Basf Aktiengesellschaft

Richard Schneider

Karl Uhl

Klaus Manzke

Lambert Kohl

Peter Hammerschmitt

An information disk store possesses an air circulation system in a substantially sealed housing, by means of which system, which includes a channel for directing air to the end of the hub on which the disks are mounted, and a low-pressure compartment that is shut off from the disk compartment by a main filter, a first positive pressure gradient from the bottom to the top of the housing is set up in the peripheral space adjacent to the disks. It is advantageous to also set up a second positive pressure gradient in the direction of rotation of the disks, in the peripheral space adjacent to the disks. The novel air circulation system can be used with advantage in all information disk storage systems in which the write and read operations may be adversely affected by dust and dirt.

Plural-disk rotatable disk memory with air circulation system

A device for positioning magnetic heads over preselected tracks on magnetic disks in memory processing units, the device consisting essentially of a linear electric motor, including a stationary, partially hollow magnetic device, and of a support member and a guide member which is mounted on the latter in an axially movable manner and is provided with at least one head mount for at least one head support, wherein the support member is mounted at one end of the magnetic device and is otherwise unsupported by the chassis of the memory processing unit.

Device for positioning magnetic heads in memory processing units

An automatic loading/unloading device for at least one magnetic head, consisting essentially of a support for the head and a spring-like member incorporating a ramp, the head support being decouplable from the spring-like member during loading and recouplable thereto upon unloading. The loading/unloading device of the invention can be used with advantage in any type of magnetic storage system which employs rigid magnetic media and magnetic heads which can be positioned relative to said magnetic media.

Device for the automatic loading/unloading of at least one magnetic head

A change-over mechanism for disk-shaped recording media, especially for magnetic films in a sleeve, is provided with a magazine and with selector, transport and drive mechanisms which can provide any desired access to any recording medium and permit trouble-free operation. The mechanism can be used for floppy disks and any type of film-like or rigid recording media.

Change-over mechanism for recording media, especially for floppy disks

A magazine for transport and operation in a device for a plurality of film-like flat recording media, especially of floppy disks. Details of the magazine according to the invention relate to a part which receives the recording medium, a lid, a mechanism for locking the said parts together, and a guide and gripper part.

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Heidelberg-Neuenheim, Germany

Richard Schneider