Abstract: A robotic shuttle for moving a storage media cartridge from a first location to a second location in a storage library subsystem, said robotic shuttle riding on a linear bearing surface in the storage library subsystem. The shuttle has a frame with at least two ports for receipt and discharge of the storage media cartridge. A rocker beam is rotatably attached to said frame, with one end of the beam protruding from one of the ports and the other end of the beam protruding from the other of said ports. The beam is fitted with rotating drive rollers that move the storage media cartridge when they come into contract with it. The direction of movement of the cartridge depends upon the direction of rotation of the drive rollers.

Abstract: A computer data storage cartridge magazine for carrying data storage cartridges from conventional "off-line" storage to a storage library subsystem where cartridges may be electronically read or written. The magazine comprises a series of horizontally arranged slots. Each slot has a front spring lever which is operated by the user to insert and remove individual cartridges and a rear locking lever which is operated by the robotic mechanisms of the library subsystem. A safety bar extends substantially the length of the magazine and is located under the rear locking levers. The safety bar acts to ensure that the rear locking levers do not become accidently depressed when the magazine is carried by the user. The safety bar is disengaged by a mated pin when the magazine is inserted into the library subsystem. The rear locking levers may then be actuated (depressed) by an arm on the robotic mechanism of the library subsystem.

Abstract: A roofing tool is disclosed and includes an elongated handle having top and bottom end portions. A head member is provided and includes a flange portion secured to the bottom end portion of the handle and has a base edge and first and second side surfaces. The head member also includes a foot portion extending outwardly from the base edge of the flange portion away from the flange first side surface, the foot portion having top and bottom surfaces, a front edge, a side edge distal from the flange first side surface, and a rear edge. The rear and side edges of the foot portion are tapered while the front side edge of the foot portion is at least blunted. Finally, the flange portion is aligned with the handle so that the plane defined by the bottom surface of the foot portion is at approximately a 30.degree.-60.degree. angle relative to the axis of the elongated handle.

Abstract: A storage library subsystem comprising a frame, a robotic shuttle attached to and linearly movable relative to the frame, a media read/write device attached to the frame, and a storage media cartridge magazine attached to the frame. The robotic shuttle is provided with a plurality of ports for receipt and ejection of storage media cartridges. The media read/write device is disposed opposite a first port of the robotic shuttle at a first point of the linear movement of the robotic shuttle so that a storage media cartridge may be passed between the device and the robotic shuttle at the first point of linear movement. The magazine has at least one slot for storage of a storage media cartridge, the slot being disposed opposite a second port of the robotic shuttle at a second point of the linear movement of the robotic shuttle so that a storage media cartridge may be passed between the slot and the robotic shuttle at the second point of linear movement.