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Publication numberUS1310961 A
Publication typeGrant
Publication dateJul 22, 1919
Filing dateSep 20, 1918
Publication numberUS 1310961 A, US 1310961A, US-A-1310961, US1310961 A, US1310961A
InventorsCarl T. Osterberg
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Calculating device
US 1310961 A
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Description  (OCR text may contain errors)

- C. T. OSTERBERG. CALCULATING DEVICE. APPLICATION FILED SEPT. 20. 1918.

Patented July 22, 1919.

Iva-aerate? AZ a? Tm: mLuAmm PLANOGRAPH c0., WASHINGTON, D. c

STATES: PATENT OFFIGEI.

cam. nosrnmmne, or m nwanxnnwwrsconsm, ASSIGNOR crown-HALF TOALLIEN HUDSON, or MILWAUKEE, WISCONSIN.

CALCULATING DEVICE.

Specification of Letters Patent.

Patented July 22, 1919.

Application filed September 20, 1918; Serial No. 254,935.

citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Calculating Devices, of which'the following is a description, reference being had to the accompanying drawings, which are apart of this specification.

This invention relates to improvements in calculating devices.

It is one of the objects of the present invention to provide a calculating device of very compact size which may be easily carried in the pocket or in a handbag and is adapted to easily indicate the amount of change to be received in purchasing articles.

A further object of the invention is to provide a calculating device whichis so simple in construction and inexpensive to manufacture as to be particularly adapted for advertising purposes.

A further object of the invention is to provide a calculating device which is of simple construction, is strong and durable and is well adapted for the purpose described.

With the above and other objectsin view, the invention consists of the improved calculating device and the parts and comblna- 'tions as set forth in the claims, and all equivalents thereof.

In. the accompanyingdrawing in which the same-reference characters indicate the same parts in all of the views:

Figure 1 is. a front side view of the improved calculating device;

Fig. 2 is a view of the opposite or rear side thereof;

Fig. 3 is a view similar to Fig. 1 with the front side portion removed;

Fig. 4 is a view similar to Fig. 2 with its rear side portion removed; and

Fig. 5 is a longitudinal sectional view on a larger scale, taken on line55 of Fig. 1.

Referrin to the drawing, the numeral 8 indicates t e improved calculating device which comprises a front plate or sheet of material 9, a rear plate or sheet of material 10 in spaced relation thereto, and interposed overlapped calculating disks 11 and 12.

The lates and disks are preferably formed of ce luloid and are connected together by tubular rivets 18 which serve as journals for the disks 11 and 12.

The peripheral portionsof the disks are serrated or toothed as indicated by the numeral 14; and said peripheral portions project beyond the opposite ends of the plates to permit said the fingers.

The disk 11 on its front side, shown in Fig. 3, has the numerals one to nine and disks to be easily turned by naught delineated thereon in consecutive order clockwise and spaced circumferentially therearound as indicated by the numeral 15. The numerals are spaced a short distance from the periphery of the disk and between said periphery and said numerals and in radial alinement therewith the disk is provided with apertures 16.

An elongated openingaperture 17 formed in the plate 9 medially of and in alinement with the tubular pivots 13 is positioned to permit any one of the numerals and the alined aperture to be turned into register therewith and be visible therethrough.

The disks overlap each other between the tubular rivets and the front face of the disk 12 which is positioned against the rear face of the disk 11 is also provided with a circumferential line of spaced numerals one to nine and naught extending anti-clockwise as indicated by 18 which may be turned to register with one of the apertures 16 when said aperture is in register with the plate opening 17 and be visible through said openings.

The disk 12 is also provided with a circumferential line of apertures 19 which are in radial alinement with the numerals 18 ex cept the naught, and is also provided with a single aperture 20 which is in radial aline-. ment with the naught of the line 18 but is closer-to the periphery of the disk 12 than the line of numerals 18.

The rear or opposite side of the disk 11 has delineated thereon two circumferential lines of numerals 21 and 22 which register respectively with the aperture 19 and the Wlth.' The inner circumferential line of numerals 22 are arranged in successive clockwise order from one to ten while the outer circumferential line of numerals 21 extend in successive clockwise order from one to nine and naught, and while the numerals are in radial alinement with the inner line of numerals, said inner numerals are advanced one number in value over the adjacent outer line numerals 21. V

The rear side of the disk 12 is provided with a circumferential line of numerals 24 circumferential lines of numerals on their oppositesides which may be turned to reg ister with the sight openings, said disks also having circumferential lines of apertures which will register with the plate openings and through which some of the numerals of one disk may be viewed through the apereXtending in spaced successive anticlocktures of the other disk.

wise order from one to nine with one blank dicated in Fig. 2. When thus turned the numerals 43 of the opposite or front sides of the disks will be visible through the opening of the front plate to indicate the.

amount of change to be received from one dollar. If, for instance, the purchase should amount to two dollars and fifty-seven cents and a tender of five dollars be made it would only be necessary to mentally subtract the next highest dollar amount of the purchase Which would be three dollars, from the five, leaving two dollars, and adding the two dollars to the forty-three cents to indicate the correct amount of change to be received.

