Patent GB-190004944-A (GB)
Title: Improvements in Machines for the Manufacture of Narrow Neck Bottles.
Inventor: MACINTIRE JOHN JOSEPH
Filed: 1900-03-15
Granted: 1900-04-21
Abstract: 4944. MacIntire, J. J. March 15. Blowing and moulding bottles.-Relates to a machine for the manufacture of narrow-necked bottles, a pressed blank being first produced in a press mould and then blown in a blow mould. A central piliar 24 supports a collar 23 rotatable on ball bearings E and provided with four vertical base-plates 14 on which tables 13 are adapted to rotate. The tables 13 each carry a two-part press mould 5, hinged horizontally at H, and a twopart blow mould 4, hinged vertically at I. To the pins I are also pivoted the two-part neck-rings 8. At the left of Fig. 2 the press mould is shown closed and inverted at the "charge and press" position, the charge of glass being inserted at the upper or bottom end. Above the mould is a mould bottom 17 actuated by compressed air admitted to the cylinder 18, and beneath the mould is a plunger 1 surrounded in a spring-seated ring 2 and having spring-seated arms 3 for locking the sections of the press - mould together as the plunger rises. The table 26 carries several plungers 1, and is turned by a toothed ring 27 so as to bring a fresh plunger beneath the pressmould at every quarter revolution nf the collar 23. The plunger is lifted from the table by the pistonrod of a cylinder 35, which rises through openings in the table 26. When starting the machine, the treadle-lever 32 is depressed so as to actuate the rod 33 and lever 34 and raise the valve 30, which allows air to enter beneath the piston 25 so as to li't the mould bottom 17. A spring plate 43 retains the valve 30 in the raised position until it is tripped aside by the finger 31. As the pressmould is brought beneath the cyl nder 18 the plate 43 is tripped, the valve 30 descends under the pressure of the spring c, and the mould bottom 17 is forced into the mould. A bar 20 carried by the piston-rod 19 comes in contact at its lowest point with a stop 36 on the rod 22, and opens a spring- controlled valve h so as to admit air to the cylinder 35. At the same time a spring catch 41 engages with a recess e in the rod 21. During the upward movement of the plunger 1 the glass is compressed in the mould, and the mould bottom is finally caused to yield slightly under this pressure. The consequent rising of the bar 20 releases the valve rod 22, and also lifts the rod 21 so as to raise the valve 30. Both mould bottom and plunger are thus caused to return to the normal position, and they remain at rest until the plate 43 is again trinped by the next following finger 31. The collar 23 is turned through a quarter of a revolution to bring the moulds to the " reversing " point," where the neck of the bottle is brought uppermost and the blow mould is closed about it instead of the press mould. The next step is to bring the mould to the blowing position (the right-hand side in Fig. 2), where the blow-head t is allowed to descend on it and the bottle is blown. The blow-head is normally held up by the arm 20, the blowing operation taking place simultaneously with the moulding of another blank. The blown bottle is carried to the "discharging" position, where the moulds are inverted and the press mould closed in readiness for a fresh charge.