Patent GB-191226172-A (GB)
Title: Improvements in Machines or Apparatus for Weaving Wire Mattresses and the like.
Inventor: ANDERSON JOHN
IPC: B21F27/16
Filed: 1913-05-13
Granted: 1914-05-13
Abstract: 26,172. Anderson, J. May 13, 1913. Coiling; shearing-adjuncts.-In a machine for making wire mattresses &c. from multiple strand coils of the kind in which the friction clutch for controlling the feed and cut-off mechanism is operated by a cam, the ends of the strands of the succeeding coil are clamped by a gripping-device and twisted together by rotary gripping-jaws so as to prevent the strands from separating. The rolls 1, 2 which feed the wires to the giraffe 45 are mounted on shafts which are geared together, and on the lower of which is mounted a clutch comprising a fixed member 11 and a sliding member 9 formed in one with the driving pulley or chain-wheel 10. The clutch is disengaged after the desired length of coil is formed by a lever 17, which is oscillated on its pivot 18 by a spring 19, the lever being connected to the clutch-operating lever 12 by a bolt 16 through a spring 15. The lever 17 is held in normal position against the action of the spring by a spring-pressed pawl 20, which is released at the appropriate times by pins 23 on a star-wheel 24 driven by an inclined pinwheel 25 which is rotated by worm gear from the shaft of the lower feed-roll. When the clutch 9 is withdrawn, a roller 34 carried thereby is brought into alinement with a lever 35, which is thus pressed down against the action of a spring so as to operate the mechanism for severing, twisting the ends of the coils, and laterally feeding the coils. At the same time a rod 72 carried by the lever 35 engages a spring-pressed lever 30, which is pivoted to the lever 17 so that the roller 31 carried thereby is brought into the path of movement of a cam 32 carried by the clutch sleeve so that after the severing, twisting, and lateral feeding operations are accomplished the clutch sleeve 9 is returned into engagement with the fixed member 11 to resume the coiling operation. The lever 35 is held in its lowermost position by a catch which may be pivoted to the base-plate and held in position by a spring and disengaged by means such as a pin on the lever 17. The wires are severed by shear members 57, 59, the member 59 being operated by a plate 54, Fig. 5, which is oscillated on its pivot 55 by a lever 56 carried by the lever 35. The wires on passing from the guide 44 are gripped against a projection 43 by a lever 42 mounted between springs on a rod 40 carried by a bracket 41 on the lever 35, and the ends of the succeeding coils are twisted together by jaws 51, 52 carried by a bevel-wheel 50, the jaw 52 being closed by a spring 53, Fig. 8, carried in a recess in the bevel-wheel 50 and engaged by the plate 54. The bevel-wheel 50 is rotated by a bevel-wheel 60 on a shaft 61, which is put into connexion with a spur-wheel 66 connected by gearing to the clutch sleeve 9, by projections 65, 64, the projection 64 of which is carried by a collar feathered to the shaft 61 and controlled by a lever 67 engaging projections 69 on the lever 35. The lateral feed is effected by the lever 35, Fig. 4, through levers 79, 77, and a pawl 77, which oscillates a rubber-coated roller 76, and additional feeding - means may consist of a reciprocating bar 80 connected by levers 85, 84, 87 to the lever 35.