To analyze the bond between the skin and core of a metal honeycomb section a hologram is formed of the skin surface and then the skin is heated and a real time holographic interferometry comparison is made. The bowing of the section during the heating results in a high interference fringe frequency over much of the surface making analysis difficult. The angle of the illumination beam and the position of the spacial filter producing the illumination beam are adjusted, relative to the object, to r...

Metallic parts having a hard wear-resistant surface and the high impact resistance associated with softer materials are formed by coating a plurality of ductile, relatively soft metallic segments with a relatively hard wear-resistant material, stacking the segments so that portions of each of their coated surfaces are exposed to form a composite coated surface, and mechanically locking the segments together to form a unitary member. The members formed by this technique exhibit the surface charac...

A feed line for conveying gasoline from the air side of an engine diaphragm fuel pump to the intake manifold consists of a tube having an interior strip with a width equal to that of the inside diameter of the tube wound into a spiral along its length and fixed within the tube. The feed tube allows the return of fuel reaching the air side of the diaphragm of the fuel pump to the engine in the event of rupture of the diaphragm, without the danger of backfire. The introduction of the unatomized fu...

A work holder for a lathe employs a collet having one end secured to the draw bar of the lathe so as to move the collet within an adapter having a complementary tapered surface. A work stop for controlling the depth of insertion of work within the collet is disposed within the collet and retained by pins which have their ends secured at diametrically opposed points in the adapter and pass through slots in the collet to maintain the stop at a fixed position with respect to the machine independent...

A metal filter clogged with polyethylene waste is cleaned by suspending it within an induction heating coil in a nitrogen atmosphere and passing current through the coil so as to first raise the temperature of the filter above the melting temperature of the polyethylene but below the auto ignition temperature of the polyethylene. This heating is continued until the bulk of the plastic melts and falls into a water tank supported below the boil. The current through the coil is then raised to heat ...

A dry base to be processed in the manner of coffee to produce a coffee-like beverage is produced by coating cereal grain with a liquid extract of carrots and/or parsnips at an elevated temperature. Ground red corn may be added to the coated grain and then the product is roasted.

A tool for applying masking tape to automotive body moldings is formed about a frame having a tape reel support at one end and a tape applying roller at the other end. The tape applying roller has a resilient cylindrical surface with a thin steel flange at its outer edge. Two handle sections are attached to the frame allowing it to be grasped in two hands. The flange is inserted between an edge of the molding and the supporting body section to pull the edge slightly away from the body and guide ...

To perform holographic interferometric analysis of the deformation of a relatively small section of a larger surface, the section is first painted with retro-reflective paint and a photographic plate is supported parallel to and closely spaced from said section. The light beam from a laser is passed through a diverging lens onto the photographic plate to illuminate the section, thereby exposing the photographic plate to direct illumination from the beam and to reflected radiation from the sectio...

A detachable sun panel for the roof of an automobile consists of a transparent panel adapted to be supported on a resilient molding extending around the perimeter of an aperture formed in the roof. The molding is adapted to be installed in a hole cut in a conventional roof and engages the sheet metal of the roof as well as the underlying headliner. The panel carries a pair of extensions on one end which engage the underside of the molding and a pair of latches on the opposite side which may be m...

A detachable sun panel for the roof of an automobile consists of a transparent panel adapted to be supported on a resilient molding extending around the perimeter of an aperture formed in the roof. The molding is adapted to be installed in a hole cut in a conventional roof and engages the sheet metal of the roof as well as the underlying headliner. The panel carries a pair of extensions on one end which engage the underside of the molding and a pair of latches on the opposite side which may be m...