. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. Fig. I is a the pipe; fig w of one of th of cover; fig. e cocks; fi 4, a transv . 2, plan a erse view; hove and the level of fig. 5, asec- lioual elevalion of n cock fully open,âthe dotted lines show the position of the valve wheu Fig- â â¢. Fig, 5. Mr. Nasmyth claims as newâ1st. The valves being formed with double faces ; 2ndly. The screw passing down through the valve ; and 3rdly. The casting of the cock in one piece. (To Messrs. Nasmyth, Gaskell, and Co.) Gentleme
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. Fig. I is a the pipe; fig w of one of th of cover; fig. e cocks; fi 4, a transv . 2, plan a erse view; hove and the level of fig. 5, asec- lioual elevalion of n cock fully open,âthe dotted lines show the position of the valve wheu Fig- â â¢. Fig, 5. Mr. Nasmyth claims as newâ1st. The valves being formed with double faces ; 2ndly. The screw passing down through the valve ; and 3rdly. The casting of the cock in one piece. (To Messrs. Nasmyth, Gaskell, and Co.) Gentlemen,âI have great pleasure in complying with your request, to give an opinion upon Rlr. Nasniylh's Screw Cock for Water Works.' I have examined and proved two of the cocks, and am quite satisfied that they will answer, in an eflicient manuer, all the purposes for which this kind of Cock is intended. One important feature in your Cocks, as distinguished from those ordi- narily used, is, that they are ail double-faced, and therefore, there is no occasion to have two sets, one single-faced, and one double-faced, and the cost is considerably less than that of the ordinary single-faced Cocks, which are cheaper than the double-faced. Screw Cocks form no inconsiderable item in the first and annual expen- diture of a Water Works, and not unfrequently a single-faced Cock is introduced, on account of its cheapness, where a double-faced would otherwise be preferable. A comparision between the cost of your Cocks, and of ordinary, single, and double faced Cocks, in equal proportions, should be made in order to show the superiority of yours in a commercial point of view, which, after all, is the most important view to be taken in the introduction of improve- ments. The value of Seven single faced Cocks, of the ordinary i constructions, and of the following sizes, viz.â3, 4, 5, J 6, 7, 8, and 9 inches, v\'ill be . . ) The value of the same number, and of the same sizes, of ) double-faced
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Keywords: ., boo, bookcentury1800, booksubjectarchitecture, booksubjectscience
