Patent GB-387279-A (GB)
Title: Improvements in or relating to typographical slug casting machines
IPC: B41B11/38
Filed: 1932-09-15
Abstract: 387,279. Typebar-making machines. MERGENTHALER LINOTYPE CO., 29, Ryerson Street, Brooklyn, New York, U.S.A. -(Assignees of Frolander, F. C.; 1144, Anna Street, Elizabeth, New Jersey, U.S.A.) Sept. 15, 1932, No. 25659. Convention date, July 1. [Class 100 (iii).] Clamping matrices. - In apparatus for quadding or centralizing short lines, the vicejaws are actuated through two distinct trains of connections from a vertically movable rod controlled directly from the main shaft of the machine, either or both jaws being disconnected when necessary. (1) The jaws are operated through two bell-crank levers E2, F2, Fig. 3, from a rod H, which passes through, and is carried by, a sliding sleeve H<1>, the rod and the sleeve being capable of a limited relative movement under the control of a spring H<7>, Fig. 4. The sleeve is depressed in order to close the jaws, by a spring acting under the control of a cam. After the line has been clamped between the jaws, the sleeve is locked by a rotatable eccentrically-mounted gripping- member J, which is operated against spring pressure by a head J<8> on a sliding rod J3. A limited separation of the jaws under the expansive action of the spacebands, when these are present, is permitted by upward movement of the rod H relative to the sleeve H<1>. The amount of such movement can be varied by means of a sliding stepped plate K2, which is adapted to be engaged by a pin K<1> on the rod H, and is adjustable by means of a cam-disc K<6> provided with a handle K<11>. The pump-stop lever, which is normally actuated by the righthand jaw, is operated independently of the jaw, in the case of short lines, by a lever L<1>, which is actuated through a lever L<9> and a slotted member L<5> by a pin L<11> on the rod J<3> that operates the gripping-member J. (2) The left-hand jaw E, Fig. 26, is adjusted on its supporting-block E<1> in accordance with the measure of the lines to be cast, by a rotatable toothed locking-member M<4> on the jaw, which engages rack-teeth M<2> on the supporting-block. The teeth of the member M<4> are cut away on one side, so that it can be turned out of engagement with the rack-teeth for adjustment of the jaw. A scale M<10> and a pointer M<11> facilitate the adjustment. The adjustment of the jaw E enables a line to be unequally indented at the two ends, if required. (3) The rod H, Fig. 3, is connected to either or both jaws by means of a grooved collar N<1>, which, as shown in plan in Fig. 12, has two segments N<2>, N<3> adapted to engage pins N<4>, N<5> on the jaw-actuating levers E2, F<2>. The collar can be rotated by means of a hand-operated rack 0 to connect the rod H with either jaw or to disconnect it from both. (4) Means is provided to prevent casting if the jaws fail to contact with the opposite ends of a line, as when the matrices become wedged in the elevator, so that the right-hand jaw is blocked, and the lefthand jaw does not contact with the other end of the line. The pump-stop lever L, Fig. 31, is normally locked by an arm R, which can be moved out of engagement by a bar R<5> supported on parallel links. The left-hand jaw E is connected to its actuating-lever through a yielding connection R<10>, which, when the jaw is arrested by the matrices, rocks the bar R<5> and releases the pump-stop. Assembling matrices.-To enable the linedelivery carriage to adapt itself to different lengths of line, the left-hand finger B<1>, Fig. 22, is mounted for free movement, and is urged to the right by a spring B<3>. The finger is normally retained by a detent S, which is carried by a lever S<2> and is retracted when the assembler rises, so that the finger moves into contact with the line.