Abstract: For fishing lines through a number of conduits connecting one or more junction boxes or terminal devices, a bridging section temporarily couples incoming and outgoing conduits through the junction box or device. The bridging section has an internal contour leading smoothly from one conduit end to the other, the conduit ends typically protruding into the junction box such that the bridging section can enclose over the outside of the protruding portions of the conduit ends. The bridging section can have two sections divided longitudinally, coupled at a hinge axis and spring biased to engage against one another. Preferably the closed bridging section is substantially airtight and continues an airtight path through the two conduits, whereby the lines can be fished by pneumatically blowing a plug connected to a string through the path for the lines. The string is attached to the lines, which are pulled back through the conduits.

Abstract: A cam locked stud nailing fixture includes a fixture base formed of a base web with depending side plates and a pair of spaced apart abutment flanges upstanding from the base web and having ends defining an abutment surface. A cylindrical cam is eccentrically mounted on one of the side plates and has a cam lever attached for pivoting the cam member. The other side plate has a plurality of gripping spikes projecting inwardly. The fixture is clamped onto a main framing member, such as a sole plate of a frame, by pivoting the cam into compressive engagement with the main framing member which causes the gripping spikes to extend into the main framing member to prevent slippage of the fixture along the main framing member. A branch framing member, such as a stud board, is positioned with its end against the main framing member and with a face engaging the abutment surface formed by the abutment flanges of the fixture. The fixture forms an anvil to stabilize the position of the stud during nailing.