Jan. '7, 1947. c. H. CLEMENT ETAL - 2,413,909 ‘WIRE STRING'ING' mourn‘ Filed Aug. '7, '1944 ' 4 Sheets-Sheet 1' k. ah. Wm.. \m. 3 v INVENTORS . ‘Jam/7,1947. ‘ ' 'QMLEMENT-ETAL 2,413,909 » WIRE STRINGING MACHINE ‘Filed Aug. 7, 1944 V 4 Sheds-Sheet? HQ. 2. INVENmRS $0M)“ 2 Jan. 7, 1947. Q H,.<;L_5MENT ‘ET AL _ WI'RE'STRINGING MACHINE‘ Filed Aug. 7, ‘1944 - 2,413,909 4 Shéets-Sheet z' ' W9 9» 40 L84 H ' FIG. ' 3 ‘84 f INVENZ'ORS ; TM , Z5’ Jan. 7, 1947.‘ c. H. CLEMENT ETAL 2,413,909 WIRE STI'RINGING MACHINE _ Q ' Filed Aug. 7,- '1944 4 Sheets-Sheet 4 FIG. Maj/r095 z? ‘W V Patented Jan. v7, ‘1947 2,413,909 UNITED STATES PATENT OFFICE 2,413,909 ‘ 'wrna-s'rnmomo- MACHINE Clyde H. Clement andFRobert H. Armstrong, . Phoenix, Ariz. ApplicationAugust 7, 1944,’Ser'ial No. 548,482 1 Claim. (Cl. 175-376) 1 2 This invention relates to wire stringers of the ' type adapted to place and string power line wires on overhead poles for transmission of electricity. Heretofore, line wires have been placed and strung by ?rst unreeling the wire on the ground parallel with the‘ line of poles; then elevating the wire to the cross arms; then stretching and tightening the wire, one-half mile or so at a time,‘ while climbers goup each pole included in the stretch and fasten the wire to the insulators on the cross-arms. This operation requires a Figure 2, a plan view of the bed and mecha nism with the upper portion of the stringingi tower‘ sectioned off to show construction be neath it. Figure 3, a cross-sectional elevation taken sub stantially on line 3--3 of Figure 2, and drawn on a slightly larger scale. Figure 4, a plan view of the stringing tower and boom extending beyond the edge of the plan 10 view Fig. 2. Figure 5, a plan view of the reel control mech rather large crew, and the work is necessarily anism. slow due to the delay in climbing the poles, the Figure 6, is a side elevation of a paying out delay in securing the correct sag between poles, sheave; drawn on an enlarged scale; and the fact that only one wire may be stretched 15 Figure 7, an elevation of a detachable Wheel at one time, and axle support; and ‘In view of this, one of the objects of our in Figure 8, an elevational section of the tower vention is to provide a mobile platform adapted support drawn on an enlarged scale. to support wire reelsand two towers, one for Similar numerals refer to similar parts in the stretching the wire at an elevation equal to or 20 several views: above pole height, and the other supporting a The ‘vehic1e‘2, is in this instance, represented platform high enough so that ‘workmen on the as a trailer consisting of a bed ‘3 supported by platform will be within easy reach of the cross wheels 4 and 5. arm insulators. vided with knuckle joints 6 joined by rod ‘I and A further object, is to provide a mobile string ing platform holding wire reels and provided with elevated towers so that wires may be strung directly over the insulators from pole to pole, drawn to proper tension, and immediately fas The forward Wheels 4 are pro 25 the draw bar 8 is pivoted and connected to turn these wheels according to the direction in which the vehicle is drawn. Ordinarily, the bed is about 8.feet wide and 32feet long, and the axles 9 and 10 supporting these wheels are 16 feet tened. ‘ 30 wide. The bedis positioned on the right hand A still further object is to provide a vehicle portion of these axles. The left hand wheels are adapted to be run parallel'toia line of poles, hav made in the form of steel drums, provided with ing a platform carrying a plurality of wire reels, ?llings and draining outlets, H and l2,.respec mechanism for paying out wire at a given rate, tively. Water is added to these when necessary tensioning the wire or reeling it in, together with an elevated stringing tower having an over hanging boom adapted to place string and'ten sion a plurality of wires in position on pole cross~ arms, and a workman’s platform elevated to ap to act as ballast. The axles Band l9 are attached by bolts 13 to under supports I'5, beneath bed 3, so that they may be removed and replaced by other axles and wheels for road travel. Kingpin turn plates 16 proximately insulator height, and adapted to be 40 are also provided at the ends of the bed for at— swung from an alined position to a transverse I tachinent to a half truck at one end and a two position across the pole line; all parts being ar- ‘- wheeled pole trailer at the other. ranged so that, as the vehicle is driven past a . The pole, the wires maybe laid adjacent their proper grouped generally ‘as follows: At the front is a bed carries wire stringing