Turn table device

Claim 2

Apparatus for strapping objects in two directions, comprising a pair of strapping machines, and a turntable device between said machines, said turntable device comprisng a frame, a work table at the top of said frame, conveying means defining the top plane of said work table and adapted to convey an object from adjacent one said machine towards the other said machine, said work table further comprising a vertically movable cross stepwise rotatable about a vertical axis, said cross in its lower retracted position having its wings below the said top plane and in its upper operative position above said top plane, drive means for the stepwise rotation of said cross, said drive means being controlled by a switch having an actuating lever extending above said top plane, said drive means comprising a friction disc rotatably mounted in the frame about a vertical axis and adapted to be continuously driven, a vertical shaft concentric with said disc, the upper end of said shaft carrying the cross, while the lower end carries a second friction disc having radially extending wings, means for moving said shaft upwardly to bring the second friction disc into engagement with the first friction disc and for moving said shaft downwardly to disengage the said friction discs, and a further switch which in the raised position of the shaft can be actuated by a said wing and when actuated controls the means for moving said shaft to move downwardly.

Claim 3

Apparatus as claimed in claim 1 in which in front of the switch a downwardly extending plate is pivotably suspended within the frame, which plate lies in the path of the wings when in their raised position and can actuate said further switch and which in its free downwardly hanging position is out of the vertical path of the adjacent wing which in its lower position is prevented to rotate with the shaft by guide pins.

Claim 4

Apparatus as claimed in claim 1, said switch being mounted upstream of said cross and being in a control circuit such that the drive means are put into operation for lifting and rotating the cross when the said switch is released by an object upon the work table.

Claim 5

Apparatus for strapping objects in two directions, comprising a pair of strapping machines, and a turntable device between said machines, said turntable device comprising a frame, a work table at the top of said frame, conveying means defining the top plane of said work table and adapted to convey an object from adjacent one said machine towards the other said machine, said work table further comprising a vertically movable cross stepwise rotatable about a vertical axis, said cross in its lower retracted position having its wings below the said top plane and in its upper operative position above said top plane, drive means for the stepwise rotation of said cross, said drive means being controlled a switch having an actuating lever extending above said top plane, said switch being mounted upstream of said cross and being in a control circuit such that the drive means are put into operation for lifting and rotating the cross when the said switch is released by an object upon the work table, retractable abutment pins in the work table located downstream of the cross, a still further switch having an actuating lever extending above said top plane and located downstream of said abutment pins, said circuit being such that the abutment pins will extend above said top plane as soon as an object completes its rotation but only if a preceding object is depressing the actuating levEr of the said further switch and will retract below said plane when said still further switch is released, and upstream mounted separate supply conveyor means having drive means connected to said control circuit of the apparatus such that said drive means cannot be re-energized when said still further switch is depressed.

Claim 6

Apparatus for strapping objects in two directions, comprising a pair of strapping machines, and a turntable device between said machines, said turntable device comprising a frame, a work table at the top of said frame, conveying means defining the top plane of said work table and adapted to convey an object from adjacent one said machine towards the other said machine, said work table further comprising a vertically movable cross stepwise rotatable about a vertical axis, said cross in its lower retracted position having its wings below the said top plane and in its upper operative position above said top plane, drive means for the stepwise rotation of said cross, said drive means being controlled a switch having an actuating lever extending above said top plane, said switch being mounted upstream of said cross and being in a control circuit such that the drive means are put into operation for lifting and rotating the cross when the said switch is released by an object upon the work table, retractable abutment pins in the work table located downstream of the cross, a still further switch having an actuating lever extending above said top plane and located downstream of said abutment pins, said circuit being such that the abutment pins will extend above said top plane as soon as an object completes its rotation but only if a preceding object is depressing the actuating levEr of the said further switch and will retract below said plane when said still further switch is released, and upstream mounted separate supply conveyor means having drive means connected to said control circuit of the apparatus such that said drive means cannot be re-energized when said still further switch is depressed.