Patent GB-257637-A (GB)
Title: Improvements in or relating to machinery for manufacturing glass-ware
IPC: C03B9/16
Filed: 1925-03-07
Abstract: 257,637. Rushen, P. C., (Hartford-Empire Co.). March 7, 1925. Blowing; delivering molten metal.-Apparatus for making bottles or similar glassware comprises a number of independent forming machines A, Figs. 1 and 2, a delivery mechanism B for conveying charges of glass from a feeder to each of the machines, and a timing-device C for controlling the operations of each machine in proper timed relation to one another and to the feeding- device. Forming machines.-The machines A are preferably arranged side by side and each comprises an inverted parison mould 1, Figs. 4 and 13, a finishing mould 2, and a ring mould 3 which is adapted to swing about a horizontal axle 97 to transfer a parison from the parison mould to the finishing mould 2. The operation is so arranged that a parison is formed in the parison mould at the same time that the previously formed parison is being blown to its final form in the finishing mould. The parison mould sections are hinged on a pin 11, Fig. 4, and are opened and closed by an air cylinder 14. The open end of the mould is closed by a cover or baffle plate. 32 carried by an arm 35 adjustably secured to the piston rod 41 of an air cylinder 42. The other end of the rod has a pin which engages in a cam slot 52 formed in a tubular extension 51 of the cylinder 42. Thus, as the cover is lifted from the mould, it is swung to one side out of the path of the ring mould 3. During the parison-forming operation, the ring mould 3 is positioned below the parison mould 1, and a mouth-forming plunger 71, Fig. 13, is projected into the ring mould by an air cylinder 57. This cylinder is provided with two pistons one of which, 60, has a tubular piston-rod 61 carrying a head 63 that seats against the underside of the ring mould. The other piston, 67, has a piston rod 70 which slides through rod 61 and' carries the mouth-forming plunger 71. Suction is applied to the ring mould, to settle the charge of glass, through a pipe 80 which communicates with the space between the two pistons and thence through passages with the interior of the ring mould. Pressure is then applied through the pipe 80, and this forces the piston 67 downwards and withdraws the plunger 71 from the ring mould. At the same time, the pressure is transmitted to the ring mould and counterblows the charge to form a parison. When the parison is formed, the mould 1 is opened and the axle 97, Fig. 4, is rocked by a cylinder 111 in order to turn over the arms 94 on which the ring mould is mounted and thus to transfer the parison to the finishing mould 2. The arms 94 each carry a section of the ring mould and each is carried by opposed cylinders 96 slidably mounted on the axle 97 and pressed towards one another along a common piston 101 by springs. When air is admitted to the cylinders, they are forced apart and open the ring mould. The finishing mould halves are opened and closed by a cylinder 154, and the bottom plate 174 is carried by a holder adjustably mounted on the base plate of the machine. A blowhead 181 is raised or lowered by the piston of an air cylinder 190 which is provided with an extension 200 having a slot 201 to swing the blowhead to one side as with the baffle plate 32. Deliverying molten metal.-The means for delivering the mould charges to the different forming machines comprises a funnel 204, Figs. 1 and 2, which receives the charges from a feeder 207, and a number of guideways 205 which extend from the funnel to the machines. The funnel has its inner surface lubricated by air or steam projected from an annular chamber 211 mounted over its upper edge. Each guideway comprises a trough section 215, a deflector 216, and a reciprocating distributor 214 which is carried by the piston rod of a cylinder 221. The cylinders are operated in succession, so that the distributors 214 are brought in turn beneath the funnel and deflect the charges in succession to the troughs 215. Timing the operations.-The pressure-controlling mechanism, for timing the operations of the different parts of the machines and of the delivery mechanism, comprises a valve chest 250 which is connected to the various cylinders by air pipes. Air is admitted to the pipes by valves actuated by levers 272, Fig. 1, which are operated by studs 270 adjustably secured to a constantly rotating drum 271. The valves are held open by latches 273 until they are tripped by studs 274 on the drum. A number of drums are mounted on a shaft 275 which is driven in timed relation with the feeder, and each drum may be disconnected from the shaft by a clutch 277.