Abstract: A dental handpiece comprises a holding sleeve, a head sleeve connected to the holding sleeve for mounting a dental instrument, a connecting zone providing an interconnection between the holding sleeve and the head sleeve, a two-part drive shaft housed within the handpiece, a first part of the shaft being arranged within the holding sleeve and a second part of the shaft being arranged within the head sleeve, and a ball-type planetary transmission housed within the connecting zone and providing a drive connection between the first and second parts of the shaft. The handpiece may be a straight handpiece or the head sleeve may be inclined to the holding sleeve to provide an angled handpiece.

Abstract: A dental articulator having upper and lower mounting plates for supporting upper and lower models of teeth, the upper mounting plate being supported in fixed relation to a base-plate and frame, and the lower mounting plate being movable in a substantially horizontal plane about a centric position with respect to the upper mounting plate, to simulate corresponding movements of a patient's lower jaw. A pair of lower articulating elements attached to the lower mounting plate are held magnetically in engagement with a pair of upper articulating elements on the frame, the upper and lower articulating elements being patterned after the fossae and condyles, respectively, of a human mandibular joint, and being adjustable in lateral spacing and angular orientation to closely simulate the movements of a particular patient's jaws.

Abstract: A set of guides are provided for setting up upper and lower artificial teeth on models. Each guide is a strip of flexible, non-elastic material. A center line is formed on each guide with a millimeter scale extending laterally therefrom on each side. The range or average width of the first anterior tooth is marked on each side of the center line, the range of the widths of the three anterior teeth on each side is marked on the guide, and the range of the widths of the four posterior teeth on each side is marked on the guide. An additional thickness is preferably formed at the top center of each strip, the additional thickness having two integral lobes intersecting at a downward facing angle at the center line to rest on the phrenum of a model. Generally longitudinal height lines parallel to each other are inscribed along the upper edge of each strip, and each guide strip has means provided to have it circle a model.

Abstract: A drafting board includes a pair of laterally spaced base members which are pivotable upon supporting elements. The base members carry a drawing surface which is thus also pivotable. A straight-edge assembly having at least one ruling edge is carried by the drawing surface and is movable therealong between front and rear edges of the drawing surface. The straight-edge assembly has a bracket assembly at each lateral end thereof surmounting the side edges of the drawing surface, and the ruling edge of the assembly extends between the brackets and is pivotably secured to the brackets. The straight-edge assembly is laterally extensible and is movable along the drawing surface in a manner such that one end thereof is movable independently of the other so as to permit angular positioning of the ruling edge relative to the front edge of the drawing surface.

Abstract: Link mechanism of a mechanical transducer, especially of a toothed amplifying gauge, consisting of an input member performing a rectilinear motion and contacting in a point with one arm of a double-arm lever, the other arm of which remains in point contact with an output lever, characterized in a preferred example in that the mechanism is equipped with a non-linearity compensator of the transmission in the form of an intermediate member, preferably a shaft rigidly mounted on the rotating arm and arranged between a working surface of the double-arm lever and the working surface of the output lever. The arm of the compensator preferably has an arcuate opening through which the axle of the output lever passes, the latter having an arcuate opening through which the axle of the compensator passes. The latter is preferably positioned parallel and in the same plane as the axes of rotation of the double-armed lever and the output lever.

Abstract: A bore hole probe instrument having a point source of light, passing through a flexible tubular portion. The point of light, which originates at one end of the flexible tubular portion, is established for example by means of fibre optics, a laser or the like. At the other end of the flexible tubular portion there is located an automatic camera having an image screen, on which the point of light is received. As the flexible tubular portion bends, to follow the path of the bore hole, the light spot will be deflected on the image screen. The camera will photograph the position of the light spot on the image screen thereby providing an indication of the deviation of the bore hole.

Abstract: A frame for a facial identification system of the type wherein changeable facial feature components are assembled to create a representaton of a face includes a base member with an elevated ledge along one side thereof. A transparent cover plate overlies a portion of the base member, and snap hinges extend between the ledge and the cover plate. Vertical and horizontal indicia on exposed portions of the base member provide coordinates for specification of location of facial features.

