The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 67
mislead than when made by an obscure individual. If Iam wrong in my views and calculations, it will be easy to discover theseat of error and thus elicit truth, and I shall then be the first toacknowledge it ; but should this letter be the means of preventinga needless expenditure of money, I trust… … TRAVERSING SCREW-JACK. FiGuuES I and 2 exhibit the screw modification. The screw-jack a is bolted to the plank c ; at the other end of the plank is fixedthe rack g, in which the toe of (he strut/ advances as the screw Ij iselevated; the strut works in a joint in the follower k: the position ofthe…
Architecture · Civil engineering · Science
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