Abstract: A device for ejecting radar chaff comprising a magazine having a number of tubular cells in which chaff bundles are displaced towards an ejection end of the cell. The displacement of the chaff bundles is obtained by means of a plunger device which is longitudinally movable in each cell. Each plunger device is driven by a wire running from an attachment point on the plunger device to the ejection end, and therefrom to a driving wheel. The wire also drives a knife element. The knife edge of the knife element performs a cutting movement substantially longitudinally of the cell, the cutting movement preferably being rotational and in the opposite direction to the direction of movement of the chaff bundle.

Abstract: A device for sensing the torque of a tape driving shaft transferred to a driven shaft, and indicating absence of tape to be driven. The shafts are resiliently coupled, and apertured opaque discs are coupled to the respective shafts. Radiation emitting and sensing elements on a movable bifurcated arm are held by the tape in alignment with the disc apertures to sense torque, and are moved clear of the discs if no tape is present.

Abstract: A mosaic printer comprising a printing head with relative movability along a printing line on a printing sheet to be printed. The head supports a number of wire ends arranged along a substantially rectilinear line extending perpendicular to the printing line and each wire end upon excitation producing a printing mark on the printing sheet, desired signs being formed by selective activation of the said wire ends during relative motion of the printing head. According to the present invention at least the front portion of the printing head, which determines the orientation of the said substantially rectilinear line, is rotatable about an axis, which is substantially perpendicular to the printing sheet, whereby signs having different inclinations can be formed by rotating the front part of the printing head.