Simplex Screw Jack Value Guide

- Period
- 1910-1930
- Origin
- United States
- Materials
- Cast iron, steel
- Category
- Simplex screw jack
The Simplex Screw Jack is a cornerstone of American industrial history, manufactured by Templeton, Kenly & Co. during the early 20th-century railroad expansion. These heavy-duty cast iron tools are highly collectible for their rugged '4-way head' design and their historical role in lifting heavy machinery and rail cars.
What Is Simplex Screw Jack Worth?
The typical price range for Simplex Screw Jack is $95 - $105 based on recent sales. However, values can vary depending on the item's condition, rarity, and other factors such as:
- Mechanical functionality, specifically the smoothness of the screw and the condition of the ball bearings.
- The presence of original paint or a desirable natural patina without excessive deep-pitting rust.
- Legibility of the embossed manufacturer markings and model numbers on the housing.
- Completeness of the unit, including the integrated handle which is often damaged or missing on industrial pieces.
How to Identify Simplex Screw Jack?
- Look for the 'Simplex' brand name and 'Templeton, Kenly & Co.' embossed directly into the cast iron body.
- Verify the presence of the integrated handle and the characteristic ball bearing head assembly.
- Check for the specific '4-way head' design which features four distinct notches for versatile load engagement.
- Confirm the construction materials are a combination of heavy cast iron for the base and steel for the screw mechanism.
History of Simplex Screw Jack
Manufactured by Templeton, Kenly & Co., the Simplex brand became synonymous with reliability in the early 20th century. These jacks were essential tools for the expansion of the American railroad system and for lifting heavy machinery in industrial settings. The '4-way head' design allowed for versatile engagement with various loads.
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