Abstract: A two-stage process for the co-production of aniline and m-phenylenediamine where, in the first stage, benzene, nitric acid, and sulfuric acid are reacted in a liquid phase to produce in greater amounts nitrobenzene (approximately 70%) and m-dinitrobenzene (approximately 30%), and in lesser or trace amounts o-dinitrobenzene and p-dinitrobenzene, and water; and in the second stage the products of the first stage are reacted with hydrogen in the gas phase to produce aniline (approximately 70%) and m-phenylenediamine (approximately 30%) in greater amounts, and o-phenylenediamine and p-phenylenediamine in lesser amounts, and water. The reaction products are separated by distillation.

Abstract: In a xerographic image transfer device, copy sheets are sequentially aligned and position sensed before introduction to the image transfer zone. The position sensing is used to compare the copy sheet location with the position of the image panel on a moving photoconductor. The timing and velocity profile of the copy sheet drive after the position sensing is arranged so that the copy sheet arrives in registry with the image panel and at the same velocity.

Abstract: A gasket has an eyelet attached to a flat body portion 1 and the eyelet includes primary (6) and secondary (2,3) sealing zones. An annular seal of a rubber sealing material (9,10) is deposited on the eyelet at least between the primary and secondary sealing zones.The seal of rubbery material may also extend over part or all of the secondary sealing portion of the eyelet and may extend on to the body portion.

Abstract: A carburetor air control valve device which accurately meters air flow to each of the ports of a carburetor. A plurality of closure members of the poppet type are operated by expansion of a bellows member, as the bellows member expands in response to changes in density of the air to which the valve device is subjected. Each of the closure members is adapted to control flow of air to a port of an automotive carburetor.

Abstract: In a document copier machine an almost completely enclosed optics module is provided to keep the optical components isolated from the remainder of the machine and thereby minimize contamination of the optical components. The described module has three large openings. One of these openings is an air inlet which opens to the exterior of the machine for bringing cooling air to a fan located inside the module. The second opening is an air outlet to allow the optics cooling air to exit. The third opening is critical to contamination and is an aperture which opens to the interior of the machine to allow illumination to pass from the optics module to a photoreceptive surface. In order to prevent air flow into the module through the aperture, louvers are situated at the fan to direct an airstream onto a first Coanda surface to move air toward the aperture.

Abstract: Computer apparatus which employs a plurality of processing units, a memory unit, and a communication unit, each of the units including a data transfer bus. A bus coupler is provided between each pair of units of differing type to form a distributed data communications network. An addressable, passive task register is associated with one of the units for communication through the couplers and is adapted to register a task priority value associated with a task request, the register being readable by any one of the processor units to obtain the highest priority value registry.

Abstract: An apparatus for transporting and wrapping pipe insulation comprising a frame and a pair of arms mounted on the frame for swinging movement about a longitudinal axis. A row of longitudinally spaced vacuum pads is suspended and on each arm a pair of transversly spaced rows of longitudinally spaced vacuum pads are suspended on the arms inwardly of the first-mentioned rows on said arms. Vacuum can be selectively supplied to the rows of vacuum pads. Means are provided for swinging the arms toward and away from one another whereby when the arms are extended and the vacuum pads are brought into engagement with a generally flat piece of insulation, the insulation is engaged and may be lifted and transported by manipulating the frame to bring the insulation adjacent a length of pipe and the arms may thereafter be swung inwardly to wrap the insulation about the length of pipe.

Abstract: The error-checking scheme disclosed herein is adapted for use in digital data processing systems, e.g. computers, in which binary data is variously transmitted and/or stored and in which the data source or destination is designated by a binary address. In a preferred embodiment, the data is divided into two fields and a respective parity bit is generated corresponding to each data field. Each data parity bit is then combined with a parity bit corresponding to the binary address to yield a respective combinational parity bit. Each of the resultant combinational parity bits is then sourced with the respective data field. Accordingly, a system sub-component receiving the sourced data with the combinational parity bits can detect any type of single error occurring in either the address or the data.

Abstract: A vacuum pad comprising a body having an opening therethrough. One end of the opening is adapted to be attached to a source of vacuum. A water trap chamber is provided on the body communicating with the opening. A cup of flexible material having a peripheral lip is mounted on the water trap chamber and has an opening therethrough providing communication between the interior of the water trap chamber and the space surrounded by the peripheral lip.

Abstract: A vacuum pad system comprising a plurality of vacuum pads to which vacuum is selectively supplied and a de-icer supply mechanism selectively connected to the vacuum pads to supply de-icer to the pads and thereby to purge the pads.