Abstract: A kit for use by a coach or coaches on a regulation football playing field during formation and play analysis and for teaching players formations and plays has a plurality of elements forming sets symbolizing an offensive unit, a defensive unit, and route patterns. The elements are placeable directly on a regulation playing field to assist in setting up offensive and defensive formations and sets.

Abstract: A portable device for demonstrating information including a receptacle with bottom and side walls. A lid is pivotably mounted on a side wall of the receptacle and a support element is mounted on the opposite edge of the lid. Leaf elements such as felt boards and peg boards are pivotably disposed at the intersection of the lid and support element.

Abstract: A podiatric device is provided comprising a sandal having a resilient insole moulded to the contour of the plantar surface of the foot, moderately raised under the metatarsal arch of the foot having a plurality of uniformly distributed rigid studs extending upwardly from said insole. The studs extend a moderate distance from the insole's surface and have rounded heads. The studs are set in alternating staggered columns. The sandal aids in relieving fatigue, massaging the feet, and in improving the kidney function.

Abstract: A time saving automatic hydraulic control for that sequence in operations in which a grab excursioning out of sight of the operator, is sequentially lowered open to engage work material, closed to pick up a load, and then hoisted with its load and emptied. A hydraulic-electrical control is activated to stop the lowering of the grab within an adjustable timed period after initial work engagement to provide desirable penetration of the work material by the grab followed by a minimal time for grab closing to accomplish an adjustable constancy of loads as well as positive sequential control for the lowering and hoisting modes.

Abstract: A corner tooth assembly which is removably secured to the corner of an implement for engaging the earth in a longitudinally oriented forward direction, and which includes a laterally extending bottom plate, a side plate integrally secured to the bottom plate, and an elongated forwardly extending earth penetrating structure integrally secured to the bottom and side plates for overlappingly engaging the implement protectingly exteriorly of the corner thereof.

Abstract: This grab bucket comprises a pair of shells or scoops pivoted to the lower portion of a frame structure and operatively connected to a vertical hydraulic cylinder and piston actuator of which the piston rod is held against translation in relation to the frame structure, the upper end of the cylinder of said actuator carrying the pivot pins of links connected to the pair of shells or scoops. The frame structure comprises on the one hand an upper member rigid with the piston rod of said hydraulic actuator and on the other hand a frame structure body detachable from the upper member. The shells themselves are detachable from the base of the hydraulic cylinder to permit the operation of the grab bucket not only as a digging bucket but also as a rehandling bucket after disassembling the frame structure body and connecting the links to the upper member.

Abstract: An opaque face plate has arrays of openings which are arranged to depict numerals when light is transmitted through predetermined openings. A plurality of back plates are slideably mounted behind the face plate, each back plate having an array of light passages, some of which are elongated slots, and said light passages being arranged to coact with face plate openings to form numerals. Some of the face plate openings are arranged in upright line formation, and the slots are inclined at a relatively small acute angle with respect to said upright lines. Each back plate is slideable in a direction defined by the direction of the inclined slots, and is moved back and forth in intermittent steps along its path of movement to cause the numerals to change in accordance with the time of day.

Abstract: A holder for photographs and the like is provided that includes a housing or box, a plurality of slidably mounted trays, and a plurality of swingably mounted article holders are pivotally connected to each tray whereby articles such as photographs can be conveniently supported in each of the article holders.

Abstract: A knotted fishing net wherein the knot is formed of a warp and a weft, said warp being wound at least one more time about the weft than in the prior art double knot; and the feed portion of the warp alternately passes over and below the return portion thereof at adjacent intersections except for the outermost intersection of both feed and return portions of the warp on the outlet side of a knot on which the return portion of the warp is drawn outward.

Abstract: A fish lure having a hollow body portion formed of complimentary shells pivotally secured together at one end is provided with a fish attracting scent material carried within the lure body. Openings in the lure body are provided at each end to permit water to enter and leave the lure cavity as the lure is pulled through the water, thereby dispersing the scent. A latch cooperating with a hook securing means permits easy access to the lure cavity while holding the shells together while fishing.

