Patent GB-191223431-A (GB)
Title: Improvements in Machinery or Apparatus for the Manufacture of Woven Wire Material, specially suitable for use as Wire Fencing, Reinforcement for Concrete or the like.
Inventor: CLARKE HAROLD ALBERT
IPC: B21F27/06
Filed: 1912-10-14
Granted: 1913-10-09
Abstract: 23,431. Clarke, H. A. Oct. 14. Making metal fabrics; coiling; bending-dies; winding and reeling.-In a machine for making wire fabrics for fencing, reinforcement for concrete, or the like, the weft wires which are cut to length so as to span and be coiled at their ends around adjacent warp wires are fed so that alternate weft wires come on opposite sides of the warp wires. The weft wires are stored in containers 68, 69 which may have adjustable divisions to suit wires of different lengths, or a series of containers may be used. The wires are transferred by grooved oscillating shafts 43, 44 and inclined shoots 71, 72 to opposite sides of the warp wires, which pass through holes or slots 63 in a series of twisters formed in two parts 58, 59, Fig. 5, connected by dowel pins 60 and pressed apart by springs. The twisting-head is formed with a pair of grooves 67 to receive the wires, two triangular portions c level with the top of the head, and two portions d which are inclined from the portions c; the edge g also slopes downwards from f to e so that the points e are on a level with the bottom of the grooves, for the purpose of allowing the wire to slide up the inclined surface and so over the adjacent wire in the operation of twisting, as shown in Fig. 9. Alternate heads have oppositely - arranged grooves and are rotated in opposite directions by pinions 64 mounted on the portions 59, which may gear with each other and be operated at intervals by pinions 65 driven by bevel-gear from the shaft 52. Each gear wheel 64 may be separately driven through a separate pinion 65. The twister heads and their driving mechanism are adjustable to suit the pitch of the warp wires. The shafts 43, 44 are oscillated by arms mounted thereon and connected by rods to an arm on the shaft 39, which is oscillated by bell-crank levers 38 through eccentrics 34 on the shaft 27. A slotted recessed bar 42 with V-shaped notches to engage the warp wires is reciprocated over the heads by the levers 38, so that the wires may be inserted and prevented during twisting from being displaced from the heads. When the notches at one side become worn, the slide may be reversed and the other notches used. The machine is driven by a shaft 31 which carries mutilated gears at each end, one of which 30, Fig. 2, has toothed portions A B and C D so as to give during each rotation two half-revolutions to the shaft 27, and the other gear wheel having teeth to rotate the twister heads during the inoperative motion of the wheel 30. The shaft 31 also carries a disk 32 having a pin 33 which periodically engages a spring - pressed lever 23, so that through levers 24, 25 a clutch is engaged on a shaft 5 rotated by belt gear so as to connect it by gear to the winding-drum 4, which is rotated an amount equal to the pitch of the weft wires between each operation. The warp wires are carried over a drum 16 and over feed wheels 20 which are provided with pegs 21 normally engaging a projection 22 on the lever 23, when the drum 4 is stationary.