Patent GB-190327476-A (GB)
Title: Improvements in or relating to Die or Matrix Centering Mechanism for Monotype and like Machines.
Inventor: BOULT ALFRED JULIUS
Filed: 1903-12-15
Granted: 1904-04-28
Abstract: 27,476. Boult, A. J., [Langston Monotype Machine Co.]. Dec. 15. Monotype and like machines.-Relates to matrixcentering mechanism of the kind described in Specifications No. 8633, A.D. 1899, and No. 8979, A.D. 1901. Fig. 1 shows a plan, in which 1, 2 denote the levers of the two primary positioning- mechanisms, and 3, 4 the levers of the two secondary positioning-mechanisms, and 5 the stops of the secondary controller. The levers 1, 2, 3, 4 of the two mechanisms are actuated by independent devices operated by a prime mover or lever. One set of levers is actuated by connections with a pin 20 on a lever 11, Fig. 4, and the other set by connections with a pin 23 on a lever 12. The levers 11, 12 are on the same pivot 16, Fig. 1, but are independently movable thereon. The arm 25 of the lever 12 is formed with a segmental rib engaging a corresponding groove in the head of the lever 11, while a segmental rib on the end of the other arm of the lever 11 engages a groove 24 in the arm 21 of the lever 12. On the levers 11, 12 are pins 19, 22 engaged respectively by the rods 13, 26, Fig. 7, of the operating-device. The rods 13, 26 pass through independent spring boxes 33 on a head 31 having a socket 34 engaging the end of the main operating-lever or prime mover. The boxes 33 each contain one or more helical springs 41, bearing at one end against collars 43 engaging shoulders 35 on the rods 13, 26. At the other end, the springs bear against loose collars 42 in contact with wedges 40 engaging cones 36 held on the rods by nuts 37. Extensions 38 of the cones pass through holes in the closing head 30 of the boxes 33. In the forward movement, the rods 13, 26 are operated through the pressure of the springs 41, while in the return movement they are operated through the pressure of the springs 41 and also the frictional grip of the wedges 40 on the boxes 33. The bars 50, Fig. 2, carrying the stops 5 are constructed to prevent breakage at the juncture of the stop 5 with the bar. The bar is reduced in thickness on each side of the stop 5, as at 56, and may also be slotted, as at 50<a>, so that these parts may bend or vibrate when the stop is struck by the positioning-jaws. To render the spring action more effective, the ends of the bar 50 are reduced, so that the supporting-bearings are located intermediate of the ends of the bars, and the ends are free to vibrate. The bars 50 are finally positioned and held by the bolts engaging the teeth 51 formed in the bars, and a locking- device is provided for holding the bolts when in engagement. The teeth 51 are made short to prevent breakage. The locking-bolts 7 are moved by levers 52 pulled by springs 53 in the direction to engage the bolts with the teeth 51, and moved in the other direction by a reciprocated rod 8. On the levers 52 are pivoted locking-levers 62 which engage a fixed abutment 63 when the bolts are engaged, and hold the levers and bolts in position. As the end of the rod 8 approaches the levers 52, it first comes into contact with arms 61 of the locking-levers 62 and disengages the latter, the levers 52 being then moved to withdraw the bolts.