Patent GB-380743-A (GB)
Title: Improvements in and relating to moulding apparatus
IPC: B28B7/02
Filed: 1932-04-11
Abstract: 380,743. Moulds for building blocks, girders, &c. GRIESEL, H., 34, Hohenstaufenstrasse, Berlin. April 11, 1932, No. 10369. Convention date, April 28, 1931. [Class 87 (ii).] Comprises a mould which is variable in all its dimensions and configurations. A mould base of variable configuration and adjustable dimensions is erected on a portable base frame which carries a mould box also adjustable in its dimensions and having boundary surfaces variable in configuration and wholly or in part interchangeable. One construction of mould comprises a dismountable girder frame 1, Fig. 4, having inclined members 6, which form the base of the moulding space, and are connected to one another by a detachable hinge joint 18 which rests on the cross girder 5 and can be wedged to fix it rigidly when the members are in set position, by the pin 21 acting in conjunction with the stirrup 20. The inclination of the members 6 is varied by rotating the four screws 3 to raise or lower the ends remote from the hinge. The base of the measuring instrument shown in Fig. 4a is inserted into the slot 23 to enable the set angle to be determined accurately. The mould walls, comprising overlapping plates 26 which can be fixed by the wedge 27 after being adjusted to any desired width, are placed on the members 6 and set both horizontally and vertically by the instrument shown in Fig. 4b, the peg 305 on which is inserted into the slots 29. When set they are fixed by the rods 8 secured by wedges 30. Overlapping side plates 31 complete the closure at the ends of the walls. Various cores are introduced so as to produce the block shown in Fig. 1 for use in a roof and ceiling construction as shown in Fig. 3a. Figs. 13, 14 and 16 show a mould for making the ceiling slab or plate shown in Figs. 2 and 3a, together with the small beams attached thereto by wires in a single operation. A dismountable girder frame 101, 102 carries floor members 103 engaging slots in the members 101 and having flanges 108 forming lateral positioning members for longitudinal girders 104 which are fixed longitudinally by wedges 106 at each end in pairs of spaced vertical plates 105 to hold them in position to form the long sides of the mould. The short sides are formed by cross-bars 109 fixed by hooks 129 to the girders 104 and secured by wedges 132. The main core 128 which defines the upper surface of the moulded block and also carries the core members for forming reinforcing ribs on the upper surface, is secured to the girders 104 by hooks 139 and wedges 137. The rib-forming members are adjustable laterally by passing pins 141 through any one of a series of holes or indentations in the member 128. Another core member 114 is hooked at 115 to the cross-bar 109, while the remaining member 116 rests on the upper flange of the member 114 and is secured to the cross-bar 109 by a wedge 120. The space above the member 116 is used to mould the end beams shown in Fig. 2 connected by wires to the main beam, the wires being passed through holes 123 in the member 116 before moulding. The latter may be made in two separable portions to facilitate the insertion of the wires. The mould, illustrated in Figs. 17, 22, and 28, for making the cover-plate shown in Figs. 3 and 3a, comprises a girder frame 201, 202 of which the members 201 may be either straight or may be bowed and strengthened by tie rods 203 and struts 202<1>. Base members 205 fit into slots in the members 201 and carry girders 206 fixed to them by wedges 207 to form the long sides of the mould. The girders 206 are adapted for use with moulds having curved or flat bases, being made with one arched edge and one flat edge, either being used as the lower edge as required. The lateral members forming the short sides of the mould comprise bars 214, which are fixed adjustably to brackets 217 by the wedges 216, the brackets being fixed in turn to the members 206 by wedges 219. The bars 214 support the member 224 by means of hooks 223. The members 224 on the one hand supports the adjustable member 226 which is fixed by a wedge 228, and on the other hand supports the two-part member 249, 250 by means of the hook 243. The inclination of the member 249 is adjusted by the member 246 fixed by a wedge 247 and the two parts 249, 250 telescope in order to contact with the base of the mould in all positions. Provision is also made for the reception of cores in the mould space.