Patent GB-836417-A (GB)
Title: Improvements relating to marking articles
Inventor: DOLMAN HENRY JAMES
IPC: B65C5/04
Filed: 1956-06-25
Abstract: 836,417. Applying adhesive tabs to textile articles. POLYMARK Ltd. June 21, 1957 [June 25, 1956], No. 19575/56. Class 73. A machine for affixing adhesive tabs to textile articles comprises an article supporting arm 13, Figs. 2, 8, pivoted for movement from an inclined article loading position to a vertical pressing position beneath a fixed or vertically movable heated presser 14, a movable presser 18 being mounted in the arm 13 for radial movement outward thereof to press the article against the presser 14, and gripper means being provided to feed a tab to a position overlying the presser 18 and article thereon prior to the pressing operation. Lateral arms 213, Fig. 8, on the arm 13 assist in providing support for the article which in the pressing position is gripped by a pivoted presser bar 15. A strip of tape 23 is fed by rollers 24, 25, Fig. 2 and a tab 71 cut off by cutter blades 90, 91. This tab 71 is then taken by a rotary gripper 50, Fig. 3, from the cutting position C through 90 degrees to a position A for printing thereon by a printing mechanism 158, Fig. 8, and from there to a position B overlying the presser 18. During movement from position A to position B a small quantity of solvent is sprayed on the tab for activating the thermoplastic material thereof or thereon. At position B a lever 26 is actuated by cam mechanism to effect outward movement of the presser 18 and adhesion of the tab to the article. Each cycle of operations is initiated by movement of the arm 13 to the pressing position, such movement acting through levers 33, 34, pawl 37 and ratchet wheel 40 to rotate the clutch plate 36 of a one-revolution clutch and its associated shaft 32, from a continuously rotating drive shaft. The gripper 50 which is driven from the main shaft 32 through gearing and Geneva drive mechanism 52, 53, 54, Fig. 3, comprises a fixed outwardly directed bottom gripper jaw 501 and an upper displaceable gripper jaw 502 which projects obliquely from a rotatable shank member 503 carrying an upwardly projecting arm 505 adapted to bear against a cam 69 fixed on a stub shaft 65 around which the gripper rotates. Cam faces on the cam 69 are adapted through the arm 505 to rotate the shank 503 and open and ;close the gripper jaws at appropriate times in the cycle of operations. During each cycle a cam 88, Fig. 2 on the main shaft 32 operates through a bell-crank lever 86, link 85, rocker 84, pawl 83 and ratchet wheel 82 to impart a small angumovement to the feed roll 25 to feed a small length of tape forwardly to the cutter. The cutter comprises a fixed knife blade 90 positioned in front of the feed roll 25 and co-operating with a movable blade 91 actuated by a plunger 92, Fig. 5 (not shown) which in turn is actuated by a cam on the main shaft 32. A solvent tank 120 Fig. 1 (not shown) and a feed pump 121 permits solvent to be sprayed on the tab during its passage from the printing to applying positions by means of a pipe 126 or from a spray nozzle at the base of a cup located beneath the tab. A counter 141, Figs. 2, 8, records the total number of operations of the machine and is actuated by a depending lever 142 engageable by an arm 143 projecting from a sleeve 144 carrying the non-return pawl 47 engaging the clutch plate 36.