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Патент USA US2408368

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1, @9136.
Filed March 6, I945
a ‘X
Patented Oct. 1, 1946
Alan E. Brickman, New Haven, Conn., assignor to
The American Steel and Wire Company of New
Jersey, a corporation of New Jersey
Application March 6, 1945, Serial No. 581,309
4 Claims. (01. 114-241)
This invention relates to a torpedo net having
a mesh structure. There are two types of torpedo
nets in general use: one type being used to pro
of wire structures l6 fastened together by means
of clips la, The wire structures l2 and [6 are
also fastened together by clips [3. If used with
tect moving vessels, and the other type being
a propeller catching net, the clips It will be slip
used to protect stationary objects. The nets may
clips, preferably of the construction described in
also be divided into two classes in regard to the
my above mentioned pending application, but the
manner in which the torpedo is caught: one type
slip clips 14 will be designed to slip at a lower
catches the torpedo by the propeller, and the
pressure than the clips i8. Therefore, when a
other type catches the torpedo by its nose. In
torpedo hits the net, the Wires l0 and I2 will
the nose catching type, the mesh is generally of 10 move with respect to one another within the
an interwoven grommet design except a new type
clips 14 to the position shown in Figure 2 and
which is secured at each intersection by a ?xed
absorb the initial shock caused by the torpedo
clip and is disclosed in my co-pending application
striking the net, thus preventing breakage of
entitled “Torpedo net and method of making the
the net. Thereafter slippage will occur between
same,” Serial No. 581,310, ?led March 6, 1945. In 15 the wires in the clips l8. Since the torpedo covers
the propeller catching type, the mesh is con
a relatively small area of the net it sets up differ
nected so as to slip at the intersections. Regard
ent stresses in the various stranded structures
less of the type of net, however, it may break due
thereof, thus causing the stranded structures,
to the shock of the torpedo hitting it and there
connected by means of the clips 6, to slip with
fore I propose to use a shock absorbing connec
respect to one another. In case of a nose catch
tion in the net to protect it against breakage.
It is, therefore, an object of my invention to
provide a torpedo net structure having a shock
absorbing seam incorporated therein.
This and other objects will be more apparent
after referring to the following speci?cation and
attached drawing, in which:
Figure 1 shows the shock absorbing seam be—
fore the torpedo strikes the net; and
Figure 2 is a similar View showing the position 30
ing type of net, the clips 18 are non-slipping,
preferably of the type disclosed in my copending
application, Serial No. 563,286, ?led November
13, 1944, entitled “Method and means for securing
?ttings to wire structures.” The shock of the
torpedo striking the net will be absorbed by the
of the seam after the torpedo strikes the net.
Referring more particularly to the drawing,
the reference numeral 2 indicates the longitudi
nally extending head rope of the torpedo net,
which is connected in the usual manner to booms
extending from the vessel. A wire rope 4 of sub
stantially greater length than the head rope 2
is connected thereto by means of clips 6 at spaced
apart intervals, a loop being formed in the rope
4 between each pair of clips; Attached to the
wire rope 4 by means of clips 8 is a longitudinally
extending wire structure H! which is arranged
slip seam formed by wire structures II] and 12
in the manner described above. Instead of being
connected to the rope 4 the horizontal shock
absorbing slip seam may be attached directly to
the head rope or at a lower point than shown,
the only requirement being that it be used be
tween the area of torpedo impact and the sup
porting rope. The reason for this is that pene
tration of the not normally occurs when fast
running torpedoes encounter a mesh structure
having a border line strength value and little or
no inherent yield. A catch of the same torpedoes
with the same net is quite probable if there is
present in the net construction an inherent yield
which provides the time lag necessary to the
absorption of the peak stresses. The greatest
stresses resulting from torpedo impact are trans
extending wire structure l2, the wire structures
being fastened together by means of slip clips 45 mitted to the supporting rope.
While my invention has been described as re
[4. These clips are preferably of the type dis
lating to a horizontal shock absorbing seam, it
closed in my copending application, Serial No.
may also be used at any angle between the hori
581,311, ?led March 6, 1945. However, other
zontal and vertical, In such arrangements, the
types of clips could be used. It will be seen that
the wire In as it leaves the left hand clip 8 passes 50 seam is connected to the sections of the net in
under the wire structure 12 to a clip l4, over the
the same way as the horizontal seam and func
wire structure l2 to a second clip l4, and then
tions in like manner.
in like manner passing alternately under and
While one embodiment of my invention has
over wire structure [2 between the clips M. The
been shown and described, it will be apparent
mesh structure of the net is formed of a plurality 55 that other modi?cations and adaptations may
in a zigzag Weave with a second longitudinally
following claims.
I claim:
1. A torpedo net structure or the like compris
ing a rope, a mesh structure connected to said
rope, said mesh structure being formed of a plu
rality of wire structures arranged in a zigzag
manner with the apices of adjacent wire struc
tures being connected by slip connections, and a
shock absorbing seam between the rope and mesh
3. A torpedo net structure or the like compris
be made without departing from the scope of the
ing a plurality of sections and a slip seam be
tween at least two of said sections, said slip seam
structure, the shock absorbing seam giving under
less stress than the connections in the mesh
2. A torpedo net as de?ned in’claim 1 in- which i
the shock absorbing seam comprises two stranded ,'
wire structures, slip connections between the two,
wire structures, means for connecting one of said
wire structures to the rope, and means for con
necting the other wire structure to the mesh
comprising two stranded wire structures, slip
connections between the two wire structures,
means for connecting one of said wire structures
to one section and means for connecting the other
wirestructure to the second section.‘
4. A torpedo net structure or the like compris
ing a head rope, a mesh structure suspended
therefrom, and a horizontal shock absorbing seam
between the head rope and mesh structure, said
shock absorbing seam comprising two stranded
wire structures, slip connections between the two
wire structures, means for connecting one of
said wire structures to one section and means for
connecting the other wire structure to the second
section. .
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