Vintage Antique DUFF PGH 1x6 Cast Iron Screw Jack Railroad/Barn/House Tool For Sale

• Brand: Duff Manufacturing Co.

• Type: Mechanical Screw Jack / House Jack / Railroad Jack

• Material: Heavy Cast Iron / Steel

• Markings: DUFF, PGH, 1X6

• Color / Finish: Natural aged patina with remnants of original red industrial finish

• Country/Region of Manufacture: United States (Pittsburgh, PA)

Up for sale is an authentic antique/vintage mechanical screw jack manufactured by the Duff Manufacturing Company of Pittsburgh, Pennsylvania.

This is the desirable and compact 1X6 model (1-inch diameter screw with a 6-inch travel). It features heavy cast-iron construction, an integrated side carry handle, a four-hole turning collar for use with a turning bar/rod, and a free-swiveling top support cap.

• Mechanical: Fully functional and in excellent working order. The heavy screw turns smoothly and freely up and down without binding or seizing. The top cap rotates cleanly as intended.

• Structural: Completely solid with no cracks, breaks, chips, or weld repairs.

• Cosmetic / Patina: Features an authentic, undisturbed vintage surface with a rich, dark aged iron patina and honest wear consistent with age and shop use. Remnants of the original red factory finish remain visible across the neck and handle. Embossed lettering (DUFF, PGH, and 1X6) is sharp, distinct, and highly legible.

• Features & Uses:

• Heavy-duty cast-iron bell-shaped base provides stability and substantial load support.

• Hollow bottom base typical of original vintage cast tooling.

• Ideal for vintage automotive/tractor tool collections, antique railroadiana/tool collectors, industrial loft decor, or practical mechanical shop use.