Abstract: A door lock including a mounting structure secured to a door, a bolt movable into an extended position in which it projects from an edge of the door, a lock cylinder for operating the bolt, and a holder in which the cylinder is mounted. A retaining mechanism, accessible through a release aperture on the edge of the door when the door is open, normally secures the holder to the mounting structure but permits the holder to be released to remove the cylinder.The retaining mechanism can include a latch member that is engageable with the holder under the urging of a spring to prevent the holder from being removed from the mounting structure. Mutually engagable cam surfaces carried by the holder and the latch member cause movement of the latch member to permit installation of the holder. Alternatively, the latch member can be a screw, eliminating the need for a spring to urge it toward the holder.

Abstract: A storage and dispensing cabinet in which films, tape cassettes or similar articles are stored in parallel open-ended slots. The cassettes are held in the slots and selectively ejected by an ejector mechanism formed by resilient retention members at the front ends of the slots and resilient drive members at the back ends of the slots, the retention and drive members being secured to a base that provides a raised platform on which the cassettes are supported. The retention members for the various slots are integrally formed as a single piece, the drive members being integrally formed in a similar manner, but separately from the retention members. When a cassette is to be ejected, the appropriate retention member is depressed, causing an abutment that normally engages the leading edge of the cassette to be withdrawn. The drive member then springs forward to its relaxed position, partially ejecting the cassette so that it can be withdrawn.

Abstract: Members, such as piles for off-shore oil and gas well platforms, are driven into the ground by the extension of a hydraulic jacking cylinder. The cylinder is held in position within a working tower in which the uppermost pile section is contained. Electro-osmosis may be used to reduce soil friction. Successive pile sections are brought into position by securing them to a horizontal loading door of the working tower and then raising the door pivotally. The section is then suspended within the working tower and aligned with the prececing section by an internal alignment tool prior to welding.