Patent GB-709968-A (GB)
Title: Lashing machine for aerial cables
IPC: H02G7/10
Filed: 1952-01-30
Abstract: 709,968. Erecting cables. NEALE, D. J. Jan. 30, 1952, No. 2509/52. Class 36. A machine for lashing one or more aerial cables A, B, C to a messenger wire D comprises a trolley with a longitudinal passageway through which the cables and messenger pass, a spinning head supported by the trolley for rotation about the axis of the passageway, and a pair of guide rollers at each end of the passageway having axes diverging from a point below, and in direct alignment with a trolley wheel, and forming a V-shaped support for the cable. The trolley is provided with wheels which roll along the messenger, and the spinning head is provided with means. for supporting one or more coils of. lashing wire E, F, and with driving means which are actuated by paying the lashing wire from the supporting means. A tension wheel is adjustably supported on the trolley to adjust the tension of the lashing wire to maintain a uniform drive of the spinning head. The machine includes a trolley (Fig. 5), comprising a cylindrical body 3 forming a longitudinal passageway 4 and having end flanges 5, 6, carrying annular heads 7, 8. A longitudinal gap 9 in the body 3 is in line with openings 10, 11 in heads 7, 8. The shaft 16 of a trolley wheel 15 is mounted in bearings carried by extensions 13, 14 of a flange 12 on head 8 (Fig. 8). One end of the shaft carries a ratchet wheel 18 which is normally engaged by a pawl 21 which permits rotation of the trolley wheel in a forward direction but not in reverse. The head 8 carries brackets 34, 35, pivotally mounted on opposite sides of the passageway, which support rollers 43, 44, which form a V-shaped cable guide. The brackets are held in a closed position against the action of springs 45 by latches 48. The rear head 7 (Fig. 9) carries guides 55, 56 which slidably retain flanges 59 of bracket 60 which carries a freely rotatable trolley wheel 61. Toothed levers 63 on bracket 60 are normally held in engagement with ratchet teeth on the guides 55, 56 by springs. The rear end of the trolley is closed by an arcuate gate 70, which is pivoted at 7 1 and held closed by a latch 72. A slide plate 87, held by guides 91, 92 carried by gate 70, carries rollers 79, 80. The guides have ratchet teeth which are engaged by teeth on pawls 96, 97, pivotally mounted on plate 87. A.spinning head 106 (Fig. 5) is mounted about the trolley, the longitudinally slotted casing 107 thereof terminating in inwardly extending flanges 108, 109. The flange 108 carries a track 115 supported on a plurality of circumferentially arranged rollers 116 carried on the end plate 7 of the trolley. Flange 109 carries a similar track 120 of larger diameter supported by circumferentially arranged rollers 121 carried on the end plate 8. The housing 107 is formed with two diametrically opposed recesses 123 (Fig. 1) in which reels 127 carrying the lashing wires are mounted. The wires pass over eccentrically mounted guide pulleys 135 and pulleys 142 which are in driving relation with friction wheels 147 which engage a track 148. This track is extended across the gap in the end plate by an arcuate segment attached to the inner face of gate 70. The front of the machine is covered by housing 157 having an end opening 159 and gap 160 registering with the passageway 4 and gap 9 in the trolley. The housing carries an adjustable messenger guide 161 having a forked end 167 that straddles the messenger. The housing 107 is provided with a recess 168 and handle 169 in which is mounted lever 170. Raising this lever pushes a bolt 171 into a socket 173 in head 8 (Fig. 5), thus locking the spinning head against rotation. To apply the machine to the wires, latches 48 and 72 are released, permitting brackets 34, 35 and gate 70 to swing open, so that the entire machine may be placed over the messenger and the temporarily attached cables, the trolley wheels 15 and 6 being placed on the messenger. Brackets 34, 35 and gate 70 are then closed and latched so that the cables are supported by rollers 43, 44 and 79, 80, and the positions of wheel 61 and rollers 79, 8o are adjusted by means of slides 59 and 87. The free ends of spinning wires E, F are secured to the cables and lever 170 depressed to release bolt 171. The machine is drawn along the messenger by a rope 68, the draft on the spinning wires causing pulleys 142 to rotate. This causes the friction wheels to roll along track 148 and effect rotation of the spinning head.