GB916110A - Improvements in and relating to scales - Google Patents

Improvements in and relating to scales

Info

Publication number
GB916110A
GB916110A GB2029361A GB2029361A GB916110A GB 916110 A GB916110 A GB 916110A GB 2029361 A GB2029361 A GB 2029361A GB 2029361 A GB2029361 A GB 2029361A GB 916110 A GB916110 A GB 916110A
Authority
GB
United Kingdom
Prior art keywords
strings
load
signals
difference
june
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
GB2029361A
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
Publication of GB916110A publication Critical patent/GB916110A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/16—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of frequency of oscillations of the body

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

916,110. Digital weighing apparatus. WIRTH, W. June 5, 1961 [June 14, 1960], No. 20293/61. Class 40 (1). Weighing apparatus comprises a rigid body 4, suspended on two strings 1, 2, on which the points of application of the load 6 and an adjustable weight P are arranged. The strings are electrically maintained in vibration and means is provided for calculating the expression where Ti is the difference in periods (T 1 - T 2 ) of the strings, # is the ratio of the lengths of the strings and p is the ratio in which the strings are loaded by weight P. The Specification shows that the above expression, which is derived from the general equation of motion of the system, can, by suitable choice of parameters be made linearly dependent on the load. In the embodiment shown, unit 11 forms the difference frequency between signals from strings 1, 2, counter 12 counts a predetermined number of these difference signals and at the same time counts the corresponding number of signals from string 2. With the apparatus unloaded the latter number is arranged to be 1000, and when the apparatus is loaded the excess over 1000 is proportional to the load. An alternative method of calculating the above expression is illustrated in Fig. 2 (not shown). The rigid body 4 may be a beam or a flat plate.
GB2029361A 1960-06-14 1961-06-05 Improvements in and relating to scales Expired GB916110A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH674760 1960-06-14

Publications (1)

Publication Number Publication Date
GB916110A true GB916110A (en) 1963-01-23

Family

ID=4314387

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2029361A Expired GB916110A (en) 1960-06-14 1961-06-05 Improvements in and relating to scales

Country Status (1)

Country Link
GB (1) GB916110A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324962A (en) * 1964-02-14 1967-06-13 Fairbanks Morse & Co Force measuring system with electronic balancing and readout network
DE1279379B (en) * 1964-11-27 1968-10-03 Wirth Gallo & Co Electronic mass and force meter
US3519093A (en) * 1967-12-05 1970-07-07 Campbell Soup Co Apparatus and method for sensing mass,and high-speed weighing apparatus and method utilizing same
DE1766781B1 (en) * 1968-01-08 1971-08-05 Sauter Kg August PROCESS FOR DIGITAL SQUARING THE QUOTIENT FROM AN UNKNOWN MEASURING FREQUENCY OF AN ELECTRIC VOLTAGE AND A CONSTANT PRESELECTED VALUE OF A BASIC FREQUENCY AND DEVICE FOR PERFORMING THE PROCEDURE
US3612198A (en) * 1968-01-26 1971-10-12 Wirth Gallo & Co Electrical mass meter
US3692128A (en) * 1967-09-25 1972-09-19 Gallo Wirth & Co Electrical mass meter
US4147224A (en) * 1976-05-20 1979-04-03 Plessey Handel Und Investments Ag Bathroom scales

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324962A (en) * 1964-02-14 1967-06-13 Fairbanks Morse & Co Force measuring system with electronic balancing and readout network
DE1279379B (en) * 1964-11-27 1968-10-03 Wirth Gallo & Co Electronic mass and force meter
US3692128A (en) * 1967-09-25 1972-09-19 Gallo Wirth & Co Electrical mass meter
US3519093A (en) * 1967-12-05 1970-07-07 Campbell Soup Co Apparatus and method for sensing mass,and high-speed weighing apparatus and method utilizing same
DE1766781B1 (en) * 1968-01-08 1971-08-05 Sauter Kg August PROCESS FOR DIGITAL SQUARING THE QUOTIENT FROM AN UNKNOWN MEASURING FREQUENCY OF AN ELECTRIC VOLTAGE AND A CONSTANT PRESELECTED VALUE OF A BASIC FREQUENCY AND DEVICE FOR PERFORMING THE PROCEDURE
US3612198A (en) * 1968-01-26 1971-10-12 Wirth Gallo & Co Electrical mass meter
DE1774725B1 (en) * 1968-01-26 1974-04-18 Wirth Gallo & Co Electric mass meter
US4147224A (en) * 1976-05-20 1979-04-03 Plessey Handel Und Investments Ag Bathroom scales

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