Parison feeding and delivering apparatus

Claim 1

In a parison feeding and delivering apparatus for uniformly heating parisons by delivering the same from outside a parison heating furnace into a parallel passage arranged in said furnace and lying in a zig zag line making several turns at both sides of said furnace, and which comprises a parison delivery conveyor consisting of two horizontal endless chains situated one above the other and having carrier pins vertically mounted thereto, an apparatus provided outside of the heating furnace for feeding parisons to said delivery conveyor, and a pluarlity of sprockets for keeping said endless chains in driven or rotating status, the improvement wherein: a driving shaft of the parison feeding apparatus and sprockets on chain turning positions at one side of the furnace are driven by the same driving means, other sprockets on chain turning positions at the other side of the furnace are held by sliding plates supported by guide means, said sliding plates being biased from outside of the furnace by wires leading to springs, said parison carrier pins are freely rotatable around the axes of the vertical connection pins, and rotatable teeth for rotating the pins mounted to said parison carrier pins are engaged with fixed linear teeth during passage along the chains after being aligned with the phase of the fixed linear teeth by way of a fixed spring, which contacts the rotatable teeth prior to contact of said rotatable teeth with said fixed linear teeth.