The Colonial Iron Works Co. Trade Mark Plaque
SSC MUSEUM COLLECTION
Catalog No. SSC-CIW-PLQ-TM-001
Oval Industrial Identification Plaque | Conveyor Systems | Cleveland, Ohio
Late 19th–Early 20th Century • The Colonial Iron Works Co.
Front view of the oval cast iron trade mark plaque. “THE COLONIAL IRON WORKS CO.” arches around the upper perimeter, “CLEVELAND OHIO” around the lower. The center depicts a raised anvil and hammer—the universal symbol of the iron trade—flanked by “TRADE MARK” and “CONVEYOR SYSTEMS.” Two mounting holes at top and bottom center indicate this plaque was bolted to a piece of industrial equipment.
This oval cast iron plaque is the kind of artifact that makes industrial archaeology worth doing. It is not cookware. It is not a domestic household object. It is an identification plate—a trade mark sign—cast by The Colonial Iron Works Company of Cleveland, Ohio, and bolted to a piece of industrial conveyor equipment that this now-vanished firm manufactured at some point between the late 19th and early 20th centuries. The plaque survived because someone had the foresight to remove it from the equipment before the machinery was scrapped. The company behind it has left so little trace in the historical record that even systematic searches of foundry databases, patent archives, Cleveland industrial directories, and collector reference sources return virtually nothing. The Colonial Iron Works Co. is, in the most literal sense, a forgotten foundry.
For SSC, this plaque represents something beyond a single object. It is the cornerstone of what will become the “Cleveland’s Forgotten Foundries” thematic grouping within the collection—a dedicated effort to document the small and mid-sized iron works that operated in Cleveland, Ohio, during the city’s industrial golden age and that have since disappeared from the historical record almost entirely. Cleveland was one of the great iron cities of the American industrial era, home to dozens of foundries and iron works that served the railroad, manufacturing, construction, and agricultural sectors. The major firms—Cleveland Rolling Mill, American Steel and Wire, Corrigan-McKinney—are well documented. But the smaller operations—the Colonial Iron Works, the Madison Foundry Company, the Superior Foundry, the Cleveland Foundry Company—left behind only the iron they made. Documenting what survives is the work that SSC is undertaking.
The plaque itself is a beautifully executed piece of foundry work. The oval form is cleanly cast with sharp edges. The lettering is raised in bold relief, fully legible, and evenly spaced around the perimeter. The center composition—an anvil with a crossed hammer, the words “TRADE MARK” above and “CONVEYOR SYSTEMS” below—is rendered with the precision and care that a company would reserve for its corporate identity mark. This was not a utilitarian label stamped out carelessly. This was the face the Colonial Iron Works presented to its customers, bolted to every conveyor system that left the Cleveland plant. The quality of the casting reflects pride in the product and in the firm’s identity.
Piece Details
Reverse view showing the plain flat back with two mounting holes at top and bottom center. The smooth back with no additional markings, serial numbers, or patent dates suggests this was a standard trade mark plaque used across the company’s product line rather than a piece-specific identification plate.
Manufacturer
The Colonial Iron Works Co.
