GB387491A - A tie-connecting machine for flat wires, straps and the like - Google Patents

Abstract

387,491. Strapping bales &c. HARVEY, L. M., 1333, South Los Angeles Street, Los Angeles, U.S.A. Jan. 14, 1932, No. 1177. Convention date, Feb. 4, 1931. [Class 45.] A machine for producing a tie connection in the overlapping ends of a flat wire &c. by gripping the ends to be tied, tensioning the tie, deforming it by means of pressure dies and cutting off the excess portion of the tie, includes power means for successively bringing the various mechanisms into operation and a manually-operated control mechanism for bringing the power means into operative relation with those mechanisms to effect the tensioning, severance, and deformation of the flat wire &c. A motor 8 drives a shaft 11 through reduction gearing 10, a clutch pair 65, 66 being interposed between shafts 11, 11<1>. An operating handle 42, elevated above the position shown in Fig. 2, is spring-urged at 58. Portions 21, 22 of the flat tie are manually moved into superposed relationship beneath grip members 82, 94 and the surplus length of the tie 103 is manually moved into engagement with the tensioning device 112, 113. The handle 42 is now moved downwardly and through the systems 44, 50, 51, 52 ; 32 .. 36 partially closes the jaw 15 upon the jaw 14 to align the overlapping portions of the tie. Simultaneously the clutch 66, is thrown in through the system 59.. 63, 67, the bar 61 moving into locked relationship with a surface 71 on a latch 68 and a tongue 76 on the latch member moving into the path of a pin 75 carried on a cam 64 rotating with the shaft 111. The curved surface 128 of the cam 64 actuates a roller 126 carried by a sector 113 of the tensioning device. This device comprises two quadrants 112, 113 pivoted at 114 and normally held together by a spring 123 and another spring 122 which holds a roller 120 in a notch 117. A grip 130 pivoted at 131 on the sector 112, and spring-urged at 132, engages the surplus material 103 of the tie member which is tensioned until the pull of the spring 122 is overcome when the quadrants separate, quadrant 113 still moving under the urge of the cam 64. A spring-pressed friction gripper 78, pivoted at 79 yieldingly bears on the upper surface of portion 22 of the tie while further grips are provided at 85, 96, both grips being attached to spring-biassed levers the other ends of which 87, 98 bear on cam profiles on the upper surface of the jaw 15. The cams are arranged so that on the jaws closing in the preliminary manner set forth above the grips 85, 96 descend on to the tie member. During the tensioning operation the grip 85, being pawl governed, will allow of movement in one direction but not in the reverse. On completion of the tensioning operation a pivoted cutter 102, actuated by a cam 111 on the shaft 11<1> through a spring-biassed pivoted lever 104, severs the surplus portion 103 of the tie. The lever 133 contracting with the surface 138 relieves the grip 130, a spring-urged lever 135 returning the grip to its open position. The cam 31 carried by the shaft 11<1> then comes into operative relationship with roller 30 and closes the toggles 27, 28 whereby the jaws 14,.15 move inwardly to their final position to deform the overlapping tie portions. A pin 31<1> carried by the cam 31 then contacts with an extruding nose 27<1> on the member 27 to move the toggle 27, 28 to the open position. The latch 68 is then relieved by the pin 75 contacting with the nose 76 and the whole system returns to its original position under spring influence 58.