Patent GB-189902181-A (GB)
Title: Improvements in Type Composing and Casting Machines.
Inventor: BERTRAM WILLIAM ERNEST
Filed: 1899-01-31
Granted: 1899-04-08
Abstract: 2181. Bertram, W. E. Jan. 31. Linotype machines.-Relates to improvements in the monoline type composing and casting machine described in Specifications Nos. 16,200 and 17,135, A.D. 1893, and No. 27,630, A.D. 1897. The invention comprises improvements in (1) the matrix bars and spacers, and the assembly-box mechanism, (2) the aligning-bars, (3) the line carriage, and (4) the justifying-mechanism. (1) In Fig. 15 a matrix bar is shown in engagement with the aligning-bars 14, 15. Each matrix bar is provided with a series of perforations, into one of which enters a spring-controlled pin projecting from the plunger of the assembly mechanism just prior to the pushing forward of the bar between the gates of the assembly box on to the aligning-bars, turning or slipping of the matrix bars being thus prevented. The throat of the assembly box occupies a central position with relation to the width of the delivery portion of the magazine. The plunger is yieldingly connected with its reciprocating mechanism, so as to prevent damage resulting from the jamming of a matrix bar. Fig. 16 shows a spacer bar, the improvements consisting in the provision of a lug 9 having a recess 10 in its lower corner, and of the perforation 12 and slot 13 formed in the expanding and wedging portions respectively so as to allow of the entry of the above-mentioned pin in the act of assembling. (2) Two aligning bars 14, 15 are employed, of which the former is stationary and is attached to the upper of a pair of longitudinallygrooved guide-rails on which runs the line carriage which transfers the assembled line of matrices to the justifying and casting devices, and subsequently returns the depressed line to the distributing- devices. The aligning-bar 15 travels with the line carriage, and necessitates the provision of an additional aligning-notch 3<a> in the matrix bars, which are supported by the travelling aligning-bar alone after the carriage has moved from the assembly point. Frictional wear of the aligning- notches is minimized by the use of the travelling bar 15, which is moved forward to engage with the notches at the assembly point and drawn back to release the matrix bars after a printing-bar has been cast. (3) Fig. 7 shows in perspective view the line carriage detached from its guide-rails, and also the travelling aligning-bar 15. The assembled line of matrix bars is gripped between a fixed jaw 22, against which the leading end of the line abuts, and a movable jaw 23 which is constructed so as to descend and disappear within the slot 23<a>, while the carriage is moving to the left to receive a fresh line at the assemblv point. When the aligning-bar 15 moves forward to engage with the aligning- notches of the assembled matrix bars, the projection 20 is locked by the spring latch 28, which engages with the notch 21, but not with sufficient force to prevent the rearward movement of the bar 15 at the proper time. The projection 20 is never completely withdrawn from the slot 27, although shown withdrawn in Fig. 7 for the sake of clearness, and the bar 15 is therefore never released from engagement with the carriage. A rod 36, adjustable in length to vary the length of the cast printing-bar, has a locking-connection with the carriage jaw 22, and when released allows the jaws to be separated for the reception or discharge of the matrix bars. A screw shaft 37 effects the closing together and separation of the jaws. The line carriage is connected with an auxiliary carriage not shown in Fig. 7, which travels on a slotted guide-rail placed beneath those of the carriage proper. The auxiliary carriage supports mechanism for operating the jaws, screw shafts, &c. (4) Justifying is effected by the upward pressure of a shoe upon the lower ends of the space bars, the upper or expanding sections of which are held down by the curved flange 139 of a plate 138, Fig. 16, which can be drawn back to change a space-bar if necessary.