Patent GB-191414580-A (GB)
Title: Improvements in or relating to Adding Machines.
Inventor: WADE HAROLD
Filed: 1914-06-17
Granted: 1915-06-17
Abstract: 14,580. Wade, H., [Burroughs Adding Machine Co.]. June 17. Tabulating and carriage-returning mechanism.-In adding-printing machines, such as those of the Burroughs type, the paper-carriage can be moved backwards or forwards by operating a hand-lever arranged to move along one side of the machine adjacent to a tabulating-scale. As applied to a machine of the kind described in Specifications 1810/08 and 16,800/08, comprising a paper - carriage geared to a reversible spring motor 2 and provided with a rock-shaft 3 carrying adjustable tabulating - stops 4, the hand-lever 13, Figs. 3 and 5, is mounted on a stud 14 at the left side of the casing and is geared by sectors 15, 16, 16<b>, a pinion 18 and bevel-gears 20, 21 to the spring motor 2. The hand - lever moves between guide - plates 70, 71 and adjacent to a flanged plate 22 adapted to receive index-slips 23 which are provided with inscriptions corresponding to the class of tabulation being effected and are set in positions determined by the positions of the stops 4 on the shaft 3. In forward tabulation, the hand-lever is moved towards the rear by the movement of the carriage, the index-slips indicating the columnar position, and the carriage can be returned from any position by pulling the hand-lever to the front. In a modification, the hand-lever gears directly with the pinion 18 and is movable rearwardly for carriage-return. Tabulation may be effected without using the stops 4, by providing adjustable stops 72 adapted to engage a stop 13<c> on the hand-lever. The stops 72 and the stop 13<c> on the hand-lever are bevelled and the handlever is laterally flexible so that during the return of the carriage, the hand-lever passes over the stops as it is pulled forwards, but in the rearwards movement of the hand-lever it is arrested by each of the stops and the carriage is arrested in a columnar position. The handlever is released by being flexed laterally. The stops 72 are formed with a square shank 72<a> engaging a slot in the plate 70 and are secured by a nut 73. The provision of stops 72 enables the operator to move the carriage readily to and from any columnar positions and the tabulation can be adjusted without the operator leaving his seat. In some cases, one or more stops 4 may be used for determining columnar positions between those determined by the stops 72. Line - spacing mechanism; space - key. and tabulating - key actions.-(1) Line - spacing is effected automatically on the return of the carr:age to the initial position from any position, by means of a cam 25<a>, shown in a rear view in Fig 10, adapted on the return of the carriage to rock abnormally the shaft 3 by engaging a finger 24 thereon. The shaft is provided with an arm 31, Fig. 11, engaging a fork in a rocking member 33 carrying a pawl 35 which is normally clear of the usual line-space wheel 30, but is moved into engagement on abnormal rocking of the shaft. The cam 25<a> is formed on an arm 25, which is pivoted at 27 and is arranged so that after the finger 24 has passed over the incline 25, the carriage being then slightly beyond the initial position, the arm is rocked clear by the engagement of the finger with a bevel 25<c> while the carriage is being moved by the spring motor to the initial position. The member 33 is formed with a detent 35<a> adapted to engage the usual star-wheel. (2) A special key 50, Fig. 11, for tabulating or line-spacing, operates a lever 53 engaging a rocking frame 57 provided with a roller 59 arranged over a bail 60 secured to the rock-shaft 3. On depressing the key until the operator feels the pawl 35 is engaging the wheel 30, the shaft 3 is rocked through a normal amount and the carriage can run to the left until it is arrested by one of the stops 4, columns being skipped if necessary. On depressing the key further, the shaft 3 is rocked abnormally and the pawl 35 operates the line-space wheel. The key 50 can thus be used for line-spacing in any position of the carriage. and by restraining the hand-lever 13, linespacing can be effected without allowing the carriage to shift.