The Repertory of Patent Inventions, and Other Discoveries and Improvements in Arts, Manufactures, and Agriculture: Being a Continuation, on an Enlarged Plan, of the Repertory of Arts and Manufactures ...

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T. and G. Underwood, 1820
 

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Стр. 205 - Now Know Ye, that in compliance with the said proviso, I, the said Adolphe Nicole, do hereby declare that the nature of my said Invention, and the manner in which the same is to be performed, are particularly described and ascertained in and by the following statement thereof, reference being had to the Drawing hereunto annexed, and to the figures and letters marked thereon...
Стр. 150 - It will be perceived that all these processes are nothing more than preparatory measures, for the operation which is to succeed, viz. that of TINNING. For this purpose, an iron pot is nearly filled with a mixture of block and grain tin, in a melted state; and a quantity of tallow or grease, sufficient, when melted, to cover the fluid metal, to the thickness of four inches, is put to it. However, as some gentlemen may not be acquainted with the difference between block and grain tin, it may be remarked,...
Стр. 276 - STONE": in which said Letters Patent there is contained a proviso obliging me, the said Joseph Aspdin, by an instrument in writing under my hand and seal, particularly to describe and ascertain the nature of my said invention, and in what manner the same is to be performed...
Стр. 154 - Were it not for this parting, the wash-man must skim the oxide off the fluid metal every time he puts plates into it. The pots of which I have given a sketch being all in a state of fitness, the wash-man commences his part of what remains of the business, by putting the plates which have undergone the various operations hitherto described into the vessel of grain-tin, called the...
Стр. 93 - ... nothing is to be laid on the clean stone on pretence of binding; broken stone will combine by its own angles into a smooth solid surface that cannot be affected by vicissitudes of weather, or displaced by the action of wheels, which will pass over it without a jolt, and consequently without injury...
Стр. 122 - The design of putting the plates into the troughs, singly, is, that there may be more certainty of the liquor getting between them, and both the sides of every plate being soaked alike in the lies. In this liquor they remain for ten or twelve hours standing on the edges, but they are turned, or inverted, once during that time. This operation is called working in the lies. The next operation is that of steeping in a mixture of sulphuric acid and water, in proportions which vary according to the judgment...
Стр. 154 - The asterisks show the places where the workmen stand, and also mark those pots which have heated flues under them. No. 4 has no fire under it. The parting in the wash-pot No. 2 is a late improvement. The design of it is to keep the dross of the tin from lodging in that part of the vessel where the last dip is given to the plates. By using the common tin in the first process of tinning, much oxide, or dross, adheres to the surface of the plates, and this runs off in the wash-pot, and comes to the...
Стр. 119 - ... inches long, and 10 inches wide, be bent in the centre at an angle of about sixty degrees, and then put to stand on the two ends, we shall have the form of a plate No. 1. properly bent for the scaling oven. The operation of cleansing, as it is called, and which is preparatory to the process of scaling, is commenced by steeping the plates for the space of four or five minutes, in a mixture of muriatic acid and water, in the proportion of four pounds of acid to three gallons of water. This quantity...
Стр. 91 - ... ounces, the road is to be put in shape and a rake employed to smooth the surface, which will at the same time bring to the surface the remaining stone, and will allow the dirt to go down. When the road is so prepared, the stone that has been broken by the side of the road is then to be carefully spread on it — this is rather a nice operation, and the future quality of the road will greatly depend on the manner in which it is performed. The stone must not be laid on in shovels fully but scattered...
Стр. 153 - ... subsequent process, called washing. As this process is rather complicated, it will be necessary to describe it with some minuteness. In the first place, the wash-man prepares an iron pot which he nearly fills with the best grain tin in a melted state — another pot of clean melted tallow, or lard free from salt — a third pot with nothing within it but a grating to receive the plates — and a fourth, called the listing-pot, with a little melted tin in it, about enough to cover the bottom to...

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