Lubricant spray device for glass moulds
AssigneeGraphoidal Developments Limited
InventorRoy Brown
Life of this patent
Estimating the term…
Abstract
Lubrication of the parison moulds of a hollow glassware moulding machine is carried out utilizing a spray device in which the discharge of pressurized air from a narrow opening is arranged to entrain surrounding atmospheric air. Liquid lubricant is discharged through a respective opening into this entrained air. Such spray devices have been found to be effective in spraying lubricant down into relatively deep moulds.
Claims17
In combination a hollow glassware moulding machine comprising blank moulds for forming glass parisons, one or more spray devices fitted to said machine, each spray device comprising an air inlet for pressurised air, means defining a discharge opening for said air, air passage means communicating said air inlet with said discharge opening, said air discharge opening being shaped and arranged such that discharging pressurised air creates a region of reduced pressure drawing in a greater volume of additional air from surrounding atmosphere and forms an air stream therefrom;
- a lubricant inlet for liquid lubricant, a discharge opening for said lubricant, lubricant passage means communicating said lubricant inlet with said lubricant discharge opening, said lubricant discharge opening being positioned to discharge said lubricant into said indrawn air;
- and means for periodically discharging lubricant simultaneously with air through said one or more devices onto said blank moulds of said machine.
In a method of moulding parisons for hollow glassware by forming molten glass into parisons in blank moulds of an automatic moulding machine, and periodically lubricating said blank moulds, the improvement comprising effecting said lubrication by means of a spray of lubricant in air through one or more spray devices, each such spray device comprising an air inlet for pressurised air, means defining a discharge opening for said air, air passage means communicating said air inlet with said discharge opening, said air discharge opening being shaped and arranged such that discharging pressurised air creates a region of reduced pressure drawing in a greater volume of additional air from surrounding atmosphere and forms an air stream therefrom;
- a lubricant inlet for liquid lubricant, a discharge opening for said lubricant, lubricant passage means communicating said lubricant inlet with said lubricant discharge opening, said lubricant discharge opening being positioned to discharge said lubricant into said indrawn air, the lubricating being effected by periodically discharging pressurized air from said air discharge opening and simultaneously discharging lubricant from said lubricant discharge opening into said indrawn air.
Dependencies are inferred from the claim text.