Abstract: This invention relates to a novel modular carpet tile mat construction and a process of making same. More particularly, the invention relates to a novel modular carpet tile mat construction which is specifically adapted to hold carpet tiles in a fixed position so that they may be used in combination as a floor mat or a covering for part of a floor area, or a self-contained floor covering.

Abstract: A digital data processing system including an interconnection for the various elements that constitute the system. Each element that connects to the interconnection is called a nexus. For one element to communicate with another element, the one element, as a commanding nexus, seeks control of the interconnection and then transmits a command and address of a storage location in the other element when it receives control of the interconnection. Control is then relinquished unless the one element is to send data to the other element whereupon the data is sent immediately. If data is to be retrieved, the other element retrieves the data, requests control of the interconnection and, when it receives control, transmits the data onto the interconnection with an identification of the one element. The one element then retrieves the data from the interconnection when it recognizes its own identification.

Abstract: A digital data processing system including an interconnection for the various elements that constitute the system. Each element that connects to the interconnection is called a nexus, and each nexus in the system can communicate with other nexuses on a priority basis. A central clocking circuit generates timing signals that control such communications by defining bus cycles on a synchronous basis and each nexus contains priority circuitry that operates in response to these signals. Each nexus that requires access to the interconnection asserts a transfer request signal at a predetermined time during each bus cycle. Priority arbitration circuitry in each nexus receives all such requests and samples them at another, later, time during each bus cycle. When a nexus is transmitting a request and no nexus with a higher priority is transmitting a request, that nexus takes control of the interconnection. A transfer during a subsequent bus cycle to another nexus can be prevented during certain types of transfers.

Abstract: A spooler arranged for leading wire to a rotating spool through a wire tension controller and winding it onto the spool while distributing it in alternating directions along the spool between flanges thereof has means for varying the length of the distribution in either direction, arranged to be so controlled by means responsive to changes in the length of the wire in the wire tension controller in a period adjacent the moment of change to the other distribution direction as at least to reduce wound wire profile deficits or excesses adjacent the spool flanges.

Abstract: A spooler arranged for leading wire to a rotating spool through a wire tension controller and winding it onto the spool while distributing it in alternating directions along the spool between flanges thereof has means for varying the length of the distribution in either direction, arranged to be so controlled by means responsive to changes in the length of the wire in the wire tension controller in a period adjacent the moment of change to the other distribution direction as at least to reduce wound wire profile deficits or excesses adjacent the spool flanges.