Walter Dale Anderson

US Patent:

42063191, Jun 3, 1980

Filed:

Jan 20, 1954

Appl. No.:

3/405270

Inventors:

Howard L. Daniels - St. Paul MN
Walter L. Anderson - Falls Church VA
Robert R. Reisinger - Mahtomedi MN

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H04K 106

US Classification:

179 15C

Abstract:

1. A time-delay scramble equipment comprising, a drive motor, a combined ut commutator element and brush element, one of said input elements being mechanically coupled to said motor, said input commutator element having a predetermined number of conducting segments, a magnetic recording drum mechanically coupled to said drive motor, said recording drum including two attached sections for rotation together, each section of said recording drum having a plurality of axially spaced recording tracks, the number of tracks on each section of said recording drum being one-half of said predetermined number of input commutator segments, a plurality of aligned record-pickup heads, the number of record-pickup heads being equal to the number of recording tracks on said recording drum, one of said record-pickup heads being disposed at each recording track, electrical means connecting in sequence said input commutator element segments to respective ones of said record-pickup heads, a corresponding plurality of aligned erase heads one at each track and angularly spaced 180 degrees from said record-pickup heads, an erase supply, a combined erase commutator element and brush element, one of said erase elements being mechanically coupled to said motor, said erase brush element being connected to said erase supply, said erase commutator element having two conducting segments disposed diametrically apart, each of the segments of said erase commutator being electrically connected to all of the erase headsassociated with a respective recording drum section, a cross-wired wheel for each recording drum section, each of said cross-wired wheels having the same number of connections as there are record-pickup heads associated with the respective recording drum section, electrical means connecting the record-pickup heads associated with each recording drum section with a corresponding cross-wired wheel, a combined output commutator element and brush element, one of said output elements being mechanically coupled said motor, said output commutator element comprising two adjacent arcuate sections, each section having a number of segments comprising twice the number of connections of each of said cross-wired wheels, electrical means connecting each cross-wired wheel to a respective section of said output commutator with each connection of each cross-wired wheel being connected to two output commutator segments that are an even number of segments apart, said motor driving each of said elements mechanically coupled thereto at the same angular velocity, a positioner wheel mechanically coupled to each of said cross-wired wheels, each of, said positioner wheels including a conducting ring formed with a single interruption, a plurality of brushes for each positioner wheel equal to the number of connections in each cross-wired wheel and spaced at angular intervals about said rings respectively, a positioner supply, a positioner wheel motor connected in series between said positioner supply and said rings and mechanically coupled to said positioner wheels, relay switch means for each of said positioner wheels, each of said relay switch means electrically coupled to the brushes of the respective positioner wheel and to said positioner supply for connecting one brush associated with each positioner wheel to said positioner supply and a random binary pattern generator coupled to said relay switch means for controlling the operation of said relay switch means to select at random for energization the one brush associated with each of said positioner wheels for controlling random angular positioning of the respective cross-wired wheels.