Abstract: An attractor element embodying a first and a second pliable leg connected at their forward ends to each other and to a fishing lure. The first leg extends outwardly and rearwardly from its forward end and then inwardly and terminates in a free end rearwardly of its forward end. The second leg extends outwardly and rearwardly from its forward end and away from the first leg and then inwardly around the free end of the first leg with the second leg being longer than the first leg and terminating in a free end rearwardly of the first leg.

Abstract: A fishing device for locating the depth of a body of water and for adjusting a hook on a fishing line to be set at any desired height relative to the bed of the body of water. The device comprises a float containing a tubular assembly. The assembly contains two frictional means: one permits the line to move only towards the bed of the body of water and the second restricts movement of the line in both directions. A disengagement means, when actuated, permits free movement of the line in both directions.

Abstract: A bait dispenser for use by fishermen which includes a container for carrying live bait to be dispensed and a cooperating dispenser tube having a slot cut in the end thereof to form a pair of jaws with levers attached which levers facilitate a widening of the slot when depressed. The bait dispenser also includes a spring-loaded plunger on the dispenser tube which communicates with the interior of the tube to block the passage of live bait through the tube.

Abstract: There is provided an animal trap comprising a spiral spring which has a fixed inner end portion and a movable outer end portion and which is extendible to a stressed condition wherein the movable outer end portion of the spring is in engagement with support faces presented by the outer ends of two pivotally interconnected levers, these support faces being vertically above pivotal connections between the outer ends of the levers and links which are pivotally connected to a frame of the trap.

Abstract: An amusement device of pictorial display including a base member with markings thereon depicting an object and with the markings being located in rows for identifying locations of elongated blocks which are standable on end along the rows. The blocks can be tipped in the direction of their rows and thereby sequentially knock each other over and form rows of blocks laying on each other to thereby present a three-dimensional display of the object depicted on the base member.

Abstract: A toy comprising, in combination, a flying object, connected through a cable, to a device handle for rotating said object; the handle incorporates an automatic cable unwinding and rewinding device actuated by centrifugal forces.

Abstract: A flying toy has a body, an inflatable balloon connected to a downwardly facing nozzle, and a recess accommodating a parachute. Upon inflation, the escape of air from the balloon causes the toy to rise, and as the balloon reaches the end of its deflation, its reduction in size uncovers the recess to allow deployment of the parachute to enable the toy to float back to earth.

Abstract: A baton twirling doll having a torso, arms, legs, and a head which are all connected so as to simulate the human body can be connected to a support structure used to provide power to move one or more parts of the body with respect to other parts of the body. The support structure used includes a wheeled platform and a support member extending from the platform to the torso of the doll. A mechanical drive is connected to the wheels of the platform so as to be operated when the platform is rolled along a surface. This drive is connected with a motion transmitting structure within the torso of the doll for moving at least one part of the doll relative to the remainder of the doll. Preferably the doll is constructed so that a hand on one of the arms of the doll is rotated as the arm holding this hand is rotated and so that the legs of the doll are moved to simulate normal leg movement as the wheeled platform is moved along a surface.

Abstract: Undesirable vegetation or weeds are destroyed by electrical current conducted therethrough by prolonged contact with electrodes. Internal plant tissues of the vegetation are exposed for electrode contact by removal of electrically resistant external layer portions through abrasion of the plant stems or stalks along a path of movement of the apparatus to reduce the electrical energy requirements for plant destroying purposes.

Abstract: A vegetation suppressing, ground covering agronomic mulch sheet adapted for the prevention and/or control of undesirable plant growth is disclosed. The sheet is comprised of a web having a maximum light transmittance of about 60% and a minimum air permeability of about 200 1/m.sup.2 s at a pressure differential of 10 mm water.

