Abstract: A pre-shaped aluminum plate is held against the flat end wall of an inverted mold cavity by vacuum pressure communicated through bore holes in the wall leading to a vacuum chamber in the mold body. A high temperature PTFE gasket shaped to match the plate fits in an annular recess in the wall to provide a seal between the wall and plate. Polyurethane foam expands and hardens in the mold cavity to further press the plate against the wall and to form a foamed plastic water ski having a flush aluminum deck. The mold cavity has a curved side wall to produce a ski having a radiused edge about the deck.

Abstract: Dust filter apparatus comprises a first, coarse dust removal stage constituted by a plurality of swirl chamber devices into which a liquid is sprayed and a second, fine dust removal stage constituted by a wetted filter panel.

Abstract: Integrated circuits contained in a rail are passed through cylindrical electrodes. Two electrodes are connected to an oscillator to transmit out of phase fields. A receiving electrode's output has the residual oscillator frequency component removed by a nulling network and summation device, whose output is fed to a band pass amplifier and balanced demodulator, which receives a phase shifted input from the oscillator. Demodulator output components at and above the oscillator frequency are removed by a low pass filter. A demodulator output above the reference voltage triggers a counter.

Abstract: This invention provides mine equipment for sensing the advance of mobile equipment, particularly on longwall face conveyors the equipment comprises two mine roof supports provided with sensor means for sensing relative movement between the associated roof supports and an elongate bar component secured to the conveyor and extending between the two supports in a direction rearwardly of the conveyor. The elongate component is magnetized so that a magnetic field is induced adjacent thereto, the induced magnetic field intensity varying longitudinally of the elongate component.

Abstract: A cold header or a screw machine preforms a rod end blank from rod stock. A female blank has a drilled and tapped rod portion and an undersized spherical head portion. A male blank has an unthreaded straight shank and an undersized spherical head portion. The rod portion is necked adjacent the head portion. The blank is placed on an indexing table which advances the blank through a series of processing stations. The head portion is heated for three seconds with an induction coil, rested for one second, and heated again for three seconds with an induction coil. The head portion is then flattened, shaped and enlarged in a closed die press. The head portion is quenched to room temperature. The head portion is punched in a die punch to remove the slug and flash.

Abstract: Dissimilar pairs of identical parallel longitudinal grooves having enlarged U-shape central pockets open outwardly along opposite faces of a support block for pivotally receiving correspondingly dissimilar end fittings of cable conduits. A U-shape retainer detachably connects to the block to hold the end fittings in the grooves. The block is connected to a mounting plate in any one of a plurality of positions. In use, the block is turned to match corresponding grooves and end fittings and is connected to the plate to support the cable in a desired position.

Abstract: In a process for the utilization of the heat content of combustible components in sludges, in particular in clarification sludges, the sludge, which still contains a proportion of water, is burnt in a pressure-tight furnace. The resulting steam and exhaust gases are conducted through heat exchangers and a thin layer evaporator, and the exhaust heat and heat of condensation effect, in one or more stages, a heating and thickening of the sludge to be burnt. Pressure-drop machines can be driven by the excess pressure of the exhaust gases, steam circuits and liquid circuits.

Abstract: In a process and apparatus for the fibers of composite building panels, bars are laid against a rotating drum, parallel to each other and close together. Parallel threads or wires which extend in the direction of the drum periphery are then would around the outside of the bars, in a stressed condition, whereby the bars being transported by the drum are pressed against the peripheral surface thereof. The bars are connected by a hardenable binding agent to fibres and a thin sheet of suitable material which move with the drum, and the binding agent is caused to harden, thereby forming a first strip on the drum. The first strip is then brought into a condition of extending parallel to a second strip produced in the same manner, with an adhesive between the two strips. The two strips are then passed through a pair of rollers which press the assembly together, thereby forming an elongate panel configuration.

Abstract: A fluid flow monitor of the sort which detects of rate of formation of Karman vortices caused by a vortex inducing element in a fluid flow along a passage is provided with at least one formation associated with at least one side of the passage and tending to interfere with fluid flow along the passage, the formation being provided on the downstream side of the vortex inducing element.

Abstract: Cantilever attachment method and apparatus are described. A resilient portion of a cantilever assembly holds a first part of an attachment device. The second part of the attachment device is positioned on a side of a post opposite the cantilever assembly. The attachment to the resilient means is positioned opposite an intermediate portion of a base on the cantilever assembly. The base lies against the post when assembled. The cantilever assembly is first tipped upward and the attachment is joined to the resilient portion. Tipping the cantilever assembly downward compresses the resilient portion. Continued rotation of the cantilever assembly downward slightly raises the cantilever assembly along the post and slightly relaxes the compression of the resilient portion, thereby creating an over-the-center clamp.

