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Varieties as far down the chest as the length of one of the roc line there must be a piece of flat wood for the rocket Varieties
of Con- kets with its cap on. In this top, make as many square to strike against, or its force will cut the line. Let the of Cona struction. or round holes to receive the rocket sticks as there are line be well soaped, and the hole in the swivel
very to be rockets ; but let the distance between them be smooth. sufficient for the rockets to stand without touching one To live rockets may be fixed a great variety of fi- Diferent another ; then from one hole to another cut a groove gures, such as flying dragons, Mercuries, ships, &c.; decoralarge enough for a quick match to lie in ; the top being or they may be made to run on the line like a wheel, Lions for thus fixed, put in the bottom, at about one foot and a which is done in this manner. Have a flat swivel nadé line ree
. half distance from the bottom of the chest, in this bot very exactly, and on it tie two rockets obliquely one on tom must be az many holes as in the top, and all to cor each side, which will make it turn round as it
goes, and respond: but these holes need not be so large as those form a circle of fire ; the charge for these rockets should in the top:
be a little weaker than common. If you would show To
prepare the chest, a quick match must be laid in two dragons fighting, get two swivels made square, and all the grooves, from hole to hole: then take some sky on each tie three rockets together on the under side ; rockets, and rub them in the mouth with wet meal then have two flying dragons made of tin, and fix one of powder, and put a bit of match up the cavity of each ; them on the top of each swivel, so as to stand upright; which match must be long enough to hang a little be in the mouth of each dragon put a small case of comlow the mouth of the rocket. The rockets and chest mon fire, and another at the end of the tail ; put two being prepared according to the above directions, put or three port-fires, of a strong charge, on one side of the sticks of the rockets through the holes in the top their bodies, to show them. This done, put them on and bottom of the chest, so that their mouths may rest the line, one at each end; but let there be a swivel in on the quick-match in the grooves: by which all the the middle of the line to keep the dragons from strikrockets will be fired at once ; for by giving fire to any ing together : before firing the rockets, light the cases part of the match, it will communicate to all the roc on the dragons; and if care be taken in firing both at kets in an instant. As it would be rather troublesomne the same time, they will meet in the middle of the line, to direct the sticks from the top to the proper holes in and seem to fight. Then they will run back and return the bottom, it will be necessary to have a small door in with great violence, which will have a very pleasing efone of the sides, through which, when opened, you fect. The line for these rockets must be very long, or may see how to place the sticks. Flights of rockets they will strike too hard together. being seldom set off at the beginning of any fire-works, Cases for Chinese flyers may be made of different Cases for they are in danger of being fired by the sparks from sizes, from one to eight ounces; they must be made thick Chinese wheels, &c.; therefore, to preserve them, a cover should of paper, and eight interior diameters long; they are fjers. be made to fit on the chest, and the door in the side rolled in the same manner as tourbillons, with a straight kept shut.
pasted edge, and pinched close at one end. The method Line Line-rockets are made and rammed as the sky-rockets, of filling them is, the case being put in a mould, whose rockets.
but have no heads, and the cases must be cut close to the cylinder, or foot, must be flat at top without a nipple, clay: they are sometimes made with six or seven chan fill it within half a diameter of the middle; then ram ges, but in general not more than four or five. The in half a diameter of clay, on that as much composition method of managing these rockets is the following : as before, on which drive balf a diameter of clay; then First, have a piece of light wood, the length of one of pinch the case close, and drive it down flat: after this the rockets turned round about two inches and a half dia is done, bore a hole exactly through the centre of the meter, with a hole through the middle lengthwise, large clay in the middle; then in the opposite sides, at both enough for the line to go easily through ; if four chan ends, make a vent; and in that side intended to be fired ges are intended, have four grooves cut in the swivel, first make a small hole to the composition near the clay one opposite the other, in which to lay the rockets. in the middle, from which carry a quick-match, cover
The mouths of the rockets being rubbed with wet ed with a single paper, to the vent at the other end; meal-powder, lay them in the grooves head to tail, then, when the charge is burnt on one side, it will, by and tie them fast; from the tail of the first rocket carry means of the quick-match, communicate to the charge a leader to the mouth of the second, and from the se on the other (which may be of a different sort). The cond to the third, and so on to as many as there are flyers being thus made, put an iron pin, that must be on the swivel, making every leader very secure; but in fixed in the work on wbich they are to be fired, and on fixing these pipes, take care that the quick-match does which they are to run, through the hole in the middle; not enter the bores of the rockets: the rockets being on the end of this pin must be a not to keep the flyer fixed on the swivel and ready to be fired, have a line from running off. If they are to turn back again after 100 yards long, stretched and fixed up tight, at any they are burnt, make both the vents at the ends on the height from the ground; but be sure to place it hori. same side, which will alter its course the contrary way. zontally: this length of line will do for half-pound Table rockets are designed merely to show the truth Table rockets ; but if larger, the line must be longer. Be of driving, and the judgment of a fire-worker ; they rockela fore you put up the line, put one end of it through the having no other effect, when fired, than spinning round swivel ; and when you fire the line rocket, let the mouth in the same place where they begin, till they are burnt of that rocket which is first fired face that end of the out, and showing nothing more than an horizontal circle line where you stand ; then the first rocket will carry of fire. the rest to the other end of the line, and the second will The method of making these rockets is,-Have a cone bring them back; and so they will run out and in ac turned out of bard wood two inches and a half in dia. cording to the number of rockets : at each end of the meter, and as much high ; round the base of it drive a
Varieties line; on this line fix four spokes, each two inches long, phur moistened with a small quantity of petroleum oil, Varieties
of Con so as to stand one opposite the other; then fill four nine- and two ounces of charcoal ; and in order that these of Construction, inch one pound cases with any strong composition, reeds or canes may catch fire sooner, and with more fa-struction.
