Machine for working glass tubes and in particular for making containers from glass tubes

A machine for working glass tubes, with several chucks circulating on a common axis and sweeping past several processing stations, there being mounted above each chuck a stepwise rotating magazine storing several glass tubes, each tube resting by its lower end on a non-rotating supporting plate which has a hole for the glass tubes to fall through for engagement by the chuck therebelow, the machine having a switch which causes the magazine to rotate, one step at a time, each step corresponding to the distance between two neighbouring tubes, in order to bring the hole of the supporting plate and the chuck therebelow there is a mobile arrestor blade which allows the magazine to rotate stepwise without a tube falling through the hole, until the chuck is empty, whereupon the blade can disengage so that it no longer blocks the hole;

• wherein said arrestor blade comprises a pivoted lever which can be rotated into its blocking position, against the influence of a return spring, during each one-step rotation of the magazine.

A machine for working glass tubes, including several chucks circulating on a common axis and sweeping past several processing stations, said machine comprising a stepwise rotating magazine storing several glass tubes, each of said tubes resting by its lower end on a non-rotating supporting plate which has a hole for the glass tubes to fall through for engagement by the chuck therebelow, said stepwise rotating magazine mounted above each of said chucks, said machine having means for rotating said magazine one step at a time, each step corresponding to the distance between two neighbouring tubes to bring the next glass tube to the hole, and a switch, said switch cooperating with said means for rotating said magazine, a mobile arrestor blade positioned between the hole of the supporting plate and said chuck therebelow, means for moving said mobile arrestor blade, wherein said arrestor blade cooperates with said means for moving said arrestor blade to block said hole in said supporting plate to prevent one of said tubes from falling through said hole in said supporting plate until said chuck is empty, and means for disengaging said arrestor blade so that it no longer blocks said hole when said chuck is empty.

In a machine for working glass tubes of the type including several chucks circulating on a common axis and sweeping past several processing stations, said machine comprising a stepwise rotating magazine storing several glass tubes, each of said tubes resting by its lower end on a non-rotating supporting plate which has a hole for the glass tubes to fall through for engagement by the chuck therebelow, said stepwise rotating magazine mounted above each of said chucks, said machine having means for rotating said magazine one step at a time, each step corresponding to the distance between two neighbouring tubes to bring the next glass tube to the hole, and a switch, said switch cooperating with said means for rotating said magazine, the improvement comprising a mobile arrestor blade positioned between the hole of the supporting plate and said chuck therebelow, means for rotating said mobile arrestor blade, wherein said arrestor blade cooperates with said means for rotating said arrestor blade stepwise to block said hole in said supporting plate to prevent one of said tubes from falling through said hole in said supporting plate until said chuck is empty, and means for disengaging said arrestor blade so that it no longer blocks said hole when said chuck is empty.

In a machine for working glass tubes of the type including several chucks circulating on a common axis and sweeping past several processing stations, said machine comprising a stepwise rotating magazine storing several glass tubes, each of said tubes resting by its lower end on a non-rotating supporting plate which has a hole for the glass tubes to fall through for engagement by the chuck therebelow, said stepwise rotating magazine mounted above each of said chucks, said machine having means for rotating said magazine one step at a time, each step corresponding to the distance between two neighbouring tubes to bring the next glass tube to the hole, and a switch, said switch cooperating with said means for rotating said magazine, the improvement comprising a mobile arrestor blade positioned between the hole of the supporting plate and said chuck therebelow, means for moving said mobile arrestor blade, wherein said arrestor blade cooperates with said means for moving said arrestor blade to block said hole in said supporting plate to prevent one of said tubes from falling through said hole in said supporting plate until said chuck is empty, and means for disengaging said arrestor blade so that it no longer blocks said hole when said chuck is empty.