Improved Portable Steam Engine, with Multitubular Boiler.

This Engine is simple in construction, all the working parts being outside the Boiler, they are easy of access, and the Engines can be workerd by any labourer of ordinary intelligence. The Boiler is constructed on the most approved locomotive principle; the Fire-box is made entirely of Lowmoor Iron, and is fitted with Tubes, so arranged as to obtain the maximum amount of heating surface in the least possible space, securing economy in the consumption of fuel, combined with lightness, compactness and durability. The Boiler is covered with hair-felt, over which is placed a wood lagging; and this is again surrounded by sheet-iron, plates.

The Engine is mounted on either wood or iron travelling wheels, with patent axles, locking-plate, and shafts. The wood wheels are preferable for Engines having much travelling on bad roads, but iron wheels are most suitable where the removals are not frequent, and are much more durable for tropical climates. Every Engine is thoroughly tested under steam at much above the usual working pressure before leaving the works.

For Exportation it is strongly recommended that all, or a large portion, of the following duplicate parts should be sent out with each Engine, i.e, 2 pairs of main shaft brasses, 1 pair of brasses to large end of each Connecting-rod, 1 set of piston-rings and springs, 1 Set of

The prices are for Engines complete, with fly-wheel, governors, steam gauge, food pump, and all necessary valves, and an extra lock-up safety value, gauges, cocks, &c. also waterproof cover, tube-brush, stoking tools, and funnel.

Single Cylinder Portable Engines.

Double Cylinder Portable Engines.