Elater
Elater (gen. elatēris m.) est artificium ad energiam potentialem condendam aptum. In spira plerumque consistit, aut lamina cuiuslibet metalli quae seu comprimitur, seu flexitur, seu tenditur. Cum solvitur, ad formam primam rediens energiam mechanicam liberat. Multa artificia et machinae (puta horologia) elateribus impelluntur.

Notae 

 Lex Hookiana

Bibliographia 
 Parmley, Robert. 2000. "Section 16: Springs." In Illustrated Sourcebook of Mechanical Components. Novi Eboraci: McGraw Hill. ISBN 0070486174.
 Sclater, Neil. 2011. "Spring and screw devices and mechanisms." In Mechanisms and Mechanical Devices Sourcebook. Ed. 5a, pp. 279–99. Novi Eboraci: McGraw Hill. ISBN 9780071704427.

Nexus externi 

Paredes, Manuel. 2013. "How to design springs." ''Insa de toulouse.
Silberstein, Dave. 2002. "How to make springs." Bazillion. Archivum.
Wright, Douglas. 2005. "Springs." Ex "Notes on Design and Analysis of Machine Elements." Department of Mechanical & Material Engineering, University of Western Australia.
 spring manufacturing machine

Instrumenta