machinery insulators, and the workman’s platform maybe 45 telescoping ‘stringing tower 20 carrying a boom swung to a position within easy reach ‘of the in sulators. Then, as the wires are stretched to 21. Behind this are reels and reel racks 23 ‘which are controlled by the paying out and reel proper tension, they may be directly and imme ing .in mechanism‘zll driveng'by engine 26, at the diately fastened to the insulators and the ‘vehicle .rear is atelescoping lineman’s tower 21. moved to the next pole. , Other objects will appear ‘hereinafter. We at tain'the foregoing objects by lmeans of thema chine, construction and devices illustrated in the accompanying drawings in which: 50 Both towers ‘are braced laterally and longitu EdinaLlly and boom 2| is particularly braced, to take'the strain ‘imposed upon it, by stay 28 ‘tight ened by-winch‘ 29. ' The stringing tower is composed of a ‘lower Figure 1 ‘is 'a side ‘elevation ‘of the machine. 55 ?xed portion ‘consisting of ‘two ‘laterally spaced 2,413,909 steel tubes, 30. An extensible portion working between these tubes, also composed of two steel tubes 3|, forms the upper part of the tower. Guide blocks 32 and 33 welded to tubes 30 pro vide slide ways for tubes 3| and afford means for telescoping the two portions of the tower. Tubes 3| are welded to spacing blocks 34 at their uper and lower ends. ' The lower portion of this tower is braced lat erally by stays 35, and longitudinally by com pression braces 36 and 31. The ends of these members as well as the foot piece 38, on the bot tom of this portion of the tower, are secured by 4 shafts 82 supported on bearings 83 at the lend end and by hollow shafts 86 at the right. Plates 85, having projecting pins 89 adapted to engage in holes in the ends of each spool are carried on shaft 86 into which the removable shafts 82 fit. The two shafts are joined by thru bolts 81. When a spool is to be changed bolt 81, on its shaft, is removed and its shaft 82 pulled out to the left. Filler block 88 is then removed 10 and the spool 88 slid to the left to disengage pins 69 on plate 85. ‘When the new spool is remounted ‘it is held against plate 85 by block 88. The pins 89 lock the spool to plate 86 on shaft 86 and ?ller block 88 checks the spool against the plate. All spools may then be controlled by paying out and reeling mechanism to suit conditions of stringing. This is done by controlling shafts 86. These shafts may be rotated in either direction pins 39, running thru suitable blocks 48 on bed 3 to afford means for detachment and erection of the tower. The upper portion of the tower is braced lon gitudinally by the extensible truss 4| formed by thru gear shift boxes 90. The center or driving a cable attached at its top running over the spreader 42 and tightened by the winch 43 at the 20 shafts of the group receives power thru shaft 9|, directly from engine drive shaft 92. The outer bottom. shafts are driven by means of chains 93 and 94. The horizontal, transversely extending, boom The engine 26 drives shaft 92 thru gear shift 95 2| is supported in upper block 34 at the top of in either direction and at varying speeds. Cat tubes 3|. Its longer arm extends out over the head 96 is placed on shaft 82 for general utility right hand side of bed 3 as shown in Fig. 4 and purposes, and is not necessarily connected with is prevented from swinging to the rear by cable the reeling mechanism. A brake 91 is placed on 28 attached to its left end. The lineman’s plat each of the reel supporting shafts 86. This is form tower 21 is constructed in much the same simply constructed by a spring tensioned looped manner. Two steel tubes 58 are separated by portion of a belt running over a V pulley keyed blocks 5| and removably attached to the bed 3. These tubes are braced laterally of bed 3 by tubes to the shaft. With this mechanism it is possible to control 52, and longitudinally of bed 3 by braces 53. A all spools as a group by means of shift 95, or pair of tubes 54 joined at their ends slide in any one or two by their individual shifts 98. blocks 5| between the outer tubes to attain a telescoping effect. On the upper portion of 35 Snarling is prevented by brakes 91, and wire ten sion by the brake loaded sheaves 13, 14 and 15. these tubes two circular plates 55 comprise bear The brakes on these latter are made similarly ings to support cylinder 63 to which is attached to brakes 91 using a V pulley and a loopof V platform 56. Rings 64 within this cylinder turn belting fastened at the base at one end, and held on these plates. Telescoping action is obtained taut by a spring at the other. by a cable 51 