Ohio-Built Farm Machinery: Huber, Silver King, Leader, Centaur and General

Today, Art’s collection includes more than 80 tractors, most of them Silver Kings and most still in their work clothes. He likes Silver Kings because they are more widely recognized and easy to transport to shows. He has at least one tractor for every year Silver Kings were produced (even when the assembly operation was relocated to West Virginia). He shows the tractors often, most frequently in Ohio and Florida.

The 10-20 Plymouth tractor was introduced in 1934. Powered by a Hercules Model 1XA 4-cylinder engine, it had a 4-speed transmission with a top speed of 25 mph. The name Plymouth was prominently cast vertically on the radiator nose.

Art has two 1934 Plymouth/Silver King tractors. One was once used as a grounds tractor at The Ohio State University. The other was produced just after FRH sold the Plymouth name to Chrysler Corp. Although still a Plymouth, it also carries the Silver King nameplate on the nose of the radiator grille.

Silver King introduced an unusual 3-wheeled tractor in 1936. The new model was sold as a cultivating and general purpose farm tractor. Art says three rear-end gear ratios were offered: low ratio for general farm work, medium ratio for combination hard work and speed, and a high ratio used primarily for highway mowing tractors. These tractors reportedly traveled at highway speeds approaching 30 mph. The first 1,000 produced had cast iron frames; later models used steel plate frames along each side of the engine.

FRH was small enough to build tractors farmers wanted. Because the company could modify each tractor as needed, it claimed each was “custom made.” So many models were produced that it’s hard to keep track of them. Of the 3-wheel version, the 38 became the 380; the 44 became the 440. The 445 was another standard tread tractor. Tricycle tractors fell into the 340, 345, 600, 660 and 720 series.

From 1934 to 1954, FRH produced 8,600 tractors. The tractor line was then sold to Mountain States Fabricating Co., Clarksburg, W.Va. Production was discontinued at the Plymouth plant in 1953 and moved to Clarksburg, where tractors were produced from 1955 to 1957.

Art’s collection of Centaurs includes farm and industrial tractors from the company’s beginning (the G-2 2-wheeled garden tractor) to the latest effort (the KV, or Klear View), and even features pieces from the company’s TracAir portable air compressor line.

The Central Tractor Co., Greenwich, started the Centaur name. The company’s first tractor was produced in 1921 as a 10 hp Centaur garden tractor. In 1928, the company name changed to Centaur Tractor Corp. Its next tractor, powered by a 4-cylinder LeRoi engine, was a standard tread machine intended primarily for use in truck gardens, family gardens and orchards.

In 1934, Centaur introduced the KV line. These tractors were powered by 4-cylinder LeRoi engines and rated at 22 belt hp. By 1939, the tractor was styled, but remained essentially the same as the unstyled version.

LeRoi bought the company in 1940 but retained the Centaur name and continued to produce the KV tractor. LeRoi then added a portable air compressor line. The TracAir unit combined a 4-cylinder engine with a 2-cylinder air compressor mounted in a single block using a single crankshaft.

Farm tractor production was suspended during World War II. After the war, TracAir production resumed. The TracAir was used as a mobile air compressor power unit for air tools, such as jackhammers and tools used in road repair and construction. LeRoi eventually was absorbed into Westinghouse Air Brake Co.

Meanwhile, manufacturer B.F. Avery developed its own Tru-Draft design for mounted implements intended to go head to head with the Ford/Ferguson package, but Avery had no tractor manufacturing facility. Avery opened talks with Cleveland Tractor Co., and the outcome was the General GG tractor, built from 1939 to 1942. The General used a Hercules IXA-3 engine with 3- by 4-inch bore and stroke (displacement of 113 cubic inches).

The tractor was sold by Avery and Cletrac. From about 1940 to 1942, Cleveland Tractor Co. also built the same tractor for Montgomery Ward & Co., which sold it as the Twin Row. The only difference between the General and the Twin Row was color: The General was orange and the Twin Row was red.

B.F. Avery purchased Cleveland Tractor Co. in 1942. In 1951, B.F. Avery merged with Minneapolis-Moline. With the merger of Minneapolis-Moline and White Motor Co., the Cleveland company ended.

Leader Tractor Mfg. Co. was owned and operated by members of the Brockway family. Walter Brockway was the designer. Other principals included his father, Lewis; his brother, Harold; and his wife, Hazel. Leader tractors remained in production into the 1950s.

Huber produced its first tractor in 1898. The tractor featured the same Van Duzen engine used in the 1892 Froelich tractor. Huber bought the Van Duzen Co. in 1897, thus guaranteeing engine ownership rights. Using the Van Duzen engine mounted on a steam traction engine chassis with its own transmission and drive train, Huber produced 30 units, none of which survived.

Huber was one of the first manufacturers to mass produce a tractor for commercial use. However, the tractor itself was less than a full success, and production was suspended until 1911.

From 1911 to 1917, Huber built a prairie tractor, a 30-60 (later re-rated to 35-70), an opposed cylinder 15-30 and a 4-cylinder 20-40. In 1917 came the cross-motor 12-25; in 1921 the company brought out its larger 15-30 (upgraded in 1925 to an 18-36) and a 20-40. By 1926, Huber had developed a new line of tractors using a uni-frame design powered by Stearns 4-cylinder engines. That tractor also came in three sizes: 18-36 (21-39), 20-40 (32-45) and 25-50 (40-62). Design again changed in 1929 when Huber brought out the 20-36 (later to become the HS and HK tractors).

For the 1930 crop year, Huber developed the Modern Farmer, a cultivating tractor. A tricycle tractor similar to the Farmall Regular, it was later named Model SC or LC depending on which Waukesha engine was used. It was also available in standard tread, the Model S/L. In 1936, Huber produced its only styled tractor, the Model B. Built from 1936 to 1942, the unit became the platform for the Huber tractor grader (later known as the Huber Maintainer). Models HS, HK, L, LC and B remained in production until World War II, when the war effort diverted manufacturing output. Huber farm tractors never went back into production.

Art likes to share his collection. For many years, he’s taken his show on the road, displaying tractors at several shows each season. Recently he’s cut back on travel. Now he’s content to go to a few shows, exhibit when the mood strikes and show his collection to folks who just want to take a look. FC