Abstract: An apparatus for transmitting acoustic ultrasonic pulses and for receiving "echos" of the transmitted pulses, comprises a housing, an upstanding wall mounted on the housing defining the mouth of a well, and a transducer mounted in the housing so that the operative part of the transducer is located in the well. The well is substantially watertight and is provided with a jet for introducing water or other fluids to the well, or is pre-filled with fluid.

Abstract: A method of repairing a turbine blade of the type having one or more lacing wire holes comprising the steps of welding additional metal to the blade, subjecting the blade to a stress relieving heat treatment process before which the or each lacing wire hole is effectively eliminated by filling the hole or holes with material the same as or at least compatible with the material from which the blade is made. The turbine blade may be subjected to the application of mechanical forces to restore its form and machining to restore its shape can be gauged to ensure both its form and shape is correct.

Abstract: Discrete volumes, or slugs, of liquid are accelerated to high velocities utilizing energy stored by compressing the liquid. Liquid is forced into a pressure vessel already filled with liquid to effect the compression. A slug of liquid is ejected from the pressure vessel into a cumulation nozzle by the energy stored in the compressed liquid when a valve is rapidly opened. The valve is unseated when an unseating force exceeds a closing bias. The valve is then opened rapidly by an opening force generated by the compressed liquid. By repetitively introducing highly pressurized liquid into the pressure vessel, the valve automatically cycles to generate a series of pulsed liquid jets. Rapid opening of the valve is aided by an extension on the valve member which sealingly slides inside the passage of the cumulation nozzle to block release of liquid until the valve member accelerates sufficiently that the required opening rate is achieved as the extension clears the nozzle passage.

Abstract: Sulfur dioxide is removed from flue gases resulting from combustion of sulfur-containing coal in a coal combustion unit by contacting the gases in the coal combustion unit with hydrated lime containing sugars and then adding an aqueous media, preferably containing an alkali metal compound, to the gases in ductwork leading from the coal combustion unit to an electrostatic precipitator.

Abstract: A method and apparatus for rolling a taper in or out of a strip during reduction by a rolling mill, rolling a first portion of the strip by employment of a gaugemeter roll gap control system using a first value for the mill stretch above the natural mill stretch value for the mill and which value during the rolling of the first portion will be a fixed value, thereafter rolling a second portion of the strip in the same rolling operation by using a value for the mill stretch in the gaugemeter roll gap control system which will vary to effect a change in the roll gap and hence a change in reduction of the strip in which the second value may be a linear function.

Abstract: An internal combustion reciprocating piston engine is provided with a single overhead camshaft which operates six valves associated with a single combustion chamber by desmodromic valve gear. As viewed in a direction along the camshaft, the valves are mutually divergent in the direction from the camshaft towards the combustion chamber and some valve pairs are more divergent than the other valve pairs.

Abstract: A thermoplastic container for the storage of flammable liquids includes a container body, a sealable opening in the container body through which the container can be filled with a flammable liquid, and a flexible corrugated nozzle portion, integrally formed with the container body, for dispensing a flammable liquid therefrom. The container body is defined by a bottom, a sidewall and a top. The nozzle portion is hollow and elongated, has a generally circular cross-section, and is defined by an inlet, and elongated section and an outlet. The elongated section is defined by a sidewall, a first end, a second end opposite the first end, and a passageway therethrough from the first end to the second end, and has at least one flexible, corrugated portion that includes a plurality of corrugations.

Abstract: A connector for securing together first and second members, the first member being elongate and having a generally central longitudinal axis, the second member having a socket, a locking element secured relative to or integral with the first member, the locking element having a first engagement surface and being receivable in the socket, the surface, upon less than one revolution of the first member about the longitudinal axis, relative to the second member, being urged into contact with a second engagement surface of the socket to ensure the first and second members together.

Abstract: A tamper-evident container assembly comprises a container and a cap. The container has a dispensing end that includes an opening through which the contents of the container can be dispensed, a threaded surface, and a frangible tab extending outwardly from the threaded surface. The cap is internally threaded with the threads of the cap being complementary to those of the threaded surface of the dispensing end of the container and being formed prior to the cap being placed on the dispensing end of the container. The cap has a vertical notch therein extending from the lower edge thereof of a size sufficient to receive at least a portion of the tab so that the tab is readily visible therethrough. The cap is initially placed axially over the dispensing end of the container so that the tab is received within the notch in the cap.The cap can not be initially removed from the container without separating at least a portion of the tab from the threaded surface of the dispensing end of the container.

Abstract: A tool holder for holding a replacable tool bit having a body part and a cutting edge, the tool holder having a body provided with first and second clamping members which co-operate, in the use, to clamp the tool bit to the body, the first clamping member having a tool bit engageable portion for engagement with the body part of the bit, a fulcrum portion in engagement with the tool holder body and a load applying portion whereat a load is applied to the first clamping member to cause the member to pivot about the fulcrum and so urge the bit, in use, towards the second clamping member. In one version the tool bit is of polygonal shape in side elevation and has a cutting edge at each corner of the polygon, so that a selected one of the cutting edges may be brought into an operative postiion relative to the tool holder by rotating the bit about the first clamping member so that the selected edge is presented to a work piece for cutting engagement therewith.

