Patent GB-297481-A (GB)
Title: Improvements in or relating to machines employed in the manufacture of hollow glassware such as bottles, jars and like containers
IPC: C03B9/22
Filed: 1927-04-21
Abstract: 297,481. Lax &. Shaw, Ltd., Shaw. J. F., and Branford, J. E. April 21, 1927. Blowing. - Relates to a bottlemaking machine of the Owens type and particularly to the means for operating the moulds and associated parts. The machine corpprises a frame 1, preferably mounted on wheels 3 so that it can be moved from one place to another, and a central vertical column 5 carrying ball bearings 16, 14 on which skeleton platforms 6, 7, respectively, rotate. Each platform comprises a number of arms radiating from a hub, and corresponding arms on each platform are joined to one another by pairs of upright plates 10. The structure thus formed is rotated about the column 5 by a motor 18 through gearing which engages a circular rack 11 secured to the lower platform 7. Each pair of plates 10 forms a frame or support for the moulds of a unit, and either plate can be removed to facilitate repairs or replacements. Between each pair of plates, a bent lever 29, 30 is pivoted on a shaft 28. A finishing mould 35 is mounted on the outer end of the lever while a counterweight 78 is secured to the inner end. A toothed segment 32 is secured to the hub of the lever and is engaged by a rack 65 formed on a rod 66 which slides through bearings 67 on the platform 7. A fixed cam ring 72 engages rollers 68, 69 on the lower end of the rack rod 66, so that the mould 35 is raised or lowered as the machine rotates. In its raised position, the mould is supported by a roll 53 which runs on a circular plate 58 carried by standards 59. The mould is closed. when it is raised, by a roll 55, carried by a slide 47, which engages the outer edge of cam plate 57 secured to the plate 58. The mould is opened, to discharge a finished bottle, by a fixed upright 208 having an inclined surface 207 which engages the roll 55 and thrusts it inwards. Each parison mould 106 is made in two halves carried by lever arms 108, and these arms are pivoted below a block 79 that slides vertically between the upright plates 10. The block 79, which has an extension 80 that forms a suction head, is connected by an adjustable link 84 with one end of a lever 90 pivoted to the upper platform 6. The other end of the lever 90 carries a weight 93 which counterbalances the weight of the mould 106 and its associated gear. A toothed segment 99, secured to the hub of the lever 90, is engaged by a rack 100 which is moved by a cam 105 fixed to the column 5, so that the rotation of the machine raises or lowers the parison mould. The inner ends of the parisonmould arms 108 are connected by links to a vertical loop-shaped member 120 which is engaged by a pin 122 on the end of a slide 125. A roll 129 on the slide engages a cam 131 fixed to the column 5, so that the mould is opened and closed by the rotation of the machine. The member 120 .allows vertical movement of the mould relative to the slide 125. A ring mould 135, in two parts, is pivoted on the underside of the extension 80 of the block 79. It is opened by cams 143, rotated by a rod 144, and is closed by a spring. The extension 80 is formed with an aperture to allow the passage of a rod 155 which carries the neck-ring plunger, and is fitted on its upper side with a cover or cap 157 which is connected by pipes 196, 194 to a distributor valve 187. The valve controls the application of suction and compressed air. A blade 182 carried by a rotary shait 179 is provided to cut off excess glass as the mould 106 is lifted after making a gather.