Abstract: A hand-held riveting tool is driven by a battery-powered electric motor, and comprises a hydraulically-actuated riveting head, and a reciprocating hydraulic pump driven by the electric motor. The tool includes a reservoir for hydraulic fluid, the hydraulic supply line from the pump to the riveting head being connected to the reservoir by a reservoir inlet valve which is normally open to allow hydraulic fluid to flow from the supply line into the reservoir. Operation of the tool-actuating trigger firstly closes the reservoir inlet valve, and then switches on the electric motor to operate the pump. Release of the tool-actuating trigger firstly switches off the electric motor to stop operation of the pump, and then opens the reservoir inlet valve. When the reservoir inlet valve is closed by operation of the trigger, it acts as a pressure-relief valve to relieve over-pressure of hydraulic fluid.

Abstract: Riveting apparatus of the type in which an elongated mandrel, having an enlarged head at one end and loaded with a plurality of the tubular rivets forming a column of rivets on the mandrel, is gripped by gripping mechanism at or near the end remote from the head, and reciprocated relative to an abutment (32), by relative reciprocation between the gripping means (43) and the abutment, the rivets in the column being fed forwardly along the mandrel so that the leading rivet nearest the mandrel head is positioned between the mandrel head and the abutment (32) and can then be set by moving the mandrel rearwardly relative to the abutment (32) so as to draw the head of the mandrel through the bore of the rivet while the rivet is supported by the abutment (32), includes pneumatically operated rivet-feeding mechanism for feeding rivets forwardly along the mandrel, a valve mechanism for shutting off the supply of air to the rivet feeding mechanism thereby to disable it, and the valve mechanism is responsive to the pres

Abstract: A riveting apparatus which includes an elongated mandrel, a mandrel gripping mechanism, a mechanism for feeding rivets forwardly along the mandrel, and an abutment provided by a plurality of members, and a control system including an actuation device such that, upon actuation by an operator of the actuation device, the control system controls the riveting apparatus so that the rivet feeding mechanism is activated and deactivated, the abutment members are closed or opened, and the mandrel gripping mechanism is activated or deactivated, with a time delay between each step, to enable rapid removal and replacement of the mandrel.