To remove pitch buildup on blades, mix a 50/50 ratio of chainsaw bar chain oil and diesel fuel in a spray bottle and spray onto blade every minute or so. I have heard stories of using an old car windshield cleaner pump to deliver the solution to the blade. It works very well and I have no pitch remaining on the blade.
Coat of arms. A coat of arms is a unique heraldic design on a shield, escutcheon, surcoat, or tabard. A coat of arms is used to cover, protect, and identify the wearer. Thus the term is often stated as coat-armour, because it was anciently displayed on the front of a coat of cloth in European societies.
The Meaning of Symbols on a Family Crest/Coat of Arms. There are literally hundreds of different symbols (or charges) that can appear on coats of arms. The colors that are chosen and even the shape of the shield itself can have significance for the Family, Clan or Sept that was to bear the arms.