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530:, and do other earth-moving jobs, these tractors were equipped with a large, thick, metal plate in front. (The blade got its curved shape later). In some early models, the driver sat on top in the open without a cabin. The three main types of bulldozer blades are a U-blade for pushing and carrying soil relatively long distances, a straight blade for "knocking down" and spreading piles of soil, and a brush
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38:
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Some forces' engineer doctrines differentiate between a low-mobility armoured dozer (LMAD) and a high-mobility armoured dozer (HMAD). The LMAD is dependent on a flatbed to move it to its employment site, whereas the HMAD has a more robust engine and drive system designed to give it road mobility with
537:
Widespread acceptance of the bull-grader does not seem to appear before the mid-1930s. The addition of power down-force provided by hydraulic cylinders instead of just the weight of the blade made them the preferred excavation machine for large and small contractors alike by the 1940s, by which time
1358:
The noun bulldozer is first recorded in 1876, in the plural, in the sense of
Southern members or supporters of the Democratic Party who colluded to disenfranchise African-American voters; after the American Civil War (1861-65), the 15th Amendment to the Constitution, ratified on 3rd February 1870,
758:
These appeared as early as 1929, but were known as "bull grader" blades, and the term "bulldozer blade" did not appear to come into widespread use until the mid-1930s. "Bulldozer" now refers to the whole machine, not just the attachment. In contemporary usage, "bulldozer" is sometimes shortened to
459:
In recent years, innovations in the construction technology have made remote-controlled bulldozers a reality. Now, heavy machinery can be controlled from up to 1,000 feet away. This contributes to the safety of workers on the jobsite, keeping them at a secure distance from potentially dangerous
647:, for precise grade control and (potentially) "stakeless" construction. As a response to the many, and often varying claims about these systems, the Kellogg Report published in 2010 a detailed comparison of all the manufacturers' systems, evaluating more than 200 features for dozers alone.
728:
By the late 1870s, "to bulldoze" and "bulldozing" were being used throughout the United States to describe intimidation "by violent and unlawful means", which sometimes meant a severe whipping or coercion, or other intimidation, such as at gunpoint. It had a particular meaning in the
463:
The advancement and the ability to control the heavy machinery from afar provides workers with the sufficient control over the dozers to get the job done. Though these machines are still in their early stages, many construction companies are using them successfully.
318:
A ripper is a long, claw-like shank that may be mounted singly or in multiples on the rear of a bulldozer to loosen hard and impacted materials. Usually a single shank is preferred for heavy ripping. The ripper is equipped with a replaceable
1359:
granted Afro-American men the right to vote ... The bulldozers, also known as regulators, used threats and acts of violence in order to prevent Afro-American voters from casting their ballots for candidates of the
Republican Party.
620:
cylinders or electric motors instead of early models' cable winch/brake, and automatic grade control. Hydraulic cylinders enabled the application of down force, more precise manipulation of the blade, and automated controls.
793:
706:
was the largest producer of bulldozers, making over 10,000 units that year or two in five crawler-type dozers made in the world. The next-largest producer by number of units is
Caterpillar Inc., which produced 6,400 units.
833:
431:
to cease their sale of bulldozers to the IDF. The use of bulldozers was seen as necessary by
Israeli authorities to uproot smuggling tunnels, destroy houses used by Palestinian gunmen, and expand the buffer zone.
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515:, where the two built the first bulldozer. On December 18, 1923, Cummings and McLeod filed U.S. patent #1,522,378 that was later issued on January 6, 1925, for an "Attachment for Tractors."
110:
designed for carrying rather than pushing material. The term originally referred only to the blade attachment but is now commonly applied to any crawler tractor with a front mounted blade.
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751:
Late 19th century: "Bulldozing" meant using brute force to push over or through any obstacle, with reference to two bulls pushing against each other's heads in a fight over dominance.
