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Tal′low-cup.

A lubricating-device for journal-boxes, etc., in which tallow is employed as the lubricant.

In that illustrated, the tallow is introduced through the aperture a, and steam admitted through the hollow valve-stem b; this melts the tallow, and when the upper valve is open, as shown, forces it down into the lower part c of the cup. On raising the stem, the upper valve is closed and the lower one d is opened, permitting the tallow to flow on to the part to be lubricated, the steam-opening in the valvestem being closed by means of the screw-threaded rod e. f is the steam-escape opening.

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