within two inches of the top: these cases are made like cility, they must be charged at the lower ends, which
powder moistened in the same manner with petroleum
ounces of gunpowder, four ounces of saltpetre, two
ning rockets, or paper petards, and a quantity of fiery
must be choked at unequal heights, that they may 94 Aerial Fireworks called aerial globes or bombs consist of perform their effect at different times. glubes or a spherical case made of strong paper, or of wood, pre These globes may be constructed in various other bombs. pared as will be immediately described, and thrown from ways,
which it would be tedious here to enumerate. We a mortar commonly made of pasteboard, with a copper shall only observe, that when loaded they must be well chamber to contain the charge, such as AB, fig. 33. covered at the top; they must be wrapped up in a piece This small mortar must be made of light wood, or of of cloth dipped in glue, and a piece of woollen cloth pa per pasted together, and rolled up in the form of a must be tied round them, so as to cover the hole which cylinder, or truncated cone, the bottom excepted; contains the match.
95 which, as already said, must be of wood. The cham Fuzes for air balloons are sometimes turned ont of Fuzes for ber for the powder AC must be pierced obliquely, with dry beech, with a cup at top to hold the quick-match,
globes or a small gimlet, as seen at BC; so that the aperture B or other firing material; but if made with pasted paper, corresponding to the aperture of the metal mortar, in they will do as well: the diameter of the former for which this paper mortar must be placed when the globe fuzes for cochorn balloons must be half an inch; for a is fired, the fire applied to the latter may be communica- royal fuze, five-eighths of an inch; for an eight inch ted to the powder which is at the bottom of the cham fuze, three-fourths of an inch ; and for a ten inch fuze, ber AC, immediately
below the globe. By these means seven-eighths of an inch. Having rolled the cases, pinch the globe will catch fire and make an agreeable noise and tie them almost close at one end : then drive them as it rises into the air; but it would not succeed so down, and let them dry. Before beginning to fill them, well if any vacuity were left between the powder and mark on the outside of the case the length of the charge globe.
required, allowing for the thickness of the bottom; and
over it a little meal-powder, and it will be ready to be
To make Tourbillons. Having filled some cases with Tourbil-
4 A 2
Varielies should be half an inch broad at the middle, and run communicate to all the mortars at once by means of varictics
of Con- a little narrower to the ends: these sticks must have the leaders. For mortars of 8, 9, or 10 inches diame- of Construction their ends turned upwards, so that the cases may turn ter, the serpents should be made in one and two ounce struction,
horizontally on their centres : at the opposite sides of cases, six or seven inches long, and fired by a leader
equal to the exterior diameter of the mortar, and draw
rolled pretty thick. They are usually made tbree or Aigrettes. Mortars to throw aigrettes are generally made of four inches diameter, and four diameters long; and
pasteboard, of the same thickness as balloon mortars, pinched with a neck at one end, like common cases.
of reports. But if the mortars are very strong, and Mortars thas prepared are called a nest of serpents, as will bear a sufficient charge to throw the saucissons very represented by fig. 37. When these mortars are to be bigb, you may make three volleys of reports, by dividfired, light the fire pump C, which when consumed willing the number of cases into three parts, and making a 3
Varieties difference in the height of the charge. After they are mouth of the other carry a leader, which should be se- Varieties
of Con- filled, pinch and tie them at top of the charge almost cured with pasted paper. Besides these pipes, it will be of Con-
fire to the upper part of the case, which must be filled paper, to blow off the pipe, that there may be no ob-
loud. Saucissons should be rolled on the wheel, which case must play downwards: instead
Horizontal wheels are often fired two at a time, and
will be enough for the diameter of wheels with six Plate Single ver
CCCCLIV. There are different sorts of vertical wheels; some ba- spokes. Fig. 40. represents a wheel on fire, with the tical
fig. 40. ving their fells of a circular form, others of an hexagonal, first case burning.
