GB190718218A - Improved Slide Rule. - Google Patents

Improved Slide Rule.

Info

Publication number
GB190718218A
GB190718218A GB190718218DA GB190718218A GB 190718218 A GB190718218 A GB 190718218A GB 190718218D A GB190718218D A GB 190718218DA GB 190718218 A GB190718218 A GB 190718218A
Authority
GB
United Kingdom
Prior art keywords
logarithms
scales
slide
unity
inches
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
Application number
Inventor
Seinen Yokota
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
Application granted granted Critical
Publication of GB190718218A publication Critical patent/GB190718218A/en
Expired legal-status Critical Current

Links

Landscapes

  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • Drawing Aids And Blackboards (AREA)

Abstract

18,218. Yokota, S. Aug. 12. Slide rules.-Upon the stationary portion of the rule there are scales of distance in centimetres, A, of logarithms of numbers greater than unity, E, and less than unity, F, each arranged in three rows, and of logarithms of numbers and squares respectively upon the edges adjacent to similar scales D, C on the slide. Centrally placed upon the slide is a scale of the logarithms of cubes G, and upon the reverse thereof are logarithmic scales of sines, secants, and tangents. These scales are all constructed to a standard length of ten inches, and there is accordingly added, on one of the side surfaces of the stationary portion, a length scale ten inches in extent, against which a cursor can be moved so as to facilitate the ascertaining of logarithms by inspection.
GB190718218D 1907-08-12 1907-08-12 Improved Slide Rule. Expired GB190718218A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190718218T 1907-08-12

Publications (1)

Publication Number Publication Date
GB190718218A true GB190718218A (en) 1907-12-12

Family

ID=32435910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190718218D Expired GB190718218A (en) 1907-08-12 1907-08-12 Improved Slide Rule.

Country Status (1)

Country Link
GB (1) GB190718218A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422649A (en) * 1944-10-17 1947-06-17 Keuffel & Esser Co Slide rule
US3733470A (en) * 1971-06-21 1973-05-15 Iprofil Tennolemn Slide rule of general use of pocket size
WO2009006674A1 (en) * 2007-07-10 2009-01-15 Henricus Antonius Kemps Map distance calculator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422649A (en) * 1944-10-17 1947-06-17 Keuffel & Esser Co Slide rule
US3733470A (en) * 1971-06-21 1973-05-15 Iprofil Tennolemn Slide rule of general use of pocket size
WO2009006674A1 (en) * 2007-07-10 2009-01-15 Henricus Antonius Kemps Map distance calculator

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