Abstract: A method of cracking bearing assembles including the steps of (a) forming a ductile metal (steel, aluminum or titanium) connecting rod in one piece (e.g., by hot forging) having an annular wall defining a crankshaft opening with preformed surface crevices for guiding the initiation of a cracking plane that extends across the crank opening; (b) charging (i.e., for about 40 seconds) the region of such wall along at least one portion of the cracking plane with hydrogen by means of an electrolytic cell or by means of reacting the metal rod with a strong acid (e.g., concentrated sulfuric) to cause hydrogen to dissolve in the metal to facilitate hydrogen stress cracking thereat, with or without the imposition of static mechanical tensile loading at such crevices (i.e., for about 40 seconds) of a magnitude insufficient to cause yielding of the metal; and (c) prolonging, increasing, or imposing the static mechanical loading (i.e.

Abstract: A razor having a razor blade unit with a razor blade fixedly disposed in a plastic housing, and also having a handle, on the front end of which the razor blade unit is pivotably mounted via a forked holder that can be opened and closed. The razor blade unit, starting from a spring-loaded neutral position, is pivotable about a pivot axis that extends parallel to the cutting edge of the razor blade. To provide a pivot head razor where the razor blade unit can execute only slight pivot movements relative to the handle during the shaving process, the pivot axis of the forked holder extends in the region of the cutting edge of the razor blade.

Abstract: A knife constructed substantially of plastic and having interchangeable blades removably installed thereon and further having a butt cap disposed on the handle having annular grooves therein for interlockingly engaging O-rings for use in other equipment.

Abstract: A curved knife for manually peeling produce and especially for simultaneously peeling the sides and bottom of produce halves, such as avocados and melons, while keeping the flesh in one intact piece as the device is rotated around the interior wall of the skin; and to facilitate quick and easy peeling thereof, by employing a wide, thin, curved blade member, with a non-snag cutting edge; said blade member being integrally connected to one end of an elongated handle.

Abstract: An apparatus including a cylindrical housing mounting an upper cylindrical housing slidably thereto to vary a spacing between an entrance of the upper cylindrical housing to a series of cutting blades. The cutting blades are mounted to a rotating shaft of an electric motor, with an exhaust conduit positioned between the electric motor and the cutting blades for directing cut hair and debris exteriorly of the housing, with the conduit associated with a source of vacuum, and wherein the conduit includes sliding doors for varying the degree of vacuum directed to the conduit. Alternative configurations include a self-enclosed housing with the vacuum source defined by impeller blades mounted within a lowermost portion of the housing underlying a porous bag with the housing separable to gain access to the porous bag utilizing either a direct drive for the impeller blades, or alternatively a gear drive to circumvent the porous bag.

Abstract: A precision hair-clipping guide for cutting the hair of a subject to a uniform length at a selectable spacing from the subject's scalp. The guide attaches to the end of a vacuum cleaner hose and defines a flow-chamber having a slot through which the blades of clipping scissors may be manipulated while the hair is being drawn into the housing by vacuum.

Abstract: A sprocket nose guide bar for guiding an endless saw chain. A configured sprocket is rotatably mounted in the nose of the bar and functions to elevate and transport the saw chain around the nose end. The teeth of the sprocket engage the drive links of the chain to lift the chain off the nose edge as the chain traverses the nose. The tooth tips project above the side link bearing surfaces and into configured notches whereby the teeth effectively provide the lifting action without entering the saw chain chassis.

Abstract: A tool holder for facilitating the carving of carpet fibers for producing a decorative, sculpted surface includes a rigid, polygonal-shaped base plate having a central opening formed therein through which the cutting head of a carpet carver may pass. The plate includes a plurality of handles disposed about its perimeter and mounted on the upper surface thereof is a support member to which a tool clamp can be attached at any one of a plurality of different height elevations thus providing for a depth-of-cut adjustment. The tool clamping fixture includes a central opening the size of which can be adjusted to loosely or tightly grip a carpet carver. The clamping fixture is pivotally secured to the support permitting further adjustment of the depth of cut as well as the angle of intersection of the cutting head with the carpet surface.