Abstract: A two-part closure assembly for a container includes a spout and a measuring cup. The spout has an outer annular ring, a liquid-dispensing component disposed within an upper portion of the annular ring and a passageway therethrough adapted for fluid flow communication with a liquid held in the container. The annular ring has an inner surface which has an annular groove in the upper portion of the ring, an annular recess in the lower portion of the ring, and means in the lower portion to engage a container. The cup has a base, and a sidewall extending upwardly from the base to define a cavity into which a liquid can be poured. An annular flange, extending outwardly from the outer surface of the sidewall of the cup, is alternately releasably engageable within the annular groove in the inner surface of the annular ring of the spout to envelop the liquid-dispensing component of the spout and within the annular recess in the inner surface to be disposed within the liquid-dispensing component.

Abstract: A paper holder, for holding paper for the operator of a key board, for example, consists of an elongate member defining a slot, the slot being non-linear and at least one dimension. A piece of paper may be inserted into the slotted member, the piece of paper being held in a stiff erect position.

Abstract: A part and method for repairing a high velocity fluid flow machine part, for example a turbine blade comprises an insert which may be made from a piece of material the same as the turbine blade and prior to attachment to the blade has an edge region hardened by any suitable means, for example induction hardening, the insert then being secured to the blade by welding or brazing, the weld or braze material being of a relatively soft nature to provide a cushion between the insert and the blade so as to minimize the occurrence of stress corrosion cracking.

Abstract: A board game comprises a board defining an enclosed track of adjacent spaces. A spinner positioned at the center of the board has elements which randomly identify at least one of the spaces by pointing to the spaces. The game further comprises a plurality of playing pieces to be moved from space to space by players, and a pair of dice to indicate the number of spaces the playing pieces can be moved. According to the rules, if a spinner element randomly points to a space occupied by a playing piece, that playing piece may be removed from the board.

Abstract: Also proposed is apparatus for cleaning hard and soft surfaces by simultaneous application thereto of liquid and vacuum using a tool and which is equipped with a conversion device to permit dry vacuum cleaning with entrainment of dry soil in the liquid for subsequent collection in a soil and liquid vessel. The device (FIG. 4) comprises a 2-way valve (7) by which liquid flowing through a first pipe (5) can be caused to flow alternatively to a head (1) of a tool, or, through at least one branch pipe (9) to a second pipe (6) or pipe insert (11) by which suction is applied to the head (1) of the tool to entrain the dry soil flowing therein. The branch pipe or pipes normally terminate in one or more spray nozzles and may be located at various different positions in the path of flow of the dry soil induced by vacuum.

Abstract: A device for releasably mounting a working implement such as an excavating or loading bucket on a working arm, such as an excavating arm of a vehicle comprises a housing which is, in use, secured to the working arm, the housing having a latch which is movable between a free position and a latched position, the latch being engageable with a co-operating receiving part of the working implement and retaining the receiving part of the implement when moved to its latched position, to secure the implement relative to the housing.

Abstract: A slat wall section includes a plurality of front horizontal members spaced from each other in a front plane. The front members having first and second horizontal edges, both of which have a rearwardly extending lip. Rear horizontal members having first and second horizontal borders are disposed in a rear plane, which is substantially parallel to the front plane. Each section includes first and second ends, with one rear member extending to the first end and one front member extending to the second end. Substantially parallel transverse connecting members extend between, and are generally perpendicular to, the front and rear members. At least one connecting member extends from each of the front members to a rear member. The connecting members are spaced from the first and second horizontal edges of the front members. A first connector defines the first end of the section, and includes a flange extending toward the front plane.

Abstract: An efficient and cost competitive fuel extender for mixing with lead-free gasoline used for driving internal combustion engines is provided which makes use of low grade, inexpensive naphtha as its principal ingredient that is upgraded in combination with anhydrous ethanol, toluene, aromatic benzene, xylene and a class of stabilizing and water repellent chemicals, all in a critical range of content. Its synergistic content provides a resultant product that is usable as a compatible additive for lead-free gasoline; it is extremely low in cost, and does not require any engine adjustments or fuel line protection measures; it may be provided with either a so-called regular or "MID" grade octane rating.

Abstract: A toy or plaything in the form of a puzzle comprises a first member, and a second member constituting a housing within which the first member is rotatably mounted. The second member is such that access is provided to the first member to enable manual rotation thereof. A peg is mounted on one of said members and a maze is defined in a surface of the other of the first and second members, the peg engaging the maze such that upon selectively rotating the first member within the second member the peg is caused to move through the maze. There is further provided means to indicate when the peg is at a predetermined destination in the maze.