US 6,499,273 B1
Machine for attaching a tag to an infusion bag using an intermediate knotted thread
Paolo Marzocchi,
Castel S. Pietro Terme (Italy)
Assigned to I.M.A. Industria Macchine Automatiche S.p.A.,
Bologna (Italy)
Filed on 27-Feb-2001, as Appl. No. I.M.A. Industria Macchine Automatiche S.p.A.,
Bologna (Italy)
Int. Cl.7B65B 29/04
U.S. Cl. 53-413
42 Claims
US 6,499,273 B1
Machine for attaching a tag to an infusion bag using an intermediate knotted thread
Paolo Marzocchi,
Castel S. Pietro Terme (Italy)
Assigned to I.M.A. Industria Macchine Automatiche S.p.A.,
Bologna (Italy)
Appl. No. 9/530,806PCT Filed Sep. 16, 1999, PCT No. PCT/IB99/01550PCT Pub. No. WO00/17055, PCT Pub. Date Mar. 30, 2000.
Claims priority of application No. B098A0536 (IT), filed on Sep. 18, 1998.
Int. Cl.7B65B 29/04
U.S. Cl. 538212;413
42 Claims
1. A machine for making filter bags containing a product for infusion, having a pick-up tag connected to the top of the filter
bag by an intermediate thread, said machine comprising a wheel which rotates with a stepping motion about its own axis of
rotation, being equipped with grippers, the wheel bringing the grippers into contact with a series of operating stations,
comprising at least one station for folding a tubular semi-finished product containing the product for infusion, and at least
one station for knotting the thread, the machine further comprising thread feed means which operate on the thread fed between
pairs of the grippers positioned one after another along the edge of the wheel; said feed means presenting a fork with extended
teeth angled parallel with the axis of rotation of the wheel, the fork being supported by an arm which oscillates between
a home position, in which the teeth are outside the wheel, and an operating position, in which the teeth are between two consecutive
grippers on the wheel.