Abstract: A machine and process for washing paper stock pulp and similar free-filtering materials includes two or more horizontally-disposed wash drums mounted each in a tank. Two endless filter belts are trained to pass under each of said wash drums and through liquid contained in each of the tanks. A mat of pulp is formed between the two endless filter belts and carried under each of the wash drums for washing therein. Wash liquor passes through the pulp mat as it travels under each of the drums thereby washing the pulp mat, and the liquor passes between the drums and the tanks by gravity flow. After the pulp has been washed it is removed from between the two belts.

Abstract: A process for improving the color yield and the wetfastness properties of dyeings produced on cellulose fibre material with anionic dyes, which process comprises treating the cellulose material before, during or after dyeing, with a cationic fibre-reactive compound of the formula ##STR1## wherein B represents a mono- or polynuclear heterocyclic radical,Hal represents a reactive halogen atom,X represents halogen, lower alkoxy, lower alkylthio, phenoxy, phenylthio, --NH.sub.2, ##STR2## or the group of the formula ##STR3## each of W.sub.1 and W.sub.2 independently represents the direct bond, ##STR4## Z represents hydrogen, lower alkyl or hydroxy-lower alkyl, each of Q.sub.1 and Q.sub.2 independently represents an aliphatic or cycloaliphatic radical,each of R.sub.1, R.sub.2, V.sub.1, V.sub.2, Y.sub.1 and Y.sub.2 independently represents lower alkyl, or lower alkyl or benzyl each of which is substituted by halogen, hydroxy or cyano, oreach of the pair of substituents R.sub.1 and R.sub.2 and Y.sub.1 and Y.sub.

Abstract: A buoy anchoring system includes an anchor device in the form of a weighted annister that pays out line from the center of a fixed, hollow-cored bale during free fall. The line is secured against further pay out after the device impacts the bottom by wrapping about a shaft that is driven upwardly within the bale by the impact. The shaft has a line engaging cross-bar at its upper end, and is held in an extended position prior to impact by a shear pin.

Abstract: An automatic inflatable safety work vest in which a gas is automatically charged into a gas tight chamber forming a floating body upon contacting water, comprises a back part of the vest formed of a non-floating material, a floating body provided at the front of the vest and connected with stretchable bands to the back part and having a gas tight chamber, a pillow integrally formed at the upper portion of the vest which communicates with the gas tight chamber, the pillows being folded over and releasably attached to the outer surface of the back part and a gas charging device in communication with the gas tight chamber and connected to the floating body through a connector, the gas charging device being a flat cylindrical vessel provided with a gas outlet at the bottom surface, a pair of electrodes positioned oppositely and fixed at a side wall near an upper cover portion of the cylindrical vessel, an electric switch provided at the upper portion of the cylindrical vessel and connecting to the electrodes and

Abstract: A flexible band for wrapping about a shoe contour. The band comprises an inner and an outer steel band with a resilient insert arranged therebetween. The inner and outer bands each comprise a toe portion and two side portions. The portions of the inner band overlap, and the portions of the outer band do not overlap. The flexible band also includes an innermost shoe-engaging member attached to the steel bands. The shoe-engaging member has a low friction portion at its toe section and a high friction portion on each side. The present construction permits a longer utility to the band while providing improved flexibility therewith.

Abstract: This invention relates to an automatic self-propelled machine for stripping oil from bowling lanes which is characterized by a solvent applicator made of absorbant material that applies the oil-dissolving solvent to the lane surface, means for moving the applicator into engagement with the lane surface at predetermined points in the excursion of the stripper, a cam-actuated solvent supply system automatically operative to wet the applicator during a portion of its forward travel toward the pin deck and return trip to the foul line, a rotating residue pick-up roller for continuously picking up the liquid and solid residues from the surface of the lane during both forward and return excursions of the stripper, and a moving curtain wiper mechanism positioned between the applicator and residue pick-up roller in contact with the absorbant surface of the latter and preferably also with the lane surface effective during both the forward and return runs to remove the residues from the pick-up drum as it dries the lan

Abstract: The flexible hose of an industrial scale vacuum cleaning apparatus is wound upon and unwound from a drum by a reversible motor which drives four rollers tangentially engaging the hose at a point between the drum and the vacuum intake. The rollers preferably comprise small pneumatic tires inflated to a low pressure and the motor control means are located on the operator's handle connected to the vacuum intake head.

