Editing Continuous track (section)

=== Holt and the Caterpillar ===

The name ''Caterpillar'' came from a soldier during the tests on the Hornsby crawler, "trials began at [[Aldershot Garrison|Aldershot]] in July 1907. The soldiers immediately christened the 70bhp No.2 machine the 'caterpillar'."<ref>''The Devil's Chariots'', John Glanfield</ref>
Holt adopted that name for his "crawler" tractors. Holt began moving from steam to gasoline-powered designs, and in 1908 brought out the {{convert|40|hp|adj=on}} "Holt Model 40 Caterpillar". Holt incorporated the Holt Caterpillar Company, in early 1910, later that year trademarked the name "Caterpillar" for his continuous tracks.<ref name=acmoc2>
{{cite web
 | title= About Caterpillar
 | publisher= Antique Caterpillar Machinery Owners Club
 | url= https://www.acmoc.org/about-caterpillar?showall=&start=2
 | access-date= 2016-11-07
 | url-status= live
 | archive-url= https://web.archive.org/web/20160322134708/http://www.acmoc.org/about-caterpillar?showall=&start=2
 | archive-date= 2016-03-22
}}
</ref>

[[Caterpillar Tractor Company]] began in 1925 from a merger of the [[Holt Manufacturing Company]] and the [[C. L. Best|C. L. Best Tractor Company]], an early successful manufacturer of crawler tractors.

With the [[Caterpillar D10]] in 1977, Caterpillar resurrected a design by Holt and Best, the high-sprocket-drive, since known as the "[[Caterpillar D10#High Drive system|High Drive]]",<ref name="Caterpillar high drive">{{cite book
 |url=https://books.google.com/books?id=oyX4X1B_hLsC&q=D+10+high+drive&pg=PA17 |title=Giant Earthmovers: An Illustrated History |publisher=MotorBooks International |access-date=2015-08-16 |last=Haddock |first=Keith |pages=17, 20, 21 |isbn=9781610605861 |url-status=live |archive-url=https://web.archive.org/web/20151007222123/https://books.google.com/books?id=oyX4X1B_hLsC&pg=PA17&lpg=PA17&dq=D+10+high+drive&source=bl&ots=_O7PGqTlgv&sig=6sMMK6y8_qlRPpZDIUH_yhFNXgQ&hl=en&sa=X&ved=0CEQQ6AEwBmoVChMI35fdobutxwIVhUiSCh0TowAH#v=onepage&q=D%2010%20high%20drive&f=false |archive-date=2015-10-07 }}</ref> which had the advantage of keeping the main drive shaft away from ground shocks and dirt,<ref>The Earthmover Encyclopedia, Page 28, Keith Haddock</ref>
and is still used in their larger dozers.

<gallery heights="180px" mode="packed">
File:Cat45-mojave.jpg|Two [[Holt tractor|Holt 45]] gasoline crawler tractors teamed up to pull a long wagon train in the [[Mojave Desert]] during construction of the [[Los Angeles Aqueduct]] in 1909.
File:Rear-D9-0002.jpg|[[Caterpillar D9]] [[Caterpillar D10#High Drive system|High Drive]]. The elevated drive sprocket offers advantages to large earth-moving machines.<ref>{{cite web|url=https://www.equipmentjournal.com/construction-news/cats-elevated-sprocket-that-changed-the-dozer/|title=Cat's elevated sprocket that changed the dozer market|work=Equipment Journal|date=2017-09-17|access-date=2019-04-16|archive-date=2021-05-18|archive-url=https://web.archive.org/web/20210518051949/https://www.equipmentjournal.com/construction-news/cats-elevated-sprocket-that-changed-the-dozer/|url-status=live}}</ref>
</gallery>