Abstract: An apparatus for washing, cleaning or polishing inner surfaces of a hollow cylindrical container, comprising: a rotatable vertical shaft which is adjustable in its length to obtain a desired shaft length to match the depth of the container; at least one brush-supporting arm extending substantially horizontally from said vertical shaft for washing the inner side surface of the container and consisting of a plurality of brush-carrying detachable arm-constituting coupling members so as to be adjustable for the inner diameter of the container, and an inner bottom surface washing brush-supporting arm consisting of a plurality of brush-carrying detachable coupling members, one of these latter coupling members being pivotably connected to the lower end portion of the vertical shaft so that their brushes fit with an inclined inner bottom surface.

Abstract: A suction power unit for a wet vacuum machine includes a dome-shaped housing closed off by a bottom wall with an inlet defined in the bottom wall and a centrifugal blower aligned with the inlet. A second wall is parallel to the bottom wall and spaced therefrom defining an exhaust chamber about the centrifugal blower and hermetically separating the motor on the centrifugal blower from the exhaust chamber. An inlet opening in the second wall and a third wall spaced from the second wall and parallel thereto define a chamber, and a second centrifugal blower is provided in the so-formed chamber between the second and third walls with the motor beyond the third wall hermetically sealed from the chamber formed between the second and third walls.

Abstract: The closing mechanism of an automatic door closing arrangement is partly enveloped by an elongated unitary casing of sheet metal. Flanges on two of the longitudinal casing walls bound therebetween an opening in the casing which may be closed by a panel releasably retained by the flanges. Provisions are made for attaching the casing to a door and for linking the output element of the closing mechanism to a door frame. The panel may be removed simply and without tools for access to the mechanism or for replacement by another panel of different decorative appearance.

Abstract: A hinge with two elongated flexible flange portions which can be fastened to an article by sewing or stapling. Each flange portion includes a plurality of integral aligned knuckles which engageably cooperate with the knuckles in the other whereby a pin can be passed through the knuckles of each flange portion forming an elongated hinge.

Abstract: The pith removal from bagasse fiber is significantly enhanced by the flow of fiber directly from one depithing zone to a second depithing zone without any intermediate settling or pilings of the fiber. The fiber is maintained in a separated condition during the flow from one depithing zone to another depithing zone. The result is a bagasse fiber having a greater quantity of the pith removed with less fiber damage. It is also advantageous to provide a number of conveyors to transport fibrous material to a dual zone depithers and for the removal of depithed fiber and pitch from these depithers. This reduces fiber handling before, during and after depithing.

Abstract: A clasp is designed to be attached to an annular personal ornament or furnishing, such as a necklace or bracelet, to form a portion of the same. The clasp comprises two metallic parts of substantially the same shape adapted to be coupled together by the combined action of magnetic attraction and mechanical engagement, enabling the person to put on and off the ornament or furnishing with great ease. The clasp will resist tension, which is the most frequent force acting thereon during use, by the coupling force provided by the mechanical engagement, so that it will never decouple of itself.

Abstract: A slide fastener is disclosed including mounting tapes each having a warpless area or a void area formed in them near their adjacent edges. Coupling elements are secured onto the edges of the mounting tapes and plugs of material interconnecting the legs of each coupling element extend through the void area or warpless area of the mounting tapes. Interconnecting straps are also formed in the warpless areas linking each adjacent pair of the coupling elements.

Abstract: A slide fastener stringer is disclosed which has a fastener element in the form of a helical coil having a row of successive loops woven into a longitudinal edge of a stringer tape simultaneously as the tape is woven. The fastener element is held stably in position by a stuffing cord which is anchored therein by weave threads. A guide cord is arranged such that it may be deformed under tension applied by a binding thread to provide slider guide surfaces.

Abstract: The present invention relates to key clips adapted for a key case and comprises a vertical section and extending from such vertical section a horizontal section. The vertical section is equipped with an indent or ridge which is disposed spaced apart from the lower end of the vertical section. The end of the horizontal section is bent into a first short straight line section, which, in turn, is further bent into a second short straight line section. The second short straight line section is bent downwardly at its end to form an inverted section which terminates spaced apart slightly above the indent or ridge to operate flexiby in connection with the ridge. The key clips are designed to suspend on the horizontal section two or more keys which can be disposed parallel to each other, thereby, due to the effect of the vertical section combined with the horizontal section, avoiding the drawbacks inherent in the conventional "tear-drop" design.

