Patent GB-191019206-A (GB)
Title: Apparatus for Changing the Mould and Trimming-mechanism in Matrix-setting and Line-casting machines.
IPC: B41B11/84
Filed: 1910-08-16
Granted: 1911-08-10
Abstract: 19,206. Drewell, H., and Schnellsetzmaschinen Ges. Aug. 16. Moulds and driving-mechanism for type-bar making machines of the kind described in Specification 14,582/90. In mould-wheels provided with moulds of different width, the rotation of the mould-wheel to bring a particular mould into casting position is brought about automatically, after setting a hand-lever, between the ejection of one line and the casting of the next, by means of reversing-gear. In order that the change of mould may be correctly timed, it is made dependent upon the movement of the line-transfer carriage. In the machine shown, two diametrically opposed moulds are provided on the mould-wheel 1, Figs. 3 and 5; to change the mould, the mould-wheel must therefore be rotated backwards through onequarter of a revolution after the ejection of the previous line. The direction of rotation of the wheel must be again reversed after casting, so that the wheel may rotate through the usual three-quarters of a revolution in the usual direction to the ejecting position. The mould-wheel 1 is normally driven from the usual bevel-teeth 13, 14, Fig. 5, on the driving-wheel 15, through a bevel-wheel 12 and pinions 10, 9, 4. To enable the mould-wheel to be driven in the reverse direction, the pinion 9 is only clutched to its shaft 8 through a driving-pin 25 and slot 23, and a second pinion 19, similarly clutched to the shaft 8, is adapted to be operated through reversing-pinions 18, 20. To change the mould, a lever 73 is operated to lift a latch 62 and free an arm 54, which allows a link 50 to drop against a nozzle 60, Fig. 3, on the shaft 56 bearing the usual arm 76 to operate the linetransfer carriage 77. When the shaft 56 is operated as usual during line-transfer, the link 50 is tilted, which liberates an arm 41 previously held by an arm 43; this frees an arm 37 and allows a spring 31 on the shaft 8 to unclutch the pinion 9 and clutch the pinion 19. After the reverse rotation, a cam 75 on the main shaft 16 returns the arm 41 behind the arm 43, thus putting the normal drive into gear. Trimming type-bars.-The trimming-knives are automatically adjusted to the size of the mould in use by means of stops, which roughly adjust the knives, and which press a lever connected to the movable knife against an abutment face on the mould to bring about exact adjustment. Each mould 2, Fig. 9, is provided with a recess 96, the inner wall 98 of which is adapted to co-operate with an arm 114 to determine the exact position'of the movable trimming- knife 101. The knife 101 and arm 114 are both carried by a member 113 pivoted to a shaft 102. The member 113 is operated by a shoulder 131 on a member 115, also pivoted to the shaft 102 and provided with arms 117 which engage pins 119 adapted to co-operate with stops 133 on the mould. When the mould-wheel is approached to the trimming-mechanism as usual, the stops 133 cause a tilting of the member 115 and arm 114 until this abuts against the stop 98; further movement of the stops 133 compresses a spring 134 between the members 115 and 113, and securely holds the knife 101. A leaf spring 127 returns the member 115, and hence the member 113, to normal position. The shaft 102 is mounted in a holder 103, which can be adjusted in a body 106 carried on the vise frame 108, to ensure that the knife 101 is parallel to the fixed knife 100.