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Private company

Blaw-Knox

Manufacturer of road paving equipment

Blaw-Knox is a manufacturer of road paving equipment. The company was created in 1917 from the merger of Blaw Collapsible Steel Centering Company and the Knox Pressed and Welded Steel Company. Blaw-Knox was sold to new owners in 1968, changed owners a few times thereafter, and continues as the Volvo Blaw-Knox brand of paving equipment, sold to Volvo Construction Equipment since 2007.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1917Founded1

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Blaw Knox paver
Photo: High Contrast, CC BY 3.0 de, via Wikimedia Commons4

Blaw-Knox is a manufacturer of road paving equipment. The company was created in 1917 from the merger of Blaw Collapsible Steel Centering Company and the Knox Pressed and Welded Steel Company. Blaw-Knox was sold to new owners in 1968, changed owners a few times thereafter, and continues as the Volvo Blaw-Knox brand of paving equipment, sold to Volvo Construction Equipment since 2007. Since July 2020 it is owned by Gencor Industries Inc.2

Corporate structure

Blaw-Knox is part of a group headed by GENCOR INDUSTRIES INC. 7 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

  • GENCOR INDUSTRIES INC Orlando, Florida
    • Blaw-Knox
    • Bituma Corporation Subsidiary · Washington, United States
    • Bituma-Stor, Inc. Subsidiary · Iowa, United States
    • Equipment Services Group, Inc. Subsidiary · Florida, United States
    • Gencor Energy Corp. Subsidiary · Florida, United States
    • General Combustion Corporation Subsidiary · Florida, United States

Built from subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

The story

In 1906, Jacob B. Blaw created the Blaw Collapsible Steel Centering Company, located in New Jersey, to manufacturer his patented steel form used to construct improved concrete circular tubes for sewers and tunnels. In 1909, Luther Knox created the Knox Pressed and Welded Steel Company to manufacture steel products used in high temperature applications. In July 1917, the firms merged to form the Blaw-Knox Company.

Blaw-Knox added the construction of radio towers to its operation in 1927, and soon developed the distinctive diamond-shaped Blaw-Knox Tower design of vertical, medium wave radio towers. Several are now listed on the US National Register of Historic Places.

In 1929, Blaw-Knox purchased the A. W. French & Company paving equipment company, which manufactured machines that produced concrete roads, a natural extension of the Blaw-Knox expertise in concrete and steel works.

From Wikipedia’s article on Blaw-Knox, shared under CC BY-SA 4.0.3

Timeline

  1. 1917Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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