GB417841A - Calculating device - Google Patents
Calculating deviceInfo
- Publication number
- GB417841A GB417841A GB1585334A GB1585334A GB417841A GB 417841 A GB417841 A GB 417841A GB 1585334 A GB1585334 A GB 1585334A GB 1585334 A GB1585334 A GB 1585334A GB 417841 A GB417841 A GB 417841A
- Authority
- GB
- United Kingdom
- Prior art keywords
- members
- scale
- slide
- scales
- slidable
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G1/00—Hand manipulated computing devices
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
417,841. Calculating-apparatus. WELLINGTON, B. R., 17, 1st Street, Troy, New York, U.S.A. May 28, 1934, No. 15853. [Class 106 (i).] A device for use in solving arithmetical, algebraic, and trigonometrical problems comprises a frame 1, Fig. 1, of triangular form with attachable scale bearing members 2, 3 arranged at right angles and jointed at the angle, a slide 20 adjustable along the scale member 3 carrying a protractor and a pivoted hypotenuse scale bar 25, and a diagonal scale member 34 slidable through undercut grooves at the corner of the scale members 2, 3 and provided with limbs 36, 37 at right angles for cooperation with lugs 18, 19 on slidable scales 14, 15 on the members 2, 3. The members 1, 2 and 3 are held together by spring clips 7, Fig. 3, and are formed with tongued and grooved edges and the slide 20 is formed to slide on a track formed in the frame 1 and member 2. The scales on the members 2, 3, and 25 are equal and uniform, while the scale on the diagonal member 34 represents the squares of the numbers of the scales 11, 12. Modified forms of the mounting of the members and of the slide are described. Examples of the use of the device are set forth in the Specification. A curved track 65 mounted on the member 1 and engaging a pin on a slide 40 on the bar 25 may be provided for use in solving quadratic equations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1585334A GB417841A (en) | 1934-05-28 | 1934-05-28 | Calculating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1585334A GB417841A (en) | 1934-05-28 | 1934-05-28 | Calculating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB417841A true GB417841A (en) | 1934-10-12 |
Family
ID=10066698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1585334A Expired GB417841A (en) | 1934-05-28 | 1934-05-28 | Calculating device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB417841A (en) |
-
1934
- 1934-05-28 GB GB1585334A patent/GB417841A/en not_active Expired
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