1000000030

G U N

( 761

G U N

cf a bulle! of

33.

h~ve

6 ioches (lf

d:~mmr. ~oel

lome·

thir.g more; ti" y .re

lipes Ihick, ,oel

igh 1611>.

Tltofe of the ealiber

h!Ve 5 ineh,s 5 lioes dia·

meter. are 61iocs thiek.

~nd

"'eigh 121b.

Thofeof the

~ I,bcr

of 16

h~l'e

4 in,'hes 9 lioes of dia·

meter, are 5 lioes thick.

~od

",eigh 8 1b.

Thofe IVhieh weigh 61b.

h~ve

3 ioches

lioes diame

ler. ,oel

lioes iD dllekocfs.

Thofe of 51b.

~'eight

have 3 ioehes 'tlioes diameter,

aoel 5 lioes io thiekocfs.

Thofe whieh weigh

lb. have 2 inehe! 8 lines diame·

ler, and are

lioes Ihiek.

Thofe of lib. lVeigh t, hdve 2 ioehes 4 lioes diameter,

aod

lines in thickncfs.

Thofe

01'

t lb. weight have t ioeh 10 lioes

di~meter,

aod are 3 lioes thiek.

Thofe of

have 1 ioeh 8 lines diameter, aod are 3

lio~s

thieL

Tbofe of : have 1 ioeh

lioes diameter. aod are 3

lioes thiek.

Thofe of a

have 1 ioeh 2 lioes diameter, and are 2t

lines thiek.

Al! thefe graoadoes mun be thieker at boltom thao any

where elfe.

T hde dirrercot fom of graoadoes have alfo differeol

fons of fufees.

Thofe ofthecaliberof

12 8

are at tbe biggcn eod, of

12/in.

10t tO 9t

The diameter of the (

orifim,

The fufees are io (

'"eh

3T'

21..

length, in all, of

4 4

Aod as the large graoadoes, whieh are

m~de

to throw

ioto the folfes. or ditehes, or lVith Im.1I mortars, they

mun have fu fees of diffmnt Itnglhs; thefe are for fmall

monars; thofe for ditehes mufl be Ihorter.

The Germaos cover over the fufee ",i,h paper or pareh.

meot, tied with a Ihread round the fufee.

In Fraoce they ufe a compofitioo of black piteh, mixed

witb a linle tallo"" with ",hich Ihey rub over the fu(ee,

wheo fi xed tO the granado.

The fufee mull burn fo long, and

looger, as is the

time of the mouon of the bomb or graoado, from the

mouth of the

mort~r,

CJe.

to the place ",here il is to

fall, wl,ieh time is about 27 fecoods; fo Ihat the fufee

mul! be contrived, either from the natUre of the compo·

fllioo. or the leoglh of the pipe ",hieh eooJains it, tp

buro jun Ihat time.

At Paris Ihey eharge thefufees for the bombs aod grao

nadoes wilh a eompol;tioo made wilh powder.dufl aod

ehareoal, very."'ell pounded, aod fifled very fine, pUto

liogtwOouoee. of ehareoal on eae" pOllnd of powder,

~nd

m,ke feveral proofs, to koo", if ¡be eompofi¡ioo

not

too quiek.

Tltere are feveral olher compofit;oos 10 eharge Ihe fu·

fee3for bombs or granadocs.

The firn i.·(lf 41b. uf powder, lib. of fa!Ipetre, aod

l ib. of fu lp"ur.

The f.eonel is of Slb. of powder, 21b. of fa!Ipme,

.od I pClUnd of full'hur.

V OL.

H. No.

58.

-T ite t"ird , IVhich is the ben, is uf 31b. of po",der,

21h. of fa ltvme, .od lib. Qf fulpltur.

T he founh is of 31b. of powdcr, 21b. of fa!Ipetre,

aod -} lb. of fulphur.

Tbe fufees mull be ehargcd eveo,

they mun buro

without fpiltiog.

The fufee of the h. nd·graoado, wbieh is of the eali·

ber of 4, mllll be

ioehes 2 lioes long, 9 lioes of dia·

meter, aod 6 lioes at the fmall end: the orilice DI' the

fufee 2t lines.

As fooo as Ihe fufee is plaeed to the graoado, the head

thereof mun be faueed io mehed piJeh , aod aflerwards

dipped io water, whieh hioders the eompoGtion from

fpoi liog, aod the wood from roning.

The

PETARD ..

(ibid.)

i, Ihe oext piece of mil·

lery whieh deferves our altentioo, aod is a kiod

eogi oe of metal, fome",hat in Ihape of • high.erowned

hato ferving to break do",n g.lfes, barrieadcs, dr.w·

bridges, or ¡he like works; whieh are inteoded to be fu ro

prized.

is very Ihon, oarrow at Ihe bre<eh, aod wide

at the muzzle, made of copper mixed ",itb a linle brafs,

or of lead wilh tio.

The petards are oot always of the 'fame heighl and

bigoefs: theyare eommonly 10 ioehes high , 7 inehes of

diameter a·top, .nd 10 inehes at bonom. They weigh

eommonly 4°,45. aod 50 pounds.

The madrier, on ",hieh Ihe petard is placed, aod

\Vhere it is tied wit" iroo cireles, is of tlVO feel for ils

gremlt width, and of 18 incbes DO the fides , .od no

thieker thao a eommoo madrier. Voder the m.drier are

tW(l iroo bars p.lfed erofs.ways, wilb a hook, whieb ferves

to 6x the petardo

1'0 charge a petard

inehes high, and

or 7 inelles

of caliber or diameter

the bore, tlur iofid e mua be

fidl

fery lVe!l cleaned and hemd, fo that the hand may bear

the heat; tbeo lake the bert powder that may be found,

Ihrow

over

it fome fpidt of wioe, and expofe it to Ihe

fun, or PUt it io a fryiog.pan; and wheo it is we!l dried,

or 61b. of tltis po",der is pUt into the petard, whieh

reaehes lVithin three fingers of thé moulh: the vaeaoeies

are fi!led wilh tOIV, .nd flopped wilh a wooden t.mpioo;

the moulh beiog Itroogly bouod up lVitn c10lh tied very

tigbt wilh ropes ; theo

is fixed DO the madrier,

t.Im

has a eavity CUt io il 10 reeeive the moulh of the petard,

aod falleoed do",n with ropes.

Sorne. inlltad of guo powder for Ihe eharge, ufe one

of the followiog eompofitioos,

. iz.

guo.powder feven

pound" mereury fu blimate one ouoee, eamphor eight

Ollnecs ; or guo.powder

fix

pouods, mercury fublimate

lime ouocel, aod fulphur three; or guo·powder fix,

b~alcn

gl,fs -} an ouoee, aod eamphor"¡'.

Heforeaoyof Ihefe pieecs are '-pproprialed for fcrviee,

il is neeelf"y

have eaeh uodergo

panicular trial of

ils found ocfs, whieh

ed!led a proof, tObe m,de

hefore ooe authorifrd for Ihe purpufe, c.!led the

.;1'00[

mojler.

1'0

m.ke

proof of Ihe pieee, a proper

pl~ce

is ehoren,

which is tO be termioated hy a l1'OllOI of eanh very thiek

to receil'e the bullm fired agaioll it. thal noneof thcm

may run lhrough it. The pieee is

l.iJ

00 thengrouod,

8 F

fupported