Abstract: Pepper spray canister is mounted in the tubular bore of a cane or walker leg or handle, and is actuable by a trigger mounted adjacent, or in, the handle after release of a safety interlock. Several embodiments are shown, both with the canister in the handle or remote therefrom, and wherein the spray can exit the base (tip) of the cane leg or adjacent the handle. One embodiment comprises a trigger interlock button sleeve mountable at the top of the leg with the canister, actuable by a rod passing down the leg, located adjacent the lower end of the leg. Other embodiments include a straight, T-shaped or L-shaped handle which houses the canister. Several trigger mechanisms are shown: first at the rear juncture of the handle and leg; at the forward juncture thereof; or on the forward top surface of the handle.

Abstract: An optical scanner for light detection and color ratiometric measuring for use in apparatus to sort small particles such as seed and beans which are projected or propelled through the scanner at relatively high speeds to be scanned on all sides by a narrow light plane and viewed by a plurality of photoelectric devices. Several lamps are used in conjunction with cylindrical lenses to produce a substantially uniform collimated light plane perpendicular to the path of the particles. The lamps and lenses are interspersed with the photoelectric devices such that light reflected from the portion of the particle being scanned is detected by the photoelectric devices which are responsive to selected wavelengths and which responses are separately fed to an external electronic circuit for processing according to spectral responses such that said responses can be measured individually or compared with each other to determine certain color characteristics of the particle being scanned.

Abstract: A feed wheel for use in sorting apparatus for feeding beans or other similar articles to be sorted in single file into a viewing head in which the objects are optically examined to detect those of undesirable quality or characteristics. This feed wheel is provided with two disc members that are supported in spaced relation by a hub that may be readily disassembled. Peripheral portions of the disc members are provided with inwardly projecting flanges for gripping and supporting a plurality of small scoops extending around the circumference of the disc members. A plurality of locking devices are provided to the disc members for holding the disc members clamped against the scoops so that said scoops can be removed and replaced only when the locking members are disengaged.