While for convenience of description the calculating device has been described as having a front side and a rear side, it is to be understood that the sides are only relative in terms, and that the figures of either side can be used to indicate the amount spent,

I and the figures of the opposite side will indicate the amount remaining.

From the foregoing description it will be seen that the calculating device is of very simple construction, and is well adapted for the purpose described.

What I claim as my invention is:

l. A calculating device, comprising a pair of spaced plates having sight opemngs therein, and a pair of overlapped disks journaled between said plates and having circumferential lines of numerals on their opposite sides which may be turned to register with the sight openings, said disks also having circumferential lines of apertures through which some of the numerals of one disk may be viewed through the apertures of the other disk.

2. A calculating device, comprising a pair of spaced plates having sight openings therein, and a pair of overlapped disks journaled between said plates and having 3. A calculating device, comprising a pair of plates having sight openings therein, and a pair of disks journaled between said plates and having overlapped portions between the plate openings, said disks having circumferential lines of numerals on their opposite sides and also having circumferential lines of apertures, said lines of numerals and apertures being arranged to be moved to register with the sight openings of the plates and the disk apertures of one disk to register with some of the numerals of the other disk.

4:. A calculating device, comprising a pair of plates having sight openings therein, and a pair of disks journaled' between said plates and having overlapped portions between the plate openings, said disks having circumferential lines of numerals on their opposite sides and also having circumferential lines of apertures, one of said disks having a plurality of circumferential lines of numerals on one of its sides, said lines of numerals and apertures being arranged to be moved to register with the sight openings of the plates and the disk apertures of one disk to register with some of the nmnerals of the other disk.

5. A calculating device, comprising a pair of plates'having sight openings therein, and a pair of disks journaled between said plates and having overlapped portions between the plate openings, said disks having circumferential hues of numerals .on their opposite sides and also havlng clrcumferential lines of apertures, one of said disks having a plu rality of circumferential lines of numerals on one of its sides, the numbers of one line of said plurality of circumferential lines of numerals being advanced one number in value over the adjacent line of numerals,

portions between the plate openings, each disk having circumferential lines of numerals on its opposite sides and one of the disks having-a plurality of circumferential lines of numerals on one of its sides, each I disk also having circumferential line of apertures arran ed to register with numerals of the other disi, said numerals arranged in consecutive order.

7. A calculating device, comprising a pair of plates having medially positioned sight openings, and a pair of disks journaled between said plates and having overlapped portions between the plate openings, each disk having circumferential lines of numerals on its opposite sides and one of the disks having a plurality of circumferential lines of numerals on one of its sides each disk also having a circumferential line of apertures arranged to register with numerals of the other disk, said numerals arranged in consecutive order, the numerals of one disk extending in anticlockwise direction.

8. A calculating device, comprising a pair of plates having medially positioned sight openings, and a pair of disks journaled between said plates and having overlapped portions between the plate openings, each disk having circumferential lines of numerals on 1ts opposite sides and one of the disks having a plurality of circumferential lines of numerals on one of its sides, each disk also having a circumferential line of apertures arranged to register with numerals of the other disk, one of the disks having an aperture which is offset from the circumferential lines of apertures, said numerals arranged in consecutive order.

9. A calculating device, comprising a pair Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

of plates having medially positioned sight openings, and a pair of disks journaled between said plates and having overlapped portions between the plate openings, each disk having circumferential lines of numerals on its opposite sides and one of the disks having a plurality of circumferential lines of numerals on one of its sides, each disk also having a circumferential line of apertures arranged to register with numerals of the other disk, one of the disks having an aperture which is oifsetfrom the circumferential lines of apertures and also having a numeral which is offset from one of the circumferential lines of numerals, said numerals arranged in consecutive order.

10. A calculating device, comprising a pair of plates having medially positioned sight openings, and a pair of disks journaled between said plates and having overlapped portions between the plate openings, said disks having serrated peripheries which project beyond the opposite ends of the plates, each disk having circumferential lines of numerals on its opposite sides and one of the disks having a plurality of circumferential lines of numerals on one of its sides, each disk also having a circumferential line of apertures arranged to register with numerals of the other disks, said numerals arranged in consecutive order.

In testimony whereof, I aflix my signature.

CARL T. OSTERBERG.

Washington, D. G. I

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4280291 *Nov 15, 1979Jul 28, 1981Maynes Alan DTwo-sided portable scoreboard
US8246051 *Jan 22, 2009Aug 21, 2012Kelly Heyward NygaardElectronic tennis scoring display
Classifications
U.S. Classification235/113
Cooperative ClassificationA63B71/0672