Abstract: The attachment device is made of two piece separable construction for use in securing flexible films and fabrics, hereafter referred to as material. One element has two longitudinal grooves facing in opposite directions, one groove being larger than the other groove. The other element has two longitudinal beads that positively interlock with the grooves of the first element when the two elements are pushed together by one of said beads and the larger groove acting as a pivot and the other bead and smaller groove being engageable by relative rotational movement of said elements about said pivot. Flexing of one or both elements allows for engagement of the shallower groove and complementary bead. The said interlocking action of the two elements is utilized to capture and secure material placed between the two elements. The shallower groove and complementary bead are disengageable by relative rotational movement of the two elements about said pivot when the two elements are pulled apart.

Abstract: In a band-cutting machine comprising a lower frame supporting a cloth-drawing mechanism, a control device for mechanically connecting the rotating parts of the machine, an upper rotatable frame positioned on said lower frame supporting a roll for cloth and a roller stretcher, the improvement which comprises a stop switch positioned on said lower frame, an actuator and a stretch detector carried on said upper rotatable frame, the detector actuating the stop switch through said actuator when the cloth is no longer in a stretched condition when passing through the roller stretcher.

Abstract: The specification and drawings disclose an anode assembly for use in electrolytic cells, and apparatus for forming such assemblies. The anode assembly comprises an anode riser to which is joined a parallel pair of metal sheets which form anode surfaces. The sheets are joined to the riser by connecting means which permit movement of the sheets toward and away from one another while maintaining their parallel relationship. Additionally, the connecting means is such that it maintains a tension on the sheets to prevent them from warping or assuming a non-planar configuration. The disclosed apparatus permits assembly of the sheets to the riser in a simple, rapid manner.

Abstract: A method for converting a standard, production van-type vehicle to a multi-passenger commercial transportation vehicle whereby the chassis body, front passenger door and roof of a production van-type vehicle are transformed to a new commercial multi-passenger vehicle which is convenient to board and unboard under driver control, which permits upright passenger mobility, and which at the same time is structurally secure.

Abstract: Method and apparatus for attaching a transducer to an object having characteristics to be measured. At least two attachment elements each including a number of pointed members are interconnected by a sensing element. Each attachment element includes a movable wedge member and at least one fixed wedge member whereby initial movement of the movable wedge member with respect to the fixed wedge member subjects said pointed members to a pressure force of a specified magnitude to press the pointed members into the surface of the object. Further movement of the movable wedge member with respect to the fixed wedge member generates a holding force on the pointed members less than the initial pressure force to hold each attachment element in engagement with the object regardless of transverse forces acting on the attachment elements.

Abstract: In a tip for a ball point pen including a cylindrical metallic tip body having a pointed end, a ball receiving hole having its opening at the pointed end of the tip body, a ball supporting seat of a plastic held in the bottom of the ball receiving hole, a bore for delivering ink to the ball receiving hole through the ball supporting seat and having its opening at the end of the tip body opposite to the pointed end, and a ball rotatably received within the ball receiving hole and supported on the seat, there is provided an improvement constituted by a recess formed in the bottom surface of the ball receiving hole, the recess having at least one angular portion, the ball supporting seat being deformed to fill all the corners of the bottom of the hole including the recess, thereby preventing the ball supporting seat from rotating in the bottom surface of the ball receiving hole.

Abstract: The present invention provides methods and apparatus for installing a cylindrical body, having a plurality of external axial splines, within a stack of annular plates, said plates having radially inner teeth for meshing with said splines. The method includes the placement of a cylindrical alignment tool, having a plurality of external splines, in a position subsequently to be occupied by said cylindrical body. The annular plates are placed about said alignment tool, with the teeth of said annular plates meshing with said alignment tool. Then, an axially compressive force is applied to said stack of plates to maintain axial alignment of the teeth of adjacent plates. This axial compressive force is supplied by a high pressure fluid which is communicated to a piston engaging said stack of plates. Then, the alignment tool is removed while said axial compressive force is retained on said stack of plates.

Abstract: The present invention comprises a method of erecting an elevator system for a building comprising fabricating an elongate elevator shaft framework section, and mounting the framework section in an upright position at the building site. After construction of at least a part of the building, an upper portion of the framework section is secured to the building. An elevator car and elevator accoutrements may be installed in or on the framework section prior to mounting thereof and/or prior to construction of the building and securing of the upper part of the framework section thereto.