which is attached to the upper The machine is assembled by erecting both block 5| on tubes 58, passes under a sheave not towers and extending the upper portions to the shown at the lower end of tubes 54,- and is at height desired. This includes operation of ele tached to a hand winch 55 on lineman’s plat vation winch 66, truss winch 46; and elevation form 56. The pivotal position of the platform is winch 55. The stringing boom is then tensioned controlled by a crank and gear 58 on the plat by winch 29. Full spools are placed on their form acting on a crowngear 59 attached just respective shafts and the wire wrapped one turn above the upper supporting plate 55 on tubes over the tension sheaves 13, 14 and 15, thence 54. The platform 56 includes a rectangular ?oor over the bending sheaves 19, 1| and 12, and lastly 60 attached to the lower portion of the cylinder over the stringing sheaves 61, 68 and 69. The 63 and a railing 6| attached to the upper end wire is indicated by. dotted lines 98 in Figs. 3 and of this cylinder. 4. Wheels 4 and '5 may then be ?lled with water The forward or boom carrying tubes, are given ballast and the whole machine towed along a line telescopic action by a cable 45 attached to their of poles to be strung. lower ends, running up over a sheavev46 on top Bed 2 is run so that the stringing sheaves run of tubes 30 and down to a hand operated ratchet over the tops of the poles with the sheaves paying winch 66. ' out the wires to be strung in alined position with Boom 2| carries three stringing sheaves 61, 68 the insulators |0|, I02, I83, on pole I88. The and 69 on its outer right hand portion, these sheaves are adjusted along boom 2|, accordingly. are positioned relative to bending, sheaves num bered 16, ‘H and 12, respectively, and these‘ lat ter are positioned in proper position relative to three paying out or brake sheaves 13, 14 and 60 After the wires are anchored to an end pole the device is drawn to a point just beyond the next pole and stopped. Each wire, or all wires, as nec essary are‘drawn to proper tension; the lineman’s 15, supported on a transverse shaft 16 attached platform is then swung around to a position in by a suitable bracket to the lower part of tubes 65 front of the pole just passed, and a workman on 38. the platform ties the Wires to the insulators. The The device here illustrated is adapted to string device is then drawn ahead to the next pole and three wires at one time. Wire of the type here the operation repeated. Thus the wires are ten concerned comes wound on spools 88 ofaffairly sioned and tightened as theyare strung from pole uniform size. These spools mustbe supported to so that the wirefwill vunwind evenly, passing over the paying out. sheaves 13,14 and 15,. and so that they are held against unwanted free rotation such as would allow snarling. To support these pole. - ~ _ To thosefamiliar with the art it will be at once apparent that a great deal of time and labor is saved by this method. Obviously where the ground is rough and broken the machine cannot spools ‘there are three removable longitudinal 7.5 be used. Its useis-con?ned to long level stretches 2,413,909 5 6 of terrain where a wheeled trailer, such as de scribed, can be drawn. In these areas the mech the forward end of said bed, a stringing boom attached to the top of said tower, having means for bracing and adapted to extend laterally be yond the side of said bed, a telescoping line man’s tower attached to the rear of said bed, a platform pivotally mounted thereon having con anism also adapts itself to reeling in lines that are to be taken down. The method is the reverse of the stringing process, and wire is not spoiled by cha?ng and snarling as when laid on the ground. Since many changes and modi?cations may suggest themselves to those familiar with the art, we wish to be limited only by the following claim. We claim: ‘ The wire stringing machinery, including in combination a wheeled vehicle, having axles with ballastable wheels laterally offset from said ve hicle body, a bed removably and adjustably mounted thereon, and adapted for trailer trans port, a telescoping stringing tower mounted at trol mechanism thereon for controlling the piv otal position and elevation of said platform, and wife handling mechanism positioned on, said bed, including removable wire reels, mechanism in cluding a power unit for rotating said reels, means for brake controlling said reels, independent of said power plant, brake controlled paying out sheaves, and stringing sheaves, adjustably mount ed on said stringing boom. CLYDE H. CLEMENT. ROBERT H. ARMSTRONG.