Abstract: A sash window counterbalance arrangement for counterbalancing the weight of a sash window includes a spring support mounting located within a channel in a sash window jamb, a sash shoe slidable in the channel, a spring arrangement which generates a spring force between the mounting and sash shoe to counterbalance the weight of the window, the mounting including at least one mounting peg which projects from the mounting to engage a mounting aperture within one channel wall to locate and secure the mounting within the channel, with the mounting peg being resiliently biased into engagement with the aperture.

Abstract: A sash window counterbalance spring mounting arrangement for fitment into a channel section within a window jamb, includes coiled ribbon springs; a spring support mounting including a single integral component for locating and supporting the springs, a support for the springs to support and locate the springs on the mounting, and formed by pairs of triangular cross section projections extending from the rear surface of the main body of the mounting such that when the springs recoil rapidly outer surfaces of adjacent springs contact each other, and including an end portion of the main body which is curved, wing projections extending from the front surface of the main body, and an inter engagement element on the longitudinal end of the mounting for cooperative engagement with cooperative inter engagement features on a sash shoe; and a locating arrangement for locating the mounting within the channel section.

Abstract: A method of cutting and sealing material including providing a cutting and sealing rule defining a cutting edge and a sealing surface, and providing a cooperating anvil member adjacent to the cutting and sealing rule. A material having at least two layers is provided located between the anvil member and the cutting and sealing rule. The cutting and sealing rule includes a cutting blade edge and a sealing surface extending transversely to a plane of the cutting blade edge. The cutting and sealing rule is brought into engagement with the material to be cut whereby the material is simultaneously cut and sealed along an edge adjacent the cut as a result of compressive force applied to the material at the cut edge.

Abstract: A sash window counterbalance arrangement for counterbalancing the weight of a sash window, includes a sash window jamb with a channel defined within the sash window jamb, the channel having a rear wall and a pair of side walls, a sash window shoe slidable in the channel, a spring arrangement connected at one end to the sash window shoe, and a spring support mounting fitted within the channel to support the spring arrangement, the spring support mounting including a locating peg projecting from the spring support mounting to engage a locating aperture defined within one of the channel walls and locate the spring support mounting along the channel, and a self tapping screw fastener engaging the spring support mounting and one of the channel walls to secure the spring support mounting to and within the channel.

Abstract: A sash window counterbalance arrangement for counterbalancing the weight of a sash window includes a spring support mounting locating within a channel in a sash window jamb, a sash shoe slidable in the channel, a spring arrangement which generates a spring force between the mounting and sash shoe to counterbalance the weight of the window, the mounting including at least one mounting peg which projects from the mounting to engage a mounting aperture within one channel wall to locate and secure the mounting, with the mounting secured and located against slidable movement in a first direction due to the spring force, while movement of the mounting in an opposite direction causes disengagement of the mounting peg from the aperture and the mounting peg includes a lip flange which hooks over a portion of the channel wall adjacent the aperture to secure the mounting within the channel.

Abstract: An apparatus adapted for inspecting and measuring the wall thickness of a length of pipe. The apparatus includes a carriage adapted to be movably mounted along the length of pipe, a source emitting a beam of penetrating energy and a detector array having a plurality of detectors arranged in an elongated array. The array receives and measures the intensity of the energy beam. The detector array is mounted on the carriage in a spaced apart relationship with the source so as to allow the diameter of the pipe to pass between them. The detector array is oriented so that its length is positioned generally perpendicular to the intended path of travel. A method is also provided for inspecting and measuring the wall thickness of the pipe. The method includes the steps of providing a length of pipe and an apparatus that includes a source of penetrating energy and a elongated detector array mounted on a carriage.

Abstract: A tangential computer tomography scanner for scanning an object having a cross-section. A radiation source emits a beam of penetrating energy. The beam penetrates an object located within the beam and is received by an array of detectors located opposite the source. A drive device moves the beam relative to said object. The array and the source are arranged so that the beam is maintained perpendicular to the cross-section of the object. The tangential computer tomography scanner generates a full volume data set in a single pass.