| 摘要 |
<p>A railcar brake head having an upper end, a lower end, and a pair of sides. The brake head further includes an elongated concave keyway defining an elongated axis and opening to the upper and lower ends of the brake head. At least a portion of the keyway is defined between a rear wall and spaced transversely extending upper and lower lugs. A front surface of each lug is adapted for mounting engagement with a brake shoe. The longitudinal spacing between the centralized upper and lower lugs is such that a keybridge extending from a rear face of the brake shoe is received and accommodated therebetween whereby inhibiting endwise movement of the brake shoe relative to the brake head.; The centrally disposed upper lug on th? brake head is configured with a camming surface, a longitudinal portion of which is arranged relative to the keyway for guiding and facilitating movement of a free end of an elongated key downwardly past the upper lug.</p> |