Abstract: A greenhouse is disclosed in which tubular curved members formed of standard unit lengths are used to form arched rafters while the same tubular members in uncurved form are used to form purlins. The tubular members are connected by suitable clamps to form a structural support for the roof of the greenhouse. A side leveling plate is provided on either side of the greenhouse to which the ends of the rafters are attached. The side leveling plate serves to anchor the rafters in the ground and also serves as a stapling surface for the covers placed over the roof of the structural support of the greenhouse. An environmental control system is provided in which the temperature, humidity and other environmental factors are controlled so as to provide enhanced growing climate for the tomato plants grown therein. Additionally, novel systems for correcting overwatering of the troughs as well as monitoring the water levels therein are provided.

Abstract: The invention is a dual purpose container and lid for foods, cosmetics, medicines, nursery products and the like which is convertible to a flower pot. The container body and lid incorporate structural features which facilitate removal of the primary product from the container and utilization of the container for potting, the lid of said container being removable for use as a base for said container.

Abstract: In a barrier for bicycles of selected lengths there is provided a U-shaped obstructing unit and means at the open side of such unit preventing in cooperation with the unit the passage of bicycles of a predetermined length.

Abstract: A panel for securing in a conventional sliding door opening to cooperate with the sliding doors therein has a swinging door flap at the bottom of a panel defined by vertical stiles which may be trimmed to suit varying door frame heights. The stiles bear fixed projections to fit horizontal apertures at the door stile and sliding projections to fit apertures in sill and top rail of the frame. The panel has an adjustable rail which overlaps the weather pane of the panel at top or bottom of the pane. The access door flaps swings from an intermediate rail which may be a part of a panel or a part of a sub-assembly mountable in any opening. The flap has imbedded magnets to arrest it closed and thin wiper edges to seal against weather, and is self-hinging in the intermediate rail.

Abstract: This invention relates to an improved hinge for gates, and more particularly, to hinges for chain link fence gates characterized in one embodiment in that they provide automatic gate closing, despite uneven terrain. Further, in a second embodiment, the improved hinge system provides gate openings up to 180.degree.. The expanded mode of operation is effected by offsetting the lower or both hinge pivot points respectively from the center line of the fence. The offset, provided by an improved hinge design including an angular extension of the gate hinge member, is effected while maintaining the coincidence of the center lines of the gate and fence.

Abstract: A keeper element is shown for insertion in a sill extrusion in which the lower rail of a sash is movable. The keeper is a channel-like element with the terminal edge of one wall having interruptions for mating and interlocking with portions of the sill, such as spaced tabs adapted to extend into weep holes in the sill, or notches adapted to fit around internal sill projections. The keeper also has an upper surface confronting the lower rail in which a number of spaced openings are provided. A latch element is vertically slidable on a stile of the sash, and is adapted to be lowered so it extends into one of the openings in the keeper. In this manner, the sash is releasably locked in any of a plurality of positions, with security maintained because the keeper is locked against movement relative to the sill.

Abstract: A blast cleaning machine for blast cleaning parts comprising a main frame, a housing supported on the main frame, and a barrel assembly rotatably supported in the housing for oscillatory movements therein between loading, blasting and discharge positions. The barrel assembly has an annular side wall provided with relatively inclined sections that cooperate with relatively inclined surface sections at the bottom of the barrel to provide for a continuous tumbling and flowing of parts in the barrel across a stream of shot projected into the open end of the barrel by a conventional impeller assembly. This action of the parts assures a full cleaning of all of the parts in the barrel in a relatively short time.

Abstract: A pneumatic structure, suitable for use as a roof, employs a series of upper and lower cables connected via vertical diaphragms and disposed within an inflated envelope such that a load imposed on the upper surface of the inflated envelope will be transferred to the lower cables via the diaphragms and then taken up by the lower cables. To carry this out, there is a common connection between the diaphragm, its upper cable and the upper surface of the membrane and a similar connection with the lower cable, the diaphragm and the membrane.A pneumatic compression ring is also disclosed for use with the pneumatic roof structure or for use in supporting an alternative roof structure, or a segment thereof may be used as a pneumatic arch.

