Abstract: A xerographic CRU (Customer Relpaceable Unit) for an electrophotographic printing machine. The xerographic CRU has retaining features and cooperates with a drive module with certain retractable features that allow the insertion and removal of the CRU without causing damage to the photoreceptor and other critical subsystems. The unit further has many locating members for other subsystems so that critical tolerances are maintained. An interface with a single handle assembly retracts/unlocks and extends/locks the drive module and the associated CRU subsystems into an operative position. The CRU also has electrical and drive connections for the cleaning system, the charging system and transfer/detack.

Abstract: A folding saw includes a double edge saw blade first and second frame members pivotally connected to one end of the blade, and first and second handles pivotally joined to the first and second frame members respectively. Frame members and handles are movable between a closed configuration covering the edges of the blade, and an open configuration in which they together form the saw handle. The first and second handles lock together in both configurations. One handle member includes a retractable knife blade.

Abstract: A foldable bucksaw includes an elongated hollow box frame, which is also a blade storage sheath, with left and right handles connected by over center hinges to the ends of the box frame for movement between storage position and operative position. A screw mechanism on one handle is connected to the sawblade to tighten and loosen it. The screw mechanism includes an adjusting screw mounted on the handle and a tensioner nut for connection to the blade. The tensioner nut includes a central threaded aperture, a blade mount portion below it to position the sawblade in line with the adjusting screw, and an upper portion for extension into said saw handle to prevent the tensioner nut from rotating when the adjusting screw is rotated and while the blade is in use.

Abstract: A cell and process is provided for the production of fluorine comprising electrolyzing a liquid mixture of fluorides of alkali metal, ammonium and hydrogen fluoride. The cell anode comprises a stock of anode plates with internal passages or it may comprise a carbon shape provided with grooves and passages and fitted to a central conductor which conducts current from the exterior of the cell to the carbon anode plates within the cell. The anode having a substantially expanded working surface has the capability of removing fluorine internally. A louvered cathode permits most of the hydrogen to be vented away from the zone between the electrodes through which current passes thus reducing the ohmic voltage loss. The cathode, rather than being louvered, can be expanded metal or punched sheet or gauze. The anode, cathode and barrier may be cylindrical in form although other shapes, for instance rectangular or square in cross section or even of hexagonal section, may be used if desired.