Projectile Page: 3 of 5
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U1tiEDSTATES PATENT OF'1C
l LLIAM MO. DOUGLAS, OF GALVESTON, TEXAS.
PROJECTILE.-9 1 2 ,' - . 3ecincation of
Arpiication fled August 1
Th all? ho, it 7,ay concern:
Ba (Wiflt ow that I, WiJM M. Douo-.
LAS, a (:itiZenf of the Uited States, residing
at Galveston, in th county of Galveston
5 and State of Texas, have invented certain
new and useful Impro verments in Projec-
tiles, of which the following is a specifica-
tion.
The. present inve ntion relates to projec-
10 tiles and has particular reference to a shell
which ifs auapte'1 to be fired from a gun to
penetrate the objled v aieied at and subse-
quently explode therein.
Aii iiportant oject of the invention is
15 to provide projectile or the above men-
ioned? ' chiaracter, so constructed that the
ameI ill have l'higih armor penetrating
efficiency and a very large explosive ma-
terial carrying capacity, whereby the ex-
20 i sion of the shell subsequently to its peie-
traTion ilt~o orthr( h the armor Will be
ve'ry disais rous.
A -urth.er object of the invention is to
pr 'idL- a shell of the above mentioned char-
25 acter, wich is accurate in flight, through
long _"a1ges and capable of proper pene-
tration and exploding in a disastrous man-
ner far in excess.of the present armor pierc-
ing shells and equaling the present torpedo
30 shells.
A further object of the invention is to
provide a projectile of the above men-
tioned character, which is comparatively
safe to handle, easy to manufacture, and
35 may be made in any desired caliber.
Other objects and advantages of the in-
vention will be apparent during the course
of the following description.
in the accompanying drawings forming
40 a part of this specification and in which
like numerals are employed to designate
like parts throughout the same, Figure 1 is
a. side view of my improved shell, Fig. 2 is
a central longitudinal sectional view
45 through the same, Fig. 3 is a side view of
the inner frame or body portion of the
shell. Fig. 4 is a horizontal sectional view.
taken on line 4-4 of Fig. 2, Fig. 5 is a
side view of the molded explosive, Fig. 6 is
50 a horizontal sectional view taken on line
- ;of Fig. 5, Fig. 7 is a side view, partly
in section, of a slightly different form of
the invention, and, Fig. 8 is a horizontal
sectional view taken on line 8-8 of Fig. 7.
5 In the drawings wherein for the purpose*Letters Patent. Patented Aug. 5,1913.
6, 1912. Serial No. 715,404.
of illustration, I have shown a preferred
embodiment of my invention, the nuneral :
designates an inner frame or body portion
of the projectile, which is formed of very
hard steel. This inner frame comprises a 60
solid head 10, which is suitably tapered or
of the proper contour to successfully peiie-
trate armor plate. lFormed integral with
this penetrating head 10 are legs 11, which
are spaced and preferably diametrically ar- 65
ranged, as clearly shown in Fig. 4. These
legs are stiffened or reinforced by inner
longitudinal ribs 12, as shown. The nu-
meral 13 designates a preferably previously
inOlde m1s55 of gui cotton or other explo- 70
sive, adapted for insertion between the legs
11. and having longitudinal openings
formed therein to receive the legs. The
outer surface or periphery of the explosive
mass or charge 13 is preferably flush with 75
the outer surface of the legs 11, as shown.
Attention is called to the distribution and
amount of the metal in the fraiiei 9, where-
by the shell has a -high armor plate pene-
trating efficiency and a very large chamber 80
or space is provided for holding the maxi-
mnm amount of explosive charge. The no-
ineral 14 designates a. base, which is at-
tached to reduced extensions 15 of the legs
11, by means of bolts or rivets 1G. The base 85
14 is provided with alannular recess to re-
ceive a rotating ring 17, which is rigidly
connected with the base 14 and serves to
impart rotation to the shell. Surrounding
the legs 11 is a jacket 18, formed of mild 90
steel and connected with the legs 11 at one
end, by the bolts. or rivets 16, as shown.
Surrounding the penetrating head 10 is a
cap or wind shield 19, which is suitably
tapered or of a contour to insure accuracy 95
in flight of theshell. This cap 19 is pref-
erably formed of mild steel and is con-
nected-with the jacket. 18by bolts or rivets
20, which preferably have connection with
the legs 11. At its ends the cap 19 is pro- 100
vided with a screw-threaded opening, which
is normally closed by a bolt-like plug 21.
Mounted upon the ends of the penetrat-
ing head 10 is a protecting block or cap 22,
which is formed of soft steel and is held 105
from accidental displacement by fixed arms
23. The function of this protecting cap or
block 22 is to absorb the energy or impact
and thus relieve the inner frame of any
considerable strain, while producing an elas- 110
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Douglas, William M. Projectile, patent, August 16, 1912; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth853587/m1/3/: accessed June 23, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.