228,793. Marks, E. C. R., (Weiss & Co., J.). Nov. 19, 1923. Horns and the like, arranging and supporting; tone-arms.-In a gramophone of the kind in which the mouth of the tone-arm is enclosed by a spherical, paraboloidal, or like casing having apertures in its wall, the casing is rigidly mounted on the tone-arm, and the portion of the. tone-arm within the casing is curved. Fig. 2 shows a construction in which the sound-box b is immediately connected to a curved sound-funnel or tone-arm a, which is enclosed within a casing made in two parts c, d tightened together by rubber rings e. Openings f are provided in the paraboloidal part c. The whole device is supported by means of a sleeve g, engaging a rod h pivoted on the casing of the gramophone. In the modification shown in Fig. 3, the tone-arm comprises an S-shaped section l. In two further constructions, one of which is shown in Fig. 4, the casing surrounding the tone-arm a comprises an apertured spherical portion such as n, in combination with a hemispherical or paraboloidal part such as o spaced apart from the portion n.