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35; 35- K. H. WILCQXON 2;‘w9233 SWEEP WIRE PASSING DEVICE Filed June 1, 1943 . 2 Sheets-Shae’; 1 32 .IINVENTOR. 33 Ks nna’th HiNi'lc. c: x :1 r1. HIS ATTORNEY 2,409,233 K H“ w uh c O x O N SWEEP WIRE PASSING DEVICE Filed June 1, 1943 2 Sheets-Sheet 2 I INVENTOR. Kenne'lth I-LW-ilau xn‘i'l. BY HIS ATTORNEY Patented Oct. 15, 1946 2,409,233 UNITED STATES PATENT OFFICE 2,409,233 SWEEP WIRE PASSING DEVICE Kenneth H. Wilcoxon, Cabin John, Md. Application June 1, 1943, Serial No. 489,269‘ ' 7 Claims. (01. 102-15) (Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) 1 2 The invention relates to improvements in anti minesweeping devices and more particularly to Figure 8 is a transverse sectional view taken substantially in the line 8—-8 of Figure '7. a device for permitting the passage of a sweep Figure 9 is a transverse sectional detail view cable through a, mine mooring cable without in taken substantially on the line 9-9 of Figure '7. In the drawings, which for the purpose of illustration show only a preferred embodiment of the invention, and wherein similar reference terrupting the continuity of the mooring cable. 7 An important object of the present invention is to provide a sweep cable passing device with means orienting the device depending on the di characters denote corresponding parts through rection of travel of the sweep cable so that the out the several views, the letter A designates a sweep cable will be properly introduced to the H) buoyant mine, connected to an anchor B, by a passing device. mooring cable 0 which is provided with the im Another object of the invention is the provision proved device D for passing a sweep wire E. of a device to be interposed in the mine moor The device D includes an elongate frame l5 ing cable and which will permit substantially unobstructed passage of a sweep cable there through. ' A further object is to provide a device of the character described which will operate to per mit the passage of a sweep cable at a relatively high speed through the mooring cable. having left and right side’ members [6, ll, ‘rig 15 idly held inspaced generally parallel‘relation, at the lower end portion l8 of the frame, as by spacers i9, 20 welded between the side mem bers. Formed integrally with the spacer 20 are spaced apart forwardly and downwardly inclined 20 supports 2|, 22 providing a forwardly opening The invention also aims to provide a device notch 23. as described which will operate after long sub Pivotally mounted for swinging movement mergence in salt water and which is not greatly about an axis in rearwardly spaced parallel re affected by the accumulation of sea growths lation to the frame D, as by a pintle 24 extend 25 ing through the spacers l 9, 2B, is a combined lever thereon. The invention additionally has for an object and latch member 25. This member 25 includes the provision of a device of the character de a latch 26 normally extending across the open scribed which will function with heavy loads on end of the notch 23 and a lever 21 for swinging the mine mooring cable. the latch 26 to the released position illustrated Other objects and advantages of the inven 30 by the broken lines in Figure 8. A shoulder tion will become apparent during the course of 28 on the member 25 engages the side member the following detailed description, taken'in con IE to limit swinging movement of the latch be nection with the accompanying drawings, form yond its released position. The latch 26 is pro-l ing a part of this speci?cation, and in which vided at its forward end with an inclined cam drawings, surface 29 serving to automatically open the Figure 1 is a, side elevational view of the de vice, interposed in a mine mooring cable, a por tion of which has been broken away, and illus latch to permit movement of a cable into the notch 23. Encircling the pintle 24 is a‘helical trating the relationship of parts upon the pas frame side member l5 and its other end bear coil spring 30 having one end bearing on the sage of a sweep cable into the device. 40 ing on a vertical web portion 3! of the member Figure 2 is a side elevational view of the device 25, for urging the latch 26 toward the closed illustrating the relationship of parts just prior to passage of the sweep cable from the device. Figure 3 is a front elevational view of that por tion of the device which is attached to the mine. Figure 4 is a side elevational view of the de position shown in full lines in Figure-8. The side members IS, IT include downwardly and rear wardly inclined lower end portions 32, 33 which are diagonally outwardly bent as shown in Fig ures 3-5. vice and showing the normal relationship of its Rigidly secured to the inner faces of the side parts. members l6, H, as by welding, are transverse Figure 5 is a horizontal sectional view taken supports 34, 35 provided between their rear ends substantially on the line 5—-5 of Figure 4. 50 with a suitably ?xed spacer block 36 de?ning a ' Figure 6 is a view partly in front elevation forwardly opening channel 31. These supports and partly in section, taken substantially on the 34, 35 include laterally extending forward end line 6-6 of Figure 4, portions 38, 39 providing-convergent guide sur Figure 7 is a central vertical sectional view faces leading to the channel 31. Transverse aligning notches 40 are provided in the upper of the lower end of the device. 