spring balance

spring balance
Weighing device that uses the relation between the applied load and the deformation of a spring.

This relationship is usually linear; that is, if the load is doubled, the deformation is doubled. Spring balances are widely used commercially. Those with high load capacities are frequently suspended from crane hooks and are known as crane scales.

* * *

▪ measurement instrument
 weighing device that utilizes the relation between the applied load and the deformation of a spring. This relationship is usually linear; i.e., if the load is doubled, the deformation is doubled. In the circular balance shown in the figure—>, the upper ends of the helical springs are attached to the casing and the lower ends to a crossbar that can move relative to the casing and to which the load hook is attached. The pinion to which the indicating pointer is attached is pivoted in the casing and meshes with the rack, which is pivotally connected to the crossbar and is pressed into contact with the pinion by the rack spring.

      When a load is applied, the springs are stretched, and movement of the crossbar with the rack attached rotates the pinion and the load-indicating pointer. The dial is graduated in scale units that depend on the stiffness of the springs: the stiffer springs have larger scale units and higher load capacity.

      Spring balances are widely used commercially. Those with high-load capacities are frequently suspended from crane hooks and are known as crane scales. Smaller units for household use are called fish scales.

* * *


Universalium. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • Spring balance — Spring Spring, n. [AS. spring a fountain, a leap. See {Spring}, v. i.] 1. A leap; a bound; a jump. [1913 Webster] The prisoner, with a spring, from prison broke. Dryden. [1913 Webster] 2. A flying back; the resilience of a body recovering its… …   The Collaborative International Dictionary of English

  • spring balance — noun a balance that measure weight by the tension on a helical spring • Syn: ↑spring scale • Hypernyms: ↑balance * * * noun see balance I * * * spring balance or (esp N American) spring scale …   Useful english dictionary

  • spring balance — spyruoklinės svarstyklės statusas T sritis Standartizacija ir metrologija apibrėžtis Svarstyklės su spiraline plokščia arba cilindrine spyruokle, kurią deformuoja svėrinys. Rodmenys skaitomi skalėje, kuria slenka su spyruokle sujungta rodyklė.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • spring balance — spyruoklinės svarstyklės statusas T sritis fizika atitikmenys: angl. spring balance vok. Federwaage, f; Federzugwaage, f; Zugwaage, f rus. пружинные весы pranc. balance à ressort, f …   Fizikos terminų žodynas

  • spring balance — balance on which one hangs an item for weighing and the weight is determined by the degree of stretching of the balance …   English contemporary dictionary

  • spring balance — /ˈsprɪŋ bæləns/ (say spring baluhns) noun a balance in which weight is determined by the extent to which a coiled spring is extended …  

  • spring balance — noun a balance that measures weight by the tension of a spring …   English new terms dictionary

  • spring balance — An instrument for measuring weight or force which does so by the elasticity of a spiral spring …   Dictionary of automotive terms

  • Spring — Spring, n. [AS. spring a fountain, a leap. See {Spring}, v. i.] 1. A leap; a bound; a jump. [1913 Webster] The prisoner, with a spring, from prison broke. Dryden. [1913 Webster] 2. A flying back; the resilience of a body recovering its former… …   The Collaborative International Dictionary of English

  • Spring back — Spring Spring, n. [AS. spring a fountain, a leap. See {Spring}, v. i.] 1. A leap; a bound; a jump. [1913 Webster] The prisoner, with a spring, from prison broke. Dryden. [1913 Webster] 2. A flying back; the resilience of a body recovering its… …   The Collaborative International Dictionary of English

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”