Патент USA US2408368код для вставки
1, @9136. A. E. BR!CKMAN 2,408,367 TORPEDO NET Filed March 6, I945 a ‘X a Z INVENTORI Patented Oct. 1, 1946 2,408,367 UNITED STATES PATENT OFFICE 2,408,367 TORPEDO NET 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) 2 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 ‘2,408,367 3 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 4 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 0 structure, the shock absorbing seam giving under less stress than the connections in the mesh structure. 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 20 structure. 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. . ALAN E. BRICKMAN.