Patent GB-719377-A (GB)
Title: Improvements in or relating to mould arrangements in typographical casting apparatusor machines
IPC: B41B7/04
Filed: 1950-08-02
Abstract: 719,377. Type-making machines. CLOWES & SONS, Ltd., W., and CRONCHER, H. G. July 24, 1951 [Aug. 2, 1950], No. 19325/50. Class 100 (3). Single-type composing and casting machines; moulds.-Relates to a mould arrangement in typographical composing or type-casting machines having two or more mould dimensioning blades arranged side by side and movable between lateral guides or blocks in relation to a cross block to form a mould cavity of the desired size between the ends of the blade or blades and the cross block, and a casting metal injection inlet situated at the end of the cavity opposite to the character moulding face or matrix. The blades and their lateral guides are relatively displaceable transversely with respect to the injection inlet so that the latter can be disposed at or near the mid-point of the variable dimension of the mould as determined by the positions of the blades in relation to the cross block. The invention is described as applied to a mould arrangement for use in a single type composing machine known under the Registered Trade Mark " Monotype ". On the usual base plate 8, Fig. 1, is mounted the transversely slidable intermediate plate 6 carrying the mould-blade side blocks 11, 12, a metal inlet 8a being provided, the axis X-X being the axis through the centre of the metal inlet and the matrix 1. A plurality of mouldblades such as 14, 15 are provided, separated by members 13. Each blade comprises a main lower portion 15b and an upper cut-off portion 15a. A blade of composite form may be provided, comprising two blades 19, 20, each having two portions. One or more blades may be withdrawn, either both portions or only the lower portions, to give the desired size of cavity, and the assembly is adjusted transversely to bring the centre of the cavity on to the X-X axis. A separating member may be provided overhanging the main portion of a blade, and various combinations of blades can be withdrawn and the alignment shifted to various axes corresponding to different size matrices for forming abnormal alignments of characters, for example where large initial characters are used, or " drop line " initials. Fig. 3 shows a complete mould arrangement having blades 50, 51, 52, 53 and separating member 54, the blades being in two portions such as 53a, 53b, Figs. 3 and 6, side blocks 11 12, the usual intermediate plate 6, cross block 43, cam-plate 10 and cam track 10a for ejecting the tang. Blade 53 is in operative position. The upper blade 53a is withdrawn by means of a lever 72 actuated by the usual selector levers 75, an end portion 74 actuating the blade. The blade 53a in withdrawing moves back the blade 53b. The lower blade is withdrawn by a lug 88 on a double-pronged member 71 actuated by the usual blade operating rod, and having an extension coacting with the usual mould blade equalizing gear. The blades are adjusted by a spring-urged screw 66. A bar 89 limits the movement of the blades, while two stop bars 90a separated by a gap on the X-X axis prevent withdrawal of blades not in operative position. One or more blades can be withdrawn, according to the position of the plate 6, which is moved laterally by a lever 23. In another form, the plate 6 is stationary and the blocks 11, 12 are moved as by a rack and pinion, the rack being coupled to the " Panel A " mechanism referred to below. A manual control mechanism is shown in Figs. 18 and 21. The lever 23 is actuated by a bar 23a having a handle 23b and a series of setting blocks corresponding in width to the blades, such as block 23-14 for a 14 point blade. By engaging a selected block with a locking tooth 113a, the plate 6 is brought to the desired position. Projections 23-ST on the blocks engage a lever 115 and set a pinion 118 and an eccentricallymounted matrix centring pin. 2, Figs. 1 and 30, so as to alter the axis of the matrix. A lever 116 is engaged by projections 23-MC on the blocks and controls various functions of the machine through connection 116b. The plate 6 is locked in selected position by wedges 30, 31 actuated by a knob 37e by means of a bar 32. Cooling liquid is supplied to the blade separating members, the side blocks 11, 12 and the cross block 43, as through pipe 56, Figs. 3 and 6. Three series of setting blocks may be provided, for different blade settings, as shown in Fig. 21, separate locking teeth 113a being provided. Thus, the upper series corresponds to the withdrawal of two blades together. For casting large initials, the lower series is used, comprising a block 23-24-S abutting an adjustable micrometer 23-G<SP>2</SP>-M. Various functions of the machine are controlled by a bar 158, Fig. 30, according to the size of type, and the bar 158 is actuated by lever 116 and connection 116b or by the " Panel A " mechanism described in Specification 719,371 through rod 170. The " Panel A " mechanism can also control the matrix alignment mechanism by a link pivoted at 115e, Fig. 18, to the pinion actuating mechanism, and the adjustment of blocks 11, 12 as referred to above. Referring to Figs. 30, 31, 33, bar 158 reciprocates a bar 161 and thereby through an over-centre spring mechanism a bar 161p, Fig. 33, guided in the pump housing, is displaced. When bar 116p moves upwardly, a cam faced head 161q strikes a pin on a control plate 203, which is then rotated by a spring 207 to cause a latch plate 203a to be disengaged from the pump cross head 206 to allow normal operation of the plunger. When bar 158 moves bar 116p downwards, latch plate 203a acts as a stop for the pump plunger to cause sharper action thereof as required for casting larger type bodies. Through rack 158a and pinion 157b, bar 158 regulates the heating of the melting pot. Through rack 158b and pinion 159b, bar 158 regulates the valve 159 in the water-cooling supply pipe for the mould. Through rack 158c, pinion 155b, and bevels 155g, 156b, bar 158 actuates the rheostat 156 for regulating the speed of the driving motor of the machine. Through rack 158c, pinion 155b, and bevels 155c, 155f, bar 158 controls the position of a snail cam 155 for controlling the extent of return motion of the type column pusher 152, Figs. 30 and 31, whose thrust is effected by a cam surface 160e on the galley cam table 160, which also lifts the rule 151 by means of a roller 160a, when the typeengaging hook 154 positions the line of type between the fixed type wall 150 and the adjustable wall 153 for displacement by the pusher 152, the last type cast being adjacent surface 150b. The movable wall part 153c is slidable in a 'tongue-and-groove arrangement and biased by a spring 153d towards the fixed wall 150, the channel surfaces 150c, 153j being almost in contact at initial setting. Spring ears 150a, 153f prevent the type falling into the type channel after being ejected from the type carrier by the pusher. Thus, at the end of a line of small type, the hook gathers the type before the pusher 152, which ejects it into the galley, while the position of bar 158 is altered. On the return of the pusher, a lug 152b thereon adjusts the wall 153e to provide a wider entrance for the type. After displacement by the pusher, a line of type is steadied by a flat spring 150s. To prevent undue cooling of the mould if casting is long interrupted, means is provided for interrupting the cooling water supply (or air supply, which can be used for cooling). Actuation of one of the compressed air pistons 215c, Fig. 34, raises a latch bar 215 and a bar 214 to close valves 210, 211. On withdrawal of the pump collar rod 216, latch 218 then prevents its return and thereby operation of the pump. On lowering of the piston, bar 215 is held up by a stop lug 219, until the latter is released by actuation of a rod 220. Specifications 719,372, 719,374 and 719,376, [Group XX], also are referred to.