South Central Galleries.]

Class 10.

and SUEGICAX, INSTRUMENTS.

65

327 Towns, ~W. 19 Stangate St. Lambeth, Inv.—Spiritmeter on a new principle.

328 Haggard, W. Bank of England, Inv.—A doubleprotractor, three inches square.

329 Sinclair & Hockley, 42 Gerard St. Soho. Des. andManu.—Artificial teeth, &c.

330 Best, T. Oldham.—Measuring and dividing ma-chine. Rules, marked and divided by the machine.

331 Griffith, J. Darley Parsonage, near Derby, Des.—Standard barometer, manufactured by J. Davis, Derby.

332 Yeates, G. 2 Grafton St. Dublin, part Des. andManu.—Barometers, theodolites, simple and effective air-pump, improved prismatic compasses, optic square, spec-tacles, &c.

333 De Grave, Short, & Fanner, 59 St. Martin’s-le-Grand, Manu.—Assay balances and weights. Hydrostaticbalances and weights. Diamond balances. Weights andmeasures, &c.

4 334 Oertling, L. 13 Store St. Bedford Sq. Manu.—Che-mical and other balances of delicate construction.

335 Brown, S. 6 Marlborough PI. Kennington Cross,Inv.—Patent power-engine and water-meter, and water andspirit meters.

330 Langlands, J. Chesterfield, Inv.—Patent compoundtap with meter.

337 Park, S. H. Kingswood, Wootton-under-Edge,Gloucestershire.—Set of improved spanners, and centripetalpunch and gauge, to find the centre in round or square iron.

338 Sang, J. Kirkaldy, Scotland, Inv. and Manu.—Planometer, or self-acting calculator of surface.

339 Bridges, G. Hampton Wick, Kingston, Inv.—Instrument for ascertaining distances of objects, by day ornight.

340 Rooker, J. & A. 26 East St. Foundling, Manu.—Sliding rule of involution. Specimen of hand dividing.

341 Marriott, M. Montpelier Sq. Inv.—Delicate balancefor chemical analysis, made of pine.

342 Ross, W. Strathsteven, Golspie, Sutherland, Inv.—Graduator. An instrument for the approximate determina-tion of heights and distances of objects; and it shows thetime of day by the sun in any part of the globe.

343 William, B. H. Waterfoot, Ireland.—An instru-ment designed to take angles and bearings in the field, andtransfer them mechanically to paper without reading off.

344 Dover, J. 14 Little New St. Prod.—Delicatebalance for chemical analysis and assaying.

348 Donns, G. 37 St. Alban’s St. Lambeth.—Universalspirit level, for all kinds of machinery.

347 Cox, G. 5 Barbican, Manu.—Instrument for ascer-taining correct time. The periphan, for the study of astro-nomy, &c. Beam draining-levels and angle metre.

348 Hardy, J. 5 Wellington ltd. St. John’s Wood, Inv.--Metrograph, an instrument to enable a person to draw any°bject from nature, by actual measurement.

349 Barrett, R. M. 4 Jamaica Ter. Limebouse, Manu.

Improved lunar sextants. Plain sextant. Improved brass

quadrant, divided to half minutes.

350 Taylor, J. 104 Minories, Manu.—Sextant for mea-suring angular distances between the heavenly bodies.

351 Heath, G. Krith, Kent.—Solid bell-metal ivory-ar ched sextant, divided to ten seconds. Improved actionMagnifier. Improved spring hollow leg. Improved ivory-ar ch metal quadrant.

352 Williams, W. 47 Johnson St. Somers Town, Inv.

Manu.—Instrument to draw lines radiating from a

centre.

353 Adcock, J. 4 Marlborough Rd. Dalston, Inv.—•^odel of a new machine for measuring and mapping, &c.^354 Baker, R. Glastonbury, Somersetshire, Inv.—^odel of an instrument called the Periphan, by which the

ordinary solar and lunar phenomena are elucidated in aclear, simple, and unique manner.

355 Graham, J. High Row, Darlington, Durham, Inv.—A rule for showing the circumference of a circle; also theside of the square equal in area to a circle whose diameteror circumference is given.

356 Cameron, P. 87 London St. Glasgow, Inv.—Azi-muth compass. Engineer’s improved indicating level.Mathematical and nautical slide rule. Improved thermo-meter, steam and vacuum gauge.

357 Macdonald, Dr. 4 Coburg PL Upper KenningtonLane, Inv.—Instrument to facilitate finding the longitudeat sea.

358 Siebe, A. 5 Denmark Street, Soho, Inv. and Manu.—Dial weighing-machine, with measuring apparatus. Steam-boiler feeder, with patent joint.

359 Smith, W. 6 Wyatt St. Maidstone.—Early-callingmachine.

381 Miller, J. Jun. 30 Thomas St. Woolwich, Inv.—Miller’s radiator for drawing lines to a point or centre.

362 Liddell, J. J. Edinburgh, Des. and Manu.—Spiritlevels used in draining, road Levelling, &c.

383 Thompson, J. 4 Wellington PI. West India DockRd. Limehouse, Inv.—Trigonometrical machine for markingout clothing.

384 Adcock, J. Teignmouth, Inv. and Des.—Registeredscale of the diameter arid quadrant of the circle, for mea-suring standing timber. Drawing of improved paddle-wheel. Drawings of an invention for determining and regis-tering the courses of the wind, of a new water-wheel, &c.

385 Gardner & Co. 21 Buchanan St. Glasgow.—Opti-cal instruments.

860 Young & Son, 5 Bear St. and 46 Cranbourn St. Inv.and Manu.—A seat scale weighing machine.

367 Blytii, R 2 Cheltenham PI. Westminster Rd. Lam-beth.—Patent indicating level, for carpenters, masons, &c.

368 Ackland, W. 19 Dorset St. Portman Sq. Inv.—Machine for the graduation of hydro-meters, thermome-ters, &c. Scales for an hydrometer, showing specific gra-vities and per centages.

369 Besant, —, Wiltshire.—Music stands.

371 Nunn, R. M. Wexford, Ireland, Inv.—Hydrometer,for ascertaining the specific gravity of liquids from 0*600to 2*000. Double reverse-action pump. Door-spring, &c.

372 Blunt, II. Shrewsbury.—Model of a lunar crater(Eratosthenes), diameter of the crater about 28 miles.

376 Hay, W. 113 Union St. Aberdeen, Des.—Footgauge, by which the measurements are taken at once.

377 Fox, R. W. Falmouth, Inv.—Fox’s magnetizedbalance, weighing to the ten thousandth part of a gram.

378 Yates, Emma Jane, 9 Portland PI. WandsworthRd. Inv.—An instrument for the approximate determinationof the problem of squaring the circle.

379 Dyer, H. Gt. Western Railway, Hungerford, Inv.—Registered office index and tablet memento, intended toassist the memory.

382 Tolputt, Vf. B. Folkestone. — Instrument to teachthe blind to write.

383 Darnell, J. 3 King Edward Ter. Liverpool Rd.Islington, Inv.—Portable house alarm, for the detection offire and robbery. Universal sun-dial.

385 Davidson, A. Nairne.—Tree measurer, to take thegirth of a tree.

386 Weake, R. Princes Rd. Plumstead Common.—Afire annihilator.

387 Wertheimer, D. J. 5 Charing Cross, Pat. andManu.—Calculating machine, adapted to Indian, American,Russian, Prussian, Brazilian, Portuguese, Neapolitan, Ro-man, French, Turkish, Chinese, and English money, &c.