| 摘要 |
483,933. Casting electric collector shoes. YOUNG, H., and HARLAND & WOLFF, Ltd. Dec. 4, 1936, No. 33251. [Class 83 (i)] In casting a collector shoe 1 for electric rail traction flat or section strips 2 are introduced to prevent breakage, the ends being preferably bent inwards to secure adhesion. |
