Preloading and retention of an aircraft propeller blade (12) are achieved by a preloading mechanism (85) received within an outer portion of a hub barrel (30) within which the blade (12) is received. The preloading mechanism (85) comprises an annular fastener (90) threaded into the barrel (30). A splined lock ring (125) prevents loosening or disengagement of the fastener (90) from the barrel (30)....

Convertible aircraft passenger seat can be quickly changed from a three-seating position configuration to a more spacious two-seating position configuration without the use of tools. Such a seat permits the seating capacity of an aircraft to be altered to match the expected passenger load in different classes, such as tourist and business class. In the three-position configuration, a pair of relat...

A wet-dry, hand-held vacuum cleaner comprises a housing 22 which encloses a suction fan/motor unit 28,30 and a canister 24 having a nozzle 44 and a storage chamber 46 for dirt and/or water removably attached to the front end of the housing. A partition 70 comprising hood 68 is provided between canister and housing to deflect liquid entering the canister away from the inlet to the suction fan/motor...

A mechanism for trimming the thread on a sewing machine with a laterally oscillating needle has devices for shifting the amplitude of needle oscillation to a center or zero position and for cutting both needle and bobbin threads. Thread connected to a workpiece is easily cut by actuation of the shift device to move the needle to the center position at which time the thread cutting device is actuat...

When inserting a locking wedge (14) having planar wedge surfaces (16, 17) between an anvil (4; 5) and a hammerhead (1) or an anvil block lining (6) the wedge (14), which is provided with a draw head (18; 22) is drawn in between two mutually converging locking surfaces (9, 7) on the anvil and the hammerhead or the anvil block insert.

The present application discloses a method of manufacturing a shell mold in which, with the peripheral portion of an elastic member in the sheet or film form adsorbed to a mold, a negative pressure is provided in a space between the mold and the elastic member, the elastic member is deformed by the outside pressure, molding material put on the elastic member is unflowingly compressed into a shell ...