Patent GB-191214333-A (GB)
Title: Improvements relating to Wire Bending Machines.
IPC: B21F43/00
Filed: 1912-06-19
Granted: 1913-05-01
Abstract: 14,333. Spirella Co., [Spirella Co.]. June 19. Making metal fabrics; bending - dies; winding and reeling.-In a machine of the type described in Specification 12,593/09, for bending wire into serpentine shape particularly for forming corset stays, the pins around which the wire is bent by oscillating fingers are mounted on carriers vertically reciprocated and also oscillated on an horizontal axis. The pins 85, 86, Figs. 5 and 11, may be secured in removable blocks 84 in their carriers 44, 45, Figs. 4 and 5, which are alternately raised and lowered in guides 43 mounted on pivots 42. The carriers may be held in contact with cams 48, 49 on the main shaft 11 by springs 52. Subsidiary compression springs may also be mounted between the bottoms of the guides 43 and the lower parts of the carriers. In a modification, grooved cams 48<a>, Fig. 8, are used, the rollers 47 at the ends of the carriers being carried on eccentric threaded studs 47<a> adjustable in the split ends of the carriers and clamped bv screws 47<b>. The cams 48, 49 oscillate the guides against a stop 100 fitted with removable liners, while the carriers are being raised, the return movement of the guides being effected by the bending-fingers 78, 79 and thus feeding the wire. The bending- fingers are secured by clamps 80 to plates 70, which are carried by sleeves 68, Fig. 5, on pivots 59 fixed by screws 66 in the split ends of blocks 58, which are secured to the plates 31, 32 by bolts 60 and may be laterally adjusted by the aid of springs 64, elongated slots 61, and stop screws 63. The fingers may be vertically adjusted to vary the concavity of the fabric by providing the side plates with slots fitting on screws 35 fixed to the frame, so that the plates may be adjusted by screws 37 mounted in lugs on the frame. The angular position of the plates 70 may be adjusted by connecting them by means of curved slots 76 to the pins 73 on the connecting-rods 74 which oscillate them through cranks 26, 27 mounted on shafts driven from the main shaft by bevel-gearing. The pins 85, 86 are situated under the notched ends of a pivoted presser foot 92 which clamps the loops against the carriers and the bending fingers are provided with inclined V- or U-shaped grooves in their ends, the upper walls of which have helical lips for carrying a loop as it is formed underneath a previously formed loop. The wire is passed through a block 104 provided with a pivoted cap 118, being oiled and cleaned by felt or other fibrous pads 133 and tensioned by verticallyadjustable members 115, 117, the latter of which is pressed down by a spring 119 against a screwstop. The wire then passes through an oscillatory guide 108 which is carried by a shaft 106 vertically adjustable by a screwed sleeve 105, which is mounted in a split portion of the block 104 and is clamped in position by a bolt 111. After the fabric is formed it passes along a grooved block 90 and is straightened by convex and concave plungers 136, 137, the latter of which is connected by a pin and slot 149 to a square sleeve 153, which is pressed down by a spring 150, and in the hollow end of which a spring 148 is mounted to prevent injury to the mechanism if the upper hammer is set down too far. The plunger 153 is operated by a cam 146 on a shaft 17 connected to the main shaft by spur gearing. The fabric is drawn through the machine by rolls 157, 161, the upper roll 161 being spring-mounted, and the lower roll being driven by worm gearing 166, bevel-gearing 171, 172, and spur gearing from the shaft 22. The fabric is wound on a reel 182 which is driven from the shaft 168 by worm gearing and a friction disk interposed between the reel and the worm wheel.