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To John Ruthven, of Edinburgh, for his invention of improvements in the formation of rails or rods for making railways, and in the method of fixing or joining them.-Sealed 13th October-6 months for inrolment.

To Charles Pierre Devaux, of Fenchurch-street, in the city of London, merchant, for a new or improved apparatus for preventing the explosion of boilers or generators of steam, being a communication from a foreigner residing abroad.Sealed 13th October-6 months for inrolment.

To John Joseph Charles Sheridan, of Peckham, in the county of Surrey, chemist, for his invention of certain improvements in the several processes of saccharine, vinous, and acetous fermentation.-Sealed 20th October-6 months for inrolment.

To William Bridges Adams, of Brecknock-crescent, Camden-town, in the county of Middlesex. coach-maker, for his invention of certain improvements in wheel carriages.Sealed 20th October-6 months for inrolment.

To Christopher Nickels, of Guildford-street, Lambeth, in the county of Surrey, manufacturer of caoutchouc, for improvements in preparing and manufacturing caoutchouc, applicable to various useful purposes, being partly a communication from a foreigner residing abroad.-Sealed 24th Oc tober-6 months for inrolment.

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THE

London

JOURNAL AND REPERTORY

OF

Arts, Sciences, and Manufactures.

CONJOINED SERIES.

No. LVII.

Recent Patents.

TO THOMAS ROBERT SEWELL, of Carrington, in the parish of Basford, in the county of Nottingham, lacemanufacturer, for his invention of certain improvements in machinery for making lace, commonly called bobbinnet.—[Sealed 2nd December, 1835.]

THESE improvements in machinery for making lace, commonly called bobbin-net, apply to that particular class of machinery known under the description "double-tier circular bolt, or circular comb machinery, worked on the locker-bar principle." The first object proposed to be effected by these improvements, is the making of breadths, that is, the production of several narrow widths of net in one broad sheet, the selvages of which are connected together by whipping threads; the second object is the working of figures or ornamental devices in the fabric, in conjunction with the production of the net.

VOL. IX.

S

In the words of the Patentee, "These improvements are principally adapted to that peculiar construction of circular bolt, or circular comb machinery, usually denominated Sewell's-rolling locker principle; and for their better illustration, I have, in the accompanying drawings, in the first place, exhibited the arrangement of the operative parts of a machine on that construction, and will proceed to describe the details.

Fig. 1, Plate VII., is a front elevation one half of the machine, in the form and according to the arrangement in which I originally constructed it for the making of plain bobbin net. Fig. 2, is a section taken vertically through the middle of the machine, looking towards the other end.

The machinery is mounted in two end frames, or standards A, A, braced together by the longitudinal bars and frames, B, B, B. The warp beam is shown at c, and the work beam at D. The front and back comb bars are marked E, E, the guide bars F, F, the point bars G, G, the work bar H, and the locker bars 1, 1. The rigger, or pulley K, driven by a strap from any first mover, is fixed on the outer end of a longitudinal shaft L, extending about half way along in front of the machine; which shaft also carries a toothed wheel м, taking into another wheel N, on the main longitudinal shaft o, o, by which the cams and levers are actuated that work the operative parts of the machinery. Bobbins and carriages a, a, having been inserted in two tiers in the combs b, b, as shown in fig. 2, and the warp threads conducted through the guides c, c, and with the bobbin threads carried up to the work beam D, in the ordinary way, the machine may be considered ready for performing its work. Rotary motion being now given, in the manner above described, to the main shaft o, o, the excentric groove or heart cam P, on the face or disc of the wheel N, as it revolves, will act

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