ORIGINAL! 1868 STEPHEN KETCHUM WORCESTER MA. PATENT STEAM MACHINE PROTOTYPE CDV PHOTO
1868 STEPHEN KETCHUM WORCESTER MA. PATENT STEAM MACHINE PROTOTYPE. CDV PHOTO.
MUSEUM-GRADE AMERICAN INDUSTRIAL REVOLUTION HISTORY! AN INCREDIBLY RARE, ONE-OF-A-KIND HISTORICAL DISCOVERY UNCOVERING AN ORIGINAL PRE-1870 INDUSTRIAL MACHINE PROTOTYPE BY RENOWNED MASSACHUSETTS MECHANICAL INVENTOR STEPHEN C. KETCHUM (1818–1898).
THIS AUTHENTIC LATE 1860S PATENT CARD MEASURES EXACTLY 2 9/16" X 3 15/16", MAKING IT A HIGHLY COLLECTIBLE CARTE DE VISITE (CDV) / FORMAT. IT CAPTURES AN EXTRAORDINARY, HIGHLY ADVANCED DUAL-COLUMN HIGH-PRESSURE STEAM / LIQUID HEATING APPARATUS MANUFACTURED AT THE HISTORIC KETCHUM STEEL WORKS IN WORCESTER, MASSACHUSETTS. THE CYLINDRICAL CAST-IRON TOWERS FEATURE MAJESTIC VICTORIAN SCROLLWORK MOLDED INTO THE STRUCTURE—A MARVEL OF THE ERA THAT BALANCED RAW UTILITY WITH ARTISTIC INDUSTRIAL DESIGN. THE FRONT CAST PLAQUE IS LEGIBLE AND BEARS THE FORMAL PATENT DESIGNATION DATE: FEB. 25, 1868.
THE BACK OF THIS CARD OFFERS AN UNPARALLELED TREASURE FOR PATENT COLLECTORS. IT FEATURES A COMPLETELY UNIQUE, ORIGINAL HAND-DRAWN WORKING BLUEPRINT SYSTEM LAYOUT SKETCH EXECUTED DIRECTLY BY KETCHUM OR HIS LEAD FOUNDRY ENGINEER! THE DRAWING SYSTEMATICALLY DIAGRAMS HOW THE INTERNAL VALVES AND RECIPROCATING ASSEMBLIES WOULD ALIGN WITH HORIZONTAL OVERHEAD LINE SHAFTS, PULLY COUPLINGS, AND CONDUIT RUNS ON THE FACTORY FLOOR, COMPLETE WITH RAW WORKSHOP MEASUREMENT NOTATIONS AT THE BASE.
STEPHEN C. KETCHUM’S MOTION PATENTS FAMOUSLY POWERED MAJOR 19TH-CENTURY MECHANICAL REVOLUTIONS, INCLUDING EARLY WILSON SEWING MACHINES. THIS CARD IS NOT JUST AN ANTIQUE PICTURE; IT IS A PRIMARY HISTORIC ARTIFACT OF HIS INFRASTRUCTURE CONCEPTS. A CROWNING PLACEMENT PIECE FOR INDUSTRIAL EPHEMERA ARCHIVES, HISTORICAL SOCIETIES, AND HIGH-END TECHNOLOGY HISTORY COLLECTIONS.
CONDITION: EXCEPTIONAL MUSEUM-QUALITY VINTAGE CONDITION. THE PHOTOGRAPHIC CONTRAST OF THE APPARATUS IS CRUNCHY AND CLEAR, AND THE SKETCH ON THE BACK HAS PERFECT TONAL INTEGRITY WITHOUT CRACKING OR MATERIAL DEGRADATION.
DIMENSIONS: 2 9/16" X 3 15/16".
(please see pictures).
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