About: http://webisa.webdatacommons.org/337786290

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Referring now in detail to the drawings and, in particular FIG. 1 thereof, the major component of the device is a drum 1 which as shown in the drawing has a tooth gear-like outer surface.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com