In situ preservative treatment of railroad tie

B - Operations – Transporting – 05 – D

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117/114.6

B05D 3/12 (2006.01) B05D 7/06 (2006.01) E01B 3/36 (2006.01) E01B 3/46 (2006.01)

Patent

CA 1316776

ABSTRACT OF THE DISCLOSURE A method of in situ treatment of the interface between a wooden railroad tie and a rail supporting tie plate of the type having spike holes adjacent the rail in communication with the interface. Certain of the holes are unoccupied while others receive spikes which extend into the tie. The method comprises engaging an injector in sealing relation with one of the unoccupied spike holes. Operating the injector to inject under pressure a wood pre- servative preparation of generally paste-like consistency into one of the unoccupied empty spike holes until said preparation begins to escape from the interface. The pre- paration includes a water soluble fungicide. The injector is then disengaged to relieve the pressure upon the pre- paration. Finally the fungicide is allowed to migrate along any moisture paths in the railroad tie for penetrating the wood cell structure adjacent the paths.

563956

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