making the same applicable to the evaporating and boiling of fluids for certain purposes.-Sealed 27th August-6 months, for inrolment of specification.

To Benjamin Aingworth, of the parish of Birmingham, in the county of Warwick, button maker, for his invention of an improvement in the making and constructing of buttons.-30th August-6 months.

To Jean Jaques Jelquier of Castle Street, Leicester Square, in the county of Middlesex, merchant, in conse quence of a communication made to him by a certain foreigner residing abroad, he is in possession of certain improvements in the machinery for making paper, which he denominates Xeranothlipte."-31st of August-6 months.

To Harrison Gray Dyar, of Panton Square, in the county of Middlesex, Gentleman, for his invention of an improvement in tunnelling, or method of executing subterraneous excavations.-5th September-6 months.

To George Forrester, of Vauxhall Foundry, Liverpool, in the county of Lancaster, civil engineer, for his invention of certain improvements in wheels for carriages and machinery, which improvements are applicable to other purposes.-5th September-6 months.

To William Bickford, of Tuckingmill in the county of Cornwall, leather seller, for his invention of an instrument for igniting gunpowder, when used in the operation of blasting rocks, and in mining.-6th September— 6 months.

To James Neville, of Great Dover Road, in the county of Surrey, engineer, for his having invented an improved apparatus for clarifying water and fluids.-9th September-6 months.

To George Holworthy Palmer, of Manchester Street, Gray's Inn Road, civil engineer, for his invention of

certain improvements in the steam engine and boiler; and apparatus, or machinery connected therewith, applicable to propelling vessels, carriages, and other purposes.-16th September-6 months.

To John Potts, Richard Oliver, and William Wainwright Potts, all of New Mills, in the county of Derby, engravers to calico printers, and co-partners, for their having invented an improved method or process of obtaining impressions from engravings in various colours, and applying the same to earthenware porcelain china, glass, and other similar substances.-17th September6 months.

To Sampson Mordan, of Castle Street, East Finsbury, in the county of Middlesex, engineer, and Willian Brockedon of Devonshire Street, Queen Square, of the same county, Esqs. for their having invented certain improvements in the construction of writing pens and penholders, and in the method of using them.-20th September2 months.

To Mark Cosnahau, of the Isle of Man, Esq. for his having invented certain improvements in apparatus, modes, or process for converting sea or salt water, and also other brackish turbid or impure waters, into purified or fresh water, which apparatus, modes, or processes or parts thereof may be applied to other purposes.-20th September-6 months.

THE

London

JOURNAL OF ARTS AND SCIENCES.

No. XLIV.

[SECOND SERIES.]

Recent Patents.

TO FRANCIS MOLINEUX, of Hampstead, in the county of Middlesex, gentleman, and WILLIAM BUNDY, of Kentish Town, in the same county, machanist, for their invention of improvements in machinery for spinning and twisting silk and wool; and for roving, spinning, and twisting cotton, flax, hemp, and other fibrous substances.-[Sealed 21st September, 1830.]

THIS invention appears to consist of several modifications of machinery, all of which are designed to enable yarns of cotton, silk, or other fibrous substances, to wind on to bobbins simultaneously with the operation of spinning the material into yarns. The Patentees have described the invention by reference to their drawing, of which the following is for the most part a literal copy:

Plate IV. fig. 1, 1 A, and 1 B, and 2, represent our improved arrangement of the spindle and flyer, applicable in the process of spinning various fibrous materials, which

VOL. VIII, SECOND SERIES.

H

improvement combines in its operation, the soundness and firmness of the throstle, with the fineness and delicacy of the mule.

Figures 1, and 1 A, represent a spindle, nearly similar to a throstle spindle; a, is a disk, or plate of iron, or other suitable material, fixed on the spindle at a suitable distance from the bobbin b, to rest on, which may be made of wood, or any other proper substance; c, c, c, represent a flyer inverted in position, and which may be made of any suitable dimensions; d, d, represent the flanches of a collar attached to the flyer, through which the spindle is allowed to pass, so as to admit of its revolving freely; e, e, represent two tempering springs of steel, which are so placed as to bear against the collar d, d, with a pressure, which may be regulated by the action of the screws h, h. The tempering springs e, e, are attached to the traversing rail f, f, by a plate of iron, as seen at i, by which means the flyer may be elevated and depressed by any of the ordinary modes of producing a traversing motion on the spindle, for the purpose of regularly filling the bobbin as the operation proceeds; g, is a pulley of the usual form, by which the spindle and flyer are put in motion.

Figure 1 B, represents an edge and sectional view of the tempering springs, by which their application is more distinctly seen the same letters represent the same things as in figs. 1, and 1 A. In this our improved arrangement of the spindle and flyer, the tempering springs e, e, being made to press more or less forcibly against the collar or flanches of the flyer d, d, the speed or motion of the flyer is proportionably retarded, and is thus adjusted or tempered to suit the degree of retardation required for finer or coarser yarns; this object may either be effected by springs in the manner above described, or the retardation may be produced by any other convenient method of applying friction to the collar of the flyer. In this our improved arrangement the bobbin is fixed on the spindle, and is moved with the same speed as the spindle, which is essential in our improved method of spinning; the mode of operation above described possesses advantages over all methods heretofore in practice for adjusting the speed, so as to admit of the yarn spun being coiled or wrapped on the bobbin, without any injurious tension or strain. To effect this important object, it is only necessary to