Abstract: A system for generating cryptographic values. The system includes an imaging assembly for imaging a target member mounted on a base. A controller receives output image data from the image assembly and generates a cryptographic value in response to the output image data. In some embodiments, the target member may be formed from an organic material.

Abstract: This invention relates to an apparatus for aiding the holding and turning of bound sheet music, which apparatus comprises a holder having left and right pockets formed internally of backing members for firmly grasping music pages which are not presently being played, leaving free those pages which are to be played, and incorporates transparent stiffening members for each free page to ensure its laying flat against the held pages, to each stiffening member including a color coded tab member for separating and quickly engaging each page, and an element formed on each backing member for placing the music at a height above the bottom edges of the backing members such that the music pages swing freely and without engaging a conventional restraining ridge normally found on a music supporting instrument.

Abstract: A pipe handling device for transporting pipe, drill collars, or like tubular members between the elevated drilling floor of a well derrick and a lower storage area has a pair of support cables extending between the rig floor and the storage area. A pipe trolley means rides the support cables and is movable along the support cables by a third cable to transport pipe from the storage area to the rig or to lay pipe down from the rig to storage. A cable draw works, typically in the vicinity of the storage area, anchors one end of the support cables and is provided with a take-up mechanism for the support cables to enable them to be slackened to enable a pipe to be loaded into or unloaded from the pipe trolley means in the storage area and thence tensioned to facilitate the travel of the trolley to the elevated rig floor.