674:
are present-day competitors. Although these machines began as modified farm tractors, they became the mainstay for big civil construction projects, and found their way into use by
534:
for removing brush and roots. These attachments (home-built or built by small equipment manufacturers of attachments for wheeled and crawler tractors and trucks) appeared by 1929.
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Around 1870s: In the USA, a "bulldose" was a large dose (namely, one large enough to be literally or figuratively effective against a bull) of any sort of medicine or punishment.
805:
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Some bulldozers have been fitted with armor by civilian operators to prevent bystanders or police from interfering with the work performed by the bulldozer, as in the case of
244:
Blades can be fitted straight across the frame, or at an angle. All can be lifted, some, with additional hydraulic cylinders, can be tilted to vary the angle up to one side.
106:
The word "bulldozer" refers only to a motorized unit fitted with a blade designed for pushing. The word is sometimes used inaccurately for other heavy equipment such as a
436:
a moderate range and speed. HMADs, however, normally lack the full cross-country mobility characteristics of a dozer blade-equipped tank or armoured personnel carrier.
153:. The tracks give them excellent traction and mobility through very rough terrain. Wide tracks also help distribute the vehicle's weight over a large area (decreasing
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farm tractors that were used to plough fields. The versatility of tractors in soft ground for logging and road building contributed to the development of the armored
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423:. This use drew criticism against both the use and the suppliers of armoured bulldozers from human-rights organizations such as the EWASH-coalition and
407:, for earth moving, clearing terrain obstacles, opening routes, and detonating explosive charges. The IDF used armoured bulldozers extensively during
222:
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Komatsu introduced the D575A in 1981, the D757A-2 in 1991, and the D575A-3 in 2002, which the company touts as the biggest bulldozer in the world.
511:
In 1923, farmer James
Cummings and draftsman J. Earl McLeod made the first designs for the bulldozer. A replica is on display at the city park in
240:
combination ("S-U", or semi-U), shorter, with less curvature and smaller side wings. It is typically used for pushing large rocks, as at a quarry.
628:, in at least one case a remote cut-off village running out of food was supplied by a bulldozer towing a big sled carrying necessary supplies.
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1072:"Israel's violations of human rights regarding water and sanitation in the OPT - Report by Al-Haq and EWASH to CESCR - Non-Un document"
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to protect the driver from firearms and debris, enabling bulldozers to operate in combat zones. The most widely documented use is the
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A variant is the all-wheel-drive wheeled bulldozer, which generally has four large rubber-tired wheels, hydraulically operated
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instead of a manual transmission, such as the early Euclid C-6 and TC-12 or Model C Tournadozer, blade movement controlled by
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hardpan) in agricultural and construction applications but break shaly rock or pavement into easily handled small rubble.
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Over the years, bulldozers got bigger and more powerful in response to the demand for equipment suited for ever larger
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Bulldozers grew more sophisticated as time passed. Improvements include drivetrains analogous to (in automobiles) an
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451:, who outfitted his Komatsu D355A bulldozer with homemade composite armor to then demolish government buildings.
339:
A variant of the ripper is the stumpbuster, a single spike protruding horizontally used to split a tree stump.
1453:
542:
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1250:
Dictionary of
Americanisms: A Glossary of Words and Phrases, Usually Regarded as Peculiar to the United States
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and destroy residential neighbourhoods, water wells and pipes, and agricultural land to expand the military
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ground. Extra-wide tracks are known as swamp tracks or low ground pressure (lgp) tracks. Bulldozers have
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Patent 1522378, Attachment For
Tractors, John E McLeod and James D Cummings, Filed December 18, 1923.
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259:, was the first design to enable this to be done economically, removing the soil from an area being
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Sometimes, a bulldozer is used to push or pull another piece of earth-moving equipment known as a "
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straight ("S blade"), short with no lateral curve or side wings. Can be used for fine grading.
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or land leveler - an earth moving machine that is pulled behind a tractor rather than pushed.
