Talk:Treadwheel crane

Peterborough Cathedral
There's an orignal example of such a crane preserved in the north-west tower of Peterborough Cathedral, close to the ringnig chamber. As I recall, there's also a (smaller) replica on display in the cathedral itself. I'll see if I can find any refs. David Underdown (talk) 16:32, 28 October 2009 (UTC)


 * Aha http://books.google.com/books?id=MqSXc5sGZJUC&pg=PA111&lpg=PA111&dq=%22peterborough+cathedral%22+crane&source=bl&ots=P6XbgFvwoH&sig=QYExCcB24KzRawLQt6yyF-nvmqA&hl=en&ei=aHXoSqvzOt2MjAfX-4StCA&sa=X&oi=book_result&ct=result&resnum=7&ved=0CBgQ6AEwBg#v=onepage&q=%22peterborough%20cathedral%22%20crane&f=false says there are such cranes still in the towers of Peterborough and Salisbury Cathedrals, and at Tewkesbury Abbey. David Underdown (talk) 16:48, 28 October 2009 (UTC)


 * Many cathedrals did have treadwheels used to raise materials. Canterbury Cathedral still has one in the Bell Harry Tower. These cannot be considered as cranes though because they lack a jib. Mjroots (talk) 05:12, 29 October 2009 (UTC)

What about Gdansk crane (rebuilt after World War II).
Here is a link to German article:

http://de.wikipedia.org/wiki/Krantor_%28Danzig%29 —Preceding unsigned comment added by Pernambuco1 (talk • contribs) 04:23, 5 November 2009 (UTC)

====Yeah, about that crane... It was burned by the Soviet troops after they conquered the city in early 1945. AFTER?! So when all other cities of Europe were shelled into oblivion with barely a few buildings left, article implies that soviets had done this one on purpose? Also good job of "conquered". Yeah, sure, I know that modern political situation and rules of political realism demand Poland to cultivate nationalism and thus the longer amount of time passes since WWII the better guys nazis would be and the worse the soviets, but somebody is really pushing it here. Changing the phrasing, sorry. If there are sources and arguments against this, please provide them. 93.125.106.93 (talk) 09:55, 27 February 2018 (UTC)

Error
The article reads: "the lifting capability of the Roman Polyspastos proved to be 60 times more efficient (3000 kg per person)" referring to the lifting capability of 6,000 kg - but this required a crew of four, with two in each treadwheel (as pictured). Thus it would only be 30 times more efficient, lifting 1,500 kg per person.

87.57.192.222 (talk) 15:59, 15 January 2013 (UTC)

I think it any case that efficiency is the wrong concept here. Macboff (talk) 15:24, 9 September 2021 (UTC)