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Timmis was an innovative design of double coiled springs, originally used for railway rolling stock, such as on the
Barsi Light Railway Barsi Light Railway (BLR) was a long, narrow-gauge railway between Miraj and Latur in the state of Maharashtra in India. It was the brainchild of British engineer Everard Calthrop, and regarded as having revolutionised narrow-gauge railw ...
c1889, as formulated by
Everard Calthrop Everard Richard Calthrop (3 March 1857 – 30 March 1927) was a British railway engineer and inventor. Calthrop was a notable promoter and builder of narrow-gauge railways, especially of narrow gauge, and was especially prominent in India. His ...
(1857–1927).


Inventor

The inventor was Illius Augustus Timmis


Patent

US Patent 432341 was filled in 1889 and published in 1890.


See also

* Bogie as used with railway rolling stock. *
Coil spring A selection of conical coil springs The most common type of spring is the coil spring, which is made out of a long piece of metal that is wound around itself. Coil springs were in use in Roman times, evidence of this can be found in bronze Fi ...
*
Leaf spring A leaf spring is a simple form of spring commonly used for the suspension in wheeled vehicles. Originally called a ''laminated'' or ''carriage spring'', and sometimes referred to as a semi-elliptical spring, elliptical spring, or cart spring, i ...
- an older and simpler system of springs


References

1890 introductions Automotive suspension technologies English inventions Springs (mechanical) {{rail-transport-stub