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Unusual instrument relationship--wrench or turnkey
1Dental Museum, University of Nebraska Medical Center College of Dentistry, Lincoln 68583-0740, USA.
Journal of the History of Dentistry
|March 1, 1996
Summary
An adjustable wrench patented in 1921 bears a striking resemblance to historical dental extraction keys. This suggests a potential cross-pollination of design ideas between general tools and dental instruments.
Area of Science:
- * Dental History
- * Mechanical Engineering
- * Patent Analysis
Background:
- * A unique instrument, resembling a dental extraction key, was discovered in a dental museum.
- * Its identification was facilitated by a patent number inscribed on the device.
Observation:
- * The patent, issued to A. G. H. Andree in May 1921, describes an adjustable wrench.
- * This wrench is designed to grip and rotate objects of varying diameters and can be configured for right or left-side operation.
Findings:
- * A remarkable similarity was observed between the patented wrench and the traditional dental extraction turnkey.
- * Both instruments share a comparable appearance and functional mechanism.
Implications:
- * The study raises the question of whether the design of the adjustable wrench was inspired by the dental turnkey.
- * This highlights potential historical links between general tool innovation and specialized dental instrumentation.