Abstract An apparatus for making profiled articles from an advancing strip of thermoplastic materials such as glass comprising a pair of spaced opposed forming elements which are supported on plates adapted for imparting reciprocatory movement to said forming elements both in a direction towards and away from one another and in a direction of advance of the strip. A rod is pivotably supported on the plates and is movable therewith, and a mandrel is secured to the rod to follow reciprocation of the plates in the direction of advance of the strip and to undergo pivotal movement with the rod. The mandrel is disposed between the forming elements and the advancing strip bent around the mandrel by the forming elements when the latter move towards one another. The rod is pivoted during reciprocatory movement thereof by engagement of a pin on a lever secured to the rod in an inclined guide slot in a fixed member. Such pivotal movement of the rod causes the mandrel first to press the thus bent strip against the forming elements and thereafter to retract therefrom and allow free passage of the thus formed strip.
An apparatus for making profiled articles from an advancing strip of thermoplastic material such as glass, said apparatus comprising a pair of spaced, opposed forming elements, plates supporting said forming elements for imparting reciprocatory movement thereto both in a direction towards and away from one another, and in the direction of advance of the strip, a rod pivotably supported on said plates and movable therewith, a mandrel secured to said rod to follow reciprocation of the plates in the direction of advance of the strip and to undergo pivotal movement with said rod, said mandrel being disposed between said forming elements so that the advancing strip is bent around the mandrel by said forming elements when the latter move towards one another, and means for pivoting said rod during reciprocatory movement thereof to cause the mandrel to be vertically displaced first to press the thus bent strip against said forming elements and thereafter to retract therefrom and allow free passage of the thus formed strip.
Claim 2
Independent Claim
165 words
An apparatus for making profiled articles from an advancing strip of thermoplastic material such as glass, said apparatus comprising a pair of spaced, opposed forming elements, plates supporting said forming elements for imparting reciprocatory movement thereto both in a direction towards and away from one another, and in the direction of advance of the strip, a rod pivotably supported on said plates and movable therewith, a mandrel secured to said rod to follow reciprocation of the plates in the direction of advance of the strip and to undergo pivotal movement with said rod, said mandrel being disposed between said forming elements so that the advancing strip is bent around the mandrel by said forming elements when the latter move towards one another, and means for pivoting said rod during reciprocatory movement thereof to cause the mandrel to be vertically displaced first to press the thus bent strip against said forming elements and thereafter to retract therefrom and allow free passage of the thus formed strip.
Claim 3
Dependent Claim
40 words
Apparatus as claimed in claim 1 wherein said means for pivoting said rod comprises a lever connected to said rod, a pin secured to said lever and a fixed member having an inclined guide slot in which said pin travels.
Claim 4
Dependent Claim
39 words
Apparatus as claimed in claim 2 wherein to obtain articles of open profile having a complex shape, said guide slot is inclined to the horizontal at an acute angle and extends in the direction of advance of the strip.
Claim 5
Dependent Claim
35 words
Apparatus as claimed in claim 2 wherein to obtain tubular articles, said guide slot is inclined to the horizontal at an acute angle and extends in a direction opposite to the advance of the strip.