Patent GB-191400062-A (GB)
Title: Typewriter Tabulator and Billing Device.
Inventor: ERWIN WILLIAM
IPC: B41J25/18
Filed: 1914-01-01
Granted: 1914-11-26
Abstract: 62. Erwin, W. Jan. 1. Tabulating - mechanism; tabulating- key actions. - Tabulating - keys 2 are pivoted at the middle on a rod 1 and are connected to stop-rods 5 adapted on depression of the rear ends of the keys to effect column-selection and on depression of the front ends of the keys to effect denominational tabulation. In the arrangement shown, the rods 5 are L-shaped, the horizontal arms converging to the rear and the approximately vertical arms 5<x> being formed with branches 9, 10 and being mounted by horizontal slots 13 on a rod 12. The branches are arranged in contact side-by-side, the end branches engaging plates 11 to which the rod 12 is secured. The branches 10 are formed with stop-noses 20 arranged at graded heights and each adapted to engage one of a series of columnselecting stops 5“ ... 104“ formed on a stop-bar 18 on the carriage. The branches 9 are formed with stop-noses 15 adapted to engage stops 16 formed on the stop-bar, or by depressing the stopbar by the device described below, the stop-noses may engage ordinary stop 17 adjustably mounted in a rack formed on the stop - bar. The stop branches 9, 10 are each a letter space thick and the stop-face of the fifth branch from the left is in the vertical plane of the printing point. The stops 5“ ... 104“ are arranged to arrest the carriage at any selected tenth letter-space, these stops being provided at intervals of eleven letter-spaces starting at 5“. This arrangement is adopted to compensate for the thickness of the branches, and the lostmotion play of three-quarters of a letter-space in the escapement. The stops 16 are provided at intervals of ten letter-spaces starting at 5“. The carriage can be brought to any letter-space by depressing successively the rear end of the key corresponding to the column and the front end of the key corresponding to the denomination. If column-selection over more than ten columns is desirable the stops 5“ ... 104“ are repeated, starting at 105“, two operations of the keys being necessary in some cases. When the adjustable column-stops 17 are employed the stop-bar is depressed by means of a handle 42 to bring the stops 17 into the range of the stop-noses 15. The stop-bar is mounted in vertical slots in brackets 37 and carries a rock-shaft 40 formed with cranked ends, the crank-pins being arranged to slide in horizontal slots in the brackets 37 and the handle being formed with a slot which fits over the crank. The handle is normally vertical and is turned upwards through 180 degrees to depress the stopbar. A handle may he provided at each end of the rock-shaft. Keys.-The tabulating-keys2are numbered from 1 to 10 at the front and rear ends, the numbers at the rear reading from left to right and the numbers at the front reading from right to left ; the keys are also provided at the middle with marks indicating the decimal point and the denominations and the separating-points. The keys are formed with curved surfaces to receive the fingers. Key locks.-When the stop-bar is in the lower position, depression of the rear ends of the keys 2 is prevented by the engagement of lugs on the branches 10 with the rock-shaft 40. Carriage-releasing arrangements.-The loose dog 31 of the escapement is depressed for carriagerelease by means of a bell-craok lever 35 arranged under a finger 30 suspended from a rocking-frame 25, the cross-bars 24, 27 of which engage inclines 23, 26 on the branches 9, 10. Rollers 28 may be provided on the cross-bars.