Patent GB-190904691-A (GB)
Title: Improvements in Tag or Label Stringing Machines.
Inventor: SAVILLE ROBERT
IPC: D05B5/00
Filed: 1909-02-25
Granted: 1910-02-25
Abstract: 4691. Saville, R., and Hudson, B. Feb. 25. Making labels.- Relates to the general construction of a machine for stringing tags or labels. The labels 1 are fed from a pile by a reciprocating feeder, actuated from a cam shaft 25, Fig. 1, and having a recessed plate which engages with the strengthening-washers situated round the eyelets of the labels. When the eyelet of the label arrives beneath a needle 10, the label is held by a clamp 8 under the influence of a spring 45, the tension of which is adjustable. The needle then descends and takes the string through the eyelet 9 as shown in Fig. 12, the free end of the string 11 being held up by a pivoted string catch 67. The needle then rises slightly to form a loop 13, which is then opened out by a looper 15, 16 as shown in Fig. 13. The looper consists of an arm 15 pivoted to a camcontrolled lever 81, Fig. 1, a duplicate arm of spring material being connected at one end to the arm 15. A pin on the spring arm passes through a slot 89 in the arm 15, and engages with a camsurface on the upper end of the lever 81 to cause the looper arms to be spread apart, as shown in Fig. 13, while they are rising under the action of a roller 92 rolling on a cam-surface 93, 94. The needle then rises, and a gripper 17 passes through the loop and seizes the double string beneath the needle and draws it through the loop, which is then drawn tight as shown in Fig. 15. The gripper consists of a fixed arm 17, Fig. 15, coacting with a pivoted arm 121, Fig. 1, and is mounted on a reciprocating carriage 99, racks 120 on which engage with pinions on one shaft with other pinions which are reciprocated over fixed racks 116 by a rod 110, lever 107, connecting-rods 105, and cranks on the shaft 25. When the gripper commences to retire, it is slightly open, as shown in Fig. 2**, to allow the string to run through, but, on arriving at the position shown in Fig. 15, the string is cut by shears 18 and the grippers close tighly and draw the label away in readiness for the next to be fed up to the needle. The thread catch 67 has meanwhile been swung outwardly to release the string and back again to hold np the free end on the descent of the needle. The shears 18, Fig. 1, are pivoted to a bracket 151 carried by arms pivoted to a bracket 166 mounted on the carriage 99, and are moved out of the path of the grippers by means of an arm 167 rocked by a cam-plate 173. The shears are operated to cut the string by the depression of a rod 154 by a camplate 175. When released by the gripper, the labels fall into a receptacle, or on to a band 176 which travels forwards intermittently after a definite number of labels have dropped into a pile. This may be effected by operating the drum over which the band passes by means of two ratchetwheels 180, 181 having, for instance, sixteen teeth and one tooth only respectively, and operated by pawls reciprocated by a rod 184. Every revolution of the large ratchet-wheel 180 brings the tooth of the small ratchet-wheel into engagement with its pawl and causes the drum to be turned through a space corresponding to, for instance, four teeth of the ratchet - wheel 180. According to the Provisional Specification, a device may be employed to prevent the operation of the needle or other parts if no label is present beneath the needle.