Abstract: A quick-acting fastener assembly for securing a hinged cover to a storage box wherein the components of the fastener assembly are retained on the box and cover respectively when the fastener is not secured. The fastener assembly is self-actuatable without the need for any external tool, and the component parts are not loose and free to rattle in an unsecured position. The assembly includes a hollow stud member which has screw threads at both ends thereof, a securing nut assembly on one end, an adjusting nut assembly on the other end and a spring. The stud member is slidingly mounted through an opening in the box and includes a tab member carried thereon which restricts rotation of the stud relative to the box and also restricts axial movement of the stud in one direction. One end of the stud includes multiple lead threads which cooperate with the securing nut assembly to fasten the cover.

Abstract: An apparatus used in steam turbines for locking a nozzle block and nozzle chamber together. At least one modified cap screw is engaged with the nozzle block and nozzle chamber and tightened to a required torque. A plate is affixed to either two or more modified cap screws or to both a modified cap screw and the surrounding base metal of the nozzle block or nozzle chamber with one rivet passing through the plate into the modified cap screw and a second rivet passing through the plate into the nozzle block, nozzle chamber, or other modified cap screw. The rivets and attaching plate restrain relative motion between the cap screw and the surrounding base metal of the nozzle block or nozzle chamber thus preventing the modified cap screw from loosening.

Abstract: The present disclosure provides means for locking the engine compartment hoods of vehicles by a device which is detachably secured to the fixed vehicle body structure below a side edge of the hook and has a threaded upward extension which projects upwardly between the edge of the hood and the vehicle body structure. A nut engages the threads of the upward extension and overlies a side edge of the hood to prevent opening the hood. A specially keyed wrench is required to remove the nut and thus release the hood lock.

Abstract: A bolt has an inner end threaded into a door body. A sleeve surrounds the bolt, and a locking bar surrounds the sleeve. A spring is supported by the bolt and urges the sleeve and locking bar toward the outer end of the bolt. A nut is threaded onto the outer end of the bolt and contacts the sleeve, so that rotation of the nut moves the sleeve axially of the bolt to adjust the pressure of the spring on the locking bar. A lock nut is screwed onto the outer end of the bolt and is locked to the nut, so that rotation of the lock nut rotates the bolt and adjusts the circumferential position of the locking bar.

Abstract: A door latch device for securing a door in place closing an opening into an enclosure including an elongated resilient retainer strap having an elongated aperture formed in one end and attachable at its other end to the door, a threaded screw-type fastener with a shoulder formed on its shank having its threaded shank extending through the elongated aperture with the shoulder in abutment with one side of the retainer strap, and a latch plate having a concave depression with a centrally disposed threaded aperture therethrough to receive the threaded shank of the screw-type fastener. The screw-type fastener is held in place in the elongated aperture by a resilient toroidally shaped keeper which fits over the shank of the screw-type fastener on the other side of the retainer strap from the shoulder. The latch plate is attachable to the enclosure adjacent the opening to be closed by the door.

Abstract: The present invention is directed to a lock detachably engaged in a hole in the frame of a sliding window or door with an element on the lock engaging against the window or door to prevent the window or door from being slid from its closed position toward an open position. The lock includes a double lead thread for fast action. An arm on the lock for engagement with the window can be positioned in either of two vertically spaced reduced diameter portions on the lock shaft.

Abstract: A door closure mechanism provided with a frame and a door adapted to be closed into the frame in a manner so as to provide RF shielding. The door is provided with a closure mechanism having a motor-driven threaded shaft mounted on a floating platform adapted to have several degrees of freedom with respect to the plane defined by the door. The frame includes a threaded receptacle adapted to receive the threaded shaft. Electrical switches are provided with respect to the door such that the threaded shaft will rotate uon reaching proximity with the threaded receptacle, thereby securing the door to the frame.

Abstract: A grade-level enclosure for transformers and other electrical apparatus used in utility electric distribution systems, comprising a hollow, open-ended concrete box adapted to be partially embedded in the ground and to extend above ground level, and an open-bottomed cover for the box, whereby to complete the enclosure for the electrical apparatus, special provisions being made for supporting the apparatus in the enclosure, ventilating the enclosure interior efficiently, but preventing the insertion of foreign objects through the ventilation openings, and rendering access for installation, maintenance and servicing of the equipment easy and convenient, while at the same time providing a high degree of security against tampering or entry by unauthorized persons, and a high degree of safety against electrical shock or other injury.

Abstract: A closure for a large diameter circular opening such as the end of a tubular conduit subjected to internal positive pressure comprises a coaxial cover lid that may be opened only when a pressure relieving venting valve is opened, the cover lid being connected over the opening by screw threaded means of larger diameter than the inside diameter of the opening, and the venting valve having a removable closure cap which impedes removal of the lid until the internal pressure is vented.