2,409,233 sides of the supports 34, 35 as shown in Figures 4 parts is that shown in Figure 4. The sweep wire, upon engagement with the mooring cable, moves forwardly and upwardly along the mooring cable Pivotally mounted between the side members to the chain 53. When the sweep wire reaches l6, IT, at the upper end portion of the frame I5 is a link 4| connected to the mine A by a Q11 the junction of the anchor cable and chain, it hesitates because of the in?exibility of the joint. relatively short length 42 of the mooring cable Upon passing this juncture, the sweep cable tends C. In the example shown in-Figures 3 and .4, to accelerate vdue to the resultant increase in the opposite sides of the link 4| are provided tension in the sweep cable. A sufficient length of with integral stub shafts 43 terminating in chain is provided to check excessive acceleration squared ends 44. of the sweep wire before the passing device is Means is provided for orienting the frame l5 reached. The device having been oriented to the with respect to the path of travel of a sweep’ position shown in Figure 1, by the trailing action cable. Fixed between arms 45,46, as by screws of the vane 48, upward pressure of the sweep 41, is a rudder or vane 48 formed of sheet ma wire on the lever 21 swings the latch 26 to its terial, and provided at its rear edge with di released position, as shown by broken lines in verging ?ns 49, 50. The arms 45, 46 are pro Figure 8, to permit movement of the sweep cable vided at their forward end portions with square E to the position shown in Figure 1. In this po openings 5| snugly receiving the squared‘ ends 44 of the stub shafts 43 whereby the vane is fixed Q ' ,sition, the sweep cable E produces tension in the for swinging movement with the link 4|. When 20 cable 52 attached to the anchor B, and acts through the upper portion of the chain‘53, the the device is to be stored, the vane 48 may be frame l5 and the cable 42 to pull the mine A for swung to the position shown by broken lines in wardly and downwardly. As the sweep cable E Figure 4. . moves forwardly in the direction of the ‘arrow The mooring cable C also includes a relatively long length 52 of cable attached to the anchor 25 in Figure l, the angularity of the anchored cable 52 increases, and the drag of the anchor returns B and terminating at its upper end in a short the chain 53 to the notch 23, wherein it is held length of chain 53. The link 54 at the free end 4 and 5. of the chain is ?xed to a screw 55 threaded into the shank 55 of a clevis 51. This shank 56 is by the latch 26. l offset connecting element 60 adapted to bridge vertical position due to the boyancy of the mine tween the connecting elements 58, 60 slightly greater than the distance between the supports 2|, 22 and the supports 34, 35, upon tensioning of the chain by the bowed spring 59. invention herein shown and described without The load on the moving cable is then carried by the support 2 I, 22 at the lower end of the frame square in cross section so as to non-rotatably ?t l5. Further forward movement of the sweep within the channel 31. The clevis 51 includes a' cable E pulls the clevis 51 forwardly and out of transverse cylindrical portion 58 of a length to the channel 31, the relationship of parts now being bridge the channel 31, and adapted to fit in the substantially as shown in Figure 2. transverse notches 40. Pivotally secured to the Upon clearance of the sweep cable from the clevis is one end of a bowed leaf spring 59 pro 35 device D, the mooring cable returns to its original vided at its opposite end with a rigid laterally A, and the spring 59, held ?rmly seated at its lower the notch 23 and rest on the supports 2 I, 22. end 6E) by the chain 53, returns the shank of the As shown in Figure 9, this connecting element 60 includes a rounded free end Bl provided with 40 clevis 5'! to the channel 31, as shown in Figure 4. The equipment is now in readiness for another a diagonal slot 62 within which an intermediate passing operation. . link 63 of the chain 53 is rigidly secured, as by Various changes may be made in the form of welding. As shown in Figure 4, the distance be~ While the sweep wire may engage the mooring cable at speeds as high as 20 or 25 knots, the relative speed during the passing operation is not so high, because the bight formed in the mooring cable is carried along with the sweep wire until the mooring cable has been passed. The normal load on the mooring cable due to the buoyancy of the mine is increased when it is laterally departing from the spirit of the invention or the scope of the following claims' This invention may be manufactured and/or used by or for the Government of the United States of America without the payment of any royalty thereon or therefor. I claim: 7 1. In ‘equipment of the character described, a mooring cable including a mine cable and an anchor cable, and a device including a rigid elongate part and a resilient elongate part, said parts being connected one to the mine cable and drawn through the water for “a distance while the other to the anchor cable, means separably the sweep wire is slidingv up the mooring cable connecting said parts together at one zone, and and passing through the device D. auxiliary means distinct from said ?rst-men This lateral motion orients the passing device to the proper position for entrance of the sweep 60 tioned means and operable to additionally sepa rably connect said parts together in a zone spaced wire due to the trailing action of the rudder or from said ?rst-mentioned zone to permit the pas vane 48. During the passing operation, advan sage of a sweep cable‘ therebetween without inter tage is taken of the angle produced in the moor ing cable by this lateral motion to facilitate the release and re-engagement of parts. rupting the continuity of the mooring cable, said resilient part flexing upon separation of either one of said connecting means and urging said separated connecting means into connected rela in the mooring cable above the point of contact tion. of the sweep wire therewith, but the nearer the 2. In equipment of the character described, a device is located above the path of travel of the sweep wire, the more e?ective it will be in suc 70 mooring,’ cable including a mine cable and an anchor cable, and a device including a rigid elon cessfully passing an enemy sweep wire before the gatepart and a resilient elongate part comprising cutters on the sweep wire reach the mooring The passing device D must of course be ?tted a bowed leaf spring, said parts being connected one to the mine cable and the other to the anchor The operation of the device D will now be de scribed, assuming that the initial relationship of 75 cable, means separably connecting said parts cable. . . 