Lewis, Henry J. patent
Region: United States Period: 1850–1890 Tag: Lewis Stereoscope type: Tabletop » Single-view » Graphoscope
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Henry J. Lewis patented a design that was a variant of the English Graphoscope. His patent was assigned to E. & H. T. Anthony and Company.
The device has a large lens for conventional photographs and two stereo lenses. All three lenses are mounted in a single panel, and the large lens cannot be folded away, as is often the case in the English Graphoscope. The device folds up completely into a relatively compact box. The baseboard is mounted on a movable system of struts that allows the viewer to be directed. In a later version, the struts were replaced by a simpler mechanism.
Related items:Anthony, E. & H.T. Graphoscope Lewis family
Specifications:
Introduction:
1875
Designer:
Henry J. Lewis
Maker:
Henry J. Lewis
Construction:
Wood
Medium:
Paper
Format:
8.5 x 17
Lens:
Convex
Lens focus:
Yes
Inter-ocular adjustment:
No
Patents and registrations:
Number: 165241
Stereoscope
Filing: 06-07-1875, Applicant(s): Henry J. Lewis. via: worldwide.espacenet.com
Further reading:
- Wing, Paul. Stereoscopes: The first one hundred years (1996) , pp. 133-134
© Virtual Stereoscopic Museum
Published: 19-04-2026 Last modified: 10-05-2026