GB560183A - Improvements in slide rules - Google Patents

Improvements in slide rules

Info

Publication number
GB560183A
GB560183A GB1335042A GB1335042A GB560183A GB 560183 A GB560183 A GB 560183A GB 1335042 A GB1335042 A GB 1335042A GB 1335042 A GB1335042 A GB 1335042A GB 560183 A GB560183 A GB 560183A
Authority
GB
United Kingdom
Prior art keywords
scale
flow
injection rate
rate scale
index mark
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
GB1335042A
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.)
BERTEL FRISELL
Wallace and Tiernan Ltd
Original Assignee
BERTEL FRISELL
Wallace and Tiernan Ltd
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 BERTEL FRISELL, Wallace and Tiernan Ltd filed Critical BERTEL FRISELL
Priority to GB1335042A priority Critical patent/GB560183A/en
Publication of GB560183A publication Critical patent/GB560183A/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)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

560,183. Calculating - apparatus. BLACKMORE, D. W., FRISELL, B., and WALLACE & TIERNAN, Ltd. Sept. 22, 1942, No. 13350. [Class 106 (i)] A slide rule for calculations relating to the addition of chlorine or other chemical reagent to water or other fluids has a treatment rate scale and an injection rate scale on one part and a water flow scale and index on the other part. The treatment rate scale a on the stock A represents the number of parts of the reagent to be added per million parts of the fluid and the injection rate scale b is expressed in gallons or pounds to be added per time unit. On the slide B opposite the treatment rate scale is arranged the flow scale c in gallons per hour' and opposite the injection rate scale is an index mark C shown as an arrow projecting from a rectangle. A fourth scale d representing a range of solution concentrations is provided on the slide to co-operate with the injection rate scale when graduated in gallons per unit time. Additional scales e, f and an index mark SC are provided to co-operate with the scale d for use in calculating the amount of reagent necessary to form a solution of a desired strength from a concentrate of known strength. Calcutations relating to the rate of flow can be effected by the provision of scales g, h and i representing capacity in gallons, pipe diameter and length respectively together with an index mark C. A time scale j may be provided for use in determining the time required for a unit of fluid to flow through a given length of pipe. An index mark V may be provided to co-operate with the injection rate scale b for determining the velocity of flow through the pipe.
GB1335042A 1942-09-22 1942-09-22 Improvements in slide rules Expired GB560183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1335042A GB560183A (en) 1942-09-22 1942-09-22 Improvements in slide rules

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1335042A GB560183A (en) 1942-09-22 1942-09-22 Improvements in slide rules

Publications (1)

Publication Number Publication Date
GB560183A true GB560183A (en) 1944-03-23

Family

ID=10021353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1335042A Expired GB560183A (en) 1942-09-22 1942-09-22 Improvements in slide rules

Country Status (1)

Country Link
GB (1) GB560183A (en)

Similar Documents

Publication Publication Date Title
FR2373833A1 (en) CALCULATOR PROVIDING THE RESPECTIVE LEVELS OF TWO FLUIDS CIRCULATING IN AN OLEODUCT OR OTHER DUCT
GB560183A (en) Improvements in slide rules
FR979112A (en) Automatic, high-capacity charger for instrument reservoirs using liquid or viscous fluid bodies
GB553640A (en) Improvements in or relating to fluid pressure or fluid flow indicators
GB535432A (en) Improvements relating to liquid meters
GB655367A (en) Improvements in and relating to apparatus responsive to variations in the rate of flow of fluids
FR748247A (en) Measuring and indicator crew displacement regulation system for fluid flow measuring device
GB479075A (en) A speed indicator
Bonilla Direct Solution of Isothermal Flow in Long Pipes
GB549163A (en) Improvements in or relating to meters for measuring the flow of liquids
Landmann et al. Collaborative Studies on Methods for Nitrate and Nitrite in Meat
Zweighaft Oxygen Lavage of the Pleural Space: A Note on Technique
SU1886A1 (en) Slide rule for calculating water and sewer pipes
Stevens Closure to “Flow Through Circular Weirs”
GB430970A (en) Improvements in or relating to means for measuring the flow of liquids
GB428299A (en) Improvements in means for indicating the flow of liquids
Oesper Niels Bjerrum
GB337487A (en) An improved logarithmic calculator of the cylindrical type
GB740913A (en) Improvements in or relating to liquid flow indicators
GB857017A (en) Sight glass fluids and sight glasses containing them
FR977724A (en) Automatically variable volume tank with the amount of liquid it contains
GB554365A (en) Improvements in apparatus for mixing fluids in flow in proportionate quantities
GB808821A (en) Improvements in or relating to sight glasses
ES4643U (en) A dosing tap (Machine-translation by Google Translate, not legally binding)
LINDERSTRÃ et al. Principle of the Cartesian Diver applied to Gasometric Technique