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286:, to clear battlefield obstacles and prepare firing positions. Dozer blades may be mounted on
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The
Kellogg Report LLC (2010). Article: The Kellogg Report. Retrieved December 15, 2010 from
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buildings. This has also been done by civilians with a dispute with the authorities, such as
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267:. Dozer blades with a reinforced center section for pushing are known as "bull blades".
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universal ("U blade"), tall and very curved, with large side wings to maximize load.
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Kansas
Curiosities: Quirky Characters, Roadside Oddities & Other Offbeat Stuff
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Bulldozers are used heavily in large and small scale construction, road building,
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the term "bulldozer" referred to the entire machine and not just the attachment.
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Mobile machine which uses a frontal blade to push large volumes of material
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961:"The Essential Guide to Stump-Related Attachments for Heavy Machinery"
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designed to take advantage of the track system and provide excellent
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to clear antitank obstacles or mines, and dig improvised shelters.
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factories, and in military applications in both peace and wartime.
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is designed to transport rather than push or rough-grade material
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By the 1920s, tracked vehicles became common, particularly the
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for the 'bulldozer shrimp' (from the way it pushes sand about)
759:"dozer", and the verb "bulldozing" to "dozing", thus making a
632:
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A more recent innovation is the outfitting of bulldozers with
527:
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The bulldozer's primary tools are the blade and the ripper:
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522:. Rubber-tired vehicles came into use in the 1940s. To dig
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Industry statistics based on 2010 production published by
226:
Komatsu bulldozer pushing up to 7 m with semi-U tilt dozer
719:
A 19th-century term used in engineering for a horizontal
359:
Further information on the small airborne bulldozer:
1207:"Shantui officially largest dozer producer in the world"
678:
construction units worldwide. The best-known model, the
1016:"Razing Rafah: Mass Home Demolitions in the Gaza Strip"
601:
manufactured large, tracked-type earthmoving machines.
1306:"What in the Word?! The racist roots of 'bulldozer'"
1047:"Israel: Caterpillar Should Suspend Bulldozer Sales"
650:The best-known maker of bulldozers is Caterpillar.
484:tractors team up to pull a long wagon train in the
84:are also produced. Its most popular accessory is a
1343:"Original Meaning of 'bulldozer': A Racist Bully"
314:N bulldozer equipped with a single-shank ripper
1373:"In a Word: The Racist Origins of 'Bulldozer'"
1253:. Little, Brown, and Company. pp. 76–77.
41:A large bulldozer with multi-tine ripper, the
1228:"The Worlds biggest Dozer Rolls Off The Line"
1201:
1199:
609:manufactured large, rubber-tired bulldozers.
146:Typically, bulldozers are large and powerful
8:
80:, though specialized models riding on large
332:Ripping can not only loosen soil (such as
176:These traits allow bulldozers to excel in
1166:"Euclid-General Motors' Crawler Tractor"
744:1886: "Bulldozer" meant a large-caliber
739:1876 United States presidential election
135:
119:
927:
843:bulldozer still operational in 2012 on
774:
737:to suppress black voter turnout in the
626:winter of 1946–47 in the United Kingdom
496:The first bulldozers were adapted from
827:Caterpillar D8 bulldozer without a cab
733:as a whipping or other punishment for
274:and other military equipment, such as
251:" to increase productivity. The towed
230:Bulldozer blades come in three types:
157:), thus preventing it from sinking in
140:The same bulldozer's multishank ripper
1211:The Earthmover & Civil Contractor
859:Zettelmeyer ZD 3001 wheeled bulldozer
72:, sand, snow, rubble, or rock during
7:
1371:Hollandbeck, Andy (8 October 2020).
1341:Tréguer, Pascal (19 February 2018).
1010:
1008:
1006:
799:Bulldozer for solid waste management
635:technology, such as manufactured by
68:to the front for pushing material:
1168:. PEI Tractor Club. Archived from
815:tank fitted with dozer blade, 2020
76:work. It travels most commonly on
25:
1414:Old engine Bulldozer pages photos
1419:When Bulldozers roamed the earth
903:, largest bulldozer manufactured
879:
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1247:Bartlett, John Russell (1877).
