US1041576A - Calculating-machine with printing device. - Google Patents

Description

B. BEHR.

CALCULATING MACHINE WITH PRINTING DEVICE.

APPLICATION FILED AUG.28,1911. I 1,041,576. Patented 0011.15, 191.2.

2 SHEETS-SHEET 1.

B. BEHR. CALCULATING MACHINE WITH PRINTING DEVICE.

APPLICATION 311,31) AUG. 28, 1911.

1,041,576, Patented 0 ct.15,1912.

2 SHEETS-SHEET 2.

BEBNHARD BEHR, OF

P5121? if all.

DRESDEN, GERMANY.

CALCULATING-MACHINE WITH PRINTING DEVICE.

Specification of Application filed August 28, 1911. Serial No. 646,310.

total in the adjusting mechanism to the type'mechanism. It 1s possible on transmitting to the total to move figure disks to a lower number so that an incorrect result is printed. The machine is accordingly locked for the plus movement, but not simultaneously also for theminus movement. For simultaneously also locking the minus movement disks provided with radially directed notches or recesses are employed, ac-

cording to this invention, in which at the moment of transmitting, the total operated pins engage, which are independent of the calculating mechanism, thereby locking the figure disks and the complete calculating mechanism. Any further movement of the crank or the lever is thus prevented. As the locking device is independent of the caiculat-ing mechanism 2 e. of the adjustable ruler, the ruler can be adjusted independently of the stationary adjusting device. It is not necessary in the practical calculation of decimal figures to print the complete total, but only that part which comes in question practically. Consequently the ruler is moved, before printing, such a distafio'e to the right that the surplus decimals are beyond the adjusting means fo rv'printing the total which has remained stationary. By this arrangement, on the comma changing its position, the commas are brought one under the other for the purpose of subsequent addition, which is of great importance for carrying out and checking the ad dition.

in the accompanying drawing :--Figures l and 1", together show the machine in side eievation out of operatior the parts not required for explanation j 2 and :2 together 2 tion ofthe device in the op t Fig. 3 is plan of a figure cash. modification according to 1. a n .33 liL t u- Letters Patent. rammed Oct. 15,1912.

disk is omitted, and the figure disk itself is employed as the notched disk. Fig. 5 is a vertical section of Fig. 4-.

On the bevel wheel of the change gear a: connected to the ruler s is mounted a disk 0-, which is shown in plan in Fig. 3. This disk is provided with peripheral notches of various depths corresponding to the numbers l to 9.

In the front wall of the machine are mounted rods n which under the action of spiral springs m engage with the peripheral notches of the disks 0. The rear end of the spring operated rods in. is hinged to a bell-crank lever h which is hinged to an arm is provided on the front wall of the machine. The free end of the bell-crank lever hissdetachablyqconnect'ed by means of a rod Z to the end of the bellcrank-lever f f. This bell-crank lever f f (known from application Ser. No. 558715) is at the front end of one arm provided with a toothed segment 6 which correspondingly to the depression of the keys 6 adjusts the corresponding figure disk. The detachable connection bet-ween the rod Z and the end of the arm of the bell-crank lever f f consists in providing the lever I with a forked end (Z which engages with a pin 2'- of the lever arm The lever arms f are by means of links 0 connected "to the toothed segment levers I) which in the known manner engage with the teeth of the type segment g. Below the rod Z is rotatably mounted a pawl 1" of which one end abuts against the lower edge of the rod Z. The other end of the pawl r is by means of a rod a connected to the operating lever p. The operating lever 7) is rotatably mounted on the shaft 2 which traverses the machine. For purpose of withdrawing the separate rods 12 simultaneously from the notches of the notched disks 0 by means of a single operating lever 79, there are mounted on the rotary shaft .2 disks Q) for each corresponding rod at which disks by means of a slot engage with the pins to of the rods 0.

In the position of the device illustrated in l the separate rods 'n are withdrawn rein the notches of the d? by rotating the "and lover p. Sin'iultanera. of the hand-lcver p which provided as a he n lever, has moved the connecting to the right whereby the pawl 1' has the lower end engages with a pin 2' of the bell-crank leversprings m are pressed into the notches of the disk 0. Simultaneously the pawl r is rotated and the forked end (i of the rod Z arm f so that in consequence of the coupling of the separate rods n to the toothed segment b each segment makes a movement corresponding to the corresponding figure and adjusts the corresponding segment with a corresponding type under the hammer of;

the writing mechanlsm.

In Thomas calculating machines in which, as is known, it is also possible to simultaneously multiply, there exists in an extremely annoying manner, in consequence of the extraordinary rapid rotation of the figure disks by means of the crank, a centrifugal action which leads to incorrect calculations. For this reason it is possible according to Figs. 4 and 5 to omit the special notched disk and to-provide the figure disks themselves with peripheral notches so that the figure disk simultaneously serves as notched disk. In this manner the mass setin motion is substantially reduced, especially by the reduction in material in consequence of the peripheral notches in the figure disk which are therefore themselves also substantially reduced in weight.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what 1' claim is 1. in a calculating machine provided with printing mechanism and a figure device, the combination with rotatable disks provided with radial notches of different depth corresponding to the different number of values, and spring controlled devices arranged to 'noans'rc engage the notches in said disks to arrest rotation thereof, substantially as described.

2. In a calculating machine provided with printing mechanism and a ii ure device,-t-he combination with rotatable disks provided with radial notches of different depths and figures or characters of different value adjacent said notches, and spring controlled rods arranged to engage the notches, in said. disks to arrest rotation thereof, substantially as described.

3. In a calculating machine provided. with a figure device, the combination with rotatable disks provided. with radial notches of el. A calculating machine provided'with a' figure device, the combination with rotatable disks provided with radial notches of difi'erent depths corresponding to the numbers of different values, spring c ntrolled rods for engagement with said notches to arrest rotation of said disks, an operating shaft, notched segments on said shaft, one

for each rod, said rods having pins lying in 7 the notches of said segments, means for op erating said shaft to withdraw said rods from engagement with said disks, and link mechanism operated upon movement of said shaft, substantially as and for the purposes set forth.

in testimony whereof I have hereunto set my hand in presence of two subscribing wit nesses.

BERNHARD BEER.

Witnesses PAUL Arms, CLARE SIMON.

fiopileacf this patent he obtained for five cents each, by addressing the Commissioner of Patents,

Washington, f3. 6.

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