Abstract: An air and liquid tight liquid collecting container includes a cover which may be sealed to the top of the container. The cover includes an inlet port adapted to be connected to a hose which in turn carries a nozzle at the end thereof for picking up liquids. The cover also includes a vacuum port which is adapted to be connected to a standard vacuum cleaner. Associated with the vacuum port is a liquid level sensing device which opens the vacuum port to the atmosphere when the liquid rises to a predetermined level thereby preventing the liquid from entering the vacuum line. A pump, suspended from the cover into the container, pumps the liquid collected in the container to some external desired location.

Abstract: A cart caster having an improved self-centering structure for causing the caster wheel to have a preselected alignment when elevated from a subjacent support surface. The self-aligning structure includes a cam, a cam follower, and a biasing element cooperatively causing the caster wheel to move to a preselected position about the caster axis when load is removed from the wheel as by lifting of the cart. The aligning structure may include a plurality of alignment portions permitting the wheel to be automatically brought to any one of a plurality of different positions about the caster axis, such as to either a fore or aft direction relative to the cart.

Abstract: An animal feeding apparatus for the holding and delivery of feed to animals. The apparatus includes a feed hopper with two inwardly sloping walls and a flow diverter at the bottom of the hopper, splitting and diverting the flow of feed to each of two feeding troughs. The flow diverter extends along the entire length of the feed hopper, being formed by the junction of the rear sloping wall of each feeding trough. The two feeding troughs, extending the entire length of the feeder, are on opposite sides to each other and have a horziontal base portion, a sloping upward rear portion and a sloping upward front portion whose edge is bent back forming a safety edge. Each feeding trough has a plurality of agitators that extend horizontally into the feeding trough and vertically into the feed hopper. The animals through their feeding motion move the agitators which in turn loosen feed in the feed hopper. Individually adjustable feed gates above each agitator control the amount of feed flow.

Abstract: A releasable clasp for a necklace or the like wherein a rigid housing having an open end houses a tubular holder of flexible material with a transverse web having a hole therethrough adjacent the open housing end. Also included is a shaft of rigid material having an enlarged head at one end thereof which is sized so that the shaft head can pass through the hole in the web with the application of a predetermined joining force and can be withdrawn therefrom only upon application of a pre-established withdrawal force. The housing and holder together form a first clasp part, while the shaft constitutes a second clasp part. The shaft may be twisted to detent into a locking position.

Abstract: The clasp is made up of two main parts - a box-like receptor, and a spring clip inserted into the receptor. The spring clip has a spring finger that has a free end engaging an end wall of the receptor for holding the parts in locked position, and the receptor includes a release member for releasing the spring finger, and thereby releasing the spring clip from locked position and enabling it to be withdrawn. The spring finger has a hump that pushes the release member back to inactive position as the spring finger is being inserted into the receptor, to prevent accidental movement of the spring finger to unlocked position, but the hump acts as a camming surface against which the release member works in the releasing movement.

Abstract: In the method of the invention, the slide fastener chain is firmly held by gripping the carrier tape at the very boundary with the lower end of the leg portion of the fastener element with a fixed gripper die jaw and a movable gripper die jaw and then the head portion of the fastener element is forcibly pressed toward the leg portion whereby the bifurcated leg portion is widened by the forcible thrusting of the blade edges of the die jaws into the interstices between the legs and the carrier tape with eventual dividing of the fastener element at the head portion into two pieces to come off the stringer core of the carrier tape easily.

Abstract: The cathode support is made from a mixture of nickel powder and nickel coated particles of an alloy containing nickel and an activator capable of reducing barium oxide to barium by compacting the mixture and sintering it at a temperature between 900.degree. to 1100.degree. C.

Abstract: A machine tool wherein an annular gear is rotatable in a horizontal plane to carry a plurality of pallets between adjacent peripherally arranged machine stations. The gear is lowered as each machine station is attained by the entry of gear support bearings into recesses in the underside of the gear. The pallets are supported on the gear for limited vertical and horizontal movement, and lowering of the gear positions the pallet on an abutment surface in alignment with the machining station. As the gear is further lowered, it is spaced from the pallet so as not to interfere with independent positioning of the pallet by any power actuated positioning means located at each machining station. Thus, the pallet can be adjusted independently of the gear when the gear is in its lowered position, yet is carried by the gear when the gear is in its elevated position.