411:where they were used to uproot
263:and depositing where needed as
128:bulldozer with a straight blade
1021:. October 2004. Archived from
748:and the person who wielded it.
1:
754:1930s: applied to the vehicle
1401:The mechanism of a bulldozer
1126:. Rowman & Littlefield.
787:N with a double shank ripper
763:with the pre-existing verb "
413:Gaza Strip smuggling tunnels
1120:Grout, Pam (15 June 2010).
639:Positioning Systems, Inc.,
488:during construction of the
427:, the latter of whom urged
272:combat engineering vehicles
85:
1480:
1280:"History of the Bulldozer"
1213:. May 2011. Archived from
937:Armoured Fighting Vehicles
369:
358:
270:Dozer blades are added to
65:
32:Bulldozer (disambiguation)
29:
935:Trewhitt, Philip (1999).
682:, was also used to clear
1096:"Profile: Rachel Corrie"
986:"Profile: Rachel Corrie"
455:Remote-controlled dozers
393:combat-engineering roles
391:Bulldozers employed for
60:) is a large, motorized
1316:Oxford University Press
599:International Harvester
1439:Construction equipment
1237:- Retrieved 2016-02-26
731:Southern United States
614:automatic transmission
493:
395:are often fitted with
388:
384:bulldozer used by the
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329:tip, known as a boot.
315:
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255:, invented in 1883 by
227:
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64:equipped with a metal
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1377:Saturday Evening Post
1076:Question of Palestine
965:www.boomandbucket.com
841:First Tractor Company
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1449:Engineering vehicles
901:Acco super bulldozer
700:Off-Highway Research
490:Los Angeles Aqueduct
201:articulated steering
167:transmission systems
30:For other uses, see
1464:American inventions
1311:Oxford Dictionaries
714:History of the word
513:Morrowville, Kansas
1406:2005-07-25 at the
1233:2015-12-30 at the
1051:Human Rights Watch
690:enemy structures.
624:In the very snowy
555:Clark Equipment Co
494:
425:Human Rights Watch
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382:IDF Caterpillar D9
366:Armored bulldozers
357:
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276:artillery tractors
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1192:kelloggreport.com
735:African Americans
443:or demolition of
421:Philadelphi Route
409:Operation Rainbow
372:Armored bulldozer
302:Multishank ripper
288:main battle tanks
78:continuous tracks
16:(Redirected from
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1164:Haddock, Keith.
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545:. Firms such as
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108:front-end loader
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641:Trimble Inc
607:Caterpillar
547:Caterpillar
506:World War I
429:Caterpillar
417:buffer zone
380:An armored
114:Description
1444:Demolition
1434:Bulldozers
1428:Categories
1326:21 October
1290:2008-12-17
1260:1346051569
1139:2012-04-01
1106:2021-07-22
1081:2021-07-22
1057:2021-07-22
1032:2021-07-22
996:2021-07-22
970:3 February
922:References
887:John Deere
872:Skid-steer
672:John Deere
587:John Deere
583:Fiat-Allis
543:earthworks
419:along the
284:M8 tractor
18:Bulldozers
889:bulldozer
874:bulldozer
761:homophone
618:hydraulic
445:condemned
361:Clark CA1
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50:bulldozer
1404:Archived
1382:13 March
1352:13 March
1231:Archived
1100:BBC News
990:BBC News
895:See also
811:British
688:demolish
676:military
656:Liebherr
571:Liebherr
492:in 1909.
343:Variants
321:tungsten
190:forestry
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771:Gallery
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702:showed
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575:LiuGong
551:Komatsu
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468:History
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280:Type 73
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148:tracked
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670:, and
637:Topcon
563:Euclid
524:canals
460:jobs.
334:podzol
294:Ripper
186:mining
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668:Volvo
643:, or
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397:armor
327:alloy
324:steel
210:Blade
163:muddy
159:sandy
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1328:2018
1255:ISBN
1178:2011
1128:ISBN
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