Friday, August 17, 2007

3 tomatoes, an abortive trip to Hellerup by train and bus 66 to Rigsarkivet Copenhagen and the construction of SS Mercurius mss from1827 to1835 - a ph

3 tomatoes, an abortive trip to Hellerup by train and bus 66 to Rigsarkivet Copenhagen and the construction of SS Mercurius mss from 1827 to1835 - a photoset on Flickr

DSC00099 surveying the track ready for relaying the down line

DSC00139 specification of the hull aa agreed by the shipwrights

6 photographs of better quality because I found the K800i has a special setting for photographing documents

she was built at Harwich 1927 and sailed to London in ballast where Maudsley and Sons installed the engines and boiler and paddle wheelsa in 1828

Maudsley and standard screw threads: "the importance of the uniformity of screws. Some may call it an improvement, but it might almost be called a revolution in mechanical engineering, which Mr. Maudsley introduced. Before his time no system had been followed in proportioning the number of threads of screws to their diameter. Every bolt and nut was thus a specialty in itself, and neither possessed nor admitted of any community with its neighbors. To such an extent had this practice been carried that all bolts and their corresponding nuts had to be specially marked, as belonging to each other. Any intermixture that occurred between them lead to endless trouble and expense, as well as inefficiency and confusion, especially when parts of complex machines had to be taken to pieces for repairs."

some of his machines are in the Science Museum in London but few documents have survived the closure of the works in about 1880


View as slideshow (open in a new window)

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