A Framing Rafter Square Attachment. The attachment cooperates with a conventional rafter or framing square to make the repetitive cutting of lengths of framing lumber (such as for blocking) much easier and faster to accomplish. The attachment allows the position of the framing square as held by the attachment to be adjustable so that it can accommodate a wide variety of circular saw fence configuration. The attachment is extendable and retractable so that the attachment has both a compact size f...

It is necessary to support components while machining is performed. In such circumstances work supports are now provided, whilst previously there was a dedicated arrangement for each component to be supported. By achieving a modularity in terms of adjustment through creating mountings comprising rings, arcs or bars secured upon posts a rigidity of presentation of support ends is achieved. By providing spacers for location about the posts on the mountings variability with regard to the positionin...

A chain-type bit-storing apparatus is provided for a CNC machine tool. The chain-type bit-storing apparatus includes a chain engaged with sprockets rotationally provided thereon. The chain includes links each includes a frame, a rotator rotationally connected to the frame, a pin for pivotally connecting the frame thereof to the rotator of another link and a socket connected to the frame and used to receive a bit. There is a pivoting unit for pivoting a selected one of the bits by pivoting a rela...

The present invention concerns an apparatus for receiving and feeding into a chipper wood to be chipped, said apparatus containing a feed conveyor receiving log bundles, a tumbling drum breaking the bundles, and a receiving conveyor. The feed conveyor is speed-controlled according to the position information of a log bundle, and the speed of rotation of the tumbling drum is adjusted depending on the amount of wood discharged from the drum. The position information of the log bundle is received f...

A tool changer for a machine tool includes a disc magazine having a plate, and a number of retainers attached to the outer peripheral portion of the plate for detachably supporting tool members, the retainers each include a base portion attached to the outer peripheral portion of the plate, and a holding device disposed on the base portion and having two arms for resiliently holding and carrying and supporting the tool member. The retainers each include a coupling portion coupled between two leg...

A machine tool is provided with a bit-changing apparatus including a cam, a rocker, a roller, a linkage, a pulling element, a disc and clips. The cam is attached to the machine tool. The roller is attached to the rocker and movable against the cam. The linkage includes at least one track attached to the machine tool, a sliding element attached to another end of the rocker and movable on the track, and a connecting rod formed with an end pivotally connected to the machine tool and another end piv...

A positioning device for a hand-held setting tool (10) includes an actuating switching device having an actuation element (24), a switching link (30) for connecting an actuation element (24) to the actuation switch (13) of the setting tool (10) and having a switching member axially displaceable relative to a stationary, with respect to the holder, structural component. The device further includes a safety device (50) for preventing actuation of the actuation switch (13) at a predetermined orient...

The invention relates to a construction apparatus comprising a mast, a slide guided in a longitudinally displaceable manner on a front side of the mast, at least one drive chain for the slide arranged longitudinally to the mast and at least one drive pinion supported on the slide in a rotatable and drivable manner, which is engaged with the drive chain. Provision is made for the drive chain and the drive pinion to be arranged in front of the front side of the mast.

A guard for a power-feed drill having a fluid inducer protects an operator from coming in contact with a rotating drive assembly. The drive assembly is enclosed by a cylindrical housing having a slotted opening through which a fluid inducer connection extends. The guard comprises a rotatable tube concentrically disposed within the housing and sleeved over the drive assembly so as to cover the opening presented by the slot. The fluid inducer connection passes through a helical groove in the tube.

A machine tool is provided with a bit-changing apparatus including a cam, a rocker, a roller, a linkage, a pulling element, a disc and clips. The cam is attached to the machine tool. The roller is attached to the rocker and movable against the cam. The linkage includes two connecting rods each formed with an end pivotally connected to the machine tool and another end pivotally connected to the rocker. The pulling element is provided between the rocker and the machine tool so that the roller is k...