Abstract: A head lining mounting structure for anchoring each end of a head lining to a vehicle structural member such as a roof rail includes an anchoring means formed in a multi-stepped manner to taken up irregularities in dimension or elongation of a head lining, thereby preventing slacks or wrinkles of the head lining and facilitating mounting the head lining on the vehicle structural member and therefore avoiding a spoiling of a sense of beauty or fine quality in a vehicle compartment due to mounting conditions of the head lining.

Abstract: The invention is a unibody key with lateral grooves on one side or both sides of the shank of the key. The lateral grooves are of an irregular pattern and are cut at a depth such that the key can be snapped off along the lateral groove. The snapped-off portion ofthe key can be inserted in a lock. By inserting the snapped-off portion in the lock, only a key which will mate with the irregular pattern of the snapped-off portion will give proper alignment for a key to open such lock. By such operation, the key necessary to open the lock is easily, quickly and effectively changed.

Abstract: A mail box indicating device which permits a visual determination from a distance whether the mail box door has been opened. The mail box indicating device consists of a mail box with an upper and lower section separated by the mail box floor. A metallic strip is connected to the mail box floor in the lower section. The indicator means is attached at one end and has a magnet disposed at the other end which contacts the metallic strip until that end of the indicator means is released by opening the door of the mail box.

Abstract: Pesticide compositions are disclosed which contain D-limonene as an insect-killing ingredient along with surfactants or emulsifiers and water. The pesticide compositions are liquids designed for use as a flexible-purpose pesticide concentrate; a dip to rid small animals of fleas and ticks; a spray to kill fleas and ticks on small animals and in the kennels of small animals; a spray to kill flies on small animals and in the kennels of small animals; and a spray or liquid to rid household areas of cockroaches and other insect pests. The composition is non-toxic, non-polluting, biodegradable, non-irritating to animals other than insect pests.

Abstract: The present invention relates to single shot stocks of animal semen to be used for artificial insemination of poultry such as turkeys, hens and guinea fowl, of the kind comprising a tube presenting an opening of relatively small diameter so that the semen introduced therein can be maintained therein by capillarity alone so as to avoid the use of any bung.The object of the invention is to provide a stock of semen of the kind referred to which avoids any risk of waste of material.To this end, the invention provides a stock of the kind comprising a tube made of relatively flexible material presenting an opening for receiving the semen whose diameter is significantly greater than the thickness of the cylindrical wall, one end of the tube terminating in a brim forming by bending the end of the wall within the tube, characterized in that this brim is shaped so that its free edge comes into direct contact with main cylindrical wall of the tube.

Abstract: Brake equipment is provided for a vehicle adapted to travel along a path adjacent to an elongated stationary rail the brake equipment comprising a resiliently applied brake member arranged to abut one side of the stationary rail and a pivotally mounted reaction brake member on the opposite side of the stationary rail to the brake member. The reaction brake member is pivotably clear of the stationary rail along sections of the track, for example, point or crossover arrangements, pivotal movement of the reaction brake member being under the action of an abutment member arranged to abut stationary formations associated with the sections of the track.

Abstract: The proportion of a radioactive material in a moving mass of material is determined with a sensor which derives an output signal proportional to the mass of radioactive material. The output signal is calibrated against known reference values to give a quantitative value of mass. Problems associated with inhomogeneity of material distribution are overcome by averaging the sensed radiation over a time period. Background radiation can be sensed to determine sufficiency of material or it can be shielded from the sensor.

Abstract: Drums have a truncated spherical sidewall section formed integrally with a truncated conical sidewall section. The spherical section is one-half to four-fifths the length of the drum body and it curves about a point located 20% to 40% of the distance between the ends of the drum body. The conical section slopes inward 30.degree. to 40.degree. from vertical. A cylindrical sidewall section extends between the spherical section and the end of the drum. A drum head is stretched across an end of the drum body by tightening bolts which extend through slots in a hoop surrounding the head. The bolts have threaded ends which are received in tapped rods rotatably mounted in the curled ends of sheet elements. The bolts pivot about an axis tangential to the drum body. Radially extending portions of the hoop have bent edges adjacent the bolt heads. The slots are formed in portions of the hoop which project toward the end of the drum.

Abstract: A fastener assembly is disclosed which comprises a clip for mounting a constituent member to a corresponding receiving member. A socket portion is integrally formed on the constituent member, which socket portion has a cylindrical opening with a pair of engaging projections extending from opposing inner peripheral surface portions of the opening toward each other. The clip has a shaft, a support portion formed at a longitudinal central portion of the shaft and adapted to fit in the opening of the socket portion, a pair of spearhead-shaped snap portions formed at opposite ends of the shaft, one of which snap portions is adapted to fit in the opening of the socket portion and engage the projections, and small flexible bosses which retain said one of the snap portions in the opening when this snap portion is disengaged from the projections. A mounting hole is bored on the receiving member so as to receive the other one of the snap portions.