Kingdom.] RAILWAY AND MARINE MECHANISM. 253

North Areas A. B. 10 to 34 ; C. D. E. 1 to 10, & 19 to 33 ; F. 1 to 32; G. II. 1 to 13, & 19 to 26.

Fig. 1.

Cotton , sack, or bale weighing machine, on wheels(see fig. 2).

Craig’s Weighing Machines .

, Library machine for weighing, also for measuring the

stature.

Chimney-arch and smoke-damper, to be applied in thels t construction of chimneys. Its use is to allow thec °ld air of the apartment to mingle regularly with the

heated air in the chimney, and prevent smoke. The damperis worked by a small rod at the back of the grate, and canbe regulated at pleasure. When shut, it prevents alldown-blasts, and is serviceable when the chimney is onfire. It can be removed when the chimney is to becleaned, and easily replaced.

A smoke-damper, to be applied to chimneys alreadybuilt. _

777 Yates, William, Bromley, Middlesex —Inventor.An indicator, for registering and detecting change of

speed in steam-engines or machinery.

778 Goodfellow, James, 4 James Street West, Levonport

—Inventor.

Gauge for showing the height of water in steam-boilers,talc being used instead of glass. No change of tempera-ture will cause the talc to break.

779 Howe, George, 119 Great Guildford St., Southwark —

Inventor and Manufacturer.

Registered transparent water-gauge, for showing theexact level of the water in steam-boilers, consisting of aglass tube fixed in the brass sockets, with vulcanizedIndia-rubber rings, to prevent it from being broken bythe expansion or contraction of the metal; when the tubeis broken by accident, it can be tightly replaced in a fewminutes. _

780 Mediiurst, Thomas, 465 Oxford St.- — Manufacturer.Improved portable compound lever weighing machine.

782 Donbavand, W.j 95 Great Ancoats Street, Manchester—Manufacturer.

Bright steel box and scale-beam, mounted upon a brasspillar.

784 Pooley, Henry, Liverpool —Inventor andManufacturer.

Patent locomotive engine weighing tables, which givethe gross weight, and also the impact upon the rails ofeach pair of wheels and of each wheel separately. _ Theiruse is to enable the superintending engineer to adjust thesprings of engines so as to obtain the proper amount oftractive power which is consistent with safety from ten-dency to run off the line at curves.

Drawing, in plan and sections, showing the construction,and mode of erecting the same.

Fig. 1.

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Pooley s Locomotive Engine Weighing Tables.