Abstract: A game assembly includes a plurality of toy blocks or cubes containing passsageways which are strategically stacked so as to determine the path of a ball dropped through interconnecting passageways within the arrays of stacked blocks or cubes. The blocks or cubes may be strategically reoriented during play so as to change the path of a ball dropped through the blocks or cubes. The game involves inspecting and/or memorizing moves made by the players taking part in the game, as well as geometric orientation of the blocks or cubes, so as to define a desired path for a ball which is dropped through the stack. A collection plate below is marked with certain designated areas, preferably in color and each player tries to get as many balls as possible through the stack and into his designated area or to predict the exact location for each ball.

Abstract: Internal combustion engine with one or more compression gap zones between piston and cylinder head at each side of a reduced size combustion chamber, and deflection means in the combustion chamber through which unidirectional rotary flow is induced in the fuel charge.

Abstract: Catalyst for methanol synthesis, containing(a) as catalytically active substances copper oxide and zinc oxide, which, if desired, may be at least partially reduced, and(b) as thermostabilizing substance aluminum oxide.The proportion of pores with a diameter of 20 to 75 .ANG. (mesopores) is at least 20% and the proportion of pores with a diameter of more than 75 .ANG. (macropores) is at most 80%. The desired pore distribution can be obtained by using colloidally dispersed aluminum oxide or hydroxide in the production of the catalyst.

Abstract: An improved radial braking system uses the power of the cyclist's back pedaling to bring the braking member into contact with the rim of the wheel. The system allows for the direct contact of the braking member with the middle portion of the outer surface of the rim rather than to the side of the rim, as is common with the caliper type brakes. A rim having a laterally disposed lip for mounting of the spoke allows for an unobstructed middle portion for contact with the braking member.

Abstract: An apparatus and a method for use in dental reconstruction work in the production of cast dental models and dental dies includes a U-shaped base member having a negative cavity in its top planar surface and a complementary U-shaped member in the form of horizontally disposed plate having a series of cast dowel-like members in the form of a dental arch depending from one surface of said plate and adapted for slidable reception in the negative cavity of said U-shaped base member. The other surface of said horizontally disposed plate of said complementary U-shaped member contains a series of anchoring means which may be embedded in the unset dental stone of a positive dental model.

Abstract: A composition containing thiolate for the removal of heavy metal ions from dilute aqueous solutions, characterized in that the composition is a sorption complex of a thiolate with two or more -SMe- groups (wherein Me represents alkali or ammonium) with a swellable silicate, whose ion exchange capacity is 5-350 milliequivalents/100 g. The composition is suspended in the aqueous medium to be purified and separated off after the absorption of the heavy metal ions from the aqueous solution. The heavy metals can be recovered in known ways.

Abstract: A dental articulator, having a spatially oriented mounting table permanently bonded to the one frame, allows for the positioning of mounting plates on the upper and lower frames of an articulator. The first mounting plate is oriented exactly the same on the same frame of each articulator. The mounting plate table, capable of orienting the second mounting plate within a range of positions, is fixed both vertically and horizontally by means of a special mounting block. Therefore, the mounting plate table being fixed, mounted dental casts on the mounting plates may be transferred from one articulator to the other without introduction of vertical or horizontal errors. As a result the relationship of the upper mounting plate to the hinge axis will be the same for each articulator. Additionally, the vertical and horizontal relationship of the lower mounting plate to the upper mounting plate will be the same.

Abstract: The apparatus includes an endless rope trained over two distally mounted sheaves which define paths spanning either side of said sheaves and means for the continuous application of herbicide to the endless rope. The means for applying herbicide to the rope includes an immersion basin in which portions of the rope are continually pulled through a bath of liquid herbicide. The endless rope is fabricated of synthetic polymeric material, such as nylon, and is made by applying heat to the two free ends until the polymeric material melts and the two free ends are then welded together. Since the endless rope is under some tension, as it traverses the path defined at each end by the sheaves, a second endless rope is tack-welded to the edge of the drive rope at spaced intervals of 1 to 3 inches, again by application of heat to the outer surfaces of the two ropes at the point of contact until the polymeric material is melted to the extent required for welding the two ropes together.

Abstract: A machine is shown for marking the spaces for forming the pleats along the top edge of a wall-hung drapery panel and simultaneously marking a fold point on the rear surface of the hem of the pleated drapery panel. The machine includes a workbench with a pivoted tabletop supporting a pair of adjustable mechanisms. The first adjustable mechanism comprises a series of equally spaced bars supported transversely on elongated slide rods. Each pair of bars is connected together by a threaded sleeve. A manually adjustable drive shaft extends through all of the sleeves for changing the spacing between each connected pair of bars in a uniform manner. The second adjustable mechanism may comprise a lazy tong mechanism that is pivotally connected to the first and last bars and every other bar therebetween so as to vary the distance between every other bar in a uniform manner. A third bar is equidistantly spaced between adjacent bars of the first and second adjustable mechanisms and extends forwardly of said adjacent bars.

Abstract: A nickel catalyst, for the reforming of hydrocarbons, to produce a hydrogen-rich gas, consists of cylindrical or solid prismatic carriers, having exterior lateral walls which are grooved, in which the spacing, depth and width is such that in relation to a non-grooved cylinder or prism of identical composition, height and size, the gas-solid contact surface is increased while the crush strength is maintained.