Piece Type
Industrial identification plaque / trade mark sign
Shape
Oval
Material
Cast iron
Front Marking
“THE COLONIAL IRON WORKS CO.” arched around upper perimeter; “CLEVELAND OHIO” arched around lower perimeter; center depicts anvil and hammer with “TRADE MARK” and “CONVEYOR SYSTEMS”
Back
Plain flat reverse with two mounting holes (top and bottom center)
Date of Manufacture
Unknown — style and construction suggest late 19th to early 20th century
Place of Manufacture
Cleveland, Cuyahoga County, Ohio
Condition
Very Good — all lettering and imagery fully legible; raised relief sharp and well-defined; no cracks or structural damage; some surface patina and wear consistent with age; mounting holes intact
Acquisition Date
February 10, 2026
Acquisition Source
eBay — Seller: group8
eBay Item Number
306680033635
Order Number
26-14198-35772
Purchase Price
$29.99 item + $8.00 shipping + $3.22 tax = $41.21 total
SSC Catalog Number
SSC-CIW-PLQ-TM-001
Cleveland’s Iron Age: The Industrial Landscape
To understand what The Colonial Iron Works Co. was, you have to understand what Cleveland was. By the late 19th century, Cleveland had become one of the most important iron and steel centers in the United States, ranking fifth nationally in Cuyahoga County’s iron and steel output by 1900. The city’s position on Lake Erie at the convergence of multiple railroad lines made it an ideal meeting point for iron ore arriving from the Lake Superior ranges and coal from the Appalachian fields. This geographic advantage attracted not only the giant integrated mills but also dozens of smaller, specialized iron works that served specific industrial niches.
The Colonial Iron Works Co. was one of these specialized firms. The “CONVEYOR SYSTEMS” designation on its trade mark plaque identifies its product niche: the design and manufacture of material-handling equipment for industrial applications. Conveyor systems were critical infrastructure in the late 19th and early 20th century industrial economy—they moved coal, ore, grain, manufactured parts, and raw materials through mines, mills, factories, and warehouses. A Cleveland-based conveyor manufacturer would have served the heavy industrial corridor that stretched from the Lake Erie waterfront through the Cuyahoga Valley and into the broader Great Lakes manufacturing region.
The anvil-and-hammer trade mark is itself a statement of identity. The anvil is the universal symbol of the blacksmith’s craft and the iron trade—a declaration that this company made things from iron, by hand and by foundry, in the industrial tradition. Placing this symbol at the center of the corporate identity, surrounded by the company name and city, was a standard practice among 19th-century iron works that took pride in their craft heritage even as they scaled up to industrial production volumes. The choice of “Colonial” as a company name may reflect the era’s nostalgia for early American craft traditions—an appeal to heritage and durability that resonated with industrial buyers who wanted equipment built to last.
What We Don’t Know
The honest answer is: almost everything. The Colonial Iron Works Co. does not appear in the Wagner and Griswold Society’s foundry database, which focuses on cookware manufacturers. It does not appear in the Cast Iron Collector’s foundry listing. Systematic searches of Cleveland industrial directories, patent databases, and historical newspaper archives have not yielded founding dates, ownership records, street addresses, or cessation dates for this company. The Encyclopedia of Cleveland History’s comprehensive entries on the city’s iron and steel industry do not mention the firm by name—though they document the broader landscape of dozens of foundries and iron works that operated in the city during the relevant period.
This level of historical obscurity is not unusual for small and mid-sized industrial firms of the era. Cleveland had so many iron works operating between 1870 and 1930 that all but the largest have been effectively lost to the historical record. Corporate records were rarely preserved after dissolution. Local newspaper coverage focused on the major employers. City directories provide listings but not narrative histories. The physical plants have long since been demolished or repurposed. What remains is the iron—the products these companies made, the trade mark plaques they bolted to their equipment, and the occasional patent filing or trade publication advertisement that surfaces in archival research.
SSC documents what is known, acknowledges what is not, and keeps the record open. If additional information about The Colonial Iron Works Co. surfaces—from Cleveland historical societies, from industrial archaeology researchers, from descendants of the company’s owners or employees—this catalog entry will be updated. The plaque is a primary source artifact of a company that the documentary record has forgotten. Its survival is itself an act of preservation.
Collector’s Context & SSC Collection Significance
Industrial identification plaques and trade mark signs occupy a distinct niche in the cast iron collecting universe. They are not cookware, not household objects, and not decorative items in the traditional sense. They are corporate identity artifacts—the physical manifestation of a company’s brand, cast in iron and affixed to the products that bore its name. For collectors focused on Ohio industrial heritage, a well-preserved trade mark plaque from a defunct Cleveland foundry is a primary source document of a company’s existence.
