Springfield globe-republic. (Springfield, Ohio) 1884-1887, 1886-01-10
AL IN. NAVY 1AKD.
DESCRIPTION OF THE METHODS OF
MAKING MODERN ORDNANCE.


toward the yAIu, siA "oA7"
wagon. These were the tubes ana JACK,
cts." out Of which arc being produced
guns that are A. beautiful ms they are de-
structive. The tube Is the foundation OF
the gun, extending Its entire length
over which strengthening rings ART
placed, the principal OF these being tne
Jacket which Is One-third the length OF
the gun and bands the entire oreech-
Some Of the single pieces weighed as
much a 5000 or O,0OO pounds.
SLOW PROCESS OF ROuGH BORING.
On being brought to the navy-yard they
were rough bored. This Is SLOW process,
which many visitors watch, scarcely
knowing what il being done, ~ an I'm
meuye tube like that OF ten inch gun,
for INSTANCE, nearly two feet In diameter
and TIVE epty-seven and one-hah feet IN
length, Weighing about 5000 pounds. v
sesn on Q lathe, slowly revolving, whns
TIE chips oe the metal fall to the ground.
al the whils being constantly watched
hv tn, msehinisG The ladies always
pick up the metal shavings as they drop.
kut ut them fall rather more eagerly.
Thsv and them rather scOrching hot, and
ooatant tAsmsslvss to walt till chip
eools before placing II in their sachss
Along With othsr rslics- At Last, whom
tie boeine bead appears at the opposite
and of the tube from which Il entered,
having made IT. slow journey through
TIE SOLID metal, the tube u returned 70
tAc works 70 b oil tsmpersd. BY which
the steel % raised to the reQuiremenfA
When the large tubes have been 10
tnr,sd 70 the yard tempered, and the
nall uleces have been treated ukeW1se,
they are again ready for the machinisfe
skiilful hands The tube II again placed
On the lathe, and the work OF smooth
borine be4ins, and when one hsars re-
mario about having 1t made one-thou-
eandth Of an inch larger. or Of other
measuremcnts in that nsishborhood,
r,elizstiou of the accuracy necessary
davns upou them. After the smoosh
borine process the rough, ungninly piece
Of mctl begins to enter into neW ~
istence.
nYsrHnY OF rHK cIosK JOINTS.
Ths bsst comparison that can give one
an idsa Of ono OF the completed guns ne
has nsver seen, y to say that they sook
Hks large, bright. telescopes with PAT,
axtsndsd, only the sighting h done af tne
ouoosife end. We hnd the table spoken
a ahout three -fourths covered win its
.iackstr and rings, which sncircle the
| ~. making II largest ct the breech and
smailest ut the mu1sle. These are %
oloaely fitted ON that one would at nrst
| think the whole gun was one sond peeee
a. metal. The uninitiated can have the
nyvtsry Of the Close joints explained BY
leevine the finished guns and going over
20 the ordnancs foundry again and -.
| ine the proeess Of aassembiinG,~ or OF
shrmking tAs jacket and rinss On the
tube.
ne i,rss paees to 20 on The tube b ths
stecket.s which covers the brsech q tAe
tuhe 10 the extent Of one third OF the en-
tire lsnsth, which tube Il st nrst - sim
ple IN n form - blow-pips. This VIII
be found standing on the ground ON end.
Il vffl be something Ike ave TO eight
49, hish by four IN outside diameter.
1eside this Jacket from slx to eight ring
n On this run. II The tube p about q
s. sfacketed," - IL b called, that II
placed in position on the tube, wood
n. vill hs found 10 b burning besA On
She ineSds snd the outside of the jacket
"a q nachinist vim b on hand. anf
ever short time viii measure the hne'
diameter 70 - whsa II has bsen q
panled by ~ heat sufacisn1ly to 20 ovea
the tabls, and thh h tbs way In whicl
the myvtaYy Of ths close j0tnts b cleared
The Jackets" inner diameter 10 mad
ahout two oue-thousandths ol an incl
mailer than the tubs over which Il y :.
-. snd can only b passed. On By thi
nsekod oe expanding tie metal
| now .sAcx.T" - PUr on.
,WNna H. prsuarasory work is scint
- -. erremsa vfu Hksly explain soms
thtnv shout the uhilosophy Of putin.
49, rine, On the tube 10 form the gum
a oonr,e they are 70 Rive strength. IN,
=. n once understand that, II the tub
.ho,n cr.ck the rinRs being separat
49, ma covering nearly the entir
EtH InA prevent an explosiou
~ ,...on for .eyersl rinss, instead Q
=. i.,re one h uartly. ct least, th
.- rntnr. a fhe entire gan NAL
- = n-c.sssry 10 rupture nearly al tn
~ =. ., ,non,,,,a tAat the siacket
~" .~n.nd.d .m@c;ently. = derrick /
sHa .nI .con IT, place
..d ..,ri>d around u WHARF Ii
- .. =. .ssc.,.d nrmIy axed IN An nj
III. ...,,,or, .tsndine IN = nit. 70 a.
n!n. e. ,nn shont leysi with the grount
~".s - n. -i.cketr il lowered, 9
s,wra. ,h...,h. ssct Of the Close measur,
G. . ec-sns,en bv the idls locker,
n. .,..sstn rr.6ually cools. an
....s,,e o ci..,. ~ tubs - one pisc,
~" 49,. tor the absolute pr,
80, r.cs...ry in fitting the Jack.
~ ~. : .noarent Too me,
o..s,..ss. vh,eh vouid Be the cas-
esaiinAA, .iI -n.,IA -,
tee Seo.. W -. ,;t.s. ~o.,,d =,
v..t tAe metal from having tight hola
Tha esatssctim Of the metal forms
.ooM Weld" and gives constant pro.
vre by ths .jackss' upon the innsr wal
a - tube. Il often happens that q