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In 1910, Diplock abandoned the
Pedrail Wheel and began developing what he called the Chaintrack, in which fixed wheels ran on a moving belt, very like the caterpillar track as it is now understood. It was a complicated and high-maintenance system, and in 1914 Diplock eventually produced a version on
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A device intended to replace the wheel of a self-propelled vehicle for use on rough roads and to approximate to the smoothness in running of a wheel on a metal track. The tread consists of a number of rubber shod feet which are connected by ball-and-socket joints to the ends of sliding spokes. Each
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They were essentially long, narrow and very strong steel frameworks carrying the engines, and borne upon eight pairs of big pedrail wheels, each about ten feet in diameter, each a driving wheel and set upon long axles free to swivel round a common axis. This arrangement gave them the maximum of
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in
December 1903, described the use of large, armoured cross-country vehicles, armed with automatic rifles and moving on pedrail wheels, to break through a system of fortified trenches, disrupting the defence and clearing the way for an infantry advance:
63:) connected to pivots on a wheel. As the wheel travels, pressure exerted by springs within it increases the number of feet in contact with the ground, thus reducing ground pressure and allowing the wheel to negotiate obstacles and uneven ground.
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spoke has attached to it a small roller which in its turn runs under a short pivoted rail controlled by a powerful set of springs. This arrangement permits the feet to accommodate themselves to obstacles even such as steps or stairs.
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adaptability to the contours of the ground. They crawled level along the ground with one foot high upon a hillock and another deep in a depression, and they could hold themselves erect and steady sideways upon even a steep hillside.
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a simpler, single wide track. With a body fitted, the machine could carry a ton of cargo and be pulled with minimal effort by a horse. It demonstrated the attributes of the caterpillar track: low friction and low ground pressure.
165:, whose "ped-rail" notion, the notion of a wheel that was something more than a wheel, a wheel that would take locomotives up hill-sides and across ploughed fields, was public property nearly twenty years ago
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178:. Diplock's version of an endless track was not designed until some ten years after the publication of Wells' story. The pedrail wheel played no part in the design of
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Although Wells describes the pedrail wheels in detail, a number of authors have mistakenly taken his description to be of some form of
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is a type of all-terrain wheel developed in the late 19th and early 20th century by
Londoner
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Men, ideas, and tanks: British
Military Thought and Armoured Forces, 1903–1939
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210:, War, Armed Forces and Society, vol. 1, Manchester University Press,
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17:
258:
The Devil's
Chariots: The Birth and Secret Battles of the First Tanks
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The idea was suggested to me by the contrivances of a certain Mr.
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Type of all terrain wheel, replaced by caterpillar treads
43:An advanced design pedrail wheel climbing stairs.
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119:land vessels, equipped with pedrail wheels.
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225:Wells, Herbert George (30 June 2008) ,
87:Webster's Revised Unabridged Dictionary
73:Webster's Revised Unabridged Dictionary
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55:. It consists of a series of "feet" (
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1:
312:, Zeitcom, §4, archived from
306:Wells, HG (December 1903),
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29:
256:Glanfield, John (2006),
30:Not to be confused with
343:Wells, HG (June 2004),
250:, Shepperton: Ian Allan
248:British Tanks 1915–1945
180:the first British tanks
89:, C&G Merriam, 1913
381:Diplock's 1914 patent.
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71:According to the 1913
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370:Diplock's 1910 patent
126:, in his short story
105:1904 illustration of
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53:Bramah Joseph Diplock
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292:The Free dictionary
201:Harris, JP (1995),
135:The Strand Magazine
408:British inventions
403:English inventions
349:, pp. 71–93,
346:War and the Future
309:The Land Ironclads
246:White, BT (1963),
228:War and the Future
155:War and the Future
129:The Land Ironclads
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112:The Land Ironclads
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238:978-0-497-97078-9
176:caterpillar track
32:Dreadnaught wheel
16:(Redirected from
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289:"Pedrail",
124:H. G. Wells
107:H. G. Wells
392:Categories
329:, p.
327:Wells 2008
276:References
208:(hardback)
186:Chaintrack
67:Definition
168:—
147:—
117:ironclad
83:—
163:Diplock
97:Fiction
18:Pedrail
398:Wheels
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61:Latin
57:pedes
351:ISBN
262:ISBN
233:ISBN
212:ISBN
47:The
153:In
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