A device for determining the genuineness of documents, such as paper bills. The bill is clamped between two planes. One plane has spacing ridges which abut against the paper thickness outside the printed surface pattern, and a plunger abuts against the top of the printed surface pattern at some selected portion thereof to measure the height of the printed surface at that portion above the thickness of the paper.

A variable orifice extruder head for extruding parisons whose wall thickness may be varied over the length of the parison. The extruder head comprises a die assembly movable with respect to a fixed mandrel for varying the die assembly orifice. The die assembly is supported by suspension rods from a fixed housing through which the mandrel passes and in relation to which the mandrel is also fixed. The suspension rods are threaded at their upper ends and have spur gears threaded thereon. An interna...

The chronograph drum is mounted in fixed bearings at top and bottom so as to rotate in a fixed vertical axis. The drum can be driven at high or low speed by a motor.

A propulsion mechanism, such as a pump, for propelling liquids first radially and then axially through the mechanism at high pressure, the mechanism having within a cylindrical housing a rotor balanced to minimize radial and axial forces on the rotor whereby bearings are not required for the rotor.

The cutter assembly utilizes a rotor having a plurality of cutting edges thereon and a bed knife which are spaced so as to provide a precision fit for cutting of various materials such as paper fed between the same. The bed knife is mounted so as to be adjustable with respect to the rotor such that a zero tolerance can be maintained. An overriding conveyor is utilized to feed the material into the space between the rotor and bed knife. The cutting edges of the rotor are disposed in an angular re...

Mixing characteristics of an elastic melt extruder are improved by providing, in the opposing, spaced-apart walls of a rotor and a stator, shaped recesses arranged annularly about the axis of rotation. During processing, the visco-elastic material, generally travelling radially inward between the wall surfaces of the rotor and the stator, is accelerated into the recesses and mixed together before it is caused to move in toward the center of the gap and continue its radial inward movement with th...

A device for controlling a paper web with at least two sections, each section being provided with its own driving member and amplifier for the speed control. A measuring means is arranged in this speed control to measure the position of the paper web and the output signal of said means is supplied to a summation amplifier. Said summation amplifiers are cascade-connected and their input sides are provided with emitters for process signals and potentiometers which are fed from a ramp voltage propo...

This disclosure is directed to novel compounds which are silyl glycidylamines, to polymers of such compounds, and to glass fibers and laminates in which said compounds are used as sizing or bonding agents. The compounds of this disclosure are characterized by substituted silyl groups, preferably having at least one oxygen atom bonded thereto, wherein the silicon atom is bonded through a carbon atom to a nitrogen atom which in turn is bonded to an epoxy group. An example of these new compounds is...

A combined drawing board and container for artistic materials which may alternatively be used as a briefcaselike container for the artistic materials or as a drawing board for them.

Vapor deposition means in combination with means to deliver an air stream adjacent to the vapor stream whereby to mask predetermined portions of a substrate. Separate exhaust means are opposed to the respective coating and masking streams. Means convey the substrate between the opposed delivery and exhaust means.