US1220008A - Computing-machine. - Google Patents

Description

C. SGHALLER.

COMPUTING MACHINE.

APPLlCATION FILED NOV. 15. 1915.

1,220,008. Patented M01220, 917

UNITED STATES PATENT OFFICE.

CARL SCHALLER, 0F BRUNSWICK GERMANY, ASSIGNOR TO GRII IME, NA'IFALIS & (10.,

GGMMANDITGESELLSCHAFT AU)? ACTIEN,

TION OF GERMANY.

or eeenswrox, GERMANY, A coupons CGlViIUTINGr-MACHINE.

Specification of Letters Patent Patented Mar. 26, 1917.

Q '0 all :0 hem it may cmwern lie it known that 1 {Linn bvenixmuu, worlm'uister, a. citizen of the Duchy of Brunswick, lill'l'ipli'e of (lei-many, residing at Brunswick, Germany, have invented certain new and useful Improveuuuits in ComputiugMachines, of which the following; a specification.

My invention relates to computing or calculating machines. The object of my invention and the means by which I attain the ohject, will he more readily understood hy reference to the ilcfifllnijmllylilfi drawing in which i have illustrated. in a sectional side elevation, a machine oi? the type to which my invention is particularly applicahie.

The illustrated computing.machinc is of teh type in which numbers and items "en he set up by means of disks 0 revolubly mounted upon the shaft Z? and provided with the tongue-like handles 11. The disks 6 l we cam grooves Z into which project ateral extensions m of the teeth a which are slidahly carried in disks (5 fixedly mounted upon the shaft 7:. When the handle i of any disk 6 is moved a certain extent a corresponding number of teeth at will he caused. to move radially outward so es to project from. the circumference of the disk a which is associ ated with the disk 0 thus operated When the main operating crank 0 is turned, the teeth it prm'iously set up will then transmit to the counting mechanism 9 through tic intermediate wheel 32, a movement corresponding in its extent to the nun'ihers of teeth it moved outward and projecting from the disk at. lVIechines of this type are frequently furnished with an indicating mechanism or i'em registei." g on which the set up nuniihers and items appear 'isibie to the eye, the numbers and items being trans- :t'erred to the indicating mechanism from the cam disks (2 through intermediute wheels it.

in machines of this type, the 110088 't of disconnecting the indicating mec A oregister after the numbers and n up by means oi the handles 2' and 'g'lreyionsly to the starting oi the main operating lever 0, ii an alteration in the numher set up in the register is to he prevented, constitutes e drawhecli'.

It is the object of my invention to over come this drawback by providing a device in which the actuating means for the indicating register is of such a charecter that during the rotation the setting-up wheel (6 ett'ected hy the movement of operating handle, no action'is exerted upon said register so that the number set up therein remains unchanged.

For this purpose the scttinpyup wheel a which carries the slidnble teeth in but is stationary while the teeth areheine; set up, is provided with an actuatingmember c, d, which receives its motion from the cam disk 0 and transmits the received mot on to the register either directly or through an intermediate operating member, as shown in the construction illustrated. As a result of this arrangement, the actuating member 0, (Z, performs an actuating movement only when the SChtlIiQ-UD wheel on which said netuating member is l.eV0lli.l3l mounted, is stationary and the cam dis; e is moving; relatively thereto; but the actuating memher 6*, ch does not transmit any motion to the indicator 9' when the setting-up wheel a and the cam disk c which otherwise produees the actuating movement, are both revolving simultaneously andin the same direction.

in the construction illustrated, the setting-up wheel a carrying the adjijistalole teeth 11., is provided with a pivot 71 on which the actuating member is rotstahly mounted, this actuating member being here shown as comprising a star wheel 0, having rigidly connected thereto, a toothed gear wheel a? which meshes with the internal gear teeth; of the cam disk 6. The disposition of the star wheel is such that the same advances the intermediate wheel it operating the indicating mechanism or register 9 when the cam disk 6 is rotating the star wheel 6 by means of the curved rack formed by" end the p nion cl. But this Q; I tation of the star wheel will tame place when the setting-up wheel a is stir onery,

and the cam-disk c is rotating; relatively thereto. The teeth of the star wheel 0 are always out of engagement with the teeth oi the intermediate wheel h when the cam disk is in the position corresponding to zero or to any other of those figures or digits that can be set up by means of the cam disk er From this it follows-that tee

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