Abstract: A hedge trimmer whose cutting section is curbed into an arc of a circle for purpose of cutting round shapes.

Abstract: A manually-actuated drawing toy including a pair of beams linked for alternate, reciprocal motion, each beam of the beams having at least one holder for a writing implement. A rectangular tray is provided to hold a piece of drawing paper under and in contact with the writing implements. A mechanism is provided to rotate the paper tray eccentrically as the beams are alternately reciprocated. The paper tray may be rotated and held in different positions relative to the path of movement of the beams.

Abstract: An astronomical correlator for determining the position of the stars and method of using the same includes a transparent hollow globe having phosphorescent indicia. A horizon ring member and a latitude scale member can be utilized for defining the field of view of the night sky in correlation with the date and time. A flash light assembly can activate phosphorescent material, both on the transparent globe and on an alignment assembly, that permits a sighting by the observer of the night sky through the globe for determining the identification of stars.

Abstract: An improved combination of prism assembly and sighting target in a novel structure in which the sighting target provides a dual function by acting as the structural support for the prism assembly in addition to its usual function of providing a readily observable target from long distances. More specifically, the present invention provides, in a preferred embodiment, a diamond shaped sighting target, the center of which is provided with an aperture for receiving the prism assembly housing which extends therethrough in a direction normal to the plane of the sighting target. The prism housing is secured to the sighting target by means of a bracket into which the prism assembly is threaded, the bracket being secured to the sighting target.

Abstract: A surveyor's marker includes an elongated body portion tapered in an axial direction from a head portion to a generally pointed tip. The head portion has a cruxiform configuration enabling it to be used in a cross-hair's sense and seen at a substantial distance. The device is integrally molded such as by injection molding from a brightly colored and relatively stiff and inexpensive plastic.

Abstract: A tool for abutment against an object to detect when the object is at a predetermined orientation is temporarily securable to the object in order to free both of the operator's hands for other activities. Plural spirit level vials, oriented to face in different directions, indicate when the tool is vertical, horizontal or inclined at one or more predetermined angles. In the preferred form, the tool body has a central handle region from which arms extend in opposite directions and a pair of members extend laterally from the end of each arm to define segments of a right angled slot into which the object is fitted. The tool preferably has three different types of fastener including retractable nail-like pins which may be penetrated into wood or the like, elastic cords which may be used to clasp the object and magnets which cause the tool to cling to steel posts, pipes or the like.

Abstract: A masons scale for use in laying courses of brick, adapted to allow a mason to calculate appropriate mortar thicknesses between rows of bricks when constructing a brick wall, so as to evenly space the rows of bricks in such wall. Such scale consists of a plurality of groups of mutually adjacent, individually colored bands arranged along a substantially elongate, flat surface, each group spaced a progressively decreasing distance apart from the next group progressing from bottom to top of the scale, the midpoint of each colored band spaced a uniform distance from the midpoint of a correspondingly colored band in an adjacent group of colored bands. A masonry guide incorporating such scale is also provided, further comprising an elongate post member, and bracket means affixed at each end of the post member, to allow the masonry guide and the associated scale to be affixed to the side of a structure in a vertically upright position.

Abstract: The blade root grooves in a turbine disc are gauged for accuracy by a body resembling the blade root which includes electronic distance gauges in its surfaces. The body is introduced into a reference groove with two surfaces in contact with the groove surfaces and the distance between the other surfaces of the body and the corresponding surfaces of the reference groove displayed. The display is adjusted so that all the distances displayed are equal. The body may then be introduced into a disc groove during production and will indicate whether the disc groove being machined corresponds to the reference groove.

