Abstract: 1. Apparatus for producing multiple combinations of parallel output binary signals for controlling an anti-jam or other form of telegraphy system comprising four parallel feedback shift registers, a pair of serial to parallel converters, each having an input terminal, means for combining the output signals of said shift registers for producing two separate serial signals, means for coupling one of said serial signals to the input terminal of one of said converters, means for coupling the other of said serial signals to said input terminal of the other of said converters and means for changing the output signal of one of said converters when said separate signals are identical for a predetermined number of binary digits, said feedback shift registers having pluralities of separate stages and a feedback mixer having input terminals connected to the last and certain other three of said stages, and an output terminal connected to the first of said stages.

Abstract: A self-plumbing, counter-rotating trolley and track suspension system for supporting an operable wall panel is disclosed. The suspension system comprises a trolley assembly, including a pendant bolt to provide a common axle on which a pair of counter-rotating discs are rotatably mounted in spaced apart alignment. The track-contacting surface of each disc is spherically formed, with each surface generated from a common centerpoint but having unequal radii so that the surfaces generated by the radii have curvatures which are similar but are not congruent. The suspension system also includes a track having a pair of vertically spaced and diametrically arranged rails, each rail defining a cylindrical surface which is generated from the same common centerpoint of that of the discs, the locus of which lies above the rail-contacting surface of the upper disc.

Abstract: A universal latch means for a drop seal assembly which is adapted for mounting to the lower end of a movable wall assembly, is disclosed. The drop seal assembly includes a universal latch means mounted on each end thereof for releasibly coupling each adjacent drop seal assembly in longitudinal alignment and in which each panel is locked from transverse relative movement. The latch means includes an alternating tongue and groove so that the tongue of one latch means nests into the complimentary groove of the adjacent latch means to releasibly lock each adjacent drop seal in longitudinal alignment and each panel is locked against vertical, horizontal and transverse movement.

Abstract: A tub filling and shower fitting having a change-over valve means is operatively coupled to tub spout inlet whereby the change-over valve means is shifted from a tub mode to a shower mode by swivelling of the tub inlet spout.