Very interesting subject , wich will get us into the world of
cranks , braces , screws and screwdrivers , all those offspring of
Archimede 's creation .. Just for fun : Where and when was the
screwdriver invented ? It is the most common tool in any house
or appartment today .
A book was written about it :
http://www.simonsays.com/content/book.cfm?tab=1&pid=410650
Still , there are no CCW coffee grinders or pepper mills around ,
and the CCW cork screws are sold as practical joke .
Those of us who faced CCW bolts on BSA bikes oil pumps or some car
wheels came to develop an aversion for it .
Henry
Wolodymyr Smishkewych a écrit :
this actually brings up some questions--historically speaking-- as to
the reason for the direction we crank. if the trompette were located
on the opposite side from standard, then CCW cranking owuld be
required. our threading of screws, which usually runs so that
righty=tighty, is also something that in modern construction has
created a convention. is there always documented evidence about the
direction of cranking? the position of the trompette gives us
indications for instruments with a buzzing bridge, but how about those
without? i documented several stone carvings in spain that showed
crank handles being held 'underhand', and also saw photos taken by Tom
Kafka of Antonio Poves, an organistrum reconstructor, where he played
his organistra in a similar fashion. Tom, do you recall what direction
he cranked? I am remembering the photo right, yes?
thanks all,
vlad
