Patent GB-412200-A (GB)
Title: Improvements in or relating to type line casting and composing machines
IPC: B41B27/10
Filed: 1932-12-20
Abstract: 412,200. Type-bar-making machines. TELETYPE CORPORATION, 1400, Wrightwood Avenue, Chicago, U.S.A.-(Assignees of Potts, L. M.; 1202, Maple Avenue, Evanston, Illinois, U.S.A.) Dec. 20, 1932, No. 36086. Convention date, Jan. 2. [Class 100 (iii).] Driving-mechanism; assembling matrices; keyboards ; magazines; escapements.-In a mechanism for automatically controlling type-barmaking machines from a perforated record-strip, the escapement-reeds 66, Fig. 5, of the machine are operated by push-bars 36, which are rocked by selector-bars 35 into the path of a universal bail 62. Any bar 36 which is rocked into operative position is locked by the descent of a bar 60, so that the selector-bars can return independently. The selector - bars cooperate with a series of notched code-bars 34, which are re-arranged by the action of the record-strip, so as to permit a single selector-bar to be advanced by its actuating-spring 61. The selector-bars are returned after each operation by a rocking bail 68. The record-strip 32, Fig. 3, is interpreted by feelers 45, which are lifted into contact with it by springs 139, when released by a cam-controlled rod 135. Lugs 131 on rods 46, which are pivotally connected to the feelers, are thereby brought into the path of a camoperated hammer-bail 125, which acts through the rods 46 to release the holding-latches 127 of the corresponding code-bars 34, which are then shifted by springs. After each operation, the code-bars are restored by a bail 80, and are re-engaged by their latches. The push-bars 36 may be operated by hand, and have lugs 91, Fig. 3, bearing the characters to which they correspond. The power for operating the control-mechanism is obtained from the casting-machine, and is transmitted through two one - revolution clutches, which are controlled by an electromagnet, the circuit of which is made and broken by the assembler-elevator. The rods 46 that operate the code-bars may alternatively be actuated by a set of electromagnets 145 from a tape-transmitter of known kind. The rods 46 can also be hand-operated by means of push-buttons 148 for the purposes of testing, adjusting, or correcting errors. An additional code-bar controlled by the assembler-elevator is provided for bringing into use alternately two channels of the magazine which contain the same frequently-used character. In a modified strip-reading device, the code-bars 34, Fig. 23, are shifted by levers 326 each having a forked portion 327, between the arms of which is located a fixed bar 328. The feeler-levers 332 have depending L-shaped rods 334 which are rocked by a cam-operated lever 342. According as a feeler is in the upper or lower position, the end of its rod 334 passes into the fork of a lever 326 either above or below the bar 328, and the code-bar is adjusted accordingly. In order to double the number of permutations afforded by the six code-bars 34, two of the permutations are employed to operate a seventh code-bar, which is shifted by two special selector-bars. Removable keyboard. The code-bars may be operated manually by means of a set of key-levers 315, Fig. 18, mounted in a removable frame 314. The key-levers act on notched bars 316, a pair of which corresponds to each code-bar 34. The bars 316 are so notched that a projection on one bar of a pair corresponds to a recess in the other, and the bars are connected to T-shaped levers 323, so that, when one bar of a pair is depressed, the other rises. The levers 323 shift bars 325, which are connected by levers 326 to the code-bars. Assembler-elevator operation. At the end of a line, a special signal in the record-strip acts through a selector-bar to close a clutch and cause an elevator-cam shaft 52, Fig. 5, to make a half-revolution, whereby the assemblerelevator is raised. The lever 172, Fig. 3, that raises the elevator, is connected to its operating- cam through a yielding connection 174 to prevent damage. When the elevator is raised, the stripreading mechanism is interrupted by the breaking of the circuit of the controlling magnet. At the top of its travel, the elevator releases a delivery-slide arm 224, Fig. 14, the movement of which permits two control-levers 225, 226 to rock. The movement of the lever 225 releases the clutch of the elevator-cam shaft for a second half-revolution, by which the elevator is lowered to normal position. The descent of the elevator closes the circuit of the controlling magnet and re-starts the stripreading device. The lever 226 serves to prevent the rise of the elevator with another line, in case the delivery-slide arm 224 fails to return owing to the jamming of the matrices before their delivery to the mould, or other cause. Long or short line interceptor. The rise of the assembler-elevator is prevented if the assembled line is too long or too short to be justified. The assembler-slide 197, Fig. 14, carries a plate 199 having a stepped edge, which co-operates with an arm 184 on a sleeve 182 which can rotate and slide on a shaft 183. The sleeve 182 is rotated a step for each spaceband inserted in the line. The lever 172, that raises the elevator, carries a segment 176 containing a notch 177, with which co-operates a lever 178 connected to the sleeve 182. In the case of a line which is too long or too short, the lever 178 enters the notch 177 as the elevator begins to rise, and prevents its further movement. If the line is justifiable, the end of the arm 184 is overlapped by the plate 199, and the lever 178 is thereby held clear of the notch 177. Quadding-device. When the push-bar 36 that represents the em-quad is operated, it is locked in operative position by a spring-actuated lever 361, Fig. 14<a>, which engages behind a lug on the push-bar. The push-bar therefore remains in action until the lever 361 is reset by a wedge-bar 363 and a slide 364 carrying an adjustable abutment 365, which is engaged by an arm 366 on the assembler-slide 197. Assembling two-character matrices. Matrices are assembled at either a higher or a lower level by means of a longitudinally adjustable rail in the assembler-elevator. The rail is operated by a cam, which is clutched to a driving-shaft for a half-rotation under the action of special selector-bars and signals in the record-strip. The adjustment of the rail is suitably delayed to allow the previously released matrices to settle. Magazine-changing mechanism. Either of two magazines can be brought into use by means of a shift-device of known form, which is operated by a cam controlled by two selectorbars. Where the magazines are stationary, the escapement-reeds are moved into engagement with the escapements of one or the other magazine. Specifications 355,933 and 356,197 are referred to.