Patent GB-386787-A (GB)
Title: Improvements in tabulating mechanism for typewriting machines
IPC: B41J25/18
Filed: 1932-01-05
Abstract: 386,787. Typewriters. ROYAL TYPEWRITER CO., Inc., 2, Park Avenue, New York, U.S.A.-(Assignees of Myers, L. C.; 20, Wilson Place, Freeport, and Handley, G. F. ; 7030, 83rd Street, Glendale, both in New York, U.S.A.) Jan. 5, 1932, No. 324. Convention date, Dec. 17, 1931. [Class 100 (iv).] Tabulating - mechanism ; tabulating - key actions.-In mechanism comprising column stops arranged on the carriage at letter-space intervals and selectively movable into position for co-operating with the denomination stops, 'operation is facilitated by providing means for operating one of the denomination stops either by its own key or by the key of the usual tabulating-stop. The column stops may be so mounted in a pair of racks as to swing into operative or inoperative position. The column stops are restored, during travel of the carriage in either direction, by means of a manually positioned cam provided with rollers. The machine shown in Fig. 1 comprises (i) a rocking tabulating-stop 63 connected to a tabulating- key lever D, (ii) a carriage-releasing lever 68 having an arm 71 abutting on the tabulating- stop, and (iii) a set of denomination stops 72 .. 81, Fig. 7, connected to denomination keys F and co-operating with a carriagereleasing bail 85 which abuts on a shoulder 86 on the tabulating-stop. The carriage 3 is now provided with racks 10, 11, Fig. 8, for supporting column stops B at letter-space intervals, the racks being secured to the carriage endplates, and being provided at the middle with a distance-piece. Each column stop is formed with arms 21, 22 embracing the rack 10, abutments 23, 24 for engaging the rack 11, a crosspiece 25 engaging the teeth of the racks and so shaped as to permit of the column stop being rocked into the forward or rearward position, and a spring 28 for retaining the column stop in either position. The column stops are normally in the forwards or inoperative position and are rocked rearwards, for subsequent co-operation with the denomination stops, by means of a swinging pusher 59 connected by a link 55, transverse lever 52, bell crank 47, and link 45 to a setting-key lever C. The denomination stops 72 .. 81 are connected in the usual manner to their denomination keys F by means of links, and bell cranks mounted on a shaft 87. The connections of the denomination stop 72 are however so arranged that it can be operated either by its key F or the tabulating-key D. depression of either key being without effect on the other. For this purpose the tabulating- key lever abuts on an arm 89 on the shaft 87, and another arm 91 on the shaft has a pin 92 engaging a bell crank 95 which is loose on the shaft and is connected by a link 96 to the denomination stop 72. Further, the key F for the denomination stop 72 is connected to an arm 111 which is loose on the shaft and rests on a pin 112 on the bell crank 95. The tabulating- key is employed for simple column work, operation being thereby facilitated since the operator does not have to move his hand on to the bank of denomination keys to select the decimal key. A device for restoring the column stops B to forwards position during travel of the carriage in either direction consists of a cam 131 and rollers 132, 133 mounted on a pivoted bail 122, the rollers being behind and at the sides of the top of the cam. The device is held in normal position by a spring 136 and is moved into operative position by a fingerpiece 142, stops being provided for limiting the movements.