Assertion: bottle's mark | /r/MadeOf | machine
Facets:
Source sentences:
text: This mark was formed by machines that utilized a push-rod valve to eject the partially expanded parison out of the one-piece blank mold (the "press" part of the process) to be grasped by "transfer tongs" when shifting the parison to the second blow mold (the "blow" part of the machine process) (Tooley 1953).