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US3305663A
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Work supporting means in welding apparatus
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US3230616A
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Method of welding replacement elements such as grouser bars, drive sprocket rims, and replacement element therefor
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US3110278A
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Apparatus for replacing grousers and the like
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US3021081A
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Flux grinding apparatus
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GB878547A
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Welding apparatus
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US3024353A
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Current controllable alternating current relay circuit
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US3014519A
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Drive assembly
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US3082366A
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Means for speed control of a direct current motor operating from an alternating current supply source
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US3114032A
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Means for controlling on and off periods of welding equipment in refacing link tracks and the like
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US3110279A
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Double ended work positioner
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US3019328A
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Link track refacing apparatus
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