| 摘要 |
<p>329.911. Durigneux, J. Vialard, L. Mougne et Cie, L. May 2, 1929, [Convention date]. Monogrammic signs.-In luminous advertising signs of the kind having a panel 1 of electric lamps 2, the circuits of which are controlled by the movement of a perforated insulating strip 11 over contacts 4, the contacts are arranged in the cover 7 of a trough 5 containing mercury 6 slightly above the level of the contact surfaces so as to maintain a light pressure on the strip. One side of each of the filaments and of the source of current 13 are earthed. The strip passes over curved surfaces 10 on the cover and is wound upon rollers 8, 8<1>, or alternatively is of the endless type.</p> |