Abstract: A monolithic charge-coupled infrared imaging device (CCIRID) is fabricated on N-type HgCdTe. A native oxide layer on the semiconductor is used, in combination with ZnS to provide first level insulation. An opaque field plate over first level insulation is provided for signal channel definition. Second level insulation (ZnS) is substantially thicker than the first level, and is provided with a stepped or sloped geometry under the first level gates. Input and output diodes are provided with MIS guard rings to increase breakdown voltages.

Abstract: The method of tuning a flyback transformer in a cathode ray tube control system, for minimum ringing, which comprises the steps of adjusting the lateral position of the center plane of the high voltage or secondary coil, with respect to the center plane of the low voltage or primary coil, placing an electric sensor in the vicinity of the high voltage coil to pick up a signal, which is a function of the current in the high voltage coil, and applying that signal to an oscilloscope, and noting the change in amplitude of the ringing component of the signal as a function of the lateral displacement between the two coils. By this means, the selected relative position of the two coils which provides a minimum amplitude of ringing is found and the coils are locked in that relative position to each other and to the magnetic core.

Abstract: A filament served bondable conductor is described. A metal wire is wrapped with an insulating yarn then suspended between two supports. After passing over the first support, the wire is immersed in a varnish, excess varnish is removed, and the varnish is cured in an oven before the wire passes over the second support. The wire is again suspended between two more supports. After passing over the third support the wire is immersed in an enamel, excess enamel is removed, and the enamel is cured to a non-tacky B-stage in the same oven. The wire can then be wound on a take-up reel until needed. The wire can be formed into coils and the coils heated to fuse and completely cure the enamel.

Abstract: Method and apparatus are provided for press-fitting caps on electric parts and the like. The apparatus has a device for feeding component rods of electric parts to a rod-conveying wheel provided on its circumference with lateral equally spaced grooves for receiving the rods fed from the rod-feeding device one by one, and a cap-feeding device for feeding caps to a pair of cap-conveying wheels each provided on its circumference with lateral equally-spaced grooves for receiving the caps fed from the cap-feeding device, the cap-conveying wheels being arranged symmetrically and obliquely with respect to the rod-conveying wheel so that the lower ends thereof come in contact with the lower end of the rod-conveying wheel thereby to press-fit the caps on the rods successively, and the rod-conveying and cap-conveying wheels being rotated in synchronization with one another.

Abstract: An article placement system for applying a plurality of articles to a substrate, each article placed in a different location and perhaps at a different angular orientation on said substrate. The system includes a base with a walking beam mounted to the base which has an axis of bi-directional movement, and a direction of length along the axis. A plurality of article transfer members is mounted to the walking beam at axially spaced-apart locations from one another. Conveyor means extends axially beneath the article transfer means for conveying substrates to positions beneath successive ones of the article transfer means. A plurality of article supply members is mounted to the base. Each has a respective delivery point where it provides an article to a respective one of the article transfer means. Positioning means is provided for locating the article transfer members and the article supply members relative to each other to provide for selectively adjustable placement of the articles.

Abstract: A method for making an electronic package assembly of the type having an insulator pin carrier, a thin, i.e. substantially five microns, flexible printed circuit (PC) polyimide member having printed circuit conductors bonded to the heads of the pins of the carrier, and one or more integrated circuit (IC) chips with a high density (i.e. 100 or more) input/output I/O terminal array on the bottom surface of each chip bonded to a corresponding registerable array of PC conductor pads of the polyimide member. The forming, curing and circuitizing of the polyimide member, the bonding of the I/O terminals to the pads of the PC member, and the bonding of the pin heads to the PC member are done on a temporary support or fixture. The method provides a reliable manner for fabrication of the package assembly which minimizes the risk of destroying the flexibility of the PC member and/or its integrity during the making of the assembly and/or the subsequent thermal cycling associated with the assembly.

Abstract: The object of the invention is to provide a portable hand operated electrically powered paint scraper compact, sturdy maneuverable and with a positive reliable drive to reciprocate a scraping blade the working surface of which may be both protected and regulated.Another object of the invention is to convert the rotary drive of an electric motor into a reciprocating motion of a blade holder with a dual drive linkage system.Another object of the invention is the provision of a dual linkage drive system which will apply maximum thrust to the working blade and working thrust even should one of the linkage units of the drive fail.A further object of the invention is the provision of a tool as above described including its own internal blower system to cause material removed by the blade to be blown away from the work area.

