Abstract: The presently disclosed subject matter is directed to devices for carrying and releasing stores from a vehicle, such as ejector racks for carrying and releasing a store with respect to an air vehicle.

Abstract: The presently disclosed subject matter is directed to devices for carrying and releasing stores from a vehicle, such as ejector racks for carrying and releasing a store with respect to an air vehicle.

Abstract: A fixture is described for aiding the grinding and polishing of a facetted gem, the fixture to be pivotably mounted to a vertical stand at one side of a rotary-driven grinding and polishing disc. The fixture comprises upper and lower supporting arms to overlie the disc, an upper alignment head supported at the end of the upper supporting arm for engagement with the upper end of the holder stick carrying the gem, and a lower alignment head supported at the end of the lower supporting arm for engagement with the lower end of the holder stick, to thereby position and hold the holder stick and the gem at a right angle to the disc as the fixture is swung on the stand to sweep the gem across the face of the disc.

Abstract: A device for holding precious stones during cutting and polishing the facets thereof comprises a rod having a mounting tip at one end for mounting the stone, a positioning collar loosely received on the rod so as to be movable both axially and rotatably thereon and including a plurality of flat faces on its outer surface each adapted to be pressed against a locating surface of an aligning fixture for positioning the stone with respect to a cutting or polishing disc, an indexing collar having a plurality of indexing positions, and spring means for fixing the positioning collar to the indexing collar and the latter collar to the rod at desired preselected positions.