Case shot, formerly, consisted of all kinds of old iron, stones, musquet balls, nails, &c.
Tubes, in artillery are used in quick firing. They are made of tin: their diameter is ²⁄₁₀ths of an inch, being just sufficient to enter into the vent of the piece; about 6 inches long, with a cap above, and cut slanting below, in the form of a pen; the point is strengthened with some solder, that it may pierce the cartridge without bending. Through this tube is drawn a quick-match, the cap being fitted with mealed powder, moistened with spirits of wine. To prevent the mealed powder from falling out by carriage, a cap of paper or flannel, steeped in spirits of wine, is tied over it.
Flambeaux, a kind of lighted torch, used in the artillery upon a march, or the park, &c.
Formers, are cylinders of wood, of different sizes and dimensions, used in the laboratory, to drive the composition of fuzes and rockets.
Funnels, are of various sorts, used to pour the powder into shells, and the composition into fuses, and rocket-cases.
Fire-ship, a vessel filled with combustible materials, and fitted with grappling irons, to hook, and set fire to the enemy’s ships in battle, &c.
From the bulk head at the fore castle to a bulk head to be raised behind the main chains, on each side and across the ship at the bulk heads, is fixed, close to the ship’s sides, a double row of troughs, 2 feet distance from each other, with cross troughs quite round, at about 2¹⁄₂ distance; which are mortised into the others. The cross troughs lead to the sides of the ship, to the barrels and to the port holes, to give fire both to the barrels and to the chambers, to blow open the ports; and the side troughs serve to communicate the fire all along the ship and the cross troughs.
The timbers of which the troughs are made, are about 5 inches square; the depth of the troughs, half their thickness; and they are supported by cross pieces at every 2 or 3 yards, nailed to the timbers of the ship, and to the wood work which incloses the fore and main masts. The decks and troughs are all well paved with melted rosin.
On each side of the ship 6 small port holes are cut, from 15 to 18 inches large, the ports opening downwards, and are close caulked up. Against each port is fixed an iron chamber, which, at the time of firing the ship, blows open the ports, and lets out the fire. At the main and fore chains, on each side, a wooden funnel is fixed over a fire barrel, and comes through a scuttle in the deck, up to the shrouds, to set them on fire. Both funnels and scuttles must be stopped with plugs, and have sail cloth or canvas nailed close over them, to prevent any accident happening that way, by fire, to the combustibles below.
The port holes, funnels, and scuttles, not only serve to give the fire a free passage to the outside and upper parts of the ship, and her rigging, but also for the inward air (otherwise confined) to expand itself, and push through those holes at the time of the combustibles being on fire, and prevent the blowing up of the decks, which otherwise must of course happen, from such a sudden and violent rarefaction of the air as will then be produced.