| 摘要 |
A ladder foot (20) comprises (a) a bracket means (25) attachable at its upper end to a ladder rail (11) and including a stud (35) extending downward from such end, (b) a shoe (60) including a central sole plate (61) and a pair of upper plates (62, 63) extending from the sole plate to straddle opposite sides of the bracket means, and (c) a pin (75) fixedly secured with the upper plates and passing from one to the other through the bracket means adjacent the front side of the stud. The downward extent of the stud includes an upper range within which the stud fits between the pin and sole plate in such manner that the shoe is locked in toe-down position. Such extent also includes a lower range for which, if the pin is moved to register therein, the shoe is angularly adjustable from its toe-down position through a range of angular positions including a flat position. Integrally joined with the stud at its upper and lower ends are portions (45, 50) serving as stops for the pin, such portions cooperating with the pin to form a partial slot having a gap in its perimeter on the side of the slot away from the stud.
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