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US2469062A
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Apparatus for full fusion welding of rails
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US1947966A
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Rail welding mold
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US1917868A
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Hood for welding molds
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US1895219A
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Means for drying mold copes
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US1914878A
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Cope for rail welding molds and method of forming the same
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US1872391A
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Crucible for alumino-thermic reactions
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US1883755A
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Crucible for alumino-thermic reactions
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US1892376A
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Mold for welding rails
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US1888815A
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Method and apparatus for pressure butt-welding tubes and the like
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US1878809A
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Rail clamp
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US1741399A
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Method and means for the alumino-thermic welding of rails and the like
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