Temperature control for the forming units of a machine of the press and blow type

DETAILED DESCRIPTION According to this invention, there is provided an automatic temperature control system which is applied, for example, to a glass forming machine of the press and blow type which automatically senses the heat transfer condition of the parison-forming or blank-forming units thereof and automatically controls the supply of cooling fluid, specifically air, thereto to maintain properly controlled temperatures in the various units so that the final formed ware will be of uniform quality.
More specifically, means is provided for supplying cooling air to the blank mold and plunger of each forming unit and this supply of air is automatically controlled in accordance with heat transfer from these members.
This control is accomplished automatically by temperature-sensing instruments located at precisely selected positions along the paths of movement on the machine of the blank mold and plunger of each forming unit, which produce a signal from each member that operates a controller which, in turn, operates a loading regulator in the cooling air supplyline for that particular member.
Thus, it will not be necessary to rely on the judgement of a machine operator to produce symetrically balanced temperature conditions but properly controlled temperature conditions can be automatically maintained during operation of the machine in order to produce uniform ware.