Patent GB-558572-A (GB)
Title: Improvements in or relating to typographical composing machines
IPC: B41B11/06
Filed: 1942-09-01
Abstract: 558,572. Type-bar-making machines. MERGENTHALER LINOTYPE CO. Sept. 1, 1942, No. 12301. Convention date, Dec. 17, 1941. [Class 100 (iii)] Magazines.-Relates to (1) means for facilitating removal of the magazines, and (2) the construction of the magazine baseframes. (1) The means for spreading the magazines apart before removal are mounted on the machine frame independently of the shift-frame, and comprise a pair of arms N<SP>2</SP>, Fig. 2, arranged one on either side of the magazine bank and provided with spaced lugs N<SP>9</SP>, which are adapted to engage under lugs A<SP>13</SP> on the magazine base-frames A<SP>1</SP> when the arms are rocked forward. The arms have slots at their lower ends, by which they are guided on an operating-shaft N mounted on the machine frame and provided with a handle N'. Cranks N<SP>6</SP> on the shaft are connected by links N<SP>3</SP> to intermediate points on the arms. When the handle N' is mould downwards, the arms N<SP>2</SP> are first moved into engagement with the lugs A's on the base-frames, and are then raised, so as to lift the upper base-frames away from the magazine in use. The lugs N<SP>9</SP> on the arms N' are rather more widely spaced apart than those on the base-frames, so that the magazines are lifted in succession from the top downwards. The magazine to be removed is raised from its base-frame by a lifting-plate F,. Fig. 4, which is pivoted at its upper end and is itself raised by a pivoted cam-plate G. The cam-plates of the different magazines are mounted in the baseframes on rock-shafts G<SP>1</SP>. As a magazine comes into operative position, its rock-shaft is automatically coupled by a tongue-and-groove connection to a common operating-device in the form of a rotatable member H mounted on the machine-frame. The member H is rotated, in order to raise the magazine, by the movement into operative position of one of the pivoted arms K, which serve to support the magazine during removal, the member H being connected to the arm K by a toothed segment N' and a pinion H<SP>5</SP>. The cam-plate G first engages the magazine by an intermediate bent portion g, so that a greater mechanical advantage is afforded during the first part of the stroke. The arm K is locked against movement until the magazines have been spread by the engagement of an arm on the rotatable member H with a lug on the rock-shaft G<SP>1</SP> of the magazine next above the one in operative position. Each magazine is normally locked to its base-frame by latches M, which are held in active position by cams on the rockshafts G<SP>1</SP>. When a rock-shaft is rotated for the purpose of raising a magazine from its base-frame, the latches are withdrawn by spring action. The arms K are provided with inwardly projecting ribs K<SP>3</SP>, K<SP>4</SP> for supporting the magazines by their rearmost crossbars during removal. The ribs K<SP>4</SP> are deeper than the ribs K<SP>3</SP>, and serve for the removal of the front section of a magazine of the split variety, which is narrower at its rear end than the ordinary magazines. The removal arm K at the right-hand side of the machine is caused by screw action to move towards the opposite arm as it is rotated into operative position, so as to allow for the smaller divergence of the righthand sides of the magazines. (2) Each of the magazine base-frames is built up from steel bars welded together at their ends, and comprises two side-bars of angle-section, a front bar of channel-section, and a flat rear bar. Two intermediate angle-bars, between which is pivoted the magazine lifting-plate F, extend from the front to the rear of the frame. Two forwardly projecting arms, welded to the front bar, support the rock-shaft G<SP>1</SP> and banking-screws A<SP>12</SP> for spacing the base-frames apart.