Abstract: A drilling or milling machine has a suction chamber surrounding an axially moveable tool, the chamber being axially moveable relative to the tool and spring biased for abutment against a working surface during machining, after the tool has been fed forwardly in a rapid first phase, then slowly just prior to and during machining. The chamber is composed of two half-shells secured onto a mount on the tool body by a locking ring, and which can be separated by removal of the ring and radial outward movement to provide access to the tool without a need to raise the tool body. The abutment-surface of the chamber may be rigid for laterally-stationary tools, or formed of a ring of flexible bristles for laterally moving tools, e.g. for routing printed circuits. Several compressed-fluid delivery nozzles can be provided in the suction chamber to improve the removal of dust and chippings.

Abstract: A nuclear accident carrier for conveying an injured contaminated person comprising a portable base into which a stretcher supporting the person can be inserted, and a lid for isolating the person in the base from the outside. The lid is made from a transparent material and is provided along an edge with a sealing strip that, when the carrier is closed, is clamped between the edges of the lid and the base.

Abstract: A drilling or milling machine on which workpieces of thin metal plate can be accurately located for machining. The machine has a workplate to which is secured a table formed with openings in regular matrix array occupied by plates at least some of which are apertured. A workpiece is located on a rectangular workpiece support plate and clamped thereto. This workpiece support plate is formed with two bores each housing a spring loaded pin and each adjacent to an opposite corner of the workpiece support plate. The pins fit into the respective bores and into adjacent plate apertures of the matrix and are engaged by slotted plates which when moved in one sense pull the pins down against the spring loading to clamp the workpiece support plate and table together and when moved in the opposite sense allow the pins to release by the spring action so that the workpiece support plate can be removed.