Patent GB-189905122-A (GB)
Title: Improvements in or relating to Machines for Moulding Articles from Molten Glass and similar Plastic Materials.
Inventor: BOULT ALFRED JULIUS
Filed: 1899-03-08
Granted: 1900-04-07
Abstract: 5122. Boult, A. J., [Fondu J. B.]. March 8. Moulding pottery.-Relates to machines for moulding articles from molten glass or from plastic material such as clay, faience ware, porcelain, &c. The moulds, cover, and plunger are provided with passages through which cold water may be circulated when moulding glass, or steam when moulding pottery. The machine is shown in plan in Fig. 1 and in side elevation in Fig. 3. The circular table 3 supports six moulds, which are brought in turn beneath the plunder. The intermittent rotation of the table is obtained by the co-operation of the plates 34, 35, of which the latter is provided with a driving-tooth 36 and is mounted on a vertical shaft 14<d>, on which is secured a worm-wheel 14<c> engaging with the worm 14<b> on the shaft 14. The shaft 14 is driven from the main shaft by bevel gearing, and a clutch 11 is mounted on the main shaft under control of a hand-lever. A worm 15<a> on the shaft 14 gives motion to a transverse shaft 15, Fig. 3, bearing cranks which actuate the mould plunger through the medium of connecting-rods 17 and a crosshead 18 guided on vertical rods 31. On the same shaft are carried cams which operate levers 22 linked to levers 23<b>, which are connected to rods 17<a>. The rods 17<a> are connected to a crosshead 24, carrying the mould cover, which descends before the plunger and presses firmly on the mould while the plunger is in action. The articles are discharged from the moulds by a cam-actuated rod 40 which rises at the required moment against the control of the spring 40<a>. Measured quantities of glass &c. are supplied to the moulds in the following manner :-A support 54, Fig. 2<a>, fixed to the machine frame carries a funnel 51 shown in section in Fig. 7. Levers 50, 52, pivoted upon one of the guiding- rods 31, carry respectively a distributer gauge 50<a> and a bottom plate 52<a>, both being provided with passages 59 for the circulation of water or steam. A cam-actuated rod 42, Figs. 1 and 2<a>, bears an arm 47 linked to the lever 50 and having its extremity engaging behind a spring bolt 57 on the lateral extension 52<b> of the lever 52. A quantity of molten glass &c. is supplied to the funnel 51 so as to fill the distributer gauge 50<a>. The levers 50, 52 then move together, so as to carry the gauge and bottom plate towards the mould 4. The end of the arm 47 ultimately passes the bolt 57, and the lever 50 moves onward alone, the measured quantity of glass &c. falling into the mould. An appliance of this type may be applied in machines operated by hand, in which case the cooling- passages may not be required. Water or steam for cooling or heating purposes is supplied to the machine through the tube 64, Fig. 3, which is provided with taps 65, 66. The mould cover and plunger are supplied through angle-tubes 67, flexible tubes 67<a> serving to discharge the water &c. to a reservoir 68. The moulds are supplied through a pipe 72 and radiating branch tubes 69, the discharge being effected through the tubes 76 and annular tube 78. Fig. 10 illustrates the method of moulding vessels of the form shown in Fig. 11, having water channels 96 to render them airtight, with the view of preserving the contents. The mould is in this case in the form of a split ring 87 contained within the block 89. Glass trays or baskets, cups, goblets, and dishes are mentioned as articles which may be produced by the machine.