This piece is represented by [Fig. 7th], and is thus made; have a block made eight inches diameter, in this block screw six iron spokes, which must serve for spindles for the spiral wheels, these wheels are made as usual, each one foot six inches diameter and three foot in height; the spindles must be long enough to keep the wheels four or five inches from one another; at the end of each spindle must be a screw nut, on which the wheels that hang downwards will run, and on the spindles which stand upwards must be a shoulder, for the blocks of the wheels to run on.
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The projected star wheel, must turn on the same spindle on which the large block is fixed, this spindle must be long enough to allow the star wheel to project a little before the spiral wheels; the exterior diameter of the star wheel, must be three feet five inches, on this wheel fix three circles of iron wire, and on them port-fires; on the block place a transparent star, or a large five pointed brilliant star, the cases on this wheel may burn four at once, as it will contain near twice the number of one of the spiral wheels; the cases on the spiral wheels, must be placed parallel to their fells, and burn two at a time.
A New Figure Piece Illuminated with Five Pointed Stars.
The construction of this piece is very easy, as shewn by figure 8, whose diameter from B to C, is eight feet, and from D to E, two feet, the vertical wheel in the center, must be one foot diameter, and consist of six four ounce cases of different coloured charge, which cases must burn double; on the frames of this piece, six five pointed brilliant or blue stars, rammed four inches with composition, let the space between each star be eight inches; at each point of this piece, fix a gerbe or case of chinese fire; when this piece is to be fired let the gerbes, stars, and wheel be lighted at the same time.
The Star Wheel Illuminated.
This beautiful new invented piece, is shewn in [Plate 8], fig. 9, its exterior fell is made of wood, three feet six inches or four feet diameter, within this fell, form with iron wire, three circles, one less than the other, so that the diameter of the least may be about ten inches; place the port-fires on these fells, with their mouths inclining outwards, and the port-fires on the points of the star, with their mouths projecting in front; let the exterior fell be clothed with four ounce cases of grey charge, these cases must burn four at a time, and be lighted at the same time as the illuminations.
Pyramid of Flower-pots.
[Fig. 10], represents this curious piece, which must be made thus; let the distance from A to B, be six feet, and from one rail to the other two; on the bottom rail, fix five paper mortars, each three inches and a half diameter, these mortars load with serpents, crackers, stars, &c.
In the center of each mortar fix a case of spur fire; on the second rail fix four mortars, so as to stand exactly in the middle of the intervals of them on the bottom rail; on the third rail place three mortars; on the fourth two; and on the top of the posts one; the bottom rail must be six feet in length; all the mortars must incline a little forwards, that they may easily discharge themselves, and the spur-fires rammed exactly alike that the mortars may all be fired at the same time, having prepared your pyramid according to the preceeding directions, carry pipes of communication, from one spur-fire to the other.