Patent GB-190721014-A (GB)
Title: Improvements in or relating to Type Casting and Composing Machines
Filed: 1907-09-21
Granted: 1908-09-17
Abstract: 21,014. Lanston Monotype Corporation, [Lanston Monotype Machine Co.]. Sept. 21 Monotype machines.-To enable a machine such as that described in Specification No. 8633, A.D. 1899, to be used for casting sorts, modifications are applied to (1) the die-case, (2) the mould-blade actuating-lever, (3) the type-carrier, (4) the line-channel, (5) the matrixcentring mechanism, and (6) the pump - plunger actuating- mechanism. A mould of large size is employed, and the normal wedge which controls the position of the mould-blade is disconnected from the jaws of the centring - mechanism and is provided with an extension to facilitate manual adjustment. (1) The matrix-blocks of the die-case are replaced by a block 10, Fig. 8, having a centring- cavity 19. Shoulders on the block engage two adjacent edges of a matrix-plate 12 which is held in position by angular clamping-blocks 15. (2) To enable the travel of the mouldblade to be increased, a lever 27, Fig. 19, is pivoted to the actuating-lever 26 and engages a rod 28 which is connected to the mould-blade. The lower end of the lever 27 is confined between a washer 30 on a stud 29 and the head of a screw 31. In order to reduce the travel of the mould-blade to the normal extent, the washer 30 is removed and inserted between the upper end of the lever 27 and a bearing 32 on the lever 26, in which position it is secured by the screw 31. (3) A type-carrier of larger capacity than usual is used, and its throw is varied by means of a stud 81, Fig. 21, secured to the actuating-lever 80 and having two apertures 82, 83, the one slightly above and to one side of the other. The connecting-rod 84 has two apertures 86, 87 and is connected to the lever by a pin which passes through either the apertures 83, 86 or the apertures 82, 87. (4) The blocks at the entrance of the line-channel are replaced by two blocks forming a curved channel of greater width and having spring retainers for preventing the return of the type. (5) To increase the pressure on the matrix, the usual spring 42, Fig. 8, of the centring-plunger 11 is reinforced by one or more springs 40 confined between plates 34, which are removably inserted between the actuating-head 37 and a collar 39 on the plunger. (6) The pumpplunger is, as heretofore, actuated by a lever 43. Fig. 2, pivoted to the plunger - rod 47 and connected by a link 45 to a lever 44 which is pivoted at one end to the pump frame 46. The other end of the lever 44 is pivoted to a head 48 on a vertically-moving rod 49. The head 50 on the actuating-rod 54 has an off-set sleeve 51, Fig. 3, which acts through a spring 52 to lift a rod 53 secured to the lever 43. An arm 55 on the rod 54 acts through a spring 56 on a collar on the rod 49. A stop 57 on the rod 49 arrests the movement of the head 48 and lever 44 by striking the frame, after which the further rise of the head 50 actuates the lever 43 and plunger-rod 47. The stroke of the plunger is varied by the insertion of a movable distance-piece 58 in the path of the stop 57. A rod 60 on the head 48 supports a sleeve 61, which is held down by a spring 63 and has an arm 62, Fig. 3, which rests between the sleeve 51 and the lever 43. The sleeve 61 is normally prevented from rising by a catch-lever 65 which is held by a spring in the path of a projection 61 on the sleeve. The rise of the head 50 therefore compresses the spring 52 without actuating the lever 43 until a projection 72 on the sleeve 51 trips the catch-lever 65 and and permits the sleeve 61 to rise. The energy of the compressed spring 52 is thus suddenly applied to the pump-plunger. The normal motion of the parts is obtained by.the removal of the distancepiece 58 and the withdrawal of the catch-lever 65 from the path of the sleeve 61. Specifications Nos. 8979, 8980, and 8981, A.D. 1901, No. 4259, A.D. 1902, and No. 27,480, A.D. 1903, are referred to.