| 摘要 |
The disclosed invention has to do with the handling of a wall marking chalk line such as is commonly used by sign painters and similarly employed workmen and pertains, more particularly, to novel means which is detachably and adjustably bracketed on a stile of one ladder of a pair of spaced companion ladders and which features headed means adjacent the wall surface to which one end of a chalk line is attached. The invention enables one man, working alone, to ascend the ladder adjacent the free end of the chalk line and to snap a guide line on the building wall. A pair of cooperating brackets provide the novel adapter means. This means is detachably mounted on one stile of the ladder. One of the brackets serves to support the median portion of a shiftable rod. The forward end of one embodiment of the rod is provided with a spring-loaded head to which one end of the chalk line is tied and thus anchored. In a second embodiment the headed end of the rod is stationary and bears against the wall surface to function as the ladder stand-off, that is, to clear the ladder from projecting neon signs and the like on the wall.
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