Abstract: The tool has a shank with a draw bolt threaded in an open recess in one end. A compression ring is mounted on the draw bolt and has an axially tapered outer peripheral surface. A burnishing ring is received about the draw bolt compression ring and axially engages the end of the tool shank. The burnishing ring has an outer diameter which is greater than the maximum outer diameter of the tool shank as well as being greater than the maximum outer diameter of the draw bolt. The burnishing ring has an inner diameter axially tapered surface which mates with the axially tapered outer peripheral surface of the compression ring. When the draw bolt is tightened it holds the compression ring tightly within the burnishing ring, thereby providing a mount for the burnishing ring. The burnishing ring has a precise desired outer diameter for burnishing a bore.

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 method is disclosed for forming an apparatus, where the apparatus is arranged for rotation about a vertical axis, for attaching accessories to a support surface of a repairing and straightening apparatus, for allowing rotational self-alignment of the accessories about the vertical axis, and for allowing the accessories to be substantially in line with the counterforce. The method, in its preferred form, is accomplished by cutting and attaching a thick wall tubing. The thick wall tubing has a diameter substantially equal to but slightly less than the diameter of apertures formed in the support surface and has a height greater than the thickness of the support surface. A first saw cut is made at a depth substantially equal to but slightly greater than the thickness of the support surface and along a chord of the circular cross section of the thick wall tubing. A second saw cut is made, spaced and parallel to the first saw cut and at a depth equal to the depth of the first saw cut.

Abstract: A branch-off seal between a heat-shrinkable sleeve, made for example from a cross-linked polymeric material, and two or more substrates such as electric cables or other utility lines is effected by using a fork member. The end portion of the heat-shrinkable sleeve is threaded between the prongs of the fork member so that, on recovery, the heat-shrinkable material tightens and at least two prongs abut the outer surfaces of the sleeve which surround the substrates so as to retain the fork member in position. The fork is preferably made from a metal such as stainless steel or aluminium.

Abstract: A fastener for securing an object to a concrete mounting pad is provided with an elongated interiorally threaded annular core. The upper section of the core is of a cylindrical outer configuration while the lower section is tapered as a fustrum of a cone to an overhanging ledge at the lower extremity of the upper section. An expansion device includes two half rings, initially held together by tape. The expansion device encircles the conical fustrum just below the ledge. Upward force upon the core pulls a larger portion of the fustrum through the half rings, thus directing them radially outward and securing the expansion device and the core captured by it in an anchor shaft in the concrete. Conversely, downward force on the core removes the radially outward force on the expansion device and allows the anchor to be driven to the bottom of the anchor shaft bore.

Abstract: For inclusion as spacer between the confronting faces of first and second axially spaced apart members mounted for limited angulation about a common axis, the first member having a seal recess formed in one face, the second member having an end face opposite the seal recess, the improvement of: a laminated torsielastic thrust bushing consolidated in the recess as a one-piece part therein, with its nonmetallic laminae so uniformly thin that the part in the axial direction is a substantially incompressible composite piece.

Abstract: A thin sheet metal strip preferably having a thickness less than 0.015 inch, forms a part-cylindrical portion which integrally connects a folded first ear portion and a second ear portion which is also folded in two embodiments. An integral tongue projects from the first ear portion and may have a pair of parallel longitudinal ribs which project inwardly and interfit with corresponding circumferential ribs formed within said part-cylindrical portion. A sheet metal screw projects through holes within the ear portions, and the second ear portion is adapted to converge toward the first ear portion at a substantial angle relative to the axis of the screw when the screw is tightened for producing a positive non-stripping cocking engagement with the screw. In one embodiment, each of the folded ear portions has a pair of generally triangular side flanges for reinforcing the ear portion, and preferably, the screw engages the tongue to urge it against the hose being clamped.

Abstract: The traction device of the invention is for use with a vehicle wheel supported by lugs and having a tire. The traction device has a base with openings for the reception of at least two but less than all, the lugs for supporting the base. A plurality of spaced radial arms are supported by the base with each having an end adapted to extend beyond the outer periphery of the tire and protrude into an icy surface. Each of said ends is adapted to lie in a vertical plane adjacent to the outer side wall of the tire. The end of each arm may advantageously be free to move in and out while being spring biased outwardly, be threadably attached to the arm for movement inwardly and outwardly, or be pivotally connected to the arm for movement into and out of an operative position. The said ends may extend different distances beyond the outer periphery of the tire. Preferably, the base is secured on less than all of the lugs and has a bearing recess accommodating a nut on a lug to which the base is not secured.

