Abstract: A pair of lenses for an ion beam deposition device permit the formation of an ion beam with good beam characteristics and the variation of ion energy over an extremely wide range and at high perveance. An ion extractor is provided with a shield with a shape closely corresponding to the extraction electrode aperture to avoid sputtering and the introduction of contaminants into the material deposition process at low beam energies at the extractor. A three electrode deceleration lens allows high current beams to be decelerated to an energy of 25 eV for deposition, under some conditions. The combination of lenses allows the ion energy in the beam to be changed at particular regions along the beam so that optimal energies for focussing, mass analysis and deposition can be obtained.

Abstract: A photoelectric switch is sealed against the infiltration of contaminants, for example, oil mist within a combustion-powered tool comprising a switch. In a housing structure sealed by an O-ring when assembled, two photoelectric devices define a line of sight therebetween. A plunger is biased to an inoperative position, in which a shutter portion thereof blocks the line of sight. In an operative position, the shutter portion unblocks the line of sight. The plunger has a stem portion sealed by another O-ring. Where electrical leads from the devices extend through apertures defined within the back member, the apertures are sealed by solder used to connect leads to copper layers, which may be screen-printed upon an outer surface of the back member. A cap mounted upon the back member covers the contacts and admits electrical wires soldered to the layers.

Abstract: A novel folding storm shutter system includes an overhead header presenting a track and a pair of laterally spaced abutment surfaces. The system includes a plurality of trolley supported shutter members which are rotatable about a vertical axis. The system further includes a sill having a guide slot which is disposed beneath the track in alignment therewith. The sill also has a pair of laterally spaced abutment surfaces. An abutment contacting element is disposed at each corner of each shutter member so that when the shutter system is deployed the contact elements come into contact with the abutment surfaces to rigidify the structure. Trolley mechanisms are provided for supporting the trolley supported shutter members from a location midway between the edges of the shutter member so that the entire assembly is evenly balanced to facilitate maneuvering and deployment of the system.

Abstract: In a dust filter baghouse which employs a small-diameter filter cartridge, the same attachment structure is adapted for installation of the cartridge from either below or above the baghouse tube sheet. The cartridge has an annular cap having an external bead which is received within an annular recess of a skirt portion of a hollow boot which is clamped to the cap of the cartridge and extends up to the tube sheet. Where the cartridge has to be installed from below the tube sheet, a cylindrical cup is provided having an inward flange at its upper end which is secured to the tube sheet. The cylindrical cup has an annular external recess which receives an annular internal bead on the hollow boot. Where the cartridge is installed from above the tube sheet, an external annular groove in an outwardly extending flange at the upper end of the hollow boot is received within the peripheral edge of the hole in the tube sheet.

Abstract: In a reverse-air dust collector, each of a plurality of small-diameter filter cartridges is suspended from the baghouse tube sheet in registry with one of the tube-sheet openings by a cap adhesively secured to the filter cartridge and a collar having a shoulder adhesively attached to the cap. The collar has an outwardly flared rim and a depending annular portion which is press fitted into a double-beaded outwardly-spring-biased fabric cuff which is positioned between the depending collar portion and the edge of the opening in said tube sheet. The upper bead of the cuff rests on and is supported by the tube sheet. The rim of the collar rests on and is supported by the cuff.

Abstract: An attachment structure for attaching a small-diameter dust-collecting filter cartridge to the underside of a baghouse tube sheet comprises two bag cups are coaxially aligned but inverted with respect to each other. The upper bag cup has an internal flange at its upper end. The lower bag cup has an internal flange at its lower end. The other ends of the two bag cups face each other in spaced-apart relation. An external circumferential groove is provided near each of the other ends.The internal flange of the upper bag cup is riveted to the underside of the tube sheet. The internal flange of the lower bag cup is bonded to an upper collar of the filter cartridge. A single sleeve of heavy rigid rubber material embraces the spaced-apart grooved other ends of the bag cups. The sleeve has a pair of spaced-apart annular internal beads which are received within the circumferential grooves of the two bag cups.

Abstract: Apparatus for removing and collecting dust from dust laden air includes a traveling manifold which travels through an upper clean-air chamber back and forth from one end of the baghouse to the other. Process air is directed upwardly and inwardly through the walls of an array of filter bags suspended in a lower chamber. At the upper ends of the filters bags are open mouths which communicate with the upper chamber. Pressurized reverse-direction air is injected from the traveling manifold into the mouths of the filter bags through openings in a flat cover plate. A bag support plate, located beneath the cover plate, separates the lower dust-laden air chamber from the upper clean-air chamber. The reverse air is injected successively into the mouths of a single row of filter bags for forcing air outwardly through the fabric walls of the filter bags to cause dust accumulated thereon to drop off and fall into the lower chamber.

Abstract: Automatic fishing apparatus has a rod-holding tube concentrically mounted in a pivoted sleeve which is biased toward an armed position. A solenoid-actuated latch maintains the sleeve in the armed position. The tube is separately biased in the sleeve to permit movement of the tube against a trigger which actuates the solenoid. A calibration circuit permits adjustment of bias on the tube when the tube is in the cocked position.