Patent GB-184983-A (GB)
Title: Improvements in or relating to typographic moulds
IPC: B41B7/04
Filed: 1921-07-27
Abstract: 184,983. Lanston Monotype Corporation, Ltd., Pierpont, F. H., and Tipton, J. E. July 27, 1921. Moulds for single-type composing and casting machines. Relates to type moulds of the kind having a distance-piece for the side-blocks located in an opening in the mould-dimensioning blade as described in Specifications 22063/03 and 27480/03, and having a divided mould blade as described in Specifications 18848/02 and 22303/13 to provide for casting low quads and spaces. (1) The mould blades E, E<1>, Figs 2 and 3, are divided horizontally and are of uniform thickness throughout one sliding upon the other without any overlap. A spring clamping-plate H bears upon the upper blades E<1> to apply spring pressure to both blades. The plate H also bears upon a shoulder on the side block D'. Another spring clamping-plate J bears by means of a rib j upon the other side-block D. (2) To prevent tilting of the blades between the side blocks, multiple distance-pieces E<2>, E<3>, Fig. 2, are provided to give a wider bearing-surface against the side blocks. Preferably three distance-pieces are provided, spaced apart in triangular arrangement in separate elongated openings e<2>, e<3> in the blades and retained therein by spring wires e<4>. (3) The side blocks D, D<1>, Fig. 3, and intervening blades E, E<1> are clamped between the ends of two adjusting-screws M in one end-block F, and a block N is situated in an opening in the other end block F<1> and pressed against the side block D<1> by a spring N<1> adjustable by means of a screw cap N<3>, the part M, N providing a three-point suspension for the side blocks. Adjustment of the side blocks relatively to the cross-block is effected by centring-pins having eccentric portions projecting into grooves in the under faces of the side blocks, these grooves extending transversely to allow movement of the side blocks parallel with the cross-block under expansion by heat. (4) The intermediate plate K, Fig. 2, is formed with an extension K<1> to provide a long bearing for the blades E, E<1>. A separate stop L, L<1> is provided for each blade on a bracked attached to the rear side of the mould, and these stops project into openings e, e<1> in the corresponding blades. The blade E' may be operated as described in Specification 181,089, or otherwise. (5) Lubricant supplied through a passage P, Fig. 3, in the screw cap N' into the chamber containing the spring N' is distributed thence through a duct n in the block N and a duct D<2> in the side-block D<1> to the mould blades E, E', and through a lateral duct in the end block F<1> to the adjacent face of the cross-block. Distributing-channels d<2>, Fig. 2, are cut either in the sides of the blocks D, D<1> or in the sides of the blades E, E', and one or more small passages may be cut in the upper edge of the blade E'. Lubricant is supplied to a. passage through the end piece A<3> and the gib G to the adjacent face of the backplate b, Figs. 2 and 6, of the cross-block B, and thence distributed by ducts b<2>- - b<7> to the faces of the cross-block and to the jet pusber B<6>. A groove b<8> is cut along the back-plate. at its upper edge to prevent the lubricant from spreading over the top of the cross block.