Abstract: A tool for holding lines such as are used in guiding paving machines, in earth moving and leveling, and the like, comprising a stake, ordinarily a length of cylindrical metal rod or tubular stock with a ground penetrating point, a line holder of similar, lighter stock and having an offset or angulated end portion to which the line is connected, and a unique clamp for mounting the line holder on the stake with multi-mode adjustment capability.

Abstract: The present invention discloses a new and useful clamping arrangement for use in an upstanding drapery manufacturing device including frame means; a vertically adjustable trolley means; reference means defining a horizontal reference plane adjacent the lower end of the frame means and carriage means upon which are mounted marker means and cutter means for horizontal movement with respect to the upstanding frame along the reference means.The improvement provided by the present invention comprises combining with such present device an elongate clamping means located adjacent the lower end of the frame to secure the lower end of a length of fabric as it is being marked and/or cut. The clamping means provided includes an elongate clamping base secured to a transverse support member adjacent the lower end of the frame, an elongate clamping bracket pivotably connected to the clamping base to close on a clamping bar to secure the lower portion of a length of fabric.

Abstract: Apparatus for checking diameters of workpieces in a broad range of operation, including two arms moving with a scissorwise movement.The two arms carry relevant measuring heads and are coupled to coaxial shafts.A rotary transducer has two moving elements coupled to the coaxial shafts. A processing and control circuit includes pre-selectors for zero-setting the apparatus with reference to different diameters to be checked. The processing and control circuit provides a measurement signal depending on the output signals of the measuring heads and of the rotary transducer.

Abstract: An indexing head has a plurality of co-axial discs rotatable relative to each other. A first disc carries an indexing pin receivable in a series of equi-angularly spaced recesses of a second disc. A third disc is angularly settable relative to the second disc by means of gauge blocks, and is lockable after setting by locking means. A tool shank can be releasably held in an axial bore of the first disc. When used in an oil bath of an erosion machine, the head is fitted with a bellows skirt to prevent the oil reaching the discs.

Abstract: A target comprising a displacement sensitive photodiode perpendicularly disposed with respect to the measuring axis perpendicular to the runway surface is provided above a runway surface under aircraft load. A laser beam is directed towards the diode and signal processing circuits coupled between the photodiode and display means during aircraft loading, and subsequent to aircraft load removal provide signals to the display means representative of displacement of runway surface.

Abstract: An alignment tool for aligning the pulleys of a belt drive in three planes. The device includes a clamp releasably attached to each pulley which mounts a member extending normally to the face of each pulley. Each member has a universal joint at each end and an adjustable link joins the universal joints. Slidable guides oppositely disposed on each side of the universal joints indicate alignment of the pulleys in two planes when the faces of the guides are parallel. The device may also be used to determine if the pulleys have become angularly misaligned.

Abstract: An apparatus for determining the distance on the earth between (a) a point below an observation point at a known height, and (b) the base of an object of a known height. The apparatus includes a stadimeter having two pivots spaced from one another and two levers mounted for pivotal rotation with a mirror on each lever which face one another and are in parallel. An object height adjustment assembly is included which has a carriage with guide means and a member for movement perpendicular to the centerline of the guide and which member bears against the lever arm which tilts the lever arms upon movement of the member, the lever arms being biased into a normal position. Reference markings and a reader indicia are included.

Abstract: A pair of upright stands are provided and include enlarged bases by which the stands may be supported on variously elevated support surfaces. Each stand has a vertically elongated support mounted thereon for adjustable vertical positioning therealong and each stand has a scale thereon by which the positioning of the support therealong may be precisely determined and adjusted as desired. Each support includes an upstanding transparent tube section and the lower ends of the tube sections are connected by an elongated flexible connecting tube member including an expandable and contractable reservoir.

Abstract: Apparatus including a chamber within which are mounted spaced rollers and an elongated housing interposed between a pair of rollers for heating or cooling a web transported over the rollers. A suction device in fluid communication with the chamber establishes a pressure differential on opposite sides of the web for assisting in producing a predetermined angle of contact of the web with the rollers, and for drawing fluid from the housing along the surface of the web for heating or cooling the web.

Abstract: A process for heat-treating and, in particular, for drying and/or fixing a continuously moved fabric web in a treatment unit comprising at least two treatment zones through which the fabric web successively passes, using a hot gas stream recirculated in the treatment unit, a certain quantity of waste gas being continuously removed from the treatment unit and freed from constituents present in it and some of the waste gas thus treated being returned to the treatment unit after reheating, the rest of the waste gas being released into the atmosphere.