2,409,233 5 6 together at one zone including a connecting ele between said supports, a main connecting element ment at one end portion of said bowed leaf spring, and additional means distinct from said ?rst mentioned means and separably connecting said parts together in a zone spaced from said ?rst mentioned zone, said additional means including a connecting element at the other end portion of said bowed leaf spring, said bowed leaf spring ?exing upon separation of either one of said con ?xed to the anchor cable and normally bridging said spaced main supports, an auxiliary connect necting means and urging said separated con necting means into connected relation. ing element ?xed to the anchor cable and nor mally bridging said spaced auxiliary supports, a spring tensioning the anchor cable between said main and auxiliary connecting elements, the dis tance between said connecting elements upon tensioning of the anchor cable being at least equal N 3. In equipment of the character described, a mooring cable including a mine cable and an anchor cable, a device including parts connected one to the mine cable and another to the anchor cable, means separably connecting said parts to gether in spaced zones to permit the passage of a sweep cable therebetween without interrupting the continuity of the mooring cable, said means including a latch releasably securing said parts 20 to the distance between said main and auxiliary supports, a latch releasably securing the anchor line to said member in the vicinity of said main support, means for releasing the latch upon move ment of a sweep cable upwardly between the anchor cable and said elongate member, and means for orienting said elongate member upon engagement of a sweep cable with the anchor cable to guide the sweep cable between the anchor cable and the elongate member. 6. In equipment of the character described, a together at one of said zones, a cam disposed in mine cable, an elongate member having an upper the path of travel of the sweep cable for releas end portion attached to the mine cable, a lower end portion provided with a main support, and an ing the latch, and a spring urging the latch to ward its closed position. intermediate portion provided with an auxiliary 4. In equipment of the character described, 25 support, an anchor cable, a main connecting ele a mine cable, an elongate member having an ment ?xed to the anchor cable inwardly of its upper end portion attached to the mine cable, a upper end portion for releasable connection to lower end portion provided with a main support, the main support, an auxiliary connecting ele and an intermediate portion provided with an ment attached to the anchor cable at its upper auxiliary support, an anchor cable, a main con 30 end portion for releasable connection to the aux~ iliary support, a spring tensioning the anchor necting element ?xed to the anchor cable in wardly of its upper end portion for releasable cable between said main and auxiliary connect connection to the main support, an auxiliary con ing elements, the distance between said connect necting element attached to the anchor cable at ing elements upon tensioning of said cable being its upper end portion for releasable connection 35 at least equal to the distance between said main to the auxiliary support, a spring tensioning and auxiliary supports, a latch releasably securing the anchor cable between said main and auxiliary the anchor line to said member in the vicinity of said main support, and means for releasing connecting elements, the distance between said connecting elements upon tensioning of said cable said latch upon movement of a sweep cable up being at least equal to the distance between said wardly between the anchor cable and said elongate main and auxiliary supports, a latch releasably member. securing the anchor line to said member in the '7. In equipment of the character described, a vicinity of said main support, means for releas mooring cable including a mine cable and an ing said latch upon movement of a sweep cable anchor cable, a device connecting the mine cable upwardly between the anchor cable and said 45 and the anchor cable, said device upon proper elongate member, and means for orienting said ‘ orientation relative to the direction of travel of a elongate member upon engagement of a sweep sweep cable permitting the passage of the sweep cable with the anchor cable to guide the sweep cable through the mooring cable without inter cable between the anchor cable and the elongate rupting the continuity of the mooring cable, and 50 a vane for orienting the device relative to the member. 5. In equipment of the character described, an direction of travel of the sweep cable, said vane elongate member having an upper end portion having a trailing marginal edge portion includ ing diverging ?ns for increasing the drag and for attachment to a mine cable, a lower end por tion provided with spaced main supports, and an directional effect of the vane on said device. intermediate portion provided with spaced aux 55 iliary supports, an anchor cable normally disposed KENNETH H. WILCOXON.