Patent GB-415798-A (GB)
Title: Improvements in or relating to type line casting and composing machines
IPC: B41B27/10
Filed: 1933-03-03
Abstract: 415,798. Type-bar-making machines. TELETYPE CORPORATION, 1400, Wrightwood Avenue, Chicago, U.S.A.-(Assignees of Krum, H. L., Reiber, A. H., Goetz, M. T., and Walden, L. M.) March 3, 1933, Nos. 6582, 6583, and 6584. Convention dates, March 23, 1932, May 4, 1932, and June 6, 1932. [Class 100 (iii).] Driving -mechanism; assembling matrices.-An automatic control unit operated by a perforated record-strip, which may be prepared in a machine such as that described in Specification 355,933, is adapted to be supported below the usual keyboard, so as to permit of manual operation of the machine. Matrix-selecting and strip-reading mechanism. In addition to the usual key-levers 57, Fig. 7, there is provided a set of levers 27, the rear ends of which, like the keylevers, engage in notches in the escapement-operating weights 59. The forward ends of the levers 27 are engaged by bell-crank levers 65, the vertical arms of which can be engaged by selector-bars 33, arranged in scissors-like formation, and passing on opposite sides of a set of permutation or code bars 32, which are notched on both edges. The selector-bars are mounted by open notches on a shaft 69, and tend to close on the code-bars under the action of springs 71. The selectorbars are alternately spread apart and released by a shaft 53 having two opposite cam-projections. Each rearrangement of the code-bars under the action of the record-strip permits a single selector-bar to enter aligned notches therein, and the forward end of the bar is thereby brought into the path of a reciprocating actuator 77, by which the bar is driven forwards to actuate the corresponding bell-crank lever 65 and matrix-releasing lever 27. The levers 65 engage their pivot-rod by means of open notches, and are held down by springs 67, so as to be able to yield in the event of an obstruction to the movement of a lever 27. The code-bars 32 are operated by bars 82, Fig. 9, having notches to receive the vertical arms of T-shaped levers 87. Above the levers 87 is a set of feeler-levers 92 carrying feeler-pins 104, which are raised into contact with the record-strip 111 by springs under the control of a cam. The levers 87 are lifted bodily into engagement with shoulders 93, 94 on the lower ends of the feelerlevers and are thereby rocked in one direction or the other, the code-bars being rearranged accordingly. The number of permutations given by the six code-bars 32 is increased by the use of a seventh code-bar, which is controlled by two special selector-bars. One 139, Fig. 3, of these selector-bars acts to retract a latch 143 and release a lever 145, which is operated to shift a lever 145, which is operated to shift the seventh code-bar by a spring 146. The second selector-bar 141 acts on an arm 152 of the lever 145 to shift the code-bar in reverse direction, and to re-engage the lever with the latch 143. The record-strip reading-device and the cam-shaft 53, that spreads the selectorbars 33, are operated from a shaft 45, Fig. 9. A second shaft 48 serves to operate the assemblerelevator of the machine. Both the shafts 45, 48 are driven through one-revolution clutches from constantly rotating gears 44, 47, which are driven from the machine. Assembler-elevator operation. The assemblerelevator 212, Fig. 5, is raised by an arm 319 on a shaft 25, which is rocked by a cam 55, Fig. 9, on the elevator driving-shaft 48. The shaft 48 is started by a special signal in the record-strip which also stops the record-reader shaft 45. The elevator-signal causes the operation of a special selector-bar 156, the forward movement of which rocks a bell-crank lever 158, and acts through a rod 163 to move a clutch-releasing lever 166 into position to withdraw the movable member 167 of the spring-loaded clutch that drives the record-reader shaft 45. A latch 171 on a bar 169 engages behind a shoulder on a lever 173 to hold the parts in shifted position after the return of the selector-bar 156. The lever 158 also moves one end of a floating lever 175, which serves to start the elevator-shaft 48. To ensure that the shaft is not started unless the elevator has been returned to its lower position, the rear end of the floating-lever is engaged by a yoke 207, which is shifted to the right by the delivery slide-arm of the machine during the descent of the elevator. When both ends of the lever 175 are shifted, its middle part acts through levers 216, 219 to allow the clutch 222 of the shaft 48 to close. The cam 55 then acts through a lever 224 to raise and then lower the elevator. At the end of one revolution of the shaft, a cam disengages the lever 173 from the latch 171, so that the lever 158 is returned by a spring and the record-reader shaft 45 is re-started. The rock-shaft 25, Fig. 5, that raises the elevator may be operated by means of a handle 226, Fig. 9, instead of automatically by the lever 224. The lever 224 acts through a yielding connection, to prevent damage in the event of obstruction to the elevator. When the elevator is raised, a finger 280, carried by the lever 224, releases a pivoted spring-pressed member 241, which thereupon locks the clutch-releasing lever 166 of the reader-shaft 45, so that the shaft cannot be re-started. As two adjacent elevatorsignals are sometimes perforated in the strip for a special purpose, means are provided for preventing the operation of the elevator unless a number of matrices have been assembled. These comprise a locking-device for the special selector-bar that initiates the movement of the elevator, the selector-bar being released by the advance of the assembly-slide of the elevator. A control-switch is provided for locking the clutch-releasing lever 166 of the record-reader shaft 45 when the machine is to be operated by hand. Assembler-rail shift. Matrices are supported at the upper level in the assembler-elevator by a retractable rail 181, Fig. 5, operated by a bell-crank lever 186, the movements of which are limited by stop-screws 187. The lever 186 is operated by a link 188 and a lever 189, which is held in one position by a latch 194, and is shifted by a spring when the latch is retracted by hand or by a special selector-bar. In a modification, a longitudinally movable rail 300, Fig. 23, operated by two selector-bars is used. The end of the rail has an upturned projection 302, which serves to hold the matrices positively and to determine their position. The wall of the elevator has a bevelled part 303 to guide the matrices, and the part 304 of the wall that overlies the rail 300 is yieldingly carried by a spring 305.