Before Hydraulics: The First Bulldozer Blade Ever Built (1923)

Описание: Before Hydraulics: The First Bulldozer Blade Ever Built (1923)

In 1923, two Kansas farmers bolted oak planks, a windmill spring, and Model T Ford parts to a Fordson tractor and backfilled over a mile of pipeline trench in a single day. Ten times faster than horses. They filed patent number 1,522,378. But almost every history of the bulldozer cites the wrong patent number. One inventor got 68 patents and a Presidential award. The other sold his share for $500 and vanished for 62 years.

This documentary traces the full story of the bulldozer blade: the Teapot Dome scandal pipeline that triggered the invention, the three-day junkyard build in Morrowville, Kansas, the three-way corporate war between LaPlant-Choate, LeTourneau, and Caterpillar, the disturbing 1876 racist origins of the word "bulldozer" itself, and the WWII combat kills that turned a ditch-filling attachment into a weapon of war.

Caterpillar refused to build a single blade for 20 years. Every Cat bulldozer on every job site in America wore a blade made by two small companies. Then in 1944, Caterpillar cut both suppliers off, started making its own, and watched one get swallowed by Allis-Chalmers and the other sell everything to Westinghouse for $31 million.

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⏱️ TIMESTAMPS
0:00 - The word "bulldozer" has nothing to do with bulls
1:17 - Before the blade: blood, horses, and dirt
2:00 - The Fresno scraper and steam shovels
3:37 - No machine on earth could push dirt forward
4:14 - The Panama Canal's 10% death rate
4:42 - Why crawler tractors were backwards-facing tools
6:28 - The Teapot Dome scandal pipeline (1923)
7:17 - The backfilling method: 500 feet per day with horses
7:57 - James Cummings and John Earl McLeod
8:43 - The three-day junkyard build
9:09 - Patent 1,522,378 and why every history gets it wrong
10:23 - They saw it as a ditch filler, not a weapon of war
11:06 - The $500 betrayal between co-inventors
12:12 - McLeod vanished for 62 years
12:55 - The Morrowville replica in Cummings Park
13:00 - LaPlant-Choate puts the blade on a crawler tractor
14:03 - Wheeled Fordson vs. track-laying crawler
14:35 - Operating the knuckle busters by hand
15:09 - The crude blade: no angle, no tilt
16:28 - LeTourneau invents the Power Control Unit (1928)
16:54 - Cable snap: the deadliest hazard of the era
17:35 - Hydraulic vs. cable controls: two parallel technologies
18:16 - Caterpillar refused to build a blade for 20 years
19:33 - 1944: Caterpillar pulls the plug on its suppliers
20:30 - LaPlant-Choate swallowed by Allis-Chalmers (1952)
20:58 - LeTourneau sells to Westinghouse for $31 million
21:44 - Carrimors vs. Carryalls: the naming rivalry
22:07 - The racist origin of the word "bulldozer" (1876)
23:30 - From vigilante to firearm to earthmover
24:13 - The bulldozer blade goes to war
25:06 - Aurelio Tassone and the D8 named "Helen" (1943)
26:03 - The blade as improvised armor
26:51 - Seabee ingenuity: beer cans, tinfoil, and fuel drums
27:28 - Nine days from beach landing to fighter airstrip
27:55 - B-29 runways and the atomic bomb missions
28:04 - Hobart's Funnies and the D-Day decision
28:40 - The Rome Plow in Vietnam: 750,000 acres cleared
29:38 - Operation Desert Storm: the Bulldozer Assault
30:44 - Legacy: from oak planks to a $60 billion industry

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📚 Sources & Further Reading:
US Patent 1,522,378A — "Attachment for Tractors" (McLeod & Cummings, 1925) — patents.google.com
Texas State Historical Association — James Dell Cummings biography — tshaonline.org
Farm Show Magazine — "Replica of World's First Bulldozer Was Built in Kansas" — farmshow.com
Contractor Magazine NZ — LaPlant-Choate company history — contractormag.co.nz
OEM Off-Highway / HCEA — "The Earliest Bulldozers" — oemoffhighway.com
Noema Magazine — "The Shrouded, Sinister History of the Bulldozer" — noemamag.com
The Saturday Evening Post — "The Racist Origins of 'Bulldozer'" — saturdayeveningpost.com
We Are The Mighty — "This sailor used a bulldozer to earn the Silver Star" — wearethemighty.com
Military.com — "The Bulldozer Assault of Desert Storm" — military.com
Historical Construction Equipment Association (HCEA) archives

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© Fair Use Notice: This video may contain copyrighted material. Such material is made available for educational and documentary purposes. This constitutes fair use under Section 107 of the U.S. Copyright Act (17 U.S.C. § 107). All footage, images, and clips belong to their respective copyright holders.

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