Abstract: A cover assembly installable on the open bed of trucks adapted to be mechanically drawn over or withdrawn from the top of the truck bed by means of a pulley operated looped cable attached to a movable tarpaulin. Lateral, front and rear enclosure members are connected with said tarpaulin so that in the drawn position, the interior of the truck bed is completely covered.

Abstract: The invention relates to a flushing block for introducing gaseous and/or solid reagents and additives into a metallurgical melting vessel, which is connectable at one end to a gas pipe and at least to a drive means and at its other end has at least one outlet opening extending from its circumferential surface, said opening terminating in at least one gas channel which can be connected to the gas pipe.

Abstract: A pattern material for making foundry patterns for use in investment casting process, comprising urea, polyvinyl alcohol and a substance, said substance being capable of forming an eutectic mixture with polyvinyl alcohol to reduce the melting temperature of urea.

Abstract: An offset ratchet wrench for loosening and tightening nuts connecting copper tubing to faucet connections comprises a wrench body portion having a circular hole extending through it, the wrench body portion having a passageway or gap portion between the circular hole and an outer front side portion of the wrench body portion, the wrench body portion having a recess in its top surface next to and in partial contact with the circular hole, a pawl mechanism mounted on the body portion inside the recess, a nut driver having a hole extending through the nut driver from its top to its bottom, the nut driver having an upper portion and lower portion, the hole through the nut driver in the nut driver upper portion having a hexagonal-shaped periphery for engaging the nut, the lower portion of the nut driver having a substantially circular outer periphery and having a row of teeth encircling its outer periphery that are engaged by the pawl when the lower portion of the nut driver rests inside the circular hole of the w

Abstract: A leakage control mechanism for aggregate (10) containing liquid and/or with liquid running through them has a receptacle (28) for liquid escaping from the aggregate (10), mounted elastically in vertical direction and equipped with a device (46, 66) for detecting the vertical position of the receptacle (28) and triggering a signal when a pre-set position of lowering is reached by the receptacle (28).

Abstract: In order to avoid a pushing-together or pulling apart of an imbricated stack of sheets during reversal around the reversing roller (3) of a rotary sheet feeder (1), belt-like flexible guide means (18) are used which are disposed at intervals over the axial length of the reversing drum (3), one end of the feeder frame side forming an intake gusset while the other end of each is articulated through a spring (19) on a rod (20) which connects the side walls of the feeder frame (7). The flexible guide means (18) pass between the reversing element (13) and the intake side roller (8) of the second belt conveyor (6) which forms the withdrawal table, the reversing element (13) like the other rollers of the second belt conveyor being mounted on a pivotable frame (11) which is articulated in turn on the feeder frame (7) and is initially tensioned in the direction of the reversing drum (3).

Abstract: A foldable and sterilizable organizer for use in the operating room or at patient bedside is formed from cardboard and includes means to prevent recollapse. Side, end and transverse walls are pulled into position by a strap which then locks the walls into an upright position. Divider walls are provided to subdivide the compartments, and one compartment may include a closed top.

Abstract: The present invention is an audio frequency power amplifier input circuit having improved vacuum tube circuit topology. The improved circuit includes a direct current feedback circuit within the input circuitry which stabilizes the operating point of a phase inverter. The feedback circuit maintains optimum operation of the circuit despite variations in tube characteristics or supply voltages. Another aspect of the improved circuit comprises a low impedance phase inverter which improves the drive capability of the phase inverter to push-pull power output vacuum-tube grids.

Abstract: A cordless electronic weighing scale which includes a load receiving element, such as a weighing pan, an electronic circuit including a battery, a load cell operatively attached to the load receiving element for weighing items and generating analog signals representative of items being weighed, an analog-to-digital converter connected with the load cell for receiving analog signals therefrom and converting them into digital signals, a first logic circuit connected between the load cell and the converter to cause analog signals to be transmitted to the converter in an on and off fashion, and a digital display circuit connected to the analog-to-digital converter to provide a digital display of analog signals from the analog-to-digital converter to indicate the weight of the items on the load receiving element. In the system a pulse plus a non-pulse constitutes a cycle and the pulse is about 1% of the cycle and the non-pulse is about 99% of the cycle.

