Patent GB-190116652-A (GB)
Title: Improvements in Machines for Making Glass Bottles.
Inventor: LEISTNER CARL
Filed: 1901-08-19
Granted: 1902-08-07
Abstract: 16,652. Leistner, C. Aug. 19. Blowing and moulding bottles.-The invention relates to improvements in bottle-making machines, and consists of means for shaping the bottle lip and mouth, for rotating the parison in its mould, for swinging the parison in the air, for turning the bottle in the finishing-mould, and for preventing excessive air pressure. The machine is arranged so that a single handle performs several functions. Fig. 1 shows a side elevation of the machine with the moulds closed, and Fig. 3 a front elevation with the moulds open. The parison mould v and the finishing-mould f are made in halves, which are adjustably mounted on arms 6, 7 pivoted in brackets 4 connected to the standard 2 by bolts and a slotted plate 3, so as to be vertically adjustable. The arms carry bevel segments 8, 9 gearing with bevel pinions 10, the axes of which are fitted with sprocket-wheels 11. These sprocket-wheels are connected by an endless chain 12 carrying rods 13, 14, the latter connected to a spring 17, and the former to a treadle 15. The spring normally holds the moulds open, but pressure on the treadle simultaneously closes them. A bracket 20, mounted between the brackets 4, carries bearings 21 for a tubular hub 22, on the end of which are mounted at right-angles to its axis the neck moulds k, k<1>. These moulds are made in halves, which are pivoted on pins 71 carried by sleeves which are connected to the hub 22, so as to be free to rotate, and carry friction-wheels 23. A friction-wheel 25 is carried by a tubular axis passing through the hub 22, and turning in a socket which can be tilted so as to bring the wheel 25 in contact with either of the wheels 23. The axis is driven through a chain-wheel 26 by a motor. The tilting movement is effected by moving a handle 32 backwards and forwards, this handle being connected by links, collars, &c. to arms with inclined slots, which act on pins carried by a collar mounted on the tilting socket. An air tube passes axially through the tubular axis, and can be put in communication with either of the neck moulds by means of a cock operated by turning the handle 32. The neck moulds are fitted with pistons carrying plungers, which serve to open and close the air outlets. The end of the hub 22 is fitted with a safety-valve to prevent excessive pressure. A mould bottom b is mounted on a plate 76 hinged to a disc 75 carried by a rod sliding in the end of an arm 41, and capable of being raised and lowered by a handle 42 operating a rack and pinion 44, 43. The operation of the machine is as follows :-The parts being in the position shown in Fig. 1, molten metal is placed in the parison mould v, and enters the neck mould so as to form the neck. The handle 32 is pulled outwards, putting the wheel 25 in gear with the upper wheel 23, and thus rotating the parison. At this stage, if desired, air may be admitted to the upper neck mould, so as partly to blow the parison. The treadle 15 is released, allowing the spring 17 to open the moulds, and the hub &c. is turned by means of the handle 32 acting through a pawl &c., so as to swing the parison f and elongate it. A further movement brings the parison above the mould bottom b, which is raised so that the parison can be worked thereon. The moulds are then closed by depressing the treadle, and air is admitted to the neck mould. The pressure of the air first depresses the piston carrying the plunger, so as to open the orifice of the blow tube, and the issuing air then blows the bottle in the finishing- mould. At the same time, the handle 32 can be pushed inwards, so as to put the wheel 25 in gear with the wheel 23, and thus rotate the bottle in the mould. At this stage, the now closed parison mould is again filled, 'so that a second parison is being formed while the blowing operation is taking place. The moulds are again opened, and the bottom b drops or is lowered so that the formed bottle can be removed. In the preferred arrangement, when the bottle is finished, the arm 41 is swung sideways, as shown in Fig. 3, by the action of a bell-crank lever 77 connected to the rod 13, and a tappet 103 coming against a stop tilts the bottom of the mould. A further rotation of the hub &c. admits air below the piston of the rising neck mould, and forces it outwards, so as to cause the plunger to close the orifice of the blow tube. The parison mould is shaped at v<1> to grip a flange on the neck mould. The finishing - mould is formed with a similar flange f<1>, and has a groove at its lower part to hold the bottom b in position. The neck moulds are normally held closed by springs 72, but the parts are turned on the pivots 71 so as to free the bottle neck as the finishing-mould opens by projections thereon engaging recesses in the half-neck moulds.