US Patent: 337,531 - Calipers and Dividers


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US Patent: 337,531

Calipers and Dividers

Patentee:

Joshua Stevens (exact or similar names) - Chicopee Falls, MA

USPTO Classifications:

33/27.033

Tool Categories:

layout tools : compasses : dividers

layout tools : calipers

Assignees:

None

Manufacturer:

J. Stevens Arms & Tool Co. - Chicopee Falls, MA

Witnesses:

George Leonard

Henry Woodward

Patent Dates:
Applied:	Jul. 27, 1885
Granted:	Mar. 09, 1886

Patent Pictures: [ 1 | 2 | 3 | 4 | 5 | 6 ]

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Description:

This patent is for the curved springs and the sockets that they fit into. (Image #6)

These Spring calipers were introduced in 1888 and incorporated the features from patents, 337,531, 351474, 377,867 and 377868. The Square leg style was offered under the "IDEAL" label and the flat leg version under the "Leader" label.