Abstract: A mine roof support plate bolt formed from an elongated rod has a head and flange at one end, and a helical channel adjacent the other end, the rod having a threaded section adjacent the channeled section and an expansion anchor engaged on the threaded section. The channeled section of the rod has a length greater than the length of the expansion anchor such that a major portion of the channeled section is exposed regardless of the positioning of the expansion anchor on the threaded section.

Abstract: A fixture for displaying merchandise has telescoping structural members. A vertically extending tubular member adjustably supports an elongated member having a generally horizontal arm for displaying the merchandise and a vertical arm telescopingly received in the vertical tubular member. The telescoping vertical arm has a peripheral surface and a distal end with circumferentially spaced protuberances about the peripheral surface near the distal end for maintaining a spaced relationship between the peripheral surface of the telescoping vertical arm and the vertical tubular member. A collar or hub mounted on the upper end of the vertical tubular member has circumferentially spaced fingers for maintaining the peripheral surface of the telescoping vertical arm and the upper end of the vertical tubular member in spaced relationship.

Abstract: A service access unit for a floor system having elongate trunking for one service feed segregated from other service feed or feeds, has a frame to extend across and beyond such trunking at least to one side. The frame is securable in an aperture in the floor of greater size than an included lesser aperture into the top of the trunking. A subsidiary member fits within the frame and extends into said lesser aperture in affording outlet for the service in the trunking. Outlet for at least one other service whose feed is outside the trunking can be taken from at least one side of the subsidiary member but within the frame.

Abstract: A fluid valve permits small quantities of fluid from a container to be withdrawn with a syringe. The valve has a sleeve mounted on a hollow stem in fluid flow communication with the container. A septum is movably mounted between the bore of the sleeve and the bore of the stem. The septum has a first surface facing into the hollow stem and a second aligned surface facing the atmosphere around the valve. A needle is inserted through the aligned surfaces of the septum to withdraw fluid in the stem bore or in the container and is then withdrawn.

Abstract: A flooring system with services segregation for an existing base or substrate (10) to give a new floor, comprises elongate segregation ducting (20) shown with spaced parallel sides (34) and medial divider(s) (36) extending therealong, the sides (34) and divider(s) (36) being apertured (48, 40) to communicate selectively with trough-like elements (50) bridging over space below for segregation of service passageways to each side of the divider(s) (36); and elongate supports (22), for the new floor are shown extending away from the segregation ducting in spaced parallel relation and definhe segregated further passageways (22A, F1, F2) communicating with the apertures (48) of the sides of the segregation ducting.

Abstract: A display structure is disclosed comprising rectangular panels each having at its upper edge a cross member (7) providing an upwardly open channel (80) which receives a central formation (68) of a retaining member (54) which provides, at its upper end, on opposite sides, respective downwardly open channels (60). In a lowered position of the retaining member, the outer wall (62) of each channel (60) extends on the outer side of the member (7) and can serve to retain the upper edge of a respective display card fitted in the panel. The releasing member can be raised, then tilted, while being held captive on the member (7) by an enlarged lower end part (76, 78) of the central formation which cannot pass between flanges (82) on member (7), to a position to one side of the respective side face of member (7) to allow vertical insertion or removal of the display card or the like.

Abstract: A pre-set fluid actuator for setting the roll gap of a rolling mill having a transducer for detecting actuator movement and an electrohydraulic servovalve for controlling its position, a control system for compensating for the compressibility of the actuator fluid caused by the rolling force in a manner that requires no operation of the servovalve by creating a pre-set anticipating compression compensation signal and reducing the output of this signal by the output of a signal representing the actual fluid compression caused by the actual rolling force.

Abstract: An anti-scouring device for preventing scouring of the bed of a flowing stream at an upstream or downstream location proximate a dam has a plurality of rows of concrete members, positioned in the direction of flow of the stream, on the bed of the stream. The concrete members have a base and at least one downwardly extending penetrating member which secures the member to the bed. The concrete members may have downwardly extending legs and upwardly extending retention posts and be linked together in the rows by a flexible linkage. Or, the concrete members may have downwardly extending intersecting webs to serve in securing the members to the bed. Methods for forming the anti-scouring device on the bed are also provided.