Abstract: A device for measuring the centering, parallelism, and perpendicularity of the side walls of a keyway to the centerline of the keyway in a shaft is described. The preferred embodiment of the device includes a micrometer slidingly attached to the device, a horizontal indicator dial slidingly attached to the device and connected to a horizontally extending probe which is positionable in a shaft keyway, a vertical indicator dial slidingly attached to the device and connected to a vertically extending probe positionable in a shaft keyway, and two stationary legs extending downward from the device for seating in a shaft keyway. In operation, the horizontal indicator dial and horizontal probe are utilized to check the centering and parallelism to the centerline of the keyway and the vertical indicator dial and vertical probe are utilized to check the perpendicularity of the keyway side walls to the centerline of the keyway.

Abstract: Apparatus is disclosed for grading and measuring surfaces such as roadbeds which have curved and inclined profiles which may have different shapes in successive transverse sections of the roadbed. A blade and screw cutter are supported by a frame which extends over the surface being worked, and these tools are movable along this frame. The tools are movable toward and away from the surface being shaped in response to a control means which has memorized the appropriate positions, or by reference to a deformable rule which may also be reshaped in response to computer-memorized data. According to a disclosed method, the rule is reshaped for different sections of the surface.An apparatus for checking and measuring a surface which has a curved profile includes a plurality of piston-cylinder units which are mounted on a main frame.

Abstract: A tool for adjusting the alignment in a wheeled vehicle steering structure using a bushing includes a plate having indicia disposed around an aperture that runs through the plate wherein the indicia indicate an angular position for rotatably adjusting the bushing and including a mechaism for securing the plate to the steering structure in a selectable and fixed position and for retaining the bushing in a position during alignment.

Abstract: A wheeled measuring device having selectively usable and positionable hub elements for use with a plurality of different measuring wheels and corresponding gearing for utilization of a counter to provide different readouts in effecting desired measurements. The hub elements are received in a recess in the housing of the measuring device and retained therein as a result of securing together of separate portions of the housing of the measuring device in the manufacture thereof.

Abstract: A sand layer is fluidized by a gas stream or current in a fluidized bed dryer and indirectly heated by immersed stationary heat-exchanger tubes. The sludge to be dried is continuously fed under pressure in a pumpable conditon from above onto the fluidized sand layer. The sludge is coagulated in the fluidized sand layer to form sludge lumps. Here, the sludge lumps are successively dried from the surface down to the core thereof, and the already dried layers of the sludge lumps are successively abraded by the fluidized sand, whereby the sludge lumps are entirely comminuted and the dry matter thereof is pulverized to form dust. This product dust is continuously discharged together with the exhaust-gas stream from the fluidized bed dryer and continuously separated as a product from the exhaust-gas stream. The gas stream or current freed from dust is partially recycled in a closed circuit back to the fluidized bed dryer for fluidization of the sand layer.

Abstract: A container (12) which is arranged at least approximately rotational symmetrical with respect to an at least approximately vertical container axis (A) has an interior which is made up of an inlet chamber (30) adapted to be traversed from the bottom to the top by a gas, in particular dry air, and a vortex chamber (32) which is arranged above the inlet chamber (30) and formed for fluidizing the material (10). Between the inlet chamber (30) and vortex chamber (32) a ring of guide plates (34) is arranged which, seen in the direction of the container axis (A), overlap each other and impart a twist to the upwardly directed gas flow. Between the guide plates (34) lances (40) are arranged at least approximately radially to the container axis (A) and each comprise at least one nozzle (42) arranged in the flow direction of the gas for introducing granulation substances into the vortex chamber (32).

Abstract: A transfer apparatus is disclosed for transferring a tail of a web from a press roll to a dryer of a dryer section. The apparatus includes a lead-in roll which is disposed adjacent to and spaced relative to the press roll for leading the tail of the web from the press roll towards the dryer. A dryer felt extends around the lead-in roll and from the lead-in roll to the dryer such that the tail is supported by the felt from the lead-in roll to the dryer. The felt and the dryer define therebetween a positive air pressure in-going nip.

