platten (platen)

t. [ gla . The hot cylinder is first cracked on one side in a straight line longitudinally by the application of a cold iron rod; then it is laid in the flattening-oven (which has a smooth stone bottom), and kept there in a soft state till it opens out; and lastly it is smoothed out with an implement called flattener. Sometimes the cylinders are cut longitudinally with a diamond, and then placed in the furnace or flattening-arch for opening and smoothing. The flattening of crown-gla is called flashing. plattening (plat'en-ing), n. [Verbal n. of plat ten, v.] In gla - manuf., the proce of forming gla into plates or sheets. See platten.