Abstract: An automatic control for a clothes dryer embodying microcomputer controlled apparatus adapted to maintain optimum drying efficiency with minimum risk to the clothes fabrics. The control operates the dryer at maximum heat input rate and a minimum or normal low air flow rate through the drum during the initial warm-up period and the ensuing period during which the moisture removal rate is relatively constant. During these periods, the inlet temperature is monitored and when it exceeds a "fabric-safe" level, the air flow rate is increased and the heat input is reduced preferably after an established time delay to alow conditions to stabilize in the drum after the air flow rate is increased.

Abstract: This invention relates to heat treatment of textile products.The apparatus comprises vertical furnaces (5) each having two furnace ducts (29, 30) carrying blowing nozzles (36) and suction nozzles (37), respectively. In the ducts of the last furnace, there are arranged movable horizontal partitions formed by the selective closure of baffles (81-1, 81-2, ... 81-5, 91-1, 91-2, ... 91-4) arranged at fixed levels and preferably constituted by butterfly-valves (82) pivotally mounted on horizontal parallel axes (83).The invention is applicable to the heat treatment of continuous textile products, such as threads, ribbon or strip material. (FIG. 4).

Abstract: A teaching aid for use with equipment having an instrument panel provided with at least one of operating elements and diagnostic instruments. The teaching aid includes one or more charts which are removable in a predetermined sequence in steps from the instrument panel. The charts located beneath a removed chart in an instruction step are provided with openings associated with the operating elements to be exposed for operation in a given teaching step. The charts located beneath a removed chart in a teaching step may also be provided with windows matching the diagnostic instruments to be exposed for reading in a given teaching step.

Abstract: A light insole, with a high modulus of elasticity, which has a shank comprising a fiber-reinforced resin sheet and which is produced by putting a shank element on an insole element and heating under pressure to mold the sheet and adhere the sheet to the insole element.

Abstract: A safety shoe instep guard of compound curvature conforming generally to the shape of the human instep is constructed as an integral part of the shoe or secured to the shoe adjacent at least the lower end of the guard and extends upwardly from the region of the toes. The guard includes a plurality of elongated generally arched-shaped rigid strips extending transversely of the instep and are articulated together in overlapping relation to provide an armored protector assembly having sufficient flexibility to permit normal use and movement of the shoe. The articulated rigid strips are provided with an upwardly directed, generally arcuate arch extending transversely of the individual strips, with the arcuate arches of adjacent rigid strips overlapping and cooperating to form a continuous upwardly directed reinforcing ridge extending substantially the full length of the articulated armor assembly.

Abstract: Polymetallic nodules are collected by means of a plurality of self-propelled vehicles which move upwards and downwards between the sea floor and a surface platform under the action of excess ballast which is partially and progressively released as the vehicle approaches the bottom. The vehicles are propelled along the sea floor by means of at least two supporting units each having at least one helical propulsion fin, the remainder of the ballast being released in order to return the vehicles upwards for docking, unloading and energy-recharging in the surface platform.

Abstract: A dredging and treatment apparatus is provided for the working of alluvial deposits in deep waters in excess of 100 meters. The apparatus comprises an elongated pontoon having a container at one end and a treatment plant at the other. A plurality of grab units mounted on rails are movable from positions laterally of both sides of the pontoon to discharge positions over said container. A bucket elevator is pivoted at its upper end to support means on said pontoon so that its lower end may be moved to a position relative to the container section in accordance with the level of the material in the container. The treatment plant is thereby able to receive the material at a constant rate for onboard processing, the tailings being discharged back into the sea.

Abstract: An excavating tooth especially adapted for use with large front end loaders which encounter repetitive jacking stresses, the point component of the tooth being equipped with uniquely sized bearing surfaces and rearwardly extending top and bottom tongues for the support of a vertical locking pin.

Abstract: A flat rectangular envelope has at least one wall which is transparent; the envelope in one form being fabricated from plastic film. Elongated mounting margins are formed along two side edges of the envelope, each having longitudinally spaced mounting apertures to enable the mounting of the envelope on a suitable support. The mounting apertures may be spaced to enable securing either edge of the envelope in a three-ring binder, or the envelope may be secured to other supports by means of ties. The mounting margins include some reinforcing means for improving the tear resistance of the mounting apertures. A plastic zipper is provided to close the top openable edge of the envelope. One wall may be formed from a magnetic material enabling the mounting of magnetic markers on the exterior of the transparent wall. The envelope may be secured to a rigid mounting board with coacting cords, which enable the envelope to be flip-flopped on the board without removal from the board.