octagonal, or decagonal form, or of any number of sides, Spiral wheels, are only double horizontal wheels, and Spiral
Plural of dead-fire composition, which must be very lightly consist of three sets of spokes, placed six at top, six at wheele. driven; you may also make many changes of fire by this bottom, and four in the middle, wbich last must be a method.
little shorter than the rest: let the diameter of the wheel Let the hole in the nave of the wheel be lined with be 10 inches; the cases must be tied on the ends of the brass, and made to turn on a smooth iron spindle. On spokes in grooves cut on purpose, or in pieces of wood the end of this spindle let there be a nut, to screw off nailed on the end of the spokes, with grooves cut in and on; when you have put the wheel on the spindle, them as usual: in clothing these wheels, make the upscrew on the nut, which will keep the wheel from fly per set of cases play obliquely downwards, the bottom ing off. Let the mouth of the first case be a little raised. set obliquely upwards, and the middle set horizontally. See fig. 39. Vertical wheels are made from ten inches In placing the leaders, they must be managed so that the to three feet diameter, and the size of the cases must cases may burn thus, viz. first up, then down, then hodiffer accordingly; four-ounce cases will do for wheels rizontal, and so on with the rest. But anotber change of 14 or 16 inchies diameter, which is the proportion may be made, by driving in the end of the eighth case generally used. The best wood for wheels of all sorts two or three ladlesful of slow fire, to burn till the is a light and dry beech.
wheel has stopped its course ; then let the other cases
a pintle, turned out of the same piece as the nave, two gerbe; and let the cases on the spokes be short, and 6]l-
1.Varieties have a hoop planed down very thin and flat; then nail the spindle, at which place there must be a shoulder, to Varieties
of Con- one end of it into the fell of the wheel, and wind it keep the wheel from touching ihe stand : at the top of of Construction. round the three sticks in a spiral line from the wheel to the spindle put the small wheel, and join it to a large struction.
the block at top: on the top of this block fix a case of one with a leader, in order that they may be fired both
top, on which the upper block is to turn, and the whole cross piece at A be four feet long : then from each end 105 weight of the wheel to rest. See fig. 41.
of this piece draw a line to D; then make the other Double Double spiral wheel.- For this wheel the block, or cross pieces so long as to come within those lines. The spiral wheel.
nave, must be as long as the height of the worms, or top piece D may be of any length, so as to hold the spiral lines, but must be made very thin, and as light as .cases, at a little distance from each other; all the cross possible. In this block must be fixed several spokes, pieces are fixed horizontally, and supported by brackets; which must diminish in length, from the wheel to the the bottom cross piece should be about one foot six top, so as not to exceed the surface of a cone of the same inches broad in the middle, the second one foot, the height. To the ends of these spokes nail the worms, third nine inches, and the top piece four inches: the which must cross each other several times : clothe these cases may be made of any length, but must be filled wornis with illuminations, the same as those on the single with a brilliant charge. On the edges of the cross wheels ; but the horizontal wheel you may clothe as pieces must be nailed bits of wood, with a groove cut
At top of the worm place a case of spur-fire, in each piece, large enough for a case to lie in. These or an amber light, see fig. 42. This figure is shown bits of wood are fixed so as to incline downwards, and 106 without leaders, to prevent a confusion of lines. that the fire from one tier of cases may play over that of Balloon
Balloon wheels are made to turn horizontally: they the other. All the cases being tied fast on, carry leadwheels.
must be made two feet diameter, without any spokes; ers from one to the other; and let there be a pipe hung and very strong, with
number of sides. On the top from the mouth of one of the cases, covered at the end of a wheel range and fix io pots, three inches diameter with a single paper, which you burn to fire the cascade. and seven inches high each, as many of these as there The Fire I'ree.-To make a fire tree, as shown by Firo utic. are cases on the wheel : near the bottom of each pot fig. 44. you must first have a piece of wood six feet long, make a small vent; into each of these vents carry a and three inches square ; then at E, vine inches from leader from the tail of each case ; load some of the pots the top, make a hole in the front, and in each side; or, with stars, and some with serpents, crackers, &c. As instead of holes, you may fix short pegs, to fit the inside the wheels turn, the pots will successively be fired, and
of the cases.
At F, nine inches from E, fix tlısee more throw into the air a great variety of fires.
pegs ; at G, one foot nine inches from F, fix three pegs;
nave fix eight spokes, with a hole in the end of each, but all the other pegs must incline upwards, that the
wards; below this, fix three more pieces of the sanie