E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
248/8.5
E02D 5/00 (2006.01) E02D 17/08 (2006.01)
Patent
CA 1084030
ABSTRACT Shoring sheets are provided with a continuous rack extending for the full height of the sheet engageable by a ratchet jack supported on the ground surface at the side of a trench or hole to enable the sheets to be jacked up and down. Similar sheets may be attached to the upper ends of those sheets to increase the depth of shoring for deep holes. The jacks may be mounted on wheels running on rails, and the rails may be mounted on rollers running on the ground.
298158
Macrae & Co.
Treacy Thomas P.
LandOfFree
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