This plaque is the first piece in SSC’s “Cleveland’s Forgotten Foundries” thematic grouping—a deliberate expansion of the collection’s scope beyond cookware and into the broader landscape of Ohio’s industrial iron heritage. The grouping will eventually include pieces from any identified Cleveland-area foundry or iron works that has ceased operations, documented with the same rigor that SSC applies to its cookware catalog: full photography, marking analysis, provenance records, and whatever historical research can be assembled from available sources.
At $29.99 plus shipping and tax, this plaque is a low-cost, high-documentation-value acquisition. Its significance lies entirely in what it represents: a surviving artifact of a Cleveland iron company that the historical record has otherwise erased. Every piece of evidence that such a company existed—and this plaque is, at present, among the only such evidence—has genuine research value for Cleveland industrial historians.
Provenance & Acquisition
This plaque was acquired on February 10, 2026, via eBay from seller group8, under eBay item number 306680033635 (order 26-14198-35772). The listing described the piece as “Antique Colonial Iron Works Cleveland OH Cast Iron Plaque Industrial Sign.” The piece was purchased at $29.99 plus $8.00 USPS Ground Advantage shipping and $3.22 in sales tax, for a total acquisition cost of $41.21.
Physical examination on receipt confirmed the condition as described: structurally sound, fully legible markings, sharp relief on all raised elements, intact mounting holes, and no cracks or damage. The piece has been logged into the SSC collection as a permanent collection specimen under catalog number SSC-CIW-PLQ-TM-001, representing the inaugural piece in the “Cleveland’s Forgotten Foundries” thematic grouping.
Why This Piece Matters
The Colonial Iron Works Co. trade mark plaque matters because it is proof of existence. It is a cast iron document that says: this company was real, it operated in Cleveland, Ohio, it manufactured conveyor systems, and it took enough pride in its work to cast a handsome oval plaque bearing its name, its city, and an anvil-and-hammer trade mark. Without this plaque—and the handful of other surviving specimens that may exist in private hands, antique shops, or industrial collections—The Colonial Iron Works Co. would be functionally invisible to history.
That is what “Cleveland’s Forgotten Foundries” is about. Not the famous names—not U.S. Steel, not Cleveland-Cliffs, not the firms whose corporate histories fill encyclopedia entries and museum archives. The forgotten ones. The small and mid-sized iron works that employed Cleveland workers, served Cleveland industries, and contributed to Cleveland’s identity as one of America’s great manufacturing cities—and that left behind nothing but the iron they made. SSC is collecting that iron. SSC is documenting what it says. And SSC is making sure that the companies behind it are not forgotten entirely.
The iron endures. The markings tell the truth. The story deserves to be told.
Sources & Further Reading
Encyclopedia of Cleveland History (Case Western Reserve University) — “Iron and Steel Industry”: Comprehensive overview of Cleveland’s iron and steel manufacturing landscape from the mid-19th century through the 20th century, documenting the city’s rank as a major national producer.
Teaching Cleveland Digital — “Steel Industry”: Historical context for Ohio’s ironmaking roots and Cleveland’s role in the second industrial revolution.
Cleveland Historical (Case Western Reserve University) — Van Dorn Iron Works entry: Comparative documentation of a Cleveland iron works that survived into the modern era, illustrating the product diversification typical of late 19th-century Cleveland foundries.
Wagner and Griswold Society (WAG Society) — Foundry Database: Comprehensive listing of American cast iron producers; The Colonial Iron Works Co. does not appear, confirming its absence from the cookware-focused collector record.
About Steve’s Seasoned Classics
Steve’s Seasoned Classics is an online museum dedicated to preserving and documenting the heritage of American cast iron cookware, with a focus on Ohio foundry pieces from the 19th and early 20th centuries. The SSC collection features over 60 pieces with detailed provenance, historical research, and photography for each item.
