Repertory of Patent Inventions and Other Discoveries and Improvements in Arts, Manufactures and Agriculture (Volume 13, Nos. 73-78) (Paperback)

This historic book may have numerous typos, missing text or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1840. Not illustrated. Excerpt: ... should be so near together: I consider it immaterial, so far as the propelling goes, what distance the floats are apart. I consider that each float acts independently, I do not see how they can assist each other. It is desirable to have the greatest resistance, but the resistance will not be increased, till the parts are actually in contact. My object was to get the paddles in the water to follow each other on the cycloidal curve, and to do that, they must be near each other; but I did not mean to place them so near, with a view to increase the resistance. James Jar vis sworn.--Examined bjr Mr. Alexander.-- I was Captain of the Endeavour in 1839; the model of the wheel used on that vessel is quite correct. We tried it a month or six weeks. I thought it went a little faster than by the old paddle, and made less sea. A great many persons looked at the wheel during that time. James Sheriff sworn.--Examined by Mr. Hill.--I am one of Messrs. Maudsley and Co.'s foremen; I superintended the fitting up of the Endeavour with a paddle of the same construction as the model which has been shewn me. She continued her journey to and from Richmond with this paddle, about a month, or six weeks. Peter Barlow sworn.--Examined by Mr. Hill.--I am Resident Engineer on the South Eastern Railway; I was engaged by Mr. Field to arrange the results of his experiments, in order to compare them with other paddles. Strangers were admitted to see these experiments. I saw the model of the paddle which Mr. Field exhibited to the Lords of the Admiralty, it was made on the cycloidal principle, that is, precisely on the principle which the patent claims. Cross-examined by Mr. Attorney General.--I have not been engaged in making paddles, but I had great opportunities while living with my father at...