Patent GB-432966-A (GB)
Title: Improvements in or relating to type line-casting and composing machines
IPC: B41B27/00
Filed: 1934-02-07
Abstract: 432,966. Type-bar-making machines. TELETYPE CORPORATION, 1400, Wrightwood Avenue, Chicago, U.S.A.-(Assignees of Walden, L. M. ; 7959, Ridgeland Avenue, Chicago, U.S.A.) Feb. 7, 1934, No. 4001. Convention date, Feb. 16, 1933. Addition to 415,798. [Class 100 (iii)] Driving-mechanism ; assembling matrices; keyboards.-The automatic control-mechanism described in the parent Specification is provided with : (1) means for preventing the complete descent of the assembler-elevator in the event of the line not being delivered to the line-delivery slide, so that composition of a new line cannot be commenced, (2) a pivoted keyboard, to give access to the matrix-releasing mechanism, and (3) means operated by the movement of the assembler-elevator for automatically shifting the rail that supports the matrices in the upper position. (1) The line delivery-slide 407, Fig. 4, which is operated by an arm 211 and a spring 408, is normally retained in the line-receiving position by a latch 410 having a depending part 411, which lies in the path of the assembler-elevator 212, so that the slide is released when the elevator reaches the top of its stroke. If the elevator fails to complete its stroke, it is arrested during the down stroke by a pivoted stop-member 412, Fig. 5, which is moved into the path of a stop 419 on the rod 401 that raises the elevator. The stop-member 412 is operated from a rod 213, which, as described in the parent Specification, must be moved into its right-hand position in order to permit the clutch of the elevator operating-shaft to close. The rod 213 is controlled by a rocking member 402 and a lever 208 carrying a roller 405, which bears against the delivery-slide arm 211. If the delivery-slide has been operated, the consequent movement of the lever 208 and of the member 402 withdraws the stop-member 412 from the path of the stop 419, so that the elevator can descend fully. (2) The keyboard is pivoted on a vertical axis at one side, and is held in normal position by a locking-bolt at the other side. A hand-operated locking- member is provided to engage the elevator-arm and prevent the raising of the elevator when the keyboard is out of operative position. The rod 401, Fig. 4, that raises the elevator, is detachably connected thereto by a hook portion, which engages a screw on the elevator and is held in engagement by a blade spring. (3) A longitudinally movable rail 306, Fig. 11, for supporting matrices in the upper position in the assembler-elevator is operated, as described in the parent Specification, by a lever 307, a rod 311, and a T-shaped lever 314, pivoted on the elevator-arm 319. The lever 314 is, as heretofore, shifted into either of two positions, to adjust the rail 306, by a lever 318 operated by two special selector-bars. According to the invention, the rail 306 is always located in the active position when the elevator is at the top of its stroke, in order to lock the matrices in the position in which they have been assembled, and is brought back into the inactive position as the elevator descends. This is effected by location of the pivot 435 of the elevator lifting-rod 401 at a greater distance from the axis 25 of the elevator-arm 319 than the stud 436 connecting the rod 311 to the lever 314. A spring-pressed detent 432 holds the lever 318 in either position of adjust ment and permits it to be moved from one position to the other. If the lever is set for the active position of the rail, it is automatically moved into the inactive position as the elevator rises.