pugging

This is called "pugging," and the whole thing—trough, shaft, and knives—is a "pug mill."

The engravings herewith illustrate a new form of mixing or pugging machine for making mortar or any other similar material.

In our illustrations, C is a knife-edge rail, upon which run grooved wheels supporting the pugging box.

When cracks appear or96 joints open, they should be stopped with a pugging of fire clay and grog.

Where a shelf or prop rocks insecurely, a small wad of pugging (grog and clay) will give a steady bearing.