Patent GB-190502949-A (GB)
Title: Improvements in or relating to Die-case Transposing Mechanism for Type Machines.
Inventor: DOVE JOHN MAURY
Filed: 1905-02-13
Granted: 1906-01-11
Abstract: 2949. Dove, J. M., Bancroft, J. S., and Indahl, M. C. May 28, 1904, [date applied for under Patents Act, 1901]. Monotype and like machines.- A monotype or like machine is provided with interchangeable die cases and with automatic means, controlled by the perforated strip, for changing the die cases. The attachment is shown as applied to the machine described in Specification No. 8633, A.D. 1899. A magazine die-case holder 17, Figs. 2 and 8, in the form of a turret or head provided with die-case guides 18 and, preferably, polygonal in cross-section, is attached to a shaft 20 mounted on a frame 19, which is pivoted on a shaft 22 in line with, or constituting a prolongation of, the axis of the centring-pin lever 9. The die cases 13 are notched for locking by means of a gated flange 28, which is deflected in the parts adjacent to the gates 29, so that there is a slight shifting of the die cases during rotation of the magazine. The selective mechanism controlling the magazine comprises a series of gauge or stop pins governed by the record-strip, oppositelymovable jaws 34, 35 adapted to close upon the projected stoppin, and a rack-bar 45 engaging with a pinion 21 on the shaft 20 and furnished with a head 46 between and in the path of the jaws 34, 35. The jaws 34, 35 are actuated by means of integral rack-bars 36, 37, a rackbar 38 guided on the frame 19, a pinion 40 mounted on the frame 19, and a pinion 39 carried by a link 41 provided with a spring coupling 41<x> and actuated from a cam 43. The magazine is raised and lowered by means of a link 23 connected to the frame 19 and to a lever 24 actuated by a cam 25. The die case is detachably connected to its section of the centring-mechanism in such a way that it is uncoupled by raising the supporting-frame 5. The frame 5 is raised and lowered by means of an extensible connexion intermediate of the actuating- lever 8 and the lever 9. The lever 9 is made in two parts, a driving-section 47 attached to the dependent member 48, Fig. 4, upon which the actuating-cam operates, and a loosely pivoted section 49 extending through a slotted bearing 50 on the section 47 and engaging the centring-pin 7. When the machine is in operative condition, the sections 47, 49 are locked together by a block 51, which is guided upon the section 49 and controlled from a cam 52. A three-armed lever 55 is pivoted on the section 49. One arm 56 extends through the bearing 50 and is connected to a link 57 on the lever 8, another arm 58 projects upwards behind the block 51, and the third arm projects downwards in the plane of a supporting-surface 59 on the bridge 4. The locking-lever 63, Fig. 2, of the paper-feed mechanism is connected by a link 62 to an arm 61 of a rock-shaft 60, another arm 64 of which has adjustable connexion with a link 54 forming part of the connexion of the block 51 with its cam 52. The link 62 serves also to hold down the air-bar and admit pressure to the exposed ports while the paper feed is locked out, for which purpose it is bevelled to ride over a lifting-pin on the air-bar lever. The means for transferring the die case from and to the magazine and the carrier 6 comprises rack teeth along one edge of the die case, and co-operative wheels 74 on shafts 73. supported by a frame 72, which is pivoted to a shaft 75 mounted on the frame 19, and is oscillated from a cam 70. The shaft 75 is geared to the shafts 73, and is itself operated by means of a pinion 80 and a rack-bar 81 actuated from a cam 84, The manual pump-disengaging rod 100 is engaged by a bell-crank lever 101 attached to a rod 102 actuated from a cam 103. The several cams are united and form a cam-cylinder loose upon a shaft 26 geared to the main shaft. A spring- pawl clutch member 87, Fig. 13, on the camcylinder, is normally held out of engagement with a ratchet-wheel clutch member 86 on the shaft 26, by means of a shoulder 89 on a spring-retained lever 90 controlled by the record-strip. A second shoulder 91 on the lever 90 engages behind a pin 92 on the cam-cylinder.