Patent GB-691681-A (GB)
Title: Improvements in or relating to typographical composing machines
IPC: B41B11/06
Filed: 1949-09-06
Abstract: 691,681. Type-bar-making machines. LINOTYPE & MACHINERY, Ltd., SCOTT, R. H., and HAYWARD, A. S. Oct. 25, 1950 [Sept. 6, 1949], No. 23032/49. Class 100(iii) A typographical composing machine of the kind known under the Registered Trade Mark " Linotype" comprises a column of at least three magazines adjustable in opposite directions to bring any selected magazine into operative, position, a continually rotatable driving member, a periodically operated driven member rotatable in a single direction, a one-way clutch for coupling the driven to the driving member means operated by the driven member for adjusting the column automatically in one direction or the other, means for engaging the clutch at will, automatic means for disengaging the clutch, and pre-selecting means -for effecting the actuation of the disengaging means upon arrival of the selected magazine at an operative position, the pre-selecting means being capable of being set manually to any one of a number of settings corresponding to the number of magazines in the column, one magazine being associated with each setting whereby the clutch is automatically disengaged when the magazine associated with a selected setting arrives at its operative position. The magazine column and bracket 3, 4, Fig. 1, are counterbalanced by a weight 13 connected to a pulley 10, in the manner described in Specification 61.7,384, and shifted by a power drive from a continuously rotated shaft 18, which may be an intermediate shaft of the machine or an independent shaft . A friction clutch 19, 20, Fig. 4, is provided, the driven member 20 being rotatable on the shaft and operating the column shift through a worm 21, worm wheel 26, profile cam 30, cam roller 31, lever 33, adjustable link 35, and arms 36, 38, whereby the column is moved up or down according to the position of the cam, until a selected magazine is in operative position. Alternatively, the cam is replaced by a helical gear driving a shaft which has two alternative sprocket and chain connections with the pulley 10, selectively engaged by a two-way dog clutch, and each driving the pulley 10 and the column in the opposite direction, the clutch being automatically changed over as the column reaches each limit position by a finger. movable with the bracket 4 engaging one of two plungers on a slidable bar connected to the clutch. The pulley 10 constitutes a magazine locator member, having four studs L<SP>1</SP>, L<SP>2</SP>, L<SP>3</SP>, L<SP>4</SP>, Fig. 3, one for each of four magazines and engageable by a locator arm 14 when the magazine is correctly in position. In operation, a hand-lever 17 is moved downwards, swinging the arm 14 out of engagement with the stud, the arm 14 being held retracted by a catch 51 engaged by a latch 52. The arm 14 at the same time engages the clutch 19, 20 through a link 49 and toggle mechanism, whereupon the column begins to move. A triangular tumbler 59 pivoted on the bracket 4 thereupon moves along a bar 56 mounted on the guide frame 5 for parallel movement. A selector control handle is previously set in one of four notches on a -dial 76 according to the magazine to be selected,and by means of shafts 72, 69 moves a cam bar 66 into such a position that a selected one of four pivoted interponents 62 is moved into the path of the tumbler. When the selected magazine is in position, the interponent swings the tumbler, and the bar 56 releases the catch 52, whereupon the arm 14 swings back to release the clutch and engage a stud on the pulley 10 to lock the column in position.