Abstract: Microfiche cards and the like are held in a file enclosure between file-segregator cards. The segregator cards are shaped to fit on and slide along longitudinal rails. To promote fanning of the segregator cards when they are compressed in a particular way, they have added thickness in a zone near their bottom edges. Two independently adjustable compressors are provided, one above and one below the added-thickness zone. By manipulation of the compressors a user can fan the file to a desired extent, controlling the fraction of the group of segregator cards which fans, and the angle between the adjacent fanned segregator cards, or can maintain the file tightly closed.

Abstract: The invention relates to a visible index, and to a novel carrier for the records of a visible index, in which the records are hooked over retaining flanges which extend inwardly of the V-shaped channel portions of carriers which also comprise spacer portion which extend above the apices of the channel portions and locate respectively in the channel portion of the carrier directly thereabove, to provide an overlapping array of the records hooked on the carriers and also further to inhibit detachment of a record hooked on a retaining flange, as well as optionally also further records attached to the carriers, by the internesting of adjacent carriers.

Abstract: An automatic and semiautomatic small caliber conversion system for automatic or semiautomatic shotguns and rifles such as, for example, M-16 and AR-16 rifles including a uniquely designed three element structure and associated ammunition feeding means to permit the use of smaller caliber, inexpensive ammunition in rilfes and shotguns designed originally for larger caliber ammunition. The system includes a bolt/receiver assembly which easily replaces the bolt carrier of the, for example, M-16 rifle, and a magazine assembly which can be inserted by hand into any standard, for example, 0.223 round M-16 magazine. The bolt/receiver assembly is made up of three sub-assemblies, a receiver, a bolt, and a recoil spring. The receiver sub-assembly includes a section of a circle with a short barrel section in the front which fits into the M-16 chambers, a receiver lug at top rear to locate it within the M-16 chamber and prevent its rotary or linear motions and a guide rail.

Abstract: A hook setting apparatus which supports a fishing rod and is triggered responsive to the fish jerking on the bait secured to the rod through a fishing line. The apparatus includes a support member disposed in the substantially upright position which pivotally carries on its end portion a second member which supports a rod holder. A spring assembly biases the second member in a predetermined pivotal direction for setting the hook in the fish's mouth. A trigger assembly which is mounted on the support member maintains a second member in a predetermined pivotal position by counteracting the forces applied to the second member by the tension spring assembly. The trigger assembly releases the second member responsive to a fish jerking on the fishing pole such that the tension spring assembly thereby sets the hook in the fish's mouth. The force required to trigger the device can be adjusted such that fishes of various sizes will activate the device.

Abstract: A trolling or casting fishing lure combines a tail-wiggling artificial worm with a plug for imparting non-spin and non-surface-skimming stability to the lure. The plug comprises a hollow tubular body formed with a beveled leading end connected at an apex thereof to the fishing line and to a fish hook at a point on the trailing end of the body located in straight line to the apex extending parallel to the longitudinal axis of the body, the fish hook being baited with the artificial worm having a flat crescent-shaped tail to which the wiggling motion is imparted when pulled through the water.

Abstract: A disposable trap for small animals, such as mice or similar rodents, in which a pair of co-axially slideable, interfitting plastic members, namely a hollow plunger and an outer housing therefor, are biased axially towards one another by means of an axially imposed external force supplied by an elastic band, or the like, operational to move the two members toward each other. The plunger is substantially enclosed on all sides except for an animal entrance to its hollow interior and the outer housing is fully enclosed except for one end into which the plunger co-extensively fits. When the two members are axially collapsed so that the outer housing surrounds the plunger, the animal entrance is closed off to entrap an animal within the interior of the plunger. A flexible cantilever type trigger plate extends from one end of the outer housing into the trapping chamber of the plunger and suitable detent means are provided to maintain such members in their separated or extended condition.

Abstract: A dental toy including at least one simulated jaw, and preferably two jaws hinged to each other for movement between open and closed positions. Each jaw carries a series of tooth-retaining means, such as pockets for accommodating the roots of simulated teeth. Each jaw may include a partly circular plate, the tooth-retaining means being located in an arcuate pattern near an edge of the plate. The teeth may be simulated by a soft moldable material, and a mold may be employed to shape the material into teeth. Alternatively, the teeth may be rigid and have simulated cavities fillable with a soft moldable filling compound. One or more simulated dental tools are provided, such as a drill body having changeable drill and brush bits rotatable by a mechanism within the body, a dental mirror, and tooth-holding tongs.