GB399019A - Improvements in or relating to tally roll and like mechanisms for calculating machines, typewriters and the like machines - Google Patents

Abstract

399,019. Typewriters &c. BURROUGHS ADDING MACHINE CO., 2nd Avenue, Detroit, Michigan, U.S.A.-(Assignees of Muller, R. L. ; 2nd Avenue, Detroit, Michigan, U.S.A.) Sept. 22, 1932, No. 26379. Convention date, Sept. 23, 1931. [Class 100 (iv).] Web feeding and guiding arrangements ; linespacing mechanism.-A. tally-strip or the like passes freely between the plates and printing- mechanism of a calculating-machine, typewriter, or the like, and co-operates with normally disengaged feed-mechanism, the arrangement leaving the tally-strip normally free to be pulled forward by hand. The feed-mechanism may comprise feed-rollers associated with automatically operated ratchetmechanism, provision also being made for operating or disabling the feed-rollers by means of a knob. In the Burroughs machine, shown in Fig. 1, a tally-strip 27, stored on a roll 40 at the rear of the machine, is guided to the front of the platen P by a stationary shoot 42 and is passed between the platen and the types 19, and under a tearing-edge 47. When a double inkribbon 25, 26 is employed for duplicating on the tally-strip and a sheet 28, the tally-strip is guided between the ink ribbons by edge-guides each consisting of a pair of fingers 43, 44 having parts arranged between the ink ribbons, and depending parts which are flared to form a guide-throat. To facilitate threading of the tally-strip, the leading edge is cut diagonally by means of an oblique tearing-edge arranged over the roll. Feed-mechanism comprises feedrollers 50, 54, Fig. 3, passing through slots in the shoot 42, the shaft 55 of the feed-rollers 54 being guided by slots 56 and connected to springs 57. The feed-rollers 54 are normally held in disengaged position by co-operation of the shaft 55 with lugs 62 on a bail 60 having a lug 64 co-operating with an abutment 63 which is mounted to slidc on a link 65 and is held in forward position by a spring 66. The tally-strip is normally free and can be grasped and pulled forward by hand. The shaft 51 of the feed-rollers 50 is geared to a shaft 82 having a ratchet wheel 83 co-operating with a pawl 84 on a rocking arm 86 having a pin 88 engaging a slot in the link 65. A spring 89, arranged between the link and rocking arm, normally holds a pin on the rocking arm in contact with a stop 91. The link is reciprocated at each operation of the machihe. During rearward movement of the link, the pawl is moved idly, the abutment 63 is removed from the lug 64, and the springs 57 rock the bail 60 and move the feed-rollers 54 into engagement with the feed-rollers 50. During forward movement of the link,.the pawl turns the ratchet wheel to line-space the tally-strip, and thereafter the bail is rocked to raise the feed-rollers 54. The feedrollers can be operated manually by means of a knob 93, Fig. 3, which is secured to a sleeve 92 having slots engaging a pin 82a on the shaft 82. A collar on the sleeve engages a stud 96 on a bell crank 97 formed with a finger 101 having a lug 102 engaging the abutment 63. When the knob is pushed in, the abutment is pushed rearwards, the feed-rollers 54 are permitted to engage, and the tally-strip can be fed by turning the knob. On subsequent operation of the machine, a lug 111 on the arm 86 engages the bell crank 97, and the knob is restored to normal position. The feedmechanism can be disabled by pulling out the knob and thereby causing the finger 101 to hold the bail 60 in normal position. A detent 103 co-operates with notches to hold the bell crank in normal or displaced position.