ES89249U - Arithmetic calculator (Machine-translation by Google Translate, not legally binding) - Google Patents

Arithmetic calculator (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES89249U
ES89249U ES0089249U ES89249U ES89249U ES 89249 U ES89249 U ES 89249U ES 0089249 U ES0089249 U ES 0089249U ES 89249 U ES89249 U ES 89249U ES 89249 U ES89249 U ES 89249U
Authority
ES
Spain
Prior art keywords
series
disc
figures
appears
disk
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
ES0089249U
Other languages
Spanish (es)
Other versions
ES89249Y (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to ES89249U priority Critical patent/ES89249Y/en
Publication of ES89249U publication Critical patent/ES89249U/en
Application granted granted Critical
Publication of ES89249Y publication Critical patent/ES89249Y/en
Expired legal-status Critical Current

Links

Landscapes

  • Electrically Operated Instructional Devices (AREA)

Abstract

Arithmetic calculator, characterized by consisting of a tablet inside which a disk is contained, parallel to the front and back faces of the disk, apt to be turned in both directions and being fitted by means of a projection corresponding to a central window concentric on the tablet, being represented on one of these faces a succession of figures facing windows arranged in an arc of circumference and that allow to see figures represented in turn on the disk, there is also a peephole for the simultaneous observation of a figure included in another concentric series that appears on the same disc, while on the other side of the tablet it appears with the aforementioned central window in which the disc shows a series of figures that correspond to others of a series that appears in the margin of the same face, existing a peephole for the simultaneous observation of a figure included in a concentric series in the area xterior of the disc, all in order that by relating the figures of one series with those of another, within each of the faces, by systematic rotation of the disc, the result of the arithmetic operation is obtained in the remaining series. (Machine-translation by Google Translate, not legally binding)
ES89249U 1961-09-25 1961-09-25 Arithmetic calculator Expired ES89249Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES89249U ES89249Y (en) 1961-09-25 1961-09-25 Arithmetic calculator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES89249U ES89249Y (en) 1961-09-25 1961-09-25 Arithmetic calculator

Publications (2)

Publication Number Publication Date
ES89249U true ES89249U (en) 1961-11-01
ES89249Y ES89249Y (en) 1962-06-16

Family

ID=52713202

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89249U Expired ES89249Y (en) 1961-09-25 1961-09-25 Arithmetic calculator

Country Status (1)

Country Link
ES (1) ES89249Y (en)

Also Published As

Publication number Publication date
ES89249Y (en) 1962-06-16

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