o that these projections correspond to intended to facilitate the discovery of leaks in gas mains or sensitizing with bichromate of potash. their respective depressions, at which position, if tbe nuts pipes. A glass tube is fixed in a very much flattened f un- To imprint the gelatine relief upon… … The advantage claimed for the general method as described IMPROVED NUT LOCK. deposits of bitumen. Now while asphalt is highly combus- is, that the gelatine relief is more easily impressed upon thin tible there seems to be at present no practicable method to sheets of lead than upon thick plates by…
Patents · Inches · Ultramarine · Improved · Patented · Scientific American · Stewed · Electric light · Wrinkling strain · Stewed fruit · Address munn · Gelatine relief · Support nut · Boring head · Brush electric · Lock nut
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