Abstract: An improved method of making a generally rectangular continuous electrode having a width to thickness ratio of at least 4:1 is disclosed comprising the steps of forming sheet metal into a first continuous trough shaped sheath, filling the trough with granular core materials and enclosing the trough. The core materials are restricted within the electrode by intermittently mechanically depressing a portion of at least one electrode wall which defines the width of the electrode, inwardly of the electrode.

Abstract: A method for producing thermoplastic tubular containers having a tubular wall section, open neck, and integral sealed bottom where a thermoplastic disc, is sealed to the inner wall of the tubular wall section, and the disc, while in a moldable state, is formed into a bottom wall by application of either a vacuum to the exterior surface of the disc or a fluid pressure to the interior of the tubular wall section, or both, to mold the disc in a mold cavity to a desired shape. A supporting sleeve surrounds the tubular wall section during application of the fluid pressure. Thermoplastic containers can be formed from a single thermoplastic material or from laminates, such as a laminate material containing an oxygen impermeable layer.

Abstract: A pair of regenerative burners is provided with feed means (25) for feeding a reducing agent into the products of combustion so that this agent can reduce oxides of nitrogen in the heat store to which heat is imparted by the products of combustion. Refractory elements (17,21) comprised by the heat stores may additionally or alternatively have catalytically active surfaces to promote reaction of the lower oxides of nitrogen.

Abstract: The invention relates to a rolling mill of the 4 Hi Mae West type having cylinders for axially shifting the work rolls for a schedule free rolling operation, work roll balance cylinders are mounted in the Mae West blocks and as a result assume a varying off set axially relation with the work roll bearings, a control for the balance cylinders to compensate for the effect the offset conditions would otherwise have on the forces of the balance cylinders to maintain the forces at a predetermined value.

Abstract: A rolling mill for rolling strip in which one of its rolls serves both as a mill roll and as a gauge and/or profile measuring roll. The one roll has an outer sleeve for deflection under the rolling force and an internal stationary member for carrying a number of axially supported sensors for measuring the deflection of the sleeve and the rolling force to which the sleeve is subject, and control means for receiving signals from the sensors to produce a signal representative of the gauge and/or profile of the strip as it is being rolled in the roll bite of the mill.

Abstract: Hardened penetrators (armor penetrating projectiles) of tungsten alloy can be work hardened such that they are hard at the surface, tough in the center to resist bending, and with hardness gradient such that the surface hardness is materially harder than the center or the core thereof.

Abstract: A method of repairing a turbine blade of the type wherein each of an array of blades has a tennon extending into a shroud passing around the outside of the blade, the repair being to the area of the blade in which the tennon is situated and comprises the steps of removing at least a part of the shroud, removing the damaged tennon and a part of the blade on which the tennon is situated, manufacturing a new tennon and blade part and locating that new part to at least one adjacent blade in a proper position while the new tennon and blade part is welded to the remaining part of the blade.

Abstract: A poppet valve in an internal combustion engine is moved in both the opening and closing directions by a follower coupled with the valve and defining an internal cam-track. There extends through an aperture defined by the follower a camshaft having a cam which includes a pair of diammetrically opposite contact portions which run on the cam track and cause the follower to reciprocate.

Abstract: An immersed dam foundation and a dam structure are formed in a body of moving water by forming a plurality of spaced piers having temporary support posts thereon. A current deflector is secured to the upstream support posts and sheet piling walls are driven to form upstream and downstream walls between the piers forming a base therebetween. The base is covered with a tremie seal and the walls cut off so that a prefabricated dam structure can be floated to a location above the tremie seal and lowered onto anchor points on the adjacent piers and secured to the piers and tremie seal. An exposed face of a pier is protected from the currents by barriers that serve as a portion of the next upstream and downstream walls, with gravel covered by precast concrete pads. The access galleries of adjacent prefabricated dam structures are closely aligned and seals provided therebetween.

Abstract: An expandable tap hole plug includes a plug comprising a cylindrical member having a circular nose and an outwardly extending flexible sidewall forming a variable obtuse angle with respect to the nose. The plug is adatepd to be oriented within a tap hole of a metallurgical vessel with the nose directed towards the interior of the vessel. An expander, in the form of a truncated cone, has a base and spokes extending outwardly from the base forming a variable obtuse angle with respect to the base. The expander is inverted relative to the plug and is attached to the plug with the spokes of the expander engaging the sidewall of the plug. The angle between the side section and base of the expander is varied so as to vary the angle of the sidewall of the plug relative to the nose thereof to block the tap hole.