Abstract: A door panel latching apparatus including first and second elongated rods telescoped together for relative sliding movement. The first rod is mounted to the door with a free end for latching near an upper door edge and free to rotate about its longitudinal axis but is prevented from moving longitudinally. The second rod is mounted to the door with a free end for latching near a lower door edge and free to rotate about its longitudinal axis and to move along its longitudinal axis. A handle is connected to the rods by a linkage for longitudinally moving the second rod when the handle is rotated about an axis perpendicular to the longitudinal axis of the rods and for rotating both rods when the handle is rotated about an axis which is coincident with the longitudinal axes of the rods.

Abstract: Locking means for a cutting die blanket including male and female locking elements that may be quickly engaged with minimal effort. A series of shoulders, located in the female section, are provided to engage a ledge on the male section. The locking means is closed by forcing the male section into the female section through a series of steps wherein the ledge and shoulders cooperate to effect engagement.

Abstract: A tamper-indicating seal of the type having a bolt retained in a lock body, wherein the lock body is surrounded by a shroud of frangible, brittle material and provided with a grooved outer surface and flanged entrance way for receiving and surrounding the bolt end, whereby the shroud is easily fractured, thus providing visual indication of tampering. Visual detection of tampering may be enhanced by a coating applied to the outer surface of the shroud.

Abstract: A close-wound coil spring moves a driven member in response to movement of a drive member. The spring is moved when one end thereof receives transverse force from the moving drive member; the other end of the moving spring transversely applies force to the driven member. If the transverse forces on the spring are less than a given amount, as when the driven member moves relatively slowly, the spring acts as a rigid lever capable of moving the driven member synchronously with, and during the same time interval as, the drive member. If the transverse forces on the spring exceed the given amount, as when the driven member moves suddenly or at high speed, the spring flexes according to Hooke's Law and moves the driven member asynchronously with, and during a different time interval from, the drive member. In the latter case, the spring's flexure limits the force applied to the driven member, preventing damage thereto.