Aerial lift with workman{40 s basket with protective covering

作者: Bertram Jonathan Leigh

DOI:

关键词:

摘要: Aerial lift with workman''s basket protective covering having a boom structure, the outer end of which can be raised and lowered about horizontal axis, rotated vertical axis moved toward away from platform carrying structure. A an upper open is mounted adjacent Support means secured to includes arm cantilevered over basket. removable canopy provided for securing so that overlies spaced above removably enclosing space between whereby workmen in protected sun inclement weather.

参考文章(3)
Walter E Laun, Portable tree stand ,(1966)
T V Jones, Portable deer stand ,(1968)