Patent GB-190800085-A (GB)
Title: Improvements in Typecasting Machines.
Inventor: SIGURDSSON ODDUR VIGFUS
Filed: 1908-01-01
Granted: 1908-08-20
Abstract: 85. Sigurdsson, O. V. Jan. 1. Monotype and like machines.-In a key - operated type - casting machine, the matrices are divided among a number of bars or carriers mounted upon a rotary support. Various founts may be provided, each comprising a number of matrix carriers. The carriers may co - operate with a single mould, which is adjustable for different widths and heights of type. In the machine described, there are three founts each consisting of two matrix bars, which are marked respectively 2, 3 ; 4, 5 ; and 6, 7. The bar 2 is normally at the lowest point of the supporting- drum 1, and is in position to be drawn out so as to present the selected matrix to the mould 8. The drum 1 is rotatable upon the cylindrical portion 10 of a bar 9, which may rock slightly about its pivot 12. Slidable upon the bar 9 is a rack member 14, grooves 15 in which engage projections on the matrix bars, so that when the member is drawn out by the pinion 16, the particular matrix bar in engagement therewith is also drawn out. The pinion 16 is rotated by the movements of a rack-bar 23, which is pulled to the right by a spring-operated band 24, and is provided with two stops 35, 36 at the front and rear edges thereof respectively. The stops cooperate respectively with the left and right halves of a series of slides 34 movable vertically by depression of the keys 32. The keyboard is divided as shown by the dotted line in Fig. 2, and means is therefore provided for preventing the last few keys in the left half from coacting with the stop 36. The extent of movement of the bar 23 determines the matrix to be presented. Depression of any key in the left half of the keyboard actuates a link 45 to release a pawl 46 so as to allow the member 14 to move out. Depression of a key in the right half actuates a link 48 to release a pawl 49 and allow the drum 1, under the action of a spring 52, to move the bar 2 out of, and the bar 3 into engagement with the member 14. The movement of a cam-disk 57 on the drum simultaneously rocks a lever 58, Fig. 3, and releases the pawl 46. The spring 52 operates a rod 53, which, when the bars 2, 3 are being cast from, is attached to a lug 64 on the drum. When it is desired to change the fount, the rod 53 is attached to either of two similar additional lugs. An arm 54, to which the rod 53 is linked, is loose on a continuously revolving shaft 63, and is secured to a notched disk 65. Loose upon the shaft is an arm 67 carrying a pawl 68 and having a projection 71 engaged by a latch 70. When this latch is withdrawn, the arm 67 is locked to the shaft by any suitable device, such as an ordinary roller clutch, and the consequent movement of the disk 65 by the pawl 68 rotates the drum back to its normal position, in which it is held by the pawl 49. The pawl 68 has a lateral projection, which engages a stationary cam 69 and trips the pawl after the arm 54 has rocked sufficiently. The return movement of the member 14 into the drum operates a rod extending through the part 10 so as to rock a bell-crank lever, one arm 74, Fig. 4, of which engages a shoulder on the link 75. The latch 70 thus releases the arm 67. The link 75 is disengaged from the arm 74 to allow return of the latch 70 by the engagement of its camsurface 77 with a post 78. The rack 23 and keys are returned to their normal positions after the casting operation, by means of a slide 28, a pin thereon engaging a stop 26 on the rack. The slide is linked to an arm 30, loose on a continuously rotating shaft 31 and secured to a notched disk 83. The disk 83 is rotatable by a pawl on an arm 84, which is clutched to the shaft in a manner similar to that previously described, when a latch 87 is swung aside by a rod 81. The pawl 81, in moving lengthways, releases the latch owing to the action of the cams 90, 91. On one side of each matrix bar are projections which control the mould as described in Specification No. 10,740, A.D. 1907, and serve to hold the bars in their guideways in the upper part of the drum, Fig. 4.