Patent GB-190811245-A (GB)
Title: Improvements in and relating to Type Casting Apparatus.
Inventor: BHISEY SHANKER ABAJI
Filed: 1908-05-23
Granted: 1909-05-24
Abstract: 11,245. Bhisey, S. A. May 23. Type; type, setting.-Relates to machines for casting types or logotypes operating, to some extent, similarly to that described in Specification No. 21,971, A.D. 1904. The types may be conveyed to the magazines of a series of composing- machines. A plunger 4 in the container 1 for the molten metal is depressible by the action of a spring under the control of cams on a shaft 6 which serve also to raise the plunger. The tension of the spring is adjustable, and means is provided for preventing the descent of the plunger. The moulds are fed from a flat-ended spout 19 having a long slot or a number of holes, in which is a rotary cock 20, and are formed by the cavities between a series of plates 21, 22, Fig. 11, a single cover-plate 27 and a series of matrix blocks 32. The L-shaped plates 21, with their attached filling-plates 22 having one or more ribs 23, are placed side by side on a carriage support 24, so that the back of one mould block forms the side wall of the next mould. The plates 21 are secured to the support 24 by means of bevelled tail-pieces 25 and screws 31. Fig. 12 shows a modified mould block in which the plate 21 is made to accommodate a division wall 30 as well as an interchangeable filling-plate 22, the three members being fastened together by a screw, equal in length to the base of the plate 21. This screw and the base of the plate 21 form abutting surfaces for the next mould block. Holes 26 in the mould blocks, cover-plate, part 36, and support 24 provide for the circulation of cold water. The matrix blocks 32 may have matrices on two opposite faces or two or more matrices on each face. The matrix blocks commonly used in linotype machines may be employed. The mould or matrix blocks are interchangeable without disturbing the rest of the blocks. The metal passes from the spout 19 through a passage between members 35, 36, 37, the two first members being provided, if desired, with beaks extending into the mould cavities for the production of notches in the bases of the types, and the member 37 being capable of longitudinal movement against a spring by a camoperated hammer, and of a limited sideways movement independently of the mould carriage which supports it. The under surface of the bar 37 is formed with grooves. The mould carriage is movable as a whole away from the spout 19 after the cast by means of arms 45 connected with arms 48 operated by a cam 51, and rollers 81, 84 carried by the cover-plate 27 and moving along inclines 82, 85 raise the cover-plate and the matrix-block carrier 34 supported thereon, thereby lifting the types from the mould, the types being supported between the pins 28 and the matrix blocks. During this movement of the carriage, the bar 37 moves endways breaking off the piece of metal held thereunder, which is afterwards knocked down into a receptacle by a bar 88 depressed by the arms 93 of a lever 87 operated by a cam 92. The sideways movement of the bar 37 on the carriage may be dispensed with, the whole, or a part of the wall 35 in this case being pivoted to move out of the way of the falling break-piece. The removal of the break-piece from the notches in the types renders subsequent trimming unnecessary. Cams 57 operating arms 53 draw back the cover-plate 27 independently of the whole mould carriage, and a bevelled plate 58, being depressed by a camoperated lever 62, moves the matrix-block carrier 34 slightly away from the cover-plate and causes the types to drop into a tilting grooved block 94. The return movement of the cover-plate above the blocks 21 and of the mould carriage back to the spout 19 by a roller 74 and a cam 73, and the downward pressure of the cover-plate by means of screws 66, causes the various parts of the moulds to be firmly pressed together. The feet of the screws 66 are adjustable with relation to the coverplate by means of an arrangement of wedges ; and the screws automatically move downwardly by the pressure of the arms 70 against a bar 72. Loose links 71, or springs, &c cause the screws to rise when the mould carriage moves away from the spout 19. As the receiver 94 descends from beneath the cover-plate, it is tilted into the position shown in Fig. 10, and discharges the types into channels from .which rotary packer-wheels thrust them into receiving-trays. The sides of the trays may be numbered. When composing-machines are to be fed the types drop into grooved carriers 99 forming the links of a conveying-chain. Depression of a projection 111 enables the part 108 of a detent to pass into a magazine which is not full and thus release the type supported by the part 107 of the detent. According to the Provisional Specification, the detent may turn by the action of its own weight or of a spring, but is normally prevented by its engagement with a guide track. Fig. 10 shows two carriers 99 adapted for use with a casting-machine in which each matrix block 32 carries two matrices. The magazines of the composing-machines may be arranged with duplicate columns, types 'being released from the duplicate columns only when the main columns are empty. In this case, the main column of one machine may be in the same relative position as the duplicate column for the same letter in the next machine, so that each mould may supply the same average number of useful types. Two or more sets of moulds may be used to cast synchronously, i.e. one set may cast the common while another set casts the less common types.