GB190627608A - Improvements in Talking Machines. - Google Patents

Abstract

27,608. English, J. C. Dec. 4. Gramophones.-A gramophone sound-box is mounted so that the stylus is always in a vertical plane tangential to the record groove, the sound being gathered from both sides of the diaphragm and dispersed from two trumpets. Fig. 1 is a plan, and Figs. 2 and 3 are sections of Fig. 1 along lines 2-2 and 3-3, respectively. Elbows 13, 13<1> held in a bifurcated support 12 carry two swivelling trumpets 17, 17<1> at one end, and short sleeves 20, 20<1> at the other end. In the sleeves 20, 20<1> are connecting- tubes 24, 24<1> on horizontal pivots 26, 26', which are connected by vertical pivots 31 to other connecting- tubes 27, 27<1>. Between the ends of the latter, and supported on vertical pivots 35, 35<1>, are two short sections 33, 33<1> supporting the flanges 39, 39<1> of the double sound-box on one side by a bayonet-joint 40, 41, and on the other side by a set-screw 43. The parallelogram shape of the connecting-tubes keeps the stylus tangential with the record groove.