Abstract: A lighting system is provided having a unique main runner structural configuration that enhances the adaptability of the system to a number of uses, including one-way, corridor and grid ceiling patterns. The main runner has an inverted U-shape design in cross section, the legs of the U-shape defining an open mouth channel. The legs also have a lip associated with them. The lower leg and lip portions or formation of the inverted shape hides the division line between various color combinations used in conjunction with the main runner from observers of the ceiling system, and also creates a recess for holding and supporting a number of accessories associated with the ceiling system. The lip of the main runner provides support for any associated ceiling panels. One embodiment of a lighting fixture compatible with the lighting system disclosed hereinafter has offset end pieces which permit continuous linear luminaire pattern installation.

Abstract: A sound insulating panel having improved sound absorption properties. Known sound insulating panels are of sandwich-type construction, requiring several manufacturing steps which are both time-consuming and expensive. Additionally, partitions can be formed from panels according to the present invention which require neither special skills nor additional tools when erecting or dismantling the partitions. According to the present invention, there is provided an improved sound insulating panel having a pair of opposed major surfaces extending between a pair of opposite vertical edges. One of a pair of complementary tapes are mounted on at least one of the vertical edges of the panel. The tape is adapted to releasably engage a second complementary tape located on a second structure, such that the two tapes form a sound absorbing connection between the panel and second structure.

Abstract: A method and apparatus for reducing lateral force variations and overturning moment variations in pneumatic tires by detecting the magnitude, direction and location of such variations and alternatingly grinding off opposite portions of the two shoulders of the tire tread. A tire is mounted on a test rim, inflated to operating pressure, and rotated under a normal service load against a loading drum. Force variations in the lateral and radial directions are detected and measured by load cells operatively associated with the drum axle and located at opposite ends of the axle. The sum of the lateral force variation forces or the difference of the radial force variation forces measured by the load cells provides a voltage level signal representative of the direction, magnitude and location of the lateral force variation and the overturning moment variation. The phase angle of this signal is ascertained to determine the location on the tire of these variations.

Abstract: A high load extendible structure including an elongated thin pre-stressed element which has a cross section whose interior portion is curved to form substantially one-half of the perimeter of a circle and whose two exterior portions are each curved in an opposite direction to each form substantially one-quarter of a circle of the same radius as the central portion when the pre-stressed element is unrestrained from a flattened condition. The element is capable of being rolled flat upon a roller and yet can be extended to support or push various loads and plastic beads are located along the edges of the pre-stressed element to provide protection from these sharp edges. An equation is presented for determining the required thickness of the element once the radii associated with the element and the radius of the roller and other parameters for a given application have been determined.

Abstract: A swimming pool having sidewalls constructed from a series of prefabricated modular panels connected at the ends to enclose the interior of the pool. The panels are preferably formed of foamed synthetic resinous composition and of a limited number of configurations or modules which are interchangeably adapted for use in forming pools having a plurality of shapes, e.g. a straight panel, a concave curved panel and a convex curved panel. Each panel is adapted to mate and lock with the adjoining panel, and with an upper and with flanges and rib arrangements which are functional as well as serve to strengthen the panel. In a specific embodiment, a tongue is formed on the flange on one side and a mating groove on the flange on the other side of each panel for instant connecting and interlocking of adjacent panels when they are assembled in forming the pool wall. A sealing strip may be placed within the groove and abuts on the tongue of the adjoining panel thereby precluding leakage between the panels.

Abstract: The frame structure comprises a pair of spaced apart vertical steel columns with a generally horizontally extending steel beam interposed between but spaced slightly from the columns by spacers carried by the columns. The columns and beam each has a generally H-shape cross-section. Moment inducing wedges are interposed in the spaces between the end faces of the beam and the columns. A plurality of fastening elements are provided at each end of the beam for initially rotating the beam on the spacers and for thereafter fixedly securing the beam to the columns, with the wedges when the fastening means are stressed inducing an upward camber into the beam prior to the application of the dead load. With such a construction the inclined face on each of the wedges is at an acute angle with respect to the vertical. By varying the acute angle or the angle in inclination of the inclined face on the wedge, variable end moments can be induced into the beam.

