Abstract: A worktable has a table top with a slot for reception of a saw blade of a hand-held circular saw when mounted below the table top. Two rip fences mounted on the table top are separately slidable in parallel adjusting slots for adjusting independently the position of each fence. A hole in the table top adjacent the middle of the saw blade slot accommodates a cutting tool of a portable router when mounted below the table top. A router guard may be pivotally attached to a raised support structure between the rip fences. A riving knife is adjustably mounted in alignment with the saw blade slot. A saw blade guard is pivotally mounted on the riving knife.

Abstract: A surface treatment attachment for a power tool, for example a sanding attachment for a hand-held power drill, has a body which can be secured to the power tool to be rotated thereby and which is arranged to receive a treatment head (e.g. a sanding disc). With a view to enabling a consistently improved performance to be achieved under a variety of conditions, structure is provided for selecting the degree of eccentricity of the treatment head relative to axis of rotation of the body of the attachment. The degree of eccentricity may be continuously adjustable within pre-set limits and, advantageously, the attachment includes an arrangement for accommodating a tilting movement of the treatment head.

Abstract: Exercise apparatus comprises a knuckle joint (3) incorporating connectors (4, 5) from which extend the arms (1, 2) of the apparatus. The knuckle joint (3) comprises two housings each accommodating two resilient masses (55) in arcuate channels (12, 13). Relative angular movement of the arms (1, 2) about the axis of the knuckle joint compresses the masses (55) by means of arcuate wall portions (22, 23) located in the channels. Each connector is releasably coupled by a pin (47) or pawl (96) to a part of one housing and by releasing the coupling the arm extending from the connector can be rotated about the housing axis without compressing the resilient mass.

Abstract: An exercising machine in which a belt is movable by a user against a minimum resistance has a user operated control to enable a user to increase that resistance. The belt passes round a series of rollers one or more of which can be locked against rotation by a system of pawls and ratchets or by resilient bushes. A single operating control may be used to actuate the pawls, the position of the control determining the number of rollers that are locked. For certain kinds of exercising machine, the rollers are locked against rotation in one direction only and are freely movable in the other direction. For other kinds of machine, the rollers are locked against movement in both directions.