DOI Page / Citation link:
https://doi.org/10.11588/diglit.19575#0225
2.04- P Y R
fallen it to the neck of the rocket ; or e.lfe in a bladder full of
wind .; which, inftead of dipping into meited wax, do over with
a mixture of four parts oflinfeed oil, two parts of bole ammo-
niac, one part of white lead, and half a part of afhes.
Along with the reports of the rockets may be mixed certain
fparks and ftars intermixed with meal and coined powder; to this
is fixed an iron or wooden tube B, fig. 9 ; from each end of this
goes another fmaller tube CD, all having communication with
one another, alio with the compofition and the liars. Thefe are
filled with meal powder, covered with paper dipped in wax or
pitch; and, acounterpoife A being fixed below, it is fired. As
ibon as the compofition is burnt down to the cap, it is conveyed
through the fmall tubes to the lower part, where,, letting out the
partition, it dlfperfes the powder, ffars, &c. into the air.
Charges for water-rockets. Meal powder fix ounces, rofin one
ounce, charcoal three quarters of an ounce, faltpetre one ounce,
corn-powder one ounce. Or, meal powder two pounds, faltr
petre four pounds, brimftone one pound, charcoal four ounces,
coarfe coal three ounces, tanners dull two ounces and an half,
faw-duft two ounces, glafs powders one ounce, finking lead one
ounce and three quarters for one-pound rockets.
Charge for water-crackers. Meal powder four ounces, falt-
petre five pounds, brimftone two pounds and three quarters, tan-
ners dull: one pound and an half, charcoal one pound, coarfe
coals two pounds and three quarters, glafs dull four ounces, lead
-three quarters of an ounce.
Charge for tumbling water-crackers. Meal powder three quar-
ters of a pound, charcoal four ounces, for one and an half or
jtwo pound rockets.
Charge for water-cats. Meal-powder two parts, faltpetre four
parts, brimftone one part, coarfe coals two parts, faw-duft two
parts, and antimony three parts, moiftened with linfeed oil.
Of rocket-fiers, and the manner of charging them. Thefe are
oftwo forts., namely, the fingle and double ones : The latter are
made in the following manner :
Have a nave or button turned, the dimenfion of three inches,
together with two knots upon it, perpendicular one againft the
other, of an inch and an half long, and fo thick that both rocket-
cafes may fit over them ; there muft alfo'be a hole of the third of
an inch in the center of the nave, for the iron pin to go through,
on which it is to fly. After this take two rocket-cafes of equal
dimenfions, which are choked quite clofe at the neck, and
glued : Ram in the charge fo far as to leave only room to fix
them on the two knobs upon the nave. This done, bore into
both rockets, near the clofed up necks, fmall touch-holes; and
one more near the pun, in that which is to burn firft : From this
hole
fallen it to the neck of the rocket ; or e.lfe in a bladder full of
wind .; which, inftead of dipping into meited wax, do over with
a mixture of four parts oflinfeed oil, two parts of bole ammo-
niac, one part of white lead, and half a part of afhes.
Along with the reports of the rockets may be mixed certain
fparks and ftars intermixed with meal and coined powder; to this
is fixed an iron or wooden tube B, fig. 9 ; from each end of this
goes another fmaller tube CD, all having communication with
one another, alio with the compofition and the liars. Thefe are
filled with meal powder, covered with paper dipped in wax or
pitch; and, acounterpoife A being fixed below, it is fired. As
ibon as the compofition is burnt down to the cap, it is conveyed
through the fmall tubes to the lower part, where,, letting out the
partition, it dlfperfes the powder, ffars, &c. into the air.
Charges for water-rockets. Meal powder fix ounces, rofin one
ounce, charcoal three quarters of an ounce, faltpetre one ounce,
corn-powder one ounce. Or, meal powder two pounds, faltr
petre four pounds, brimftone one pound, charcoal four ounces,
coarfe coal three ounces, tanners dull two ounces and an half,
faw-duft two ounces, glafs powders one ounce, finking lead one
ounce and three quarters for one-pound rockets.
Charge for water-crackers. Meal powder four ounces, falt-
petre five pounds, brimftone two pounds and three quarters, tan-
ners dull: one pound and an half, charcoal one pound, coarfe
coals two pounds and three quarters, glafs dull four ounces, lead
-three quarters of an ounce.
Charge for tumbling water-crackers. Meal powder three quar-
ters of a pound, charcoal four ounces, for one and an half or
jtwo pound rockets.
Charge for water-cats. Meal-powder two parts, faltpetre four
parts, brimftone one part, coarfe coals two parts, faw-duft two
parts, and antimony three parts, moiftened with linfeed oil.
Of rocket-fiers, and the manner of charging them. Thefe are
oftwo forts., namely, the fingle and double ones : The latter are
made in the following manner :
Have a nave or button turned, the dimenfion of three inches,
together with two knots upon it, perpendicular one againft the
other, of an inch and an half long, and fo thick that both rocket-
cafes may fit over them ; there muft alfo'be a hole of the third of
an inch in the center of the nave, for the iron pin to go through,
on which it is to fly. After this take two rocket-cafes of equal
dimenfions, which are choked quite clofe at the neck, and
glued : Ram in the charge fo far as to leave only room to fix
them on the two knobs upon the nave. This done, bore into
both rockets, near the clofed up necks, fmall touch-holes; and
one more near the pun, in that which is to burn firft : From this
hole