Abstract: Bulk material containing vaporizable ingredients, such as lignite, hard coal, peat, waste wood, clarifier sludge, waste sludge, contaminated earth, catalysts, zeolites and filter cake, is conditioned by means of a vibrating plate conveyor divided into a heating section and a drying section, using an indirect heat exchange method. The bulk material is heated in an enclosed heating section while withdrawing the vapor from this section. In the downstream enclosed drying section, the vaporizable fractions contained in the bulk material are further reduced with the aid of heat supplied indirectly, the vapor being withdrawn. The bulk material is separated several times into coarse and fine fractions utilizing at least one slotted grid, the fines being immediately recycled and remixed with the coarse fractions which have a higher water content. The bulk material is mixed several times while being heated in the drying section before discharge.

Abstract: An outsole of flexible plastic material for sports shoes with a recess (4) beneath the heel support surface (A) for accommodating a plurality of individual bodies (5) comprising a resilient material, which fill the recess and which in the non-loaded condition bear against each other only in a region-wise or point-wise manner, forming spaces therebetween. The individual bodies (5) may be in the form of balls and may be joined together by a matrix of small connecting limb portions, to provide for better handling.

Abstract: The introduction of electrical pulses and sonic waves into the water habitat of fish is accomplished by suspending electrodes of different electrode potential attached to the fishing lure. The electrodes are configured to flutter when drawn through the water and the fluttering causing the electrodes to make momentary contact. The electrodes of different potential and the water as electrolyte constitute a voltaic cell which discharges an electrical current pulse when the electrodes make contact. The impact of the colliding electrodes simultaneously generates an acoustical wave into the water, it has been long known that electrical pulses and sonic waves attract fish.

Abstract: An integral molded plastic panel (20) includes a substantially vertical, forwardly facing mounting surface (22). The surface (22) is dimensioned to receive a plurality of license plates (16) and extends downwardly at least substantially to the bottom of the bumper (4) of a vehicle (2). The bumper (4) has a contoured downwardly and rearwardly sloping outer surface. Opposite sidewalls (34) extend substantially rearwardly from opposite side edge portions of the mounting surface (22) and terminate in rear edges (36) shaped to conform to the outer surface of the bumper (4) to facilitate airflow around the panel (20). A bottom wall (46) extends between the sidewalls (34) and rearwardly from the bottom of the mounting surface (22). The top of the panel (20) is attached to the bumper (4) by bolts (12) which attach the bumper (4) to a frame portion (14) of the vehicle (2). The bottom wall (46) carries mounting lugs (48) for attaching the bottom of the panel (20) to the bumper (4).

Abstract: An electronic flower set including a flower set, a housing, an inner seat, a inner cover, a gear assembly, a matching plug, a first pinion, and a second pinion. The flower set has a rotatable stem. The gear assembly includes a third gear which has a circular recess and two matching holes. The third gear is formed with a stopper at a surface. The matching plug is retained in the circular recess and has a tube which is received by the central hole of the third gear and two matching holes. The first pinion has an end tube adaptable to be fixed in one of the matching holes, a sideward extending arm, and a hexagonal-shaped end tube which can be fixed in a hexagonal-shaped cavity of a head of the rotatable stem. The second pinion, which is meshed with the first pinion, includes an end tube fixable in the remaining matching holes of the matching plug, a sideward extending arm, and a round-shaped end tube which is retainable in an retaining cavity of the inner cover.

Abstract: An advertising device for a vending machine which can display the image of serving drinks out of a tea-kettle into a cup or the like. The device includes first and second displays installed inside of a transparent or semitransparent billboard in front of the machine. The first and second displays are controlled to operate in relation to the operation of the machine and display the images of serving drinks out of the tea-kettle and the steaming from the cup respectively.