Abstract: In a mixing process and a mixing means a relative motion of a mixing vessel with respect to a mixing tool is provided such that adhering mixing products are removed from the bottom and the walls of the mixing vessel.

Abstract: A pump apparatus for supplying water and air via suitable respective feeding apparatus to a swimming pool or similar facility, with an electric motor for driving the pump apparatus comprising channel sections surrounding, at least partially, the electric motor by forming an annular gap, the air being feedable through the channel sections to a collecting chamber which is connected to a supply member for delivering air to said water feeding apparatus and/or to said swimming pool.

Abstract: A cervical traction device for use with a stretcher, especially with the type of stretcher that is used for transporting trauma patients with spinal cord injuries by helicopter, for providing traction to an injured person having a fractured neck comprises a frame, attachment members for attaching the frame to the stretcher, a traction device mounted on the frame for applying traction to the cervical spine of the injured person and for adjusting said traction, and vertical adjustment apparatus for adjustably securing the traction device at a desired position on the frame to allow height adjustment of the traction device to obtain proper traction alignment with the injured person lying on the stretcher.

Abstract: An electromechanical abutment stop intended particularly for folding machines comprises of a coil (4) and a magnet (2) which are resiliently movable relative to each other. Disposed between coil (4) and magnet (2) is a damper plate (9) of softly resilient material as defined. The abutment sensor is characterized by low overall height. In a preferred embodiment, at least one surface of the damper plate (9) is occupied by projections (10), the shape of which can be used to determine the signal:mechanical pulse characteristic within wide limits, particularly so that the rise in the magnitude of signal will become ever smaller as the mechanical pulse becomes greater. By limiting the free length of travel .DELTA.x coil 4 or magnet 2), it is possible to confine the signal within an upper limit or threshold.

Abstract: The invention relates to a tunnel kiln for fine ceramic products comprizing a heating section, a firing section, and a cooling section, where by means of gas conveying means (10) gases are taken in from the region of said cooling section (140, 176, 182) and are conveyed to said firing section (41, 78, 80, 126, 128), whereby at least one additional burner (132) is arranged in a transition region (130) between said firing section (128) and said cooling section (140).

Abstract: A process and an apparatus for mechanically removing a sulphur containing layer from lumped lime, wherein the lumped lime is accelerated from a bottom member by a mechanical impulse and projected from the bottom member against a processing surface having profiles provided over partial sections thereof to remove the sulphur containing layer, when the lumped lime returns to the bottom member and the process is repeated along a conveying path for the lumped lime for a determined length of time, or for as long as it takes to achieve the desired removal of the sulphur containing layer.

Abstract: A cover assembly installable on the open bed of trucks adapted to be mechanically drawn over or withdrawn from the top of the truck bed by means of a pulley operated looped cable attached to a movable tarpaulin. Lateral, front and rear enclosure members are connected with said tarpaulin so that in the drawn position, the interior of the truck bed is completely covered.

Abstract: A container for handling and storing large quantities of bulk material such as food products, comprises a unitary molded plastic liquid-tight single wall tank or tub having a bottom and four upwardly extending walls, corner nesting stops located at each corner at the upper end of the container, a lip along the upper edges of the walls, and gussets at the top of the walls supporting the lip. A lid fits over the container lip and has a skirt that is blended inwardly toward the lip so as not to catch on a lip or lid of an adjacent container.

Abstract: An integral double wall hopper adapted for use in the manufacturing of pharmaceutical tablets comprises an outer shell which forms outer walls, four legs and two runners, and an inner shell which forms inner walls, and has a frustoconical lower portion with a discharge opening molded in the bottom of the frustoconical lower portion. A detachable iris valve is positioned on the discharge opening for opening and closing the discharge opening to dispense the contents of the hopper when desired. The runners allow the tines of a forklift to pick up the hopper from the side without damaging the discharge opening or the detachable iris valve. The hopper includes a cover which has a manway formed therein, a lid for the manway, and a plurality of towers formed on the cover for protecting the manway of a lower stacked hopper and detachable iris of an upper stacked hopper from being damaged by the tines of a forklift when the hoppers are moved.

Abstract: The invention relates to means for heat treating green bodies comprising two mutually parallel kiln channels operated in opposite directions each having at least one heating section, firing section, and cooling section, where an offtake means leads from one kiln channel to a combustion chamber, from which a supply means runs into the one or other kiln channel.