The solderability of copper and copper alloys is improved by applying a composition comprising certain triazole compounds, a carrier to impart a uniform coating on the material to be soldered and a solvent for the triazole and the carrier.

A fastener having a shank divided into first and second portions respectively located adjacent a head end and a tapered pointed end with the first portion having a single thread formed thereon of uniform pitch. A multiple of parallel threads of similar uniform pitch are formed on the second portion of the shank and one of the threads on the second portion is a continuation of the thread on the first portion. All of the threads have a substantially uniform minor diameter while the major diameter ...

Improved elastomeric fibers are disclosed and claimed which are comprised of alternating hard and soft segments, i.e., polyesterurethane copolymers, wherein the fibers are improved in properties, particularly permanent set. The fibers of this invention have utility in conventional textile uses.

A Jacobs chuck key holder mounted on the hand-drill housing for pivoting movement from an out-of-the-way clearance position into meshing engagement with the Jacobs chuck, either the chuck ring or drill operative end thereafter being rotated relative to the other to cause engagement or disengagement of the drill jaws with the drill bit, and the key lacking, as unnecessary, a centering projection so that no special alignment of the key with the drill operative end is required for the aforesaid mes...

An aircraft of improved of simplified construction having forward and aft generally cylindrical and substantially identical fuselage sections that are connected to a central fuselage section that houses an engine that has an inlet located above the forward fuselage section for powering the aircraft in flight. The central long axis of the aft fuselage section is located above the central long axis of the forward fuselage section. Wings are connected to the central fuselage section and a tail asse...

A switching mechanism that is adapted to be incorporated into a seat to sense the presence of an occupant and actuate a switch in response thereto. The switching mechanism includes a switch supported in a housing and having a movable element with an actuating system cooperating with the switch. The actuating system includes an elongated member having one end connected to the support and a free end spaced from the support. The elongated member extends generally parallel to the upper surface of th...

A prism binocular with molded hollow body housings each having a preformed shelf or seat to receive a first prism in optical alignment behind an objective lens. The prism is clamped in place by a block which carries a second prism positioned ahead of an ocular lens. The block is secured to the housing interior, and is movable to provide a coarse collimation adjustment during assembly of the binocular. A cover panel is fitted over the front of the housing and includes an integrally formed light s...

An improved sheet transport mechanism to facilitate the removal of jams occurring along the sheet transport path of a sorting apparatus. The sorting apparatus comprises one or more modules having a plurality of trays for storing sheet material and deflector members associated with each of the trays when actuated to route the sheet material from the transport mechanism into a corresponding tray. The improvement resides in mounting the transport mechanism in such a manner as to enable camming the ...

A dental handpiece having a rear housing containing a power assembly and a front housing containing a chuck assembly. The front housing is provided with an assembly for quickly connecting and removing the same from the rear housing. Additionally, a novel mechanism is provided for securing a bur in the chuck assembly. The mechanism includes a rotatable sleeve having a pair of balls secured in grooves therein. Rotation of the sleeve moves the balls in grooves of a linearly moving connector which i...

Tire construction featuring as the principal reinforcement a combination of chopped bundles or cords, each composed of an assembled plurality of glass filaments held together, and chopped discrete glass filaments distributed throughout the rubbery matrix generally uniformly, preferably at a level of about 2 to about 35 parts of glass per 100 parts of rubber and preferably with the bundles exceeding the discrete filaments in amount on a weight basis.