Abstract: Resistor elements for MOS integrated circuits are made by an ion implant step compatable with a self-aligned N-channel silicon-gate process. The resistor elements are beneath the field oxide in the finished device, although the implant step is prior to formation of the thick oxide. Resistors of this type are ideally suited for load devices in static RAM cells.

Abstract: There is provided a method of fabricating a semiconductor device wherein in a bonding surface of a silicon substrate of n-type conductivity are formed recesses having each a bonding surface of a higher order plane index than that of the bonding surface of the silicon substrate, and the substrate and electrodes and the like members are bonded together with an aluminum solder so as to decrease a forward voltage drop FVD. After forming the recesses but prior to the bonding with the aluminum solder, phosphor is diffused into a region ranging from the bonding surface to a depth of 20 microns, thereby further decreasing the forward voltage drop FVD. When cooling after the bonding, a temperature gradient is established so that temperature in the silicon substrate is higher than a temperature in the molten aluminum so that the forward voltage drop FVD can be decreased further.

Abstract: The stator of a linear motor is assembled by separately assembling the windings as a uniform configuration, using a dummy to place cables into requisite positions and tieing the resulting coil ends together by end elements. The dummy is of an endless belt variety and is used to assemble the stator winding configuration in endless type fashion. The resulting assembly is placed into the stator core or cores which have been placed along the contemplated track part along which the motor is to move a vehicle or the like, carrying the armature of the motor.

Abstract: A process is disclosed wherein read/write transducers are applied simultaneously to a mass of motion-constrained, pre-machined, air bearing sliders.

Abstract: Open-air compound insulators are made treating a prefabricated glass-filter rod with silane, extruding a rubber layer on the rod, strengthening the rubber layer and bonding prefabricated screens to the rubber layer by vulcanization.

Abstract: High frequency power transistor carriers are made by bonding a metalized ceramic base to a lead frame strip, subsequently gold plating the resultant structure and then cutting the lead frame strip to isolate the base and collector leads while still maintaining the transistor carriers in strip form. Transistor dice are then attached to each ceramic carrier, and each transistor carrier in the strip is then electrically tested. The individual carriers are then separated from the lead frame strip. The individual carrier has wide base and collector leads extending outward from the ceramic base for a substantial distance and then the base and collector leads are narrowed down. When the individual transistor carrier is used in combination with a hybrid assembly, a reduction in lead inductance and total hybrid package size is obtained while exact carrier placement relative to the hybrid assembly is not required.

Abstract: A suture remover comprising a shearing portion having a cutting edge, and a blade having a cutting section. The cutting edge and cutting section are adapted to shearingly contact one another by moving toward and away from each other. An element is provided on the shearing portion which has a contact area. The element is affixed to the shearing portion at the end of the element remote from the contact area and has at least one bend in a plane substantially parallel to the plane of the shearing portion and adjacent the end. The contact area overlies the cutting edge or extends beyond it in the direction of the cutting section. At least a part of the cutting section is adapted to be placed between tissue and a suture therein, whereby bringing the cutting section into shearing contact with the cutting edge causes the suture remover to both cut and grip the suture for easy removal.

Abstract: A nut cutting tool in which a cutting head includes a yoke for embracing a nut to be cut and for supporting a fixed blade as close as possible to the nut, the cutting head guidably supporting a moveable cutter in a cutting plane toward the fixed blade and nut by a thrust from a pressure exerting means at right angles to the cutting plane including a second guidable element in the form of a wedge block operatively associated with the pressure exerting means and having an inclined cam surface facing the non cutting end of the movable cutter for forcibly urging the latter toward the nut to be cut.

Abstract: A device for cutting out and extracting the pulp from a vegetable or fruit, particularly a pineapple, while leaving the peel or rind intact for later use. The device has a central coring tube depending from a handle and secured for rotation therewith. The coring tube enables the pulp to be severed from the hard, fibrous core of the fruit or vegetable as it is displaced axially. A vertically cutting blade also depends from the handle and is spaced radially from the axis of the device so that as the handle is rotated the cutting blade describes a cylindrical cut adapted to sever the pulp from a shell including the peel or rind. The device also comprises one or more radial cutting blades extending from the coring tube to the radial position of the vertical cutting blade depending on whether a cylindrical mass of pulp is desired or rather a stack of slices. A plurality of radial blades may be fixed to the coring tube.

