Mortar and pestle - Wikipedia
A mortar and pestle is a kitchen device used since ancient times to prepare ingredients or The antiquity of these tools is well documented in early writing, such as the Egyptian Ebers Mortars and pestles were traditionally used in pharmacies to crush various ingredients prior to preparing an extemporaneous prescription.
study the effect of some operational factors on hammer…
evaluated taking into consideration hammer mill capacity , efficiency, farms in Egypt, for this reason, such care had to be taken to evaluate this (1) Feed hopper, (2) Crushing chamber, (3) Outlet, (4) Pulleys, (5) Belt, (6) Motor, (7). Operating