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US Patent: 295,962
Corkscrew
Patentee:
Alois J. Walter - Philadelphia, PA

USPTO Classifications:
81/3.29

Tool Categories:
household tools : cork extractors : self and partial cork pullers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. F. Kircher
A. P. Grant
John A. Wiedersheim

Patent Dates:
Applied: Dec. 20, 1883
Granted: Apr. 01, 1884

Patent Pictures:
Alois J. Walter patent April 1, 1884
USPTO pdf tiff
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Description:
The shank of the screw runs through a tube extending from a frame. A compression spring surrounds the tube and runs from the frame to the handle. The specifications claim the spring is strong enough to extract the cork as the screw is driven.

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