Abstract: A sheet type large display unit includes a thin, flexible back sheet which is capable of being rolled up, the flexible back sheet having a plurality of electrical connections formed thereon in rows and columns; a plurality of display dot devices mounted on the front surface of the back sheet in a matrix arrangement, each display dot device including four light emitting diodes mounted on a printed circuit board substrate and connected with the electrical connections; a thin, flexible transparent display sheet which is capable of being rolled up, the display sheet being in covering relation to the display dot devices; and an adhesive which secures the peripheral edge of the display sheet in sealing relation to the peripheral edge of the back sheet.

Abstract: The picture changer comprises a housing with a window and a slider member, on the actuation of which a pile of pictures housed in the changer is cyclically rearranged. To simplify construction and give the change-over movement any easy action, the process of separating the individual picture, which takes place under strong spring bias, is restricted to a short partial travel. As the change-over movement continues, the individual sheet is stiffened in the conveying direction so that it holds the remainder of the pile at a distance from the separating gap and itself is held by stop members. The change-over function can be interrupted by displacing the separating gap.

Abstract: A system for exchanging and storing window-display posters (1-6) has two storage areas (11,12) in which the posters are movably stored perpendicularly to their surfaces. Transport of the window-display posters between the storage zones is effected through two planes that border on the storage zones. At least one of the planes is arranged for displaying several posters. A conveyor is provided for carrying the posters into and out of the planes, as well as for guiding the posters within the planes.

Abstract: A light computer is provided for illuminated and animated displays. Light planes are illuminated and images carried thereon are lit when light is applied to any edge. A moving light and opaque coatings on the edges of the light plane are used to vary the sequence and time the frequency and duration of the lighting of the plane. When an opaque coating is positioned between the light and the plane, the plane does not light. Only when the opaque coating is not present and the light is present is the plane lit. In a preferred embodiment, the light source is mounted at the end of a stack of circular light planes and light from the light source is admitted to the edges of the light planes by means of a rotating mask having a window leading to a prism for reflecting the light onto the edges.

Abstract: An illuminated sign is comprised of single piece molded plastic front, intermediate and rear frame members which are substantially coextensive with the width of the sign. All of the characters are formed on the intermediate frame member and they fit into a front frame which serves not only as a support but as a means for masking those parts of the intermediate frame which connect between characters, for example, and which should not be illuminated. The sign is hingedly mounted to a fixed support member which, in turn, supports fluorescent tubes which run along the length of the sign for illuminating the characters to make them visible at night as well as during the daytime. The sign swings down on its hinges to its normal readable position wherein it is secured to the support member by means of quarter-turn fasteners which effectuate a seal for compressing a gasket which is interposed between the sign and the supporting structure.

Abstract: A vehicle 10 is provided with a remote oil fill apparatus 12. The remote oil fill apparatus 12 includes a volume chamber 18 coupled to one side of the raised frame 11 of the vehicle 10. A motor 14 having an oil fill opening 16 formed therein is mounted in an intermediate front portion of the vehicle frame 11. A conduit 34 and hose 36 direct the flow of oil from the volume chamber 18 to the oil fill opening 16. A adapter coupler 48 is provided to couple the conduit 34 and hose 36 to the motor 14 in the oil fill opening 16.

Abstract: The magazine (1) has a mouth (3) for bullet entry in correspondence of an end thereof, and a thrust element (8) elastically urged towards the bullet entry mouth (3). In correspondence of the mouth (3) at least one pawl (10) is provided, which is pushed by a spring (11) to a lock postion, in which it retains the bullets (4) which are urged against it by the thrust element (8), the pawl (10) being movable, against the action of the spring (11), to reach a position of disengagement of the opening of the mouth (3), in which position it allows the bullets (4) to be entered perpendicularly to their axis, in the longitudinal direction of the magazine (1). The pawl (10) has a substantially `V`-shaped configuration, hinged in correspondence of the vertex of the `V`.

Abstract: Actuation of the firing mechanism of a firearm is prevented until grip pattern sensing means on the handgrip of the firearm supply to a microprocessor signals corresponding to a grip pattern stored in a programmed simulated neural network memory. All of these components are contained within the firearm. Programming of the neural network memory is accomplished by using a host computer with a simulated neural network to train that network to recognize a particular grip pattern using grip pattern signals generated by the grip pattern sensing means as the sensing means is repeatedly gripped for the person for whom the firearm is to be programmed.

