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US Patent: 271,043
Cast Jointed Tool
Improvements in Methods of Manufacturing Cast Jointed Tools
John H. Davis - Covington, KY

USPTO Classifications:
76/101.1, 76/114, 81/416

Tool Categories:

John H. Davis - Covington, KY
Henry Adams - Covington, KY

Not known to have been produced

James H. Layman
Emmett N. Parker
Saml. S. Carpenter
John C. Frohliger

Patent Dates:
Applied: Oct. 23, 1882
Granted: Jan. 23, 1883

Patent Pictures: [ 1 | 2 ]
John H. Davis patent January 23, 1883
USPTO pdf tiff
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A box joint is formed by casting one half of the tool around a bulging center core to form a hole through which the other member can be slid, and afterwards flattening the bulges to form a joint. A hole drilled through the two members and a rivet to secure the members complete the joint.

The specifications disclaim any application to wrenches or similar tools where this principle was already patented.

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