A New General Theory of the Teeth of Wheels

according action angle angular appear arrangement assumed axes axis becomes belonging centre circle complete compute condition continue corresponding cross curve cutter described determined direction disappear disc distance divided draw entire epicycloid equal equation error extreme figure force friction give given greater half Hence hour-glass curve increase intersection involute leaves less limits means measure mechanical metacentric method motion move normal number of contacts obliquity obtain once orbit outline parallel pass pinion pitch line pitch point Plate plerotic point of contact position possible practical pragmatic present pressure rack radius ratio reach represented result satisfy seven shape shew shewn side suppose surfaces Table teeth tooth touch tracing point train turn velocity wheel whence wherefore whole zero