Abstract: A device for sighting-in firearms is disclosed. The device comprises a telescope connected to a mandrel. The mandrel is sized to fit within a variety of calibers of gun bores. The mandrel has a tapered sleeve with a conical shape which centers the outside end of the sleeve in the outside end of the firearm bore. The inside end of the sleeve has a circumferentially expandable structure which allows the sleeve to be secured in the center of the bore when flared by the head of a slideable mandrel core. The telescope is connected to the mandrel with an optical arrangement through which the line of sight of the telescope is observable. The mandrel is constructed so that when the device is inserted in the bore of a firearm, the line of sight of the telescope is centered with and parallel to the axis of the mandrel, which is also the axis of the firearm bore.

Abstract: A continuous web rewinding machine is provided with a geneva cam which is adjustably mounted to a hub by means of fasteners which pass through slotted openings in the cam. The hub is in turn mounted to a turret in order to transmit motion of the cam to the turret. Brackets are provided to lock the turret axis of the turret in place with respect to the rewinder in order to eliminate the swinging of the turret as in some prior art rewinders. By selecting the phase angle of the geneva cam to provide for take-up of a winding web onto a new core on a mandrel at a position no more than 4 degrees above a horizontal line extending through a bedroll, and by ensuring that the separation between each of the mandrels in the bedroll is no less than 3/8ths of an inch, efficient rewinding operations are made possible, without allowing the turret axis to swing with respect to the rewinder, and without the need for a deflector bar.