Glen - First, to clear up one thing. When I showed the two "Pyrex" jugs I wasn't suggesting that the second was innovative or some sort of big break-through. The method has been used before. I was simply giving it as an example of a very sensible way of getting rid of a two part mould and replacing it with a solid mould - desirable for all sorts of reasons.
Now back to your pictures. The lower ones show a two part press mould. It is a very good illustration of a press mould, showing the very strong hinge and locking knuckles which are essential. The jug handle, although being pressed in the way I showed, looks as though it is intended later to be bent down and attached at the bottom. I suspect there is a bit of artistic licence in the length of handle.
The upper pictures clearly show a blow mould as it is intended to be held shut by hand or by a simple latch with no real strength and, of course, the jug shown could not be pressed in the shape shown. I am, however, totally baffled by the jug handle which would be impossible to do in a blow mould. Are the two sets of pictures supposed to tell a story (bottom first) of some sort of press and blow process? If so they remind me of the sort of fanciful things which often appear in patent specifications although these are clearly not patent drawings.
I am about to go away for five or six days so any follow-up will not get a reply until then.
Adam D.
Topic: Prunts (Read 12990 times)
