A pressure-sensitive writing stylus and associated circuitry for use in a personal identification system that uses handwriting pressure as an identifying discriminant. The stylus includes a housing, and a cartridge mounted within the housing. A capacitive transducer, preferably a piezoelectric crystal, is mounted contiguous with the upper end of the cartridge and is responsive to axial loading forces in the cartridge caused by contact of the cartridge tip against a writing surface. The transduce...

A signature delivery and collating system which includes an inserter mechanism for inserting preprinted cards or sheets into pockets of a collator into which signatures are also fed from a continuous stream of overlapped signatures.

An improved signature handling apparatus includes a movable gripper jaw which operates in conjunction with similar gripper mechanisms to clamp and spread the signature so that the laps fall on opposite sides of the saddle in a saddle gatherer. In order to assure that the pages on the opposite sides of the fold fall on the appropriate side of the saddle gatherer, a sensing means is utilized to detect whether all of the pages on one side of the signature are properly clamped by the gripper jaw. Si...

In an apparatus for stitching signatures, an interruptable signature stitching means comprising a drive means operatively connected to an interrupting means which is operatively connected to a stitching head means to selectively actuate said stitching head means, said interrupting means being adapted to selectively interrupt the stitching action of said stitching head means when the thickness of said signatures varies from a predetermined value.

A signature is holographically recorded for correlation and parallel procing against a large library of signatures. A transient electrical signal produces a pressure wave in an optical wavefront modulator where it is frozen in position by a picosecond laser. The modulated wavefront is made to interfere at a hologram plane with a reference wavefront which is converging to a focal point behind the hologram plane. Because the holograms are of the Fresnel type, the hologram plane may be partitioned ...

An instrument for determining the individual proportions of specific colors ithin the visual spectrum which includes sensing means for each color to provide an electrical analog of the color energy/bandwidth. The sensing means comprises for each spectrum, one or more photocells each coupled with an appropriate transmission filter. These photocell-filter combinations are selected to cover uniform portions of the spectrum to provide weighted equal responses for selected color bands across the enti...

A technique for simulating the thermal appearance of objects. Electrical rgy is applied to conductive material that is attached to a mounting surface shaped in the form of the selected object. The conductive material is placed to simulate the radiation pattern that the object has been shown to demonstrate.

A realistic audio-visual effects generator for simulating anti-tank and a-aircraft missile launching. A pyrotechnic cartridge having disc at one end that ruptures and allows the efflux of the products of combustion to exit through a hole in the breech block which is placed at the muzzle end of the firing chamber. Along with the simulated cartridge discharge is electrical circuitry for determining if the cartridge has been properly chambered. The circuitry acts to prohibit firing should it be det...

In a system for verifying a person's handwritten signature on a travelers check or the like by comparing the signature with a signature previously written by the person whose name is signed, both signatures are written on signature fields on the face of the check. Each field incorporates a similar arrangement of lines of pressure sensitive material that produces visible marks on the back of the check at points at which the lines of the signatures cross lines of the pressure sensitive material. W...

Thermal suppressors and techniques for the use thereof are utilized to reduce the thermal signature of an object having a temperature greater than its environment. Multi-layers of low emissivity materials separated by air spaces are used to minimize heat transfer by radiation. This design, coupled with a technique for inducing air flow through the spaces between the various layers for cooling the outer surface of the suppressor, effectively reduces the temperature of and thus the thermal signatu...