Abstract: A safety brake for a power saw comprises mainly a brake element arranged to stop the cutter chain when actuated by an actuating member acted upon by a control handle arranged to be automatically operated when the saw operator is beginning to lose control over the saw, whereby the saw will begin to swing upwards against the operator. The actuating member being arranged to form an angle against said control handle and being formed as an oblong flat structure guided to be movable between an inactive position, occupied when the saw operates normally and to an active position for effecting a brake effect on the cutter chain when the saw begins to move uncontrollable. A spring being arranged to retain the actuating member in inactive position by urging it in engagement with a latch, whereas same spring is adapted to effect a positive movement of the actuating member to its active position when it is unlatched by the manual influence from the control handle.

Abstract: Apparatus for use in drawing designs has a tray dimensioned to receive a sheet of drawing paper of predetermined dimensions with the side walls of the tray having lengthwise slots. One end of a wand is insertable through a selected slot with the other end serving as a handle and the wand is held in the slot for sliding and pivotal movement relative thereto. At least one stencil plate is detachably attached to the end of the wand within the tray and the wand is of such length that the stencil may be moved over a substantial portion of the sheet.

Abstract: Disclosed is an electronic integral drafting instrument which measures its own linear displacement and displays any desired multiple or submultiple of the actual displacement. The instrument includes a straightedged plate which houses: a displacement sensor with a driving wheel which projects beneath the plate, an electronic up-down counter and calculator type circuit, a scale factor keyboard, an electronic digital display, and a sensor which detects and annunciates if the displacement sensor driving wheel does not make proper contact with the drawing media. One embodiment of the invention is easily attached to conventional drafting machines as a replacement for regular straightedges and scales. A second embodiment of the invention may be used without a drafting machine. The leading straightedge of the instrument can be lifted or lowered into contact with the drawing media. An extension straightedge may be attached to the leading edge of the instrument.

Abstract: A process for drying solid wood, particularly in the form of planks or semifinished products, by means of superheated steam is described.The main feature of the process is to comprise superheating surges for heating the wood above 100.degree. C. alternating with cooling surges for cooling the wood below 100.degree. C., in order to improve the plasticization of the wood during the entire drying process.

Abstract: For initial alignment of a simulator laser-projector with a weapon, the weapon is boresighted on a target, the projector is fitted and the laser beam is scanned stepwise across the target successively along orthogonal axes. The range of steps on each axis for which a return from the target occurs is sensed, and the step corresponding to the median of all the returns taken as the position for which the laser beam is centered on the target. These calculated positions are stored and used as the reference positions during simulated firing of the weapon. The detection of the position of a target for hit/miss determination is achieved with the same scanning and median selection procedure.

Abstract: Disclosed is a reinforcing pad adapted to be glued or otherwise secured to the high-wear areas of athletic shoes. Specifically, the pad comprises generally a tear drop or triangular-shaped piece of high denisty or high impact material such as polyurethane having a durometer of from about 70 to about 95 on the Shore A scale. The body is adapted to be secured to the shoe with the hypotenuse of the triangle or one side of the tear drop shape extending generally fore and aft of the sole and with the thicker side of the shape adjacent an edge of the sole.

Abstract: A reversible shoe boot is provided with one sole having normal slip resistance and when turned inside out the second sole surface with ice slip resistance with a semi-rigid inner sole protecting the feet and the slip resistance surface.

Abstract: An athletic or sport shoe, for instance a cross-country skiing shoe or a tennis shoe is disclosed, which has a sole formed of, for instance, polyurethane which is molded at the upper portion of the shoe. In the material of the polyurethane sole there is molded a resilient or spring plate, formed of a suitable metal or plastic. The resilient plate is provided at its front region with flange means serving as support or contact means for the ski binding jaw or the like and holes or perforations for the binding pins or mandrils. The resilient plate extends over essentially the entire length of the shoe sole and is only visible through its flanges at the sole edges. The plate is structured such that at the region of the ball of the foot it is easier to resiliently bend while at the region of the shoe stiffener it is practically hardly resiliently bendable, so that the rolling-off of the foot is possible practically without any hinderance, but the foot is supported laterally and against torsion.

