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Historical Construction Equipment Association


Scope and Contents

Biographical Note

Administrative Information

Detailed Description

Photographic records

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Historical Construction Equipment Association | Historical Construction Equipment Association

By Thomas Berry

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Collection Overview

Title: Historical Construction Equipment AssociationAdd to your cart.View associated digital content.

ID: 7/701/60

Primary Creator: Heltzel Steel Form & Iron Company – Helco Company

Arrangement: Group 1, Machinery Records, is arranged by record format, record type, subseries, machine class, machine model, and publication date (where known).

Subjects: American Fire Apparatus, Fire truck, Galion Iron Works, McCormick-Deering, Motor grader conversion, Wheel tractor

Forms of Material: Digital image

Scope and Contents of the Materials

This collection consists of sales literature discussing the company’s products, and a Construction Equipment Hall of Fame nomination form for John Nicholas Heltzel.

Biographical Note

Company History:

The Heltzel Steel Form & Iron Company (Collection 417) of Warren, Ohio, originally manufactured steel concrete forms. It developed the Flex-Plane form-riding concrete finisher in 1923 and organized The Flexible Road Joint Machine Company, also in Warren, in 1925 as an associate company to produce the machines. Subsequent literature uses the Flex-Plane trade name, and the Flexible Road Joint name disappeared from sales literature. Flexible Road Joint’s sales literature in the 1930s made extensive use of testimonial letters; its further history is unknown, but it was probably merged into Heltzel. Heltzel itself became Helco Company prior to 1999. It evidently ceased operations by October 2009. (Another Helco Company, whose name is an acronym for Hellenic Composites, began production of industrial and military products in Athens and Komotini, Greece, in 1997).

Company founder John Nicholas Heltzel was elected to the Construction Equipment Hall of Fame in 1999.

Product Information:

Heltzel used the following trade names for its products:

• Detroit Special – form-riding concrete finishers.

• Flex-Joint – form-riding concrete pavement finishers.

• Flex-Plane – form-riding concrete pavement finishers and floats.

Serial number nomenclature:

Through 1961, Heltzel used either an alpha or numeric date prefix. The numeric prefix consisted of the last two digits of the year of manufacture. Another year-prefix system was used from 1970 through 1979 when the concrete finisher line was discontinued.

Subject/Index Terms

American Fire Apparatus
Fire truck
Galion Iron Works
Motor grader conversion
Wheel tractor

Administrative Information

Repository: Historical Construction Equipment Association

Use Restrictions: Use of photographs by parties other than the HCEA requires our approval.

Acquisition Method: Records were found in files or created by HCEA employees or volunteers.

Box and Folder Listing

Browse by Group:

[Group 1: Photographic records, 2009],

Group 1: Photographic records, 2009Add to your cart.View associated digital content.
Series 1: Images from HCEA Digital Camera, 2009Add to your cart.
Subseries 4: Miscellaneous, 2009Add to your cart.

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