Abstract: An improved ammunition loading device designed for cartridges having radially extending rims, such as 0.22 calibre cartridges. The invention comprises a body having a spiral groove and a feed arrangement to drive the cartridges through the groove and into a magazine. A manual crank has an eccentric cam which operates two mechanisms alternately on each rotation of the crank. On half the rotation it operates a feed finger which inserts the next cartridge exiting the spiral groove into the magazine, and on the other half of that same rotation it advances the line of cartridges to present a fresh cartridge for insertion on the first half of the next rotation.

Abstract: A heavy canvas type sheet of fabric has multiple rows of VELCRO.RTM. type hook or loop members on a front surface from a top to bottom configuration. A top edge has a strap attached along with a pair of fastening rings. The strap descends along a back surface of the sheet below a bottom edge. Multiple plastic envelopes having hooks or loops closing the envelopes are attached by a corresponding strip containing hooks or loops along the back of each envelope to the hook or loop rows on the fabric. The envelopes can contain fishing lures and can be easily removed to attached to the fisherperson's clothes.

Abstract: This invention relates to the placement of insecticides in such a manner that precludes their contact by larger non target species and in a manner that isolates these insecticides form contact with food and other surfaces that may be contaminated by random application of insecticide products.Specifically, the invention concerns itselft with the construction of a device that allows containment of the insecticide in a manner that will deliver a lethal dose to the target insect.Additionally, the construction of the device entices crawling insects to its interior and thereby insures a more effective usage of a limited amount of insecticide concentrate.And, the invention allows for unique and stable application of premeasured amount of insecticide product in a manner that insures the stability of the insecticide and thereby lengthens the useful killing life of the insecticide product.

Abstract: A container of the kind used for supplying water and/or nutrients directly into the soil adjacent the plant comprises a bottle for holding the supply of water and a cap structure which encloses one end of the bottle. The cap structure is effective to both support the bottle upright on the soil adjacent the plant and to transfer liquid downwardly from the bottle into the soil. The cap structure includes a spike which extends from an outer, flat surface of the cap so that the spike structure can be inserted into the soil until the outer, flat surface of the cap is engaged with the upper surface of the soil. The spike and the flat surface of the cap thus hold the bottle in a stable, upright position. A wick extends through an opening in the cap. The wick has an inner end immersed in the liquid within the bottle and has an outer end which is inserted into the soil.

Abstract: An apparatus for the gripping of plants located in a container is disclosed. This apparatus comprises a pushing element, which pushes the ball of the plant upwardly from underneath, until the ball is released for a substantial part above the container. Then the ball is gripped by a number of gripping arms, movable in a horizontal direction, which transports the ball including the plant to its destination. To be able to push the ball upwards the continer comprises at location of each of the cavities for the balls a guiding channel for the pushing element. This channel has a cross-section of a star-like configuration, the number of points thereof coinciding with the number of points of the pushing element.

Abstract: A revolving door including a plurality of door leaves extending radially outwardly from a center shaft in angularly spaced positions. The door leaves are mounted in a door opening for rotation about said center shaft by upper and lower bearing means. The door also includes upper and lower collapsing mechanisms which are adapted to normally maintain the door leaves in their radial positions, but to permit pivotal movement of each door leaf about the center shaft between its normal radial position and a collapsed position in the event that the door leaf is subjected to abnormal forces. One of the upper and/or lower collapsing mechanisms has associated with it a locking assembly having an electromagnet which normally is operated to prevent the collapsing mechanism from functioning so that the door leaves can be collapsed.

