Patent GB-190826676-A (GB)
Title: Improvements in Typographical Composing and Casting Machines.
Inventor: LOCK WILLIAM HENRY
IPC: B41B11/84
Filed: 1908-12-09
Granted: 1909-12-09
Abstract: 26,676. Lock, W. H., Pearce, H., and Billington, J. E. Dec. 9. Type-bar making machines.-Relates to typographical composing and casting-machines and particularly to type-bar making machines of the kind described in Specification No. 12,911, A.D. 1907. The feed of the matrices from a number of superposed magazines, of which five, 1 ... 5, are shown in Fig. 1, is controlled by an equal number of fount-keys 6. Depression of a key 6 lifts a corresponding pivoted tumbler 10, which allows a cam-carriage 11 to drop, and 'the cam 12 thereof to contact with a rotating roller 13. A rod 32 having a forked engagement with the carriage 11 is thus lifted and tilts the arm 34 of a pivoted catch 35 against the action of a spring 37 ; the hooked catch releases a corresponding lever 38, the rocking movement of which, under the action of a spring 45, through a linkage 40, 41, 42, 43, tilts a bar 46 to open the mouth of one of the magazines. The bars 46, when closing the mouths of the magazines, relieve the escapement pawls of the weight of the matrices. The fount-keys are divided into groups according to the body dimensions of the various founts, and each group determines the selection of a mould of the proper size. In the form shown, there are six groups, controlling six moulds carried by a mould-wheel 18. Over all the cam-carriages 11 pertaining to a group, is a plate 16 which operates a linkage controlling the position of a wedge or cam 25, so as to unclutch a driven spur-wheel 28 and arrest it and the mould-wheel in the selected position. Keyed to the shaft 13 is a toothed clutch-sleeve 49, Fig. 2, movable by a bar 69, at each depression of a fount-key 6, into engagement with a weighted clutch-member 52 loose on the shaft. A spring plunger 54 normally engages a recess in the shaft and holds the clutch-members in the position shown in Fig. 2. A pivoted bar 63, extending over all the levers 38, is movable by a rod 61 and a cam-groove in the member 52, when this member is rotated at each key depression, to depress the lever 38 and close the mouth of the magazine which has previously been open; this lever 38 is then re-engaged by its catch 35. At the end of a revolution of the shaft 13, the action of cams 56, 57 unclutches the member 52. An arm 72 carried by the rod 61, when depressed, actuates a rod 75 so as to move a chisel-ended plunger 78 against the action of a spring 81 out of engagement with rack-teeth on the wedge 80 of a knife trimming-mechanism similar to that described in Specification No. 2138, A.D. 1898. The wedge faces bear at one side against screws 82 and at the other side against an adjustable knife 83, Fig. 7, which is pressed against the wedge by springs 84 and is resiliently held by means of springs 85 to the block 77. A rack 88 on the wedge gears with a wheel 89 on which is a pinion 91 meshing with a rack on a spring-pressed slide 93. The slide tends to hold the knife 83 away from the fixed knife 86. When the mould-wheel is moved up to the matrices for the casting operation, an adjustable screw 96 on the slide 93 passes into one of six holes in the wheel and is not affected thereby; when, however, the wheel, after making a partial rotation, moves up to the knives 83, 86, the screw 96 enters one of six holes 99 of varying depth, and the slide 93 is moved to operate the wedge 80 and set the knife 83 into a position corresponding with the size of the particular mould employed. Fig. 9 shows a modification in which a single adjustable mould is used instead of a number of moulds, the mould cap 102 being adjustable towards the mould body 101 by means of an arrangement of wedges 105, 106, against the action of springs 108. The wedge surfaces 106 are provided upon a sliding bar 107 pressed upwards by a spring 113 on a guide pin 112, and upon the face of the bar 107 is provided a series of steps 114, which correspond to the holes 99, previously described, and co-operate with the screw 96. A rack at the back of the bar 107 is disengaged by a detent when the rod 75, previously described, moves to release the wedge 80, after depression of a key 6. The bar 107 thus moves to its upper position. The depression of the key 6 also actuates the universal bar 69 and the linkage 70, 135, 131 to move a slide 130 over the end of the bar 107. Connected to the cam-carriages 11 are rods 121 adapted to act at varying distances from .its pivot 124 upon a lever 123 which is linked to a lever 126 supporting the slide 130. Thus, the actuation of a cam-carriage causes the bar 107 to be depressed to a particular extent to adjust the mould and position the trimming-knife. The keys 6 have operating-handles 137 instead of finger pads. The knife-adjusting mechanism may be employed in a machine provided with magazine selection apparatus independently of mould selecting or adjusting mechanism, in which case, for example, the wedge action of the bar 107, Fig. 9, upon the mould may be dispensed with, the knife-adjusting connexions with the bar remaining the same.