Patent GB-523505-A (GB)
Abstract: 523,505. Calculating-apparatus. MERCEDES BUROMASCHINEN-WERKE AKT.- GES. Jan. 10, 1939, No. 782. Convention date, Jan. 10, 1938. [Class 106 (i)] A typewriting-calculating machine is provided with totalizers arranged to be selectively coupled with each other by intermediate mechanism mounted in the totalizers. The totalizer unit comprises a lower column totalizer 1 and an upper storage totalizer 2 swinging on a shaft 79 mounted on the lower totalizer. Operation of a lever 174 brings the driving wheel 93 of totalizer 2 either directly into gear with a wheel on axle 41 of totalizer 1 or indirectly into gear therewith through the medium of an intermediate pinion 97. Totalizer 2 thus can operate either in the same or opposite sense to totalizer 1 when it is coupled therewith. Numeral wheels 106 are displayed through a slot S in totalizer 2, and numeral wheels 39 are displayed through a slot S1 in totalizer 1. The latter is mounted on a totalizer suspension rail 204 of a paper carriage. Mounted on a bar 5 in totalizer 1 are a number of spring operated locking levers 7 each having a tooth or other locking arrangement which engages with the teeth of a gear 15 in the counting train of its particular denomination. Each lever 7 also has a tooth 19 engaging with a corresponding locking lever in the totalizer 2 and a fork 21 operating an arm 29 carrying a coupling gear 28 which starts operation of the wheel that may be coupled with totalizer 2. The numeral wheels 39 are driven from wheel 15 through a chain of gears 32 and 36 which carry a tooth 36a that may co-operate with a zero stop in total taking. Tens transfer in the two totalizers is quite independent and only the denomination in active position can have its coupling gear 28 operated to cause values to be transferred from totalizer 1 to totalizer 2. When a value is introduced into totalizer 1 similar operations occur at each denomination so that only the introduction of a value into the units piace will be described. Before the operation all wheels 15 are locked but when the units place is brought into active position depression of the calculating key operates a finger F which swings a lever 7. The latter swings a flap 45 which operates levers 70 which unlock the driving wheels 15 of higher denominations and the lever 7 itself unlocks the wheel 15 of its own denomination and also moves the coupling gear 28. The driving wheel of the typewriter calculating mechanism (not shown) then drives wheel 15 an appropriate amount which is shown on wheels 39. Finger F then allows lever 7 to return to its original position and all parts are locked again. The tens transfer arrangements between the denominations comprise units consisting of two spur-gears on each side of a Maltese wheel. Each wheel 15 carries tens transfer cams 16a which turn one of the spur-gears of the unit which is freed at this moment by a recess 17a on wheel 15 releasing the Maltese wheel. The other spur-gear then turns the higher denomination wheel through one unit. When it is desired to introduce a value into totalizer 2 lever 174 is operated to bring either wheel 93 or 97 into engagement with the driving wheel operated by totalizer 1 according as to whether the value is to be added or subtracted in totalizer 2. The finger F is then operated to move the locking lever 7 in totalizer 1 which through its projection 19 operates a similar locking lever 108 in totalizer 2. This lever 108 operates a flap 119 which acts on the ends 151 of locking levers for higher denominations and it also unlocks the driving wheel 93 at its own denomination. When the totaiizer 1 is now operated the same value is registered additively or subtractively in totalizer 2. The finger F then restores lever 7 and relocks the whole apparatus. By adjusting lever 174 the following operations are seen to be possible. A total mav be taken from totalizer 1 and simultaneously transferred to totalizer 2. An amount may be added into totalizer 1 and simultaneously added or subtracted into totalizer 2. Totalizer 1 may be operated to bring totalizer 2 to a zero reading and thereby transfer its value to totalizer 1. The lever 174 besides connecting totalizer 2 to totalizer 1 additively or subtractively to perform the above operations also operates a rack which locks totalizer 2 when it is not coupled to totalizer 1. The latter bears fixed hooks 207 and 208 engaging rail 204 and also a pivoting hook 210. A locking lever 228 operates a catch 217 which controls a lever 242 which is manually operated to swing hook 215 when it is desired to remove or replace the totalizer.