Abstract: A heat-curlable identification carrying means comprising a transparent sheet, and an adhesive backing layer for attaching the means to a substrate, the means optionally having an intermediate sheet bearing or suitable for bearing indicia.

Abstract: A tag and label holder for displaying merchandise is molded as a unitary structure with end sections delineated by narrow, weakened webs. The end sections can be broken away from the central portion of the label holder and discarded to alter the length of the label holder to the size of the price tag or merchandise identification label to be mounted therein.

Abstract: This invention relates to a display device for attachment to a gable-topped cardboard container of the type employed in packaging milk and the like. The display device comprises a hollow square sleeve which telescopes over the top of the carton and a display panel hinged to the upper portion of the sleeve and having a triangular opening adapted to fit over the gable-top of the carton. The device is fabricated from a single cardboard blank and is readily placed in a flat folded condition for storage and shipment.

Abstract: A pipe identification system includes a marker fabricated from a rigid material and having indicia imprinted thereon providing information on the pipe contents. Flow direction markers are removably secured and integral with opposite ends of the contents marker. Each flow direction marker has indicia thereon indicating flow direction. One or both of the flow direction markers may be separated from the contents marker prior to attachment of the marker to a pipe. One or more straps engage the markers for attaching the markers to a pipe.

Abstract: An illuminated advertising display device produces changing visual effects by placing a panel having a pattern of holes at the front of a light box with some of the holes defining alpha-numeric characters, and reciprocating behind the panel a shutter which has a pattern of transparent spots each of which registers with a hole in the panel at some point in the reciprocation of the shutter, with some of the spots registered simultaneously with all the holes that define the alpha-numeric characters. The panel has a forwardly facing reflective surface, and spaced forwardly of the panel is a light transmitting reflective sheet. If desired, the transparent spots may be tinted in several different colors.

Abstract: A multi-sided display device assembleable from a plurality of sheets bound in book-like fashion by a binding allowing free movement of the sheets. Each sheet is cut-out to define a display flap which is selectively displaceable away from the uncut bound portion. The cut-out portions are adapted to form a self-locking coupling with an adjacent sheet to form a three dimensional device with a substantially regular polygon formed on a plane perpendicular to the sheets. The invention allows fabrication of the device from a flexible material.

Abstract: An emergency warning traffic sign comprises a conventional stop sign which has been divided vertically in the middle into two sheet portions carrying portions of the message on one face of each of the sheet portions. The sheet portions are connected by a hinge such that a first of the portions may be mounted to a traffic signal post and the second sheet portion may be rotated between a first position in which the message is obscured to a second open message position. A locking bar is attached to the first sheet portion and is pivotally movable across the back of the sign and within its perimeter to lock the sign in both its open and closed positions. In a second embodiment of the invention, another sign carrying a different message is also divided vertically into a third and forth sheet portions and these sheet portions are hingedly connected to each other.

Abstract: An ice fishing device provides an indication of the presence of a fish on the line. A magnetically actuated switch and a magnet are positioned in close proximity. A metal tab is connected to the fish line and is inserted between the magnet and the magnetically actuated switch. When in its inserted position, the metal tab shields the magnetically actuated switch from the magnetic field produced by the magnet. When sufficient force is applied to the fish line, the metal tab is pulled out of its inserted position. This causes the magnetically actuated switch to change state in response to the magnetic field from the magnet. An audible or visual signal, or both, is provided in response to the change in state of the magnetically actuated switch.

Abstract: A bubble pipe comprises a wide outer tube and one or more shorter narrower inner tubes that project beyond the outer tube. The inner tube or tubes may be slidable within the outer tube.

Abstract: An improved frictional interconnecting toy block arrangement having a body means with walls defining a body cavity. The interconnection of toy blocks with each other is achieved by a female coupler means extending through the cavity of the body means of the toy block and having an aperture adapted to receive a male coupler means. Male coupler means which extends outwardly from a wall of the toy block is insertable into the aperture of the female coupler means for frictional retention therein. The male coupler means are generally fabricated as part of the body means of the block. The body means of the block is fabricated of two separate body members coupled together along a median plane. Coupling means are provided on the two body members to retain the two body members together.