Abstract: Improvements in area space divider assemblies and components therefore. One component is the bridge means used in connecting two or more wall panels together to provide the divider assembly. The bridge means have projecting longitudinal edges equal in number to the number of panels to be joined together. Receiving means are provided at each end of each projecting edge. The receiving means extend longitudinally inwardly of the bridge means from each end and receive vertically extending connecting means on the panels. The bridge means can comprise a single bridge member for joining two, three or four wall panels together; or a bridge assembly consisting of two, three or four bridge members, joined by links, for connecting two, three or four panels. The invention also relates to novel wall panels and space divider assemblies.

Abstract: A method of polishing material for lapidary and like purposes, the material and abrasive being tumbled in a vibrated container which alternately compacts the material against a wall of the container and then separates it in order to reduce the time required for polishing. Apparatus for carrying out the method vibrates the container of the material and abrasive so that a portion of its orbit is about a theoretical center which is above and to one side of the center of gravity of its mass.

Abstract: Wood veneer wall covering made up of various lengths of veneer strips disposed end-to-end in parallel, diagonal rows over a wall surface.

Abstract: A roof structure is fabricated by supporting a lattice of support straps through openings in the purlins, supporting one or more reels of insulation material on adjacent pairs of purlins with the width of the material spanning the space between the purlins, moving the reels along the lengths of the purlins and paying out the insulation material from the reels down into the spaces between the purlins and onto the lattice of support straps to substantially fill the space above the straps to the tops of the purlins. Additional insulation material is applied to the upper surfaces of the purlins. The workmen follow the reels of insulation material and connect the hard roofing material over the insulation material to the purlins to complete the roof structure.

Abstract: An insulated roof structure is formed on an industrial building by mounting a support framework on the purlins in the partially completed roof structure and moving the framework along the length of the purlins. A reel of wire mesh and a reel of sheet material are carried by the framework over each of the spaces between adjacent ones of the purlins and the reels are progressively unrolled and the layers of wire mesh and sheet material are applied to the spaces between the purlins as the support framework moves. Additional insulation can be blown upon or otherwise applied to the sheet material to fill the spaces between the purlins, and hard sheets of roofing material are applied to the purlins as the support framework progresses across the structure.

Abstract: Panel constructions comprising wall or ceiling panels of, for example, fire resistive material such as gypsum board wherein at least one of the lateral edges of one panel has secured thereto a female mounting member and at least one opposed lateral edge of a second panel has secured thereto a male mounting member. The female mounting member has opposed flanges which receive therebetween opposed surfaces adjacent the lateral edge of the panel and is provided with a central elongate channel for making engagement with a like panel to which has been secured the male mounting member. The male mounting member also comprises a channel-like member secured along the edge wherein opposed flanges receive an intermediate portion of the panel and wherein a protuberance or projecting tongue is received in nesting relationship in the channel of the female member. A covering of vinyl or other decorative material, textured paint or other finish is applied to one surface of each of the panels.

Abstract: A ceiling support grid system is disclosed herein and includes a plurality of longitudinally extending support runners which are interlocked together to form an integral grid pattern, preferably a basketweave pattern. The runners are interlocked together by two separate and distinct but cooperating arangements in a rapid and reliable manner and without the need for separate tools and without bending or otherwise deforming any components associated with these interlocking arrangments.

Abstract: A wall arrangement is disclosed herein and includes at least one fixed support member having vertically extending front support face, at least one elongated sheet of material, for example exterior vinyl siding, and a device for attaching the sheet to the front face of the support member to support it in a vertical position. This attaching device includes a longitudinal strip which is connected to the front face of the support member and a plurality of outwardly extending, elongated support elements which are inserted through openings in the sheet material for supporting it in the vertical position just discussed.

Abstract: Method and machine and a log product for log house construction includes improvements in apparatus to shape, and finish the logs, divide into halves or quarter sections for tongue-and-groove assembly construction of floors, walls, or ceiling appurtenant to the log house. Equally-spaced holes between the tongues and grooves provide additional functional uses for utility lines or vertical supports as needed.