Lining apparatus for the protection of trenches
OwnerJosef Kringsinventor
Life of this patent
Estimating the term…
Abstract
This disclosure relates to a lining apparatus for the protection of trenches, which lining apparatus includes lining plates which are insertable in pairs in vertical sliding carriers on the side of the trench and are capable of being pressed against the wall of the trench by expanding devices, each lining plate including two component plates connected together loosely and detachably and the component plates being guided together in the sliding carriers with the outer dimension of the component plates being approximately equal to those of a unitary lining plate.
Claims6
Lining apparatus for the protection of trenches comprising vertical sliding carriers and lining plates which are insertable in pairs in said vertical sliding carriers on the side of a trench and capable of being pressed against walls of a trench by expanding devices, each said lining plate comprising two component plates assembled together loosely and detachably, said component plates being guided together in said sliding carriers, and one of said component plates has a bracket along its lower edge which engages under the lower edge of the other of said plates to generally maintain a vertically adjacent relationship between said two component plates.
Dependencies are inferred from the claim text.