Abstract: A gate opening and closing apparatus for automatically moving a gate between opened and closed positions and where the gate can be unlatched in order to permit manual opening and closing movement and easily re-latched for automatic movement thereof. The apparatus comprises a powered drive unit. The gate is moveable and, preferably rotatable about a vertical hinge axis, between a pair of opposite end positions. A drive arm forms part of the opening and closing apparatus and is driven in an arcuate path between a pair of end positions which represent a gate open position and a gate closed position. A coupling arm is normally engaged with the drive arm and may be moveable therewith between the opposite end positions represented by movement of the drive arm. A latching arm is provided for latching the coupling arm to the drive arm. A connecting mechanism connects the coupling arm to the gate to translate the movement from the drive arm and the coupling arm to the gate.

Abstract: A vehicle window regulator is provided for lifting a window and lowering the window for retraction into a window well in a vehicle door. In the best embodiment the window is supported for lifting and lowering by first, second and third flexible cables, each of which is attached at one end to a take-up mechanism mounted on the window. The first and second cables at the end opposite the take-up mechanism are mounted to an upper portion of the body of the vehicle door, and the third cable at the end opposite the take-up mechanism is mounted to a lower portion of the body of the vehicle door. For lifting the window, the take-up mechanism shortens the first and second cables and simultaneously lengthens the third cable. For lowering the window, the operation is reversed.

Abstract: The disclosure relates to a system for the guiding and sealing of a movable window of an automobile door, especially of a flush window, comprising a profiled section (7) made from a reinforced elastomer, a first part (9) of which is capable of being secured to the window frame, whereas a second part (10) ensures the guiding and sealing of the movable window (4). According to the disclosure, a rectilinear part of the profiled section, adjacent to the center pillar of the body, is equipped with a slide (13), whereas the movable window has, on the lateral part of its outer face adjacent to the center pillar, at least at the upper part of this face, a guide shoe (12) engaged in this slide (13) and capable of sliding in this slide during the entire displacement of the movable window.

Abstract: The weatherstripping includes a backing having pile fibers extending upwardly from the face of the backing. A heavy yarn is secured on each side of the pile longitudinally of the backing on the backing face to force the pile fibers to stand more erect which results in a better seal while reducing side friction when the weatherstripping is inserted in the channel of a door or window.

Abstract: An apparatus for the uniform proportioning of granular blasting agents in pneumatically operating blasting machines is disclosed in which the blasting agent supply is in a closed hopper with a blasting agent feed controlled with regard to the amount of agent fed per unit of time. A screw conveyor screw disposed in a horizontal screw conveyor tube having an entry area adjacent to the discharge area, which is in turn adjacent to a removal duct of the conveyor screw tube has substantially the same cross section diameter value of a blast-air duct. The blast-air duct forms a tee with the screw tube in the discharge area. To compensate for the pressure drop in the device during its operation, a connecting duct is provided between the blast-air duct and the closed hopper. The branching of the connecting duct to the blast-air duct lies upstream from the entrance to the screw conveyor tube.

Abstract: In bearing structures which can be converted from a rest shape to an operational shape of larger volume and have at least one flat bearing part (1) and at least one support part (2) movable with and/or detachable therefrom, the problem consists in achieving good shape retention and in particular high resistance to bending without affecting the geometrical adaptability. The solution is achieved through three features: (a) the flat bearing part (1) is essentially resistant to bending in the first normal plane (NE1) and comparatively flexible in at least a second normal plane (NE2) at an angle to the first normal plane; (b) the bearing part (1) has an at least sectionally-curved functional shape; (c) when the bearing structure is in its operational shape the support part (2) is connected in a push-resistant manner with at least one region of the bearing part (1) which extends at an angle to the first normal plane (NE1).

Abstract: Eaves section system comprising a first section part with a covering strip, a downward-directed covering flange at right angles thereto an upright rib and a second section part which encloses said rib, is coupled to the first section part and is provided with a second covering strip above the first covering strip and with at least one coupling piece to be fitted between the first and second covering strip, and which is on the one hand to be coupled to the first section part, and to which on the other hand the second covering strip is to be locked.