GB695362A - An instrument for the testing for accuracy of weighbridges and other weighing instruments of high capacity - Google Patents

An instrument for the testing for accuracy of weighbridges and other weighing instruments of high capacity

Info

Publication number
GB695362A
GB695362A GB3071449A GB3071449A GB695362A GB 695362 A GB695362 A GB 695362A GB 3071449 A GB3071449 A GB 3071449A GB 3071449 A GB3071449 A GB 3071449A GB 695362 A GB695362 A GB 695362A
Authority
GB
United Kingdom
Prior art keywords
carrier
lever
weight
equilibrium
testing
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
GB3071449A
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
Priority to GB3071449A priority Critical patent/GB695362A/en
Publication of GB695362A publication Critical patent/GB695362A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G23/00Auxiliary devices for weighing apparatus
    • G01G23/01Testing or calibrating of weighing apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

695,362. Testing weighing apparatus. BURTON, P. Nov. 29, 1950 [Nov. 30, 1949]. No. 30714/49. Class 143. An instrument for testing the accuracy of weighing instruments of high capacity, e.g., weighbridges, comprises a fulcrummed lever, one end of which is coupled, during testing, to the long arm of a steelyard under test or, if a self indicating scale is under test, to a subsidiary lever thereof, and a weight carrier which is supported by said lever between said one end and the lever fulcrum; and is characterized in that the carrier is movable along the lever so that the movement of a unit weight supported thereby can be adjusted to balance a heavier unit weight supported by the weighing instrument whereafter, when additional unit weights are placed on the carrier, the movements of the load counterbalancing means of the weighing instrument necessary to return the weighing instrument to equilibrium should correspond with unit increments of load indicated by said weighing instrument. The instrument shown in the Figure operates as follows: With the lever A coupled to the long arm of a steelyard M by link O, carrier I in its extreme position of adjustment on the left hand end of the lever and a detachable weight G exactly counterbalancing said carrier, a heavy load, e.g. a lorry, is moved onto the weighbridge and the steelyard counterpoise is adjusted to return the system to equilibrium. Since the lever is itself in equilibrium it plays no part in counterbalancing the load. The detachable weight G is now removed, an additional load of one ton is applied to the weighbridge and the carrier I is moved by a screw K to a new position on the lever in which it again restores equilibrium in the system, thus the additional load is exactly counterbalanced by the carrier assembly and subsequent, incremental additions of weights-each of the same weight as the carrier assembly-can then be counterbalanced by incremental subtractions, in one ton steps, of the counterbalancing force exerted by the steelyard counterpoise to check its accuracy. In a modification described in the Provisional Specification only the detachable weight G is replaced by a weight equal to the carrier assembly and mounted on a reverse threaded screwed extension of screw K so that the carrier is counterbalanced in all positions of adjustment. With this arrangement assuming the parts to be in equilibrium with the heavy load on the weighbridge, a one ton weight is applied to the weighbridge, a one unit weight is applied to the carrier and the system is again brought into equilibrium by movement of the carrier; the testing operation is then carried out as before. The use of both these instruments is also described in connection with the testing of self indicating scales.
GB3071449A 1949-11-30 1949-11-30 An instrument for the testing for accuracy of weighbridges and other weighing instruments of high capacity Expired GB695362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3071449A GB695362A (en) 1949-11-30 1949-11-30 An instrument for the testing for accuracy of weighbridges and other weighing instruments of high capacity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3071449A GB695362A (en) 1949-11-30 1949-11-30 An instrument for the testing for accuracy of weighbridges and other weighing instruments of high capacity

Publications (1)

Publication Number Publication Date
GB695362A true GB695362A (en) 1953-08-12

Family

ID=10311988

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3071449A Expired GB695362A (en) 1949-11-30 1949-11-30 An instrument for the testing for accuracy of weighbridges and other weighing instruments of high capacity

Country Status (1)

Country Link
GB (1) GB695362A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279949B (en) * 1964-02-28 1968-10-10 Johannes Lambertus Franciscus Test balance for an automatic weighing device
CN102322934A (en) * 2011-08-02 2012-01-18 浙江工业大学 Loader weighing device with various calibration modes
CN108151862A (en) * 2018-02-11 2018-06-12 苏州市计量测试研究所 A kind of counterweight for electronic crane scale detection device loads zero balance device
CN113790830A (en) * 2021-09-27 2021-12-14 上海市计量测试技术研究院 Lever type force measuring device with human body scale calibration function
CN115655440A (en) * 2022-12-08 2023-01-31 潍坊市建筑工程质量检测有限公司 Precision detection equipment for weighing laboratory instruments

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279949B (en) * 1964-02-28 1968-10-10 Johannes Lambertus Franciscus Test balance for an automatic weighing device
CN102322934A (en) * 2011-08-02 2012-01-18 浙江工业大学 Loader weighing device with various calibration modes
CN108151862A (en) * 2018-02-11 2018-06-12 苏州市计量测试研究所 A kind of counterweight for electronic crane scale detection device loads zero balance device
CN113790830A (en) * 2021-09-27 2021-12-14 上海市计量测试技术研究院 Lever type force measuring device with human body scale calibration function
CN115655440A (en) * 2022-12-08 2023-01-31 潍坊市建筑工程质量检测有限公司 Precision detection equipment for weighing laboratory instruments

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