Abstract: Process for the thermal treatment of powdered and granulated catalysts, catalyst intermediate products, and inorganic substances, which are usable as constituents of catalysts or as auxiliary agents for the production of catalysts. The known process material is placed on a heated vibrating conveyor and there, in the form of a thin layer, in which the particles of the process material are moved with a larger horizontal and a smaller vertical component, heated and allowed to cool either outside the vibrating conveyor or in a separate vibrating conveyor or in the outlet portion of the first vibrating conveyor.

Abstract: A blood sampling unit having a barrel member consisting of a calibrated tubular body which is reduced at one end to form a projecting hollow neck for provision of a hollow needle containing a floating stopper and a slideable plunger. The plunger has an axially disposed gas channel in communication with the barrel and an orifice at its distal end. The unit is designed so that a supply of liquid or dry anticoagulant can be introduced into the portion of the projecting neck extending between the stopper and the needle. Alternately, the heparin or other anticoagulant can be obtained from a vial by drawing the heparin through the hollow needle and into the syringe proper. The plunger acts as a stop so that when its proximal end is set at the proper calibration for the desired sample, arterial blood pressure will move the floating stopper into abutment with the proximal end of the plunger while evacuating residual air through the axially disposed gas channel.

Abstract: The device for sharpening and/or forming the profile of a silk screen printing squeegee consists of clamping means for firmly holding squeegee strips 12 without deformation and of a tool movable along the clamped squeegee strip 12 relative to the latter, which is designed as a heated cutting tool 6, namely as a wire or knife.

Abstract: The apparatus includes an endless nylon rope trained over two distally mounted sheaves which define paths spanning either side of the distally mounted sheaves and means for the continuous application of herbicide to the endless rope. The means for applying herbicide to the rope includes an immersion basin in which portions of the rope are continually pulled through a shallow level of herbicide. This is accomplished by training the endless rope onto a drive drum having at least one revolution of rope wherein the bottom of the drum is at a level below the level of the herbicide and an idler drum driven by the driven rope which again has at least one revolution or loop of wetted rope around it and which is submerged in the herbicide within the immersion basin.

Abstract: The invention relates to an axial impact tool for driving nails or staples into normally inaccessible places. The tool consists of a guide tube and impact rod slidable inside of said guide tube and containing a heavy handle extending outside of one end of said tube and a magnetic fitting which fits onto the guide rod for grasping and driving a ferromagnetic fastening means such as a nail or staple into position. Additionally, the invention contemplates the use of spacer elements which fit between the guide rod and the handle so as to prevent the guide rod from making a full stroke leaving a portion of the nail or staple exposed. This is for purposes such as hanging pictures, or for temporarily placing a board or panel into position so that it can be easily removed later.

Abstract: An electronic depth finder apparatus is shown for use in fishing and/or navigation, and it includes a combined impulse control means and read-out, as well as a remote cooperating transducer immersed in the water. The invention relates to a means of adjustably mounting the transducer on a boat so that the transducer may be capable of as many as three planes of movement; namely, swinging movement in a vertical plane, unlimited rotational movement in a horizontal plane about a vertical axis, and up and down vertical movement between a lower "searching" position and an upper "running" position. The upper "running" position allows operation of the apparatus when the boat is moving at high speeds.

Abstract: A filter medium for use in a vacuum cleaner is shown with external brush means which is movable across the filter face for cleaning the soil therefrom. The brush means may either be moved manually, by automatic controls, by time switches, by pressure differentials operating in a piston-cylinder arrangement, or by a pressure indicator unit which monitors the clogging condition of the filter. Moreover, control means are provided for protecting the vacuum cleaner drive motor from damage from liquids when liquids may be drawn into the vacuum cleaner.

Abstract: A ventilation system for removing fumes in the space above a cooking surface includes a hood located above the cooking surface which forms an entrainment chamber between the hood and the cooking surface, an air intake means having a blower which introduces outside air into the entrainment chamber and exhaust means in operative relation with the hood and including a filter member through which the air and the cooking fumes are passed to filter out the grease and to exhaust the filtered air and gasses into the atmosphere. The improvement is in the provision of an intake blower and an exhaust blower and additionally, an air spreading and diffusion means for forming an air pattern in the entrainment chamber corresponding to the planar area of the cooking surface. The diffused inlet gasses thus mix with the heated fumes and gasses from the cooking surface and therefore eliminates the need to pretemper the air entering the entrainment chamber.

Abstract: This invention involves a portable darkroom comprising a box having a light trap on one open side at the front in combination with a non-reflective surface on adjacent wall and floor portions to prevent reflected light from entering the opening of the light trap on the open side of the box. The interior of the box is coated with a nonreflective surface so as to exclude reflections of light within the box.

Abstract: A rake is described which allows for adjustment between an ordinary lateral displacement working position and a medial delivery of materials. This is accomplished by providing a means whereby the main beam supporting the sets of raking wheels at each end is made into a two-piece beam which can be coupled into its standard rigid position or which can be pivoted forwardly relative to its direction of travel to change the angular disposition of the raking wheels relative to each other and thus change the delivery of materials from lateral to medial.