Abstract: An improved chemical carbonless copy paper system including an improved hot melt type of coating for one surface of pressure sensitive carbonless copy paper having discrete liquid droplets of metallic salt solution electron accepting chromogenic reagent material contained therein in operative association with an image receptor coating for the other surface of said paper employing tri (p-phenylamino) phenyl methanol as a dye precursor type chromogenic reagent material therein.

Abstract: A method of spraying electrically charged particulate material to ground from a low flying airplane. The method includes the steps of imposing an electrical charge of given polarity upon an emitted primary spray of particulate material of sufficient magnitude to electrostatically enhance the deposition thereof and concurrently emitting a secondary spray of oppositely charged particulate material of selective character from said airborne source at a charge level of a magnitude to avoid material degradation of the charge on said primary spray intermediate its loci of emission and deposition.

Abstract: Improved receptor or CF coating composition for chemical carbonless copy paper employing spirit blue in carbinol form as a dye precursor type chromogenic reagent material.

Abstract: A multi-speed bicycle transmission located at the drive pedal hub and including a drive pedal actuatable shifting assembly for effecting gear change in response to limited reverse rotation of the drive pedal shaft at a pair of predetermined locations in the path of rotative displacement thereof. The drive pedal responsive shifting assembly further includes a slidable collar on the drive pedal shaft having two pairs of selectively contoured camming means thereon that are engageable by radially displaceable shift pin means extending into the pedal hub to effect longitudinal displacement of said collar on said collar on the drive pedal shaft and accompanying shifting of the gears in response thereto.

Abstract: This invention relates to multi-speed bicycle transmissions and more particularly to an improved, pedal hub located and drive pedal responsive multi-speed bicycle transmission system.

Abstract: An improved filter assembly for high temperature dust collection operations including a rigid cylindrical open framework retainer member depending from an aperture in a tube sheet separating dirty and clean air plenums. Surrounding the open framework retainer is a flexible wire mesh sleeve for supporting an elongate tubular bag of permeable fabric filter material. A removably insertable rod member disposed between the flexible wire mesh sleeve and the open framework retainer effectively reduces the degree of play between the filter media supporting wire mesh sleeve and effectively increases the circumference of said sleeve to place the outer surface thereof into substantially continuous interfacial contact with the inner surface of said permeable fabric filter media disposed in surrounding relation therewith whereby the filter material is maintained in a substantially taut, smooth and unwrinkled condition during both normal filter flow and during cleaning operations.

Abstract: A drilling accessory for collecting dust and other debris when drilling a hole in a workpiece. The accessory having a handle for hand holding the device and a hollow open ended dust collector attached to the handle. One end of the dust collector is provided with a split rubber cover spanning the interior of the dust collector through which cover a drill bit may be inserted to engage the workpiece to be drilled. When a forward end of the dust collector is placed adjacent the workpiece to be drilled, and drilling commenced, dust and other debris resulting from drilling will be collected and held inside the dust collector.

Abstract: An improved probe assembly for measuring the conductivity of a plated through hole in a circuit board. The probe assembly having a longitudinal housing and including at the forward end thereof a segmented current injection electrode, each segment being spring biased forwardly and capable of independent movement longitudinally with respect to the housing between a forward position and rearward position. The segmented current injection electrode injecting current into the through hole substantially 360.degree. of the circular edge formed by the intersection of the walls defining the through hole and the surface of the circuit board. A voltage measurement electrode being a knife-blade electrode is positioned in the interstices between the segments of the current injection electrode. The voltage measurement electrode also being spring biased in a forward direction and capable of longitudinal movement between a forward position and a rearward position.

Abstract: A backscatter measurement device for measuring the thickness of a coating on a strip of substrate material moving from a feed supply to a take up location at a predetermined speed. A measurement wheel is provided on the rim of which are mouted backscatter probes for irradiating and detecting the backscattered radiation from the coated substrate. The coated strip of substrate material is threaded around the outer surface of the rim. The measurement wheel is rotated at a speed such that the tangential speed of a point on the rim equals the speed of the moving strip whereby the probe and an adjacent point on the strip are stationary relative to one another while the point on the strip is adjacent the rim. Thus thickness measurements may be taken without stopping the movement of the coated strip.

Abstract: A water insensitive image receptor coating composition for pressure sensitive carbonless type transfer media.

Abstract: The invention relates to an extensible display mounting device that includes a telescoping pole assembly that can be extended to an appropriate desired length and having at its extensible end selectively shaped fixtures for releasably positioning a magnetically adherable mounting member adapted to support a display device suspended therefrom.

Abstract: Method and apparatus for processing shrimp and like arthropoda, comprising a housing, positively driven transport means disposed within the housing and containing a plurality of peripherally extending needles for engaging and impaling deheaded shrimp in a predetermined attitude to sequentially advance them through a plurality of operating stations in a path, defined at least in part, by a selectively shaped tunnel within said housing. The entry to said tunnel is contoured to properly orient the shrimp and to facilitate its initial positioning and displacement relative to the transport means by pneumatic forces. At the first operating station, the relatively thin abdominal shell or membrane disposed on the ventral side of the first five shell segments is longitudinally severed and the interconnection between the swimmerettes and the shrimp body is disrupted.

Abstract: An improved weaving system, method of weaving and apparatus therefor for facilitating individually manipulable single fiber fabrication of woven fabrics.