FR537186A - Slide rule for gears - Google Patents

Slide rule for gears

Info

Publication number
FR537186A
FR537186A FR537186DA FR537186A FR 537186 A FR537186 A FR 537186A FR 537186D A FR537186D A FR 537186DA FR 537186 A FR537186 A FR 537186A
Authority
FR
France
Prior art keywords
gears
slide rule
rule
slide
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
Other languages
French (fr)
Inventor
Marcel Crusellar
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 filed Critical
Application granted granted Critical
Publication of FR537186A publication Critical patent/FR537186A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
    • G06G1/10—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation
    • G06G1/12—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation logarithmic graduations, e.g. for multiplication

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
FR537186D 1921-06-20 1921-06-20 Slide rule for gears Expired FR537186A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR537186T 1921-06-20

Publications (1)

Publication Number Publication Date
FR537186A true FR537186A (en) 1922-05-17

Family

ID=8927317

Family Applications (1)

Application Number Title Priority Date Filing Date
FR537186D Expired FR537186A (en) 1921-06-20 1921-06-20 Slide rule for gears

Country Status (1)

Country Link
FR (1) FR537186A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2541858A (en) * 1947-09-26 1951-02-13 Paul F Boehm Cursor with lock
US2706081A (en) * 1952-07-02 1955-04-12 Warren P Hunnicutt Building cost slide rule

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2541858A (en) * 1947-09-26 1951-02-13 Paul F Boehm Cursor with lock
US2706081A (en) * 1952-07-02 1955-04-12 Warren P Hunnicutt Building cost slide rule

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