Patent GB-189908633-A (GB)
Title: Improvements in Machines for Casting and Setting Type.
Inventor: BOULT ALFRED JULIUS
Filed: 1899-04-25
Granted: 1900-03-31
Abstract: 8633. Boult, A. J., [Lanston Monotype Machine Co.]. April 25. Monotype machines.-Relates to the Lanston monotype machine by which justified lines of separate types and spaces are cast and collected in a gallay, a previously-prepared perforated strip being used for controlling the operations of the machine. Fig. 1 shows a perspective view of the machine, and Fig. 7 a sectional elevation. The mould consists of parts or sections mounted in a frame which may be removably mounted in the machine. The mould cavity is formed between two side blocks 1, 2, between which slides the blade or plunger by which the size of the mould is regulated as required for the different types and sizes of spaces &c. The fourth side of the mould is formed by a block sliding across the faces of the blocks 1, 2. This block uncovers the mould so that the type may be ejected by the mould slide, and is provided with means for removing the sprue. The mould blocks 1, 2 and blade &c. are so mounted as to permit of expansion due to variation of temperature, and passages for circulation of cooling-liquid near the mould cavity are provided. The matrix case 20 is movable in two directions at right-angles, to bring any matrix block 22 into position over the mould for casting a type from it. The case 20 slides in a carrier 29 sliding at right-angles to the case 20 upon a holder 32 so mounted upon the part A of the frame that it and the matrix case may be depressed to bring the positioned matrix down on to the mould. The holder 32 is carried by two vertical rods 37 sliding in sleeves in the frame A and connected at their upper ends by a piece 38. The matrix blocks are mounted so as to have a slight independent movement in the case 20, and are finally centered to the mould cavity by a conical-nosed pin 47 which enters vertical holes in the matrix blocks. The centering-pin 47 slides vertically in an adjustable sleeve 48, and is depressed to centre the matrix by a lever 58. The matrix case is depressed by a lever 43 connected by a rod 59 to the lever 58, the arrangement being such that the pin 47 moves down more rapidly than the matrices, overtaking and centering them when they reach the mould. A means is provided for putting a brake or friction upon the sliding movements of the matrix case 20 and carrier 29 while they are being preliminarily set, and for removing such brake when the case is moved down and the matrix is being centered over the mould by the pin 47. Matrix-centering mechanism. Any matrix may be brought to position by the movement of the case 20 in one direction, and the movement of the carrier 29 in a direction at right-angles. The case 20 and carrier 29 are moved by similar sets of mechanism. Each of these sets of mechanism comprises a set of stop pins, one of which is projected at each operation of the machine by pneumatic means controlled by the perforated strip. This pin sets a pair of sliding jaws which are moved away from and towards each other at each revolution of the driving-shaft. These jaws are moved by a pair of levers operated by a bell-crank lever and so arranged that one jaw first moves up to the stop pin and the second jaw then moves up to the first jaw. These jaws engage between them a setting-stop which sets a second pair of similarly-operated jaws. This second pair of jaws moves and sets a head or projection on a rod connected with and moving the die case 20 or carrier 29 as the case may be. The matrix case &c. is thus positively moved from one casting position to another, without being returned after each cast to a normal or zero position. The first pair of setting-jaws is also moved back for re-setting while the second pair is positioning the matrix case &c. After the matrix is thus positioned, the die case &c. is depressed and the matrix finally and accurately centered over the mould by the pin 37. Mould adjusting and justifying mechanisms. The sliding mould blade is connected to a rod operated by a lever through intervening springs so that the mould blade may be stopped in the desired position. It is stopped in the forward or type-ejecting movement by an adjustable wedge on the mould frame. In its rearward movement it is stopped in the required position to cast a type body of the proper size, by the operation of a normal mould-blade setting-wedge moved by the mechanism which moves and sets the matrix case in one of its movements by which the different rows of matrices are brought over the mould, each of such rows casting types of the same body size and the rows being arranged in order of the sizes of type. The setting-wedge is moved in either direction as required, without being returned to a zero position between each operation, and, to permit of its free movement in either direction, the part against which it rests or slides is in the form of a wedge and is moved to its outer or inactive position while the wedge is being set and to its inner or operative position when the wedge is set. A stepped form of setting-wedge is described for fonts of type which require two or more rows of matrices for some sizes of type body. The justification is effected by a pair of sliding wedges set for each line by the justifying perforations in the strip. Either or both of these justifying-wedges are set by the same means as the normal setting-wedge, but during a revolution or revolutions of the machine before the casting of the line commences, and they are thrown into operation at the casting of each space by a sliding wedge located between the justifying and normal setting wedge, so that the required additional space is added to the normal. When this intermediate wedge is moved into its operative position, for the casting of a space, the movable wedge against which the normal setting-wedge acts for casting the types is held in its outer or inactive position, and vice versÔ. The various wedges are provided with toothed ports, which are engaged by plungers to set and hold the wedges in accurate position. Metal-injecting mechanism. The melting-pot and its connections are all mounted upon a separate frame 180 pivoted upon a threaded vertical shaft, so that the frame 180 and melting-pot &c. may be lowered and then swung out horizontally for inspection of the parts. The melting-pot is pivoted on a series of arms 185 secured to parallel shafts 186 journalled in the frame 180 and connected by a link 187. The melting-pot may thus be swung up, while maintaining its horizontal position, to bring the nozzle 189 into engagement with the socket on the lower part of the mould. The socket is bell-shaped, and is formed on a plate 16 of thin material, attached to the lower part of the mould frame. The melting-pot is moved up by an arm 201, operated by a spring when permitted by the operating-cam. The melting-pot is formed with a conduit leading to the nozzle 189, the whole being enclosed within a casing 190, which may be packed with asbestos &c. Under the metal chamber is a combustion chamber, under which the burner is placed, the products of combustion passing under and over the supply conduit of the nozzle into the escape pipe The cover of the metal pot is in sections, and the space above the pot communicates with a pipe surrounding the escape pipe through which fumes may escape. The pump piston is actuated by lever &c. mechanism operated by a lever connected by a rod 220 to an arm loose on a shaft 224 and so arranged that the piston is depressed when the nozzle is seated in the mould socket. The pump-operating mechanism is arranged to permit of the vertical movement of the pot &c. and also of its outward swinging movement, when desired, for inspection &c. The arm 223 fast on the shaft 224 is connected by a rod 222 to the operating-lever 221, and the arm 223 engages a latch 226 pivoted on an arm 227 attached to the arm to which the rod 220 is connected. The injecting-mechanism is suspended, as when setting the justifying-wedges, by disengaging the latch 226 from the arm 223. This is effected by an arm 230 on a shaft oscillated by a rod 236 &c. The arm 230 is moved by a longitudinal movement of its shaft into position to engage a spring pin on the latch 226. This shaft is so moved when levers which adjust the justifying-wedges are operated. The arm 230 &c. may also be moved on its shaft for the same purpose by a hand-operated rod 240 when desired by the operator. Galley mechanism. The type is ejected from the mould by the mould slide into a slot in a sliding type-carrier, provided with means for holding the type. The carrier moves in an inclined direction so as to carry the type downward out of the path of the matrix case, and it is coupled to and moves the sliding block which covers and uncovers the side of the mould. The carrier is provided with means for holding the type in position, and moves it into position to be ejected from the carrier by a reciprocating pusher into a line channel. The mouth of the line channel has speciallyarranged spring sides. The line of types when collected in the line channel is moved along into position opposite the mouth of the galley 270 by means of fingers pivoted to and operated by a slide. In this position, the line of types is between a movable bar 273, forming one side of the channel, and a rule in the mouth of the galley. The rule is lifted and the bar 273 then moved to push the line into the galley. The bar 273 is carried by a pivoted arm. One side of the galley is adjustable, being formed by an arm on an adjustable block 305. A tripping-block is mounted in guides in this arm, and, when the line is too long or too short, this trip block is engaged and moved by the types or a follower which slides in the line channel. The trip block operates a lever 308 engaging and operating a lever 309. The lever 309 operates normally to hold a belt-shifting lever so that the belt is on the fast pulley, but, when the levers 308 and 309 are moved by the trip block, the belt-shifting lever is released and the belt is