Patent GB-190811581-A (GB)
Title: Improvements in the Production of Linotypes and Apparatus therefor.
Inventor: LOCK WILLIAM HENRY
Filed: 1908-05-28
Granted: 1909-05-27
Abstract: 11,581. Lock, W. H., Pearce, H., and Billington, J. E. May 28. Type-bar making machines.-In order to obtain basal alinement of characters of varying depth on a type-bar, the bottom and cap of the mould are both rendered adjustable. The means for adjusting the trimming - knives and the ejecting-mechanism are correspondingly modified. Mould-adjusting mechanism. The mould bottom 1, Fig. 5, is adjustable towards and from the centre of the mould wheel, and is guided by lugs 6 which slide on the mould body 2, which is fixed to the mould wheel. The lugs 6 terminate in inclines which are engaged by corresponding inclines on a cam-bar 10, which slides on the mould body 2 and is moved by a rack and a pinion 18 which is turned by means of a key. The mould bottom is held down by springs 13 on to the cam-bar 10, which is locked in adjusted position by an eccentric 21, which is turned by means of a key. Between the mould bottom 1 and the mould cap 24 are placed body liners 25 of usual form. The mould cap 24 is adjustably secured to the mould wheel by a screw passing through a slot 28 in the cap. Openings 29 in the cap receive liners of varying thickness, which enter recesses in the mould wheel and determine the distance of the cap from the centre of the wheel. The mould body is provided with the usual alining- ledges which engage the bottom lugs of the matrices, and the mould wheel which carries two moulds, has, as usual, four sockets 47, which receive pins on the vice frame to ensure registration of the mould with the matrices. In the case of a range of bodies varying in size from three to fourteen points, no variation in the amount of space allotted to the descenders of the letters is made for bodies varying from three to six, seven to ten, and eleven to fourteen points, one point being the difference between these consecutive groups so that only three adjustments of the mould cap are necessary. Trimming-mechanism. Both knives are adjustable to correspond with the adjustments of the mould, and one or both may be movable longitudinally to permit of the production of two-line letters. The left-hand knife 49, shown on the right in Fig. 9, is held to the vice frame 46 by two bolts 50 which pass through slots in the vice frame, against which the knife is pressed by springs surrounding the bolts. The knife is pressed by springs away from the right-hand knife 48 and against inclines on a cam-bar 59, which can be moved longitudinally in guides by means of a link 62 and a hand-lever 63. The knife 49 can thus be moved towards the knife 48, and is held in position by a spring-pressed detent engaging the cam-bar, the amount of movement being indicated by a pointer and scale. The knife 48 is similarly mounted on the knife-block 75, and is movable towards the koife 49 bv means of a similar cambar and hand lever. Two flapper-plates are provided and are pivoted on the vice frame and knife-block respectively. The means for moving the left-hand knife longitudinally is similar to that described in Specifications No. 12,213, A.D. 1897, and No. 18,962, A.D. 1907, and comprises two levers connected together which transmit motion from the operating-cam to the knife. The bowl which runs upon the cam is carried by a member which is pivoted upon one of the levers and can be withdrawn by means of a wire or the like when two-line letters are not required. Ejecting-mechanism. The outer side of the ejector-blade slides in contact with a fixed guide, and the inner side with a spring guide. All the blades used are of the same thickness at their rear ends, at which they are secured to the ejectorslide by spring tongues bearing pins which enter holes in the blade.