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AssigneeLagan Press AB
InventorsKlas Axel Lennart Skoglund, Stig Gunnar Bengt Backgard
Estimating the term…
A mechanical safety device for the reciprocating plunger in downwardly acting presses such as a downstroke or eccentric type, in which the plunger is connected to the piston rod of the press cylinder or to the eccentric. A stopping rod is immovably fixed on the plunger and extends vertically upwardly from the plunger and through a stopping sleeve rotatably mounted on a housing fixedly retained on the press. The rod and the sleeve have cooperating threads, the threads on the rod being divided into at least two sections and the threads on the sleeve being divided into as many sections as the threads on the rod and being spaced by arcuate surfaces. In a first rotary position of the sleeve, the threads engage with each other for stopping the plunger, and in a second rotary position of the sleeve, the threads are moved out of engagement with each other for permitting movement of the rod through the sleeve and thereby movement of the plunger.
In a mechanical safety device for the reciprocating plunger in downwardly acting presses, the improvement comprising a stopping rod immovably fixed on the plunger and extending vertically upwardly from the plunger, a stopping sleeve rotatably mounted on a fixed portion of the press and positioned such that the rod passes therethrough, the rod and sleeve having cooperating members which, in a first rotary position of the sleeve, engage with each other for stopping the plunger, and, in a second rotary position of the sleeve, are moved out of engagement with each other to permit movement of the rod through the sleeve and thereby movement of the plunger, and means for rotating the sleeve.
In a mechanical safety device for the reciprocating plunger in downwardly acting presses, the improvement comprising an upwardly directed stopping rod supported by the plunger, a stopping sleeve rotatably mounted on a fixed portion of the press, the sleeve positioned so that the rod extends therethrough, the rod and sleeve have co-operating threads which, in a first rotary position of the sleeve, engage with each other for stopping the plunger, and, in a second rotary position of the sleeve are moved out of engagement with each other to permit movement of the rod through the sleeve and thereby movement of the plunger, and means for rotating the sleeve.
Dependencies are inferred from the claim text.