Anyone heard of a North Plug or IBM wire relays ... Re: Jones plugs, or similar sorts of plugs

William Donzelli wrote: http://www.chdickman.com/IBM/490-0056/ My recollection was a little fuzzy on some details. The wiring is made up of wires with crimp terminal plugs on the ends and each relay socket terminal has two receptacles for the wires. The relay moving contacts are actuated in a group by a plastic piece connected to the armature. The each moving contact consists of two fine (#30) gold wires. The narrow relays have 4 Form-C contact, the intermediates 6 and the wide ones 12. The plug and terminal strip are not part of the base socket frame, but were likely made by us and then added to the frame. The date code on the chassis says 1976, so this is probably the last one built and then cannibalized for relays to send to customers. After looking at it, I wish that it still had the full compliment of relays. It might be interesting to make something out of it. -chuck