Editing Continuous track (section)

=== The stiff chain by Hornsby & Sons (1904) ===
At about the same time a British agricultural company, [[Richard Hornsby & Sons|Hornsby]] in [[Grantham]], developed a continuous track which was patented in 1905.<ref>{{cite patent| country	= GB| number	= 190416345| title	= Improvements in or connected with Road Locomotives and Vehicles.| pubdate	= 1 Jun 1905| pridate	= 23 Jul 1904| inventor	= David Roberts| url	= https://worldwide.espacenet.com/patent/search/family/032544550/publication/GB190416345A?q=pn%3DGB190416345A}} {{Webarchive|url=https://web.archive.org/web/20211123121901/https://worldwide.espacenet.com/patent/search/family/032544550/publication/GB190416345A?q=pn%3DGB190416345A |date=23 November 2021 }}</ref> The design differed from modern tracks in that it flexed in only one direction, with the effect that the links locked together to form a solid rail on which the road wheels ran. Hornsby's tracked vehicles were given trials as [[artillery tractor]]s by the [[British Army]] on several occasions between 1905 and 1910, but not adopted.

The Hornsby tractors pioneered a track-steer clutch arrangement, which is the basis of the modern crawler operation.{{citation needed|date=February 2022}} The patent was purchased by Holt.{{citation needed|date=December 2017}}

<gallery>
File:Roberts_tracked_steam_tractor.jpg|upright=1.25|First [[Chain Track]]ed [[Tractor]]<br />(1905, Richard Hornsby & Sons)
File:Hornsby.jpg|upright=1.3|Hornsby Chain Tracked Tractor<br />(1907 enhanced Version)
</gallery>