Browse Prior Art Database

Core Holding Device for Array Wiring

IP.com Disclosure Number: IPCOM000092597D
Original Publication Date: 1966-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 68K

Publishing Venue

IBM

Related People

Rose, RF: AUTHOR

Abstract

In the manufacture of magnetic core memory arrays, the cores to be threaded must be arranged in the proper rectangular array and maintained in alignment while the several array wires are threaded through them. This device facilitates this operation.

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Core Holding Device for Array Wiring

In the manufacture of magnetic core memory arrays, the cores to be threaded must be arranged in the proper rectangular array and maintained in alignment while the several array wires are threaded through them. This device facilitates this operation.

The core holding device comprises rectangular sheet 1 of nylon or satin cloth having pressure-sensitive adhesive coating 2 on one surface. Paper liner 3 is provided over coating 2. Liner 3 bears printed wiring registration lines 4 with identifying characters printed around the periphery. The registration lines show the position of, for example, every fourth row and column in the array and the positions for entry and exit of sense and inhibit windings.

Liner 3 is die-cut, as shown at 5, to form four removable windows, each the size of one quarter-section of the array to be wired. The liner 3 portions covering these windows can be pulled off, as shown at 6, to expose underlying coating 2.

In operation, the cores to be threaded are set up in the proper array pattern by a suitable fixture, such as a vacuum jig having a small arcuate slot at each core position connected to a vacuum source. The holding device is prepared by stripping the paper liner 3 covering the four quarter-section windows and it is then placed over the cores in the jig. The exposed adhesive in the windows causes the cores to adhere firmly to the holder in the proper pattern. Window 7 is shown with cores in place.

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