. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 408 THE CIYIL ENGINEER AND ARCHITECT'S JOURNAL. [October, pieces of tape nliicli are fastened to the rings b,b, and also to the springs tlieir object being to prevent llie apparatus extending beyond a certain length ; d, d, fig. I, is an eiastic covering ot india-rubber fabric, uliicb is drawn over the spiral spring and douM-d down at the ends, and then passed over or upon the projecting pins or screws seen in fig. 3 ; e, e, are plates lia\ing an opening /, provided with a va
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 408 THE CIYIL ENGINEER AND ARCHITECT'S JOURNAL. [October, pieces of tape nliicli are fastened to the rings b,b, and also to the springs tlieir object being to prevent llie apparatus extending beyond a certain length ; d, d, fig. I, is an eiastic covering ot india-rubber fabric, uliicb is drawn over the spiral spring and douM-d down at the ends, and then passed over or upon the projecting pins or screws seen in fig. 3 ; e, e, are plates lia\ing an opening /, provided with a valve uhicli opens inward, and is actuated by a spring in such manner as to press it against the plate, this plate being screwed or rivetted against the rings as seen at figs. 1 and 2, firmly secures the india- rubber fabric or outer covering d, d. Supposing the apparatus to be in a portable or closed slate, as at fig. 2; then in order to inflate it with air ready for use, it is only necessary to take the nautilus and by pressing with the fore finger of hand, open the valves//, then by drawing out or extend- ing the apparatus, the nautilus will become inflated with air, which is pre- vented from escajung by the spring valves//; i, i, is a spring clasp for fas- tening the nautilus or life preserver and swimming belt, round the body of the wearer. MOSAIC WORK. John Rodert Dicksee, of Old Compton Street, Soho, Square, Middlesex^ artist, for " improvements in tite manufacture of mosaics.*^âGranted March 30 ; Enrolled September 30, 1844. The material employed by the inventor for producing mosaic work is prin- cipally opaque glass, but he also employs transparent glass, the mosaic pieces may be made of any size or colour, or of any combination of colours, the same (according to this invention) being produced by casting, moulding, or pressing, and in order to jjroduce the larger pieces uf mosaic work, the in- ventor takes two smooth iilates cf metal, in one of which there is
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