| 摘要 |
408,182. Fittings for securing books in position on shelves. GLOVER, H. S., 34, Bentley Lane, Leeds. Nov. 30, 1933, No. 33548. [Class 52 (i).] Books are supported on shelves by means of pairs of pivoted arms a, b which can be displaced inwards by the book on insertion and fall outwards on its removal under the action of a counterweight c. The back plate g with the sockets d for the arms may be mounted over a shelf as shown or may form part of the structure of a book trough or bookcase. |
