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US Patent: 87,421
Improvement in Plow-Clevises
Improvement in Clevises for Plows and Other Agricultural Implements
Patentee:
E. G. Matthews (exact or similