tallized, and the crystals, thus produced, are dissolved in one pound of distilled water. The gold is then precipitated by pure magnesia, and is washed, first, with distilled water, acidulated with nitric acid, and afterwards with distilled water alone; after which the washed precipitate is dissolved in a suitable quantity of the solvent, and then one-fifth more of the latter is added, in order that it may be in ex

The preparation of the liquor is finished by allowing it to rest for twenty-four hours, and then filtering it.

The coppering liquor is produced by dissolving seven pounds (avoirdupois) of the crystals of sulphate of copper in thirty pounds of distilled water, and adding thereto a solution of carbonate of potash, in water, until precipitation ceases. The precipitate is then collected by filtering, and, after being washed with distilled water, is placed in an earthen vessel, and dissolved in the solvent above mentioned. One-third more of the solvent is then added to the solution, in order that the solvent may be in excess, and the solution is allowed to rest for twenty-four hours, and is afterwards filtered.

The patentee claims, Firstly,-the method of coating with metal the surface of articles formed of metal or metallic alloys, by means of magnetic apparatus, in combination with metallic solutions; and Secondly, the application of solutions, in water, of that class of salts known to chemists as the sulphites, for dissolving the preparations of silver, gold, and copper, for the purpose of coating with metal the surface of articles formed of metal or metallic alloys.-[Inrolled in the Inrolment Office, February, 1843.]

To CHRISTOPHER NICKELS, of York-road, Lambeth, in the county of Surrey, Gent., and CALEB BEDELLS, of Leicester, manufacturer, for their invention of improvements in fabrics produced by lace machinery.-[Sealed 15th September, 1842.]

THIS invention relates to manufacturing those descriptions of fabrics which are produced by lace machinery, wherein

a series of threads, placed side by side, in the form of a warp, are, by suitable apparatus, caused to be looped together on needles; thereby producing various descriptions of looped fabrics. The present improvement consists in a method of manufacturing such descriptions of warp fabrics, by applying threads or yarns of cotton, silk, or other suitable fibres, which have been first printed with ornamental patterns or devices; whereby looped warp fabrics, made in lace machines, may be made of a more elegant description than when such fabrics are made with yarns or threads of the same color from end to end. This invention also relates to the application of printed yarns or threads in the lace fabrics manufactured by twist lace machines.

The first improvement consists in using warp threads with printed patterns thereon, which are to produce fabrics by being looped together. The second part of the invention consists in using printed warp threads, which are to run longitudinally of the fabrics made; but such printed warp threads are not caused to be looped on the needles, but are threads simply laid into the looped fabrics produced by other warp threads; such fabrics, being made of an open character, will show the ornamental printed patterns on the inlaid warp threads through the same. The third part of the invention consists in inlaying threads or yarns, which have been previously printed with ornamental patterns, transversely of looped fabrics produced in warp lace machinery. The fourth part of the invention consists in manufacturing looped warped fabrics, by causing threads or yarns, each of one color, to be inlaid, either longitudinally or transversely, into looped warped fabrics, made with threads or yarns previously printed with ornamental patterns; and the fifth part of the invention consists in the application of printed yarns or threads, as warp or bobbin threads, when making fabrics in twist lace machines.

It is well known that in manufacturing looped warp fabrics in lace machines, that the length of warp, used for producing a given length of fabric, will depend on the length of the loops, and on the more or less open character of the work produced on a given gauge of needles; hence, in

printing warps of thread or yarn, which are to be looped into each other to form fabrics, the patterns or designs must be of such increased length, as will cause the designs or patterns to assume their correct outlines and figures, when they are worked up into a fabric. This additional length of the pattern or design, to be produced in a fabric, prevails to some extent, when weaving fabrics with warp and shuttle, where the warps used are previously printed; but this lengthening of the figures, designs, or patterns, on warps which are to be formed into fabrics, by looping them into each other, will require that the designs printed on the warps, should be more elongated than when used for weaving with warp and shuttle; and this additional length will depend on the particular gauge of needles used, and the character of the fabric to be produced; but the workman, knowing the length of warp required for producing a given quantity of fabric of a particular texture on a certain gauge of needles, will direct the pattern to be printed of a length proportionate to the length of warp used up in producing a given quantity of fabric.

When making looped warp fabrics which have looped pile on one surface, (as is now sometimes the case,) the elongation of the design will require to be still greater than when making the ordinary looped warped fabrics; but when using threads or yarns which have been previously printed, for the purpose of being laid into looped warp fabrics, in the progress of their manufacture, in a longitudinal direction, or in a transverse direction,-in general, the figures, designs, or patterns, may be printed of the size which it is desired they should appear in the fabrics in which they are to be inlaid; for patterns in such cases, will be very slightly distorted, as the printed threads, or yarns, will be very little bent out of a straight line.

The workman having introduced his warp into the machine, proceeds to work in the ordinary manner, and he will produce very elegant fabrics, with ornamental patterns or designs, presenting a peculiar character, differing from all fabrics heretofore made; and although it would be impossible to describe all the variety of fabrics which may be

produced when using printed warps as the inlaid threads, it may be desirable to give an instance of the peculiar characters of fabric which may be so produced :-Thus, supposing the texture of the looped fabric were an open lace-work, of any of the variety of patterns which this class of machinery is capable of making, and of one color, or in stripes of various colors, and that the inlaid printed warp were of a different color,-in such a case, the fabric would offer the appearance of a tracery of lace over a printed fabric; and this would also be the case when the inlaid threads are not printed, and printed threads are employed as looping-threads; then the fabrics produced would offer the appearance of printed lace fabrics over a ground of other fabric; and thus, by varying the colors of the warps, great varieties of effects may be obtained, or the color of the ground of the printed warp, and the color of the unprinted warp, may be the same. In some cases, strands of either covered or uncovered Indiarubber thread may be introduced, in a longitudinal or transverse direction, in the same manner as it has heretofore been introduced into looped warp fabrics, when elasticity is required to be given.

In producing fabrics, according to this invention, in twistlace machines, the printed threads or yarns may be either used for warp or for bobbin-threads, care being observed to print the patterns or designs much longer than they are to be when manufactured into a fabric, as the length of thread used up in either case is greater than the length of the fabric produced; when used as warp-threads, the additional length of the design or pattern will not be considerable, whilst the threads, used for bobbin-threads, will require the patterns or designs to be considerably longer. In using printed threads as warp-threads, much care must be observed in introducing the warp into a machine, that the pattern should not be distorted; and when using printed threads as bobbin-threads, much attention should be paid to winding the threads on to the bobbins, and to see that each of the springs of the bobbins may offer, as nearly as possible, the same pressure, in order that each thread may be used up as fast as the other; and although it will

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be generally too expensive to obtain a design of any degree of intricacy, when the bobbins traverse, yet, when the threads are printed, at regular intervals, with different colors, in the traversing and twisting with the warp-threads a very peculiar effect will be obtained.

In making what are called straight down nets, that is, where the bobbins do not traverse from selvage to selvage, the bobbin-threads may be printed with more elaborate patterns; and when there is more or less close or ornamental patterns of cloth-work, the printed patterns of the bobbin-threads will be brought out with more or less distinctness.

The patentees claim, Firstly,-the mode of manufacturing looped warp fabrics in lace machines, by applying warps of yarn or thread, previously printed with ornamental patterns or designs. Secondly,-the mode of manufacturing looped warp fabrics in lace machines, by applying longitudinal warp-threads or yarns, previously printed with ornamental patterns or designs, as inlaid threads or yarns. Thirdly,― the mode of manufacturing looped warp fabrics in lace machines, by introducing threads or yarns, previously printed with ornamental patterns or devices thereon, transversely of such fabrics. Fourthly, -the mode of manufacturing looped warp fabrics in lace machines, made with threads or yarns, previously printed, by introducing unprinted threads or yarns, longitudinally or transversely into the fabrics in the progress of their manufacture. And, Fifthly, the mode of manufacturing fabrics in twist lace machines, by applying threads or yarns, previously printed with patterns or devices, as warp-threads or bobbinthreads. [Inrolled in the Inrolment Office, March 1843.]

TO WILLIAM COLEY JONES, of Vauxhall-walk, in the parish of Lambeth, practical chemist, for improvements in treating or operating upon a certain unctuous substance, in order to obtain products therefrom, for the manufacture of candles and other purposes.-[Sealed 8th November, 1842.] THE unctuous substance, above alluded to, is cocoa-nut