to such distances or angles. Each of the data emitters includes a movable scanning pin operatively connected with a photo-electric system cooperating with light rasters to generate pulses indicative of the measured angle of inclination. The generated pulses are fed to a pulse store device and/or an indicator device to provide an automatic visual indication of the camber, toe-in, caster and lock angle of the vehicle wheels.

Abstract: A target sight for handguns includes a rear notched rib sight and a stepped front ramp sight together on a platform. The ramp includes a series of steps extending from the front of the sight platform rearwardly to adjacent the rear sight. The platform is mounted on a base member which is secured to the gun. The mounting of the platform on the base includes a pivotable mounting so that the platform may be adjusted vertically and laterally relatively to the base and the gun.

Abstract: A sighting mechanism for a bow comprises a one-piece wire sight guide slideably mounted for transverse movement in a mounting block that is adapted to be attached to a bow. The sight guide includes a central section that runs parallel to the plane of the bow, and a series of annular grooves are formed along the central section. A plurality of flat, plastic discs are slideably mounted on the central section, with the openings in the discs being slightly smaller than the diameter of the central section such that the discs can be clipped securely into any selected groove along the central section. The central section serves as a vertical reference line and the discs serve as horizontal reference lines for sighting purposes. A number of different discs are employed for the different horizontal reference lines necessary for targets at different distances.

Abstract: The invention relates to devices for measuring the azimuth and the slope of drilling line. These devices comprise, in a container 1, a gyroscope 5 having two principal axes of sensitivity X--X and Y--Y and an accelerometer 12 having two principal axes of sensitivity parallel to those of the gyroscope 5; this gyroscope 5 is connected to a circuit to determine the component of the Earth's rotation vector along the axis of the drilling line.

Abstract: An inclination gauge that includes a bar placeable against a surface to be gauged to determine the degree to which the surface is inclined with respect to the horizontal or vertical. Mounted on the bar is a gravity-sensing potentiometer coupled to a balancing circuit to produce an analog output voltage which has a null value when the bar is placed against a perfectly horizontal or vertical surface and which has a magnitude and polarity or phase that depends on the extent and direction of the deviation from the norm when the surface being gauged is inclined. The analog voltage is converted into a corresponding digital value that is applied to a digital display.

Abstract: The alignment device is utilized for guiding a hand manipulated power tool on the surface of a planar workpiece and includes an elongate guide member having a guide surface for guiding the shoe of the power tool and an elongate gauge member having an alignment edge adapted to be aligned on and with a desired line of cut on the surface of a workpiece. The elongate gauge member is releasably fixed to the guide member. The guide surface is parallel spaced to the alignment edge a predetermined distance equal to the distance from the shoe of the power tool to the path of travel of the cutting member of the power tool. The device also includes clamps for holding the alignment device to the workpiece and mating coupling members at each end of the device so that two or more devices can be coupled together to provide a composite longer alignment device.

Abstract: A light weight portable straight-edge which incorporates a complete 180.degree. protractor with a vise for individual position stability. The vise is essentially a common heavy gauge spring establishing a pivot that induces a constant pressure at the extremity of the opposing clamp and straight edge that together have a holding tolerance for materials of 1/4" to approximately 21/4".

Abstract: An acceleration cueing simulation device is disclosed for applying sustai, as well as dynamic, acceleration forces to a trainee pilot as he operates an aircraft simulator. The acceleration cueing device comprises a pair of Helmholtz coils for generating a uniform magnetic field; an aircraft control device for generating a control data signal which is responsive to simulated flight maneuvers performed by the trainee pilot; and a computer system for producing a plurality of digital logic signals which are in response to the control data signal. The plurality of digital logic signals, when converted to analog signals, will energize a plurality of coils which are embedded in a suit and a helmet worn by the trainee pilot. When the trainee pilot is within the magnetic field generated by the Helmholtz coils, the coils embedded within the suit and the helmet provide a plurality of simulated acceleration forces which are exerted upon the trainee pilot.

Abstract: A waterproof hip length boot and method of manufacture wherein the fabric lined upper leg portion is attached as a sheet around its lower edge to the upper edge of the lower boot portion by an adhesive such as urethane or another synthetic polymeric material having similar properties that provides circumferential and longitudinal bonded seams and also coats the fabric opposite the wearer's knee for internal abrasion protection.

Abstract: An arrangement for modifying a plow blade power unit of the type positioned between the mounting frame on the front of a vehicle and a plow blade lift arm, to a unit for creating pressurized fluid from a remote location. Modification enables a basically similar power unit to be utilized in both remote and direct operational environments with only minor substitution of interchangable parts. A piston-cylinder unit which enables direct lifting of a plow blade is replaced by a modified, but similar, cylindrical element for use in indirect lifting of a plow blade by fluid under pressure.

Abstract: An improved guidance device for use with an earthworking machine, more especially a drain tile laying machine, comprising a earthworking element mounted about a pivot connection. This guidance device comprises a signal emitter and two signal receivers mounted on the earthworking element of the machine. The two signal receivers are mounted on the element in a longitudinal spaced apart relation, so as to distinguish between a depth change or an attitude change in the element. The guidance device also comprises operating means including an electronic control circuit and an hydraulic operating circuit for adjusting the attitude or depth of the element depending on the indication given by the signal receivers.

Abstract: In a steam iron an improvement is provided comprising a separate molded plastic baffle that is inserted from the bottom of the tank into the riser portion, the baffle having a transverse vertical wall extending completely across the tank. To the vertical wall, an integral horizontal wall is cantilevered on one side to provide a stop by abutting the underside of the tank top when inserted from the bottom. A pair of vertical channels is offset from the vertical wall on the other side thereof and the channels extend into the riser portion being spaced to provide an opening for handle-mounted components including the dump rod, the channels being designed to direct water into the tank. A slanted and offset aperture in the vertical wall for guiding ribs around it, the aperture providing a supported guide for the low end of the rod.

Abstract: Gummed labels having outlines corresponding to top and bottom views of integrated circuit packages include numbered lead locations as seen from both the top and bottom of a particular integrated circuit package. A simplified schematic diagram located on the portion of a label corresponding to the integrated circuit package body indicates connection of an integrated circuit to the respective leads. Part numbers and brief descriptions of commercial integrated circuits are printed on the labels. A plurality of unused labels are removably attached to a backing sheet, and are peeled off and placed on a working sheet to enable an engineer or technician to easily make diagrams or printed circuit board layouts without having to refer to a manufacturer's catalog.

Abstract: This invention is a combination of known elements for a new use. This is an adaptation of the old shadow light principle coupled with time to cause three different light apertures to be aligned in a lighted window effect, thereby indicating a previously programmed marking to remind the owner of hourly, daily or weekly radio, television programs, appointments or meetings.

Abstract: Apparatus for the display of pictures. Both front and back sides of pictures are displayed. The apparatus includes a picture frame having a hook and a loop extending in opposite directions from a ring in which the picture is mounted and retained by tabs. The ring, hook, and loop are substantially in the same plane. A chain of identical frames can be made by connecting the hook of each frame in the loop of the preceding frame. The hook and loop of each frame are substantially at right angles to each other so each frame in the chain is substantially at right angles to each adjoining frame. The fronts of each frame form a spiral and face in a direction different from the direction faced by fronts of adjoining frames.

Abstract: In a picture display formed of paperboard, a front perimeter frame includes an opening to accommodate a framed picture for viewing, the frame incorporates an integral strap across each of the opening corners, side and end walls foldably connect with the outer perimeter of the front frame, and flanges connecting with the walls fold around the back side of the frame to form a back perimeter frame thereof, and secure the displayed picture in place. Spacer elements foldably connecting with the inner edges of the front perimeter frame opening fold interiorly of the display for centrally positioning the held picture for convenient viewing.

Abstract: A card rack has dividers that extend from the front wall to the back wall at a acute angle. Each divider has a plurality of holes, and corresponding holes in all of the dividers are aligned to provide a plurality of elongated passages. A rod extends through one of the passages to determine the depth into the compartments between the dividers to which cards can be inserted. By withdrawing the rod from one passage and reinserting it into another passage, the depth of the compartment can be adjusted. This depth adjustment is provided in a card rack that is also adjustable in width.

Abstract: A display device includes a hollow base having a slot in its top wall and a bottle simulating transparent shell has its rear opening covered by a plurality of superimposed transparent sheets having relatively vertically staggered, translucent faced dimples formed in their rear faces, their lower border interfaces opaque with these lower borders engaging the slot and the remaining borders opaque. A longitudinally slotted hollow cylinder is motor rotated in the base and a lamp is located in the cylinder so that the bottom edges of the sheets are cyclically successively illuminated whereby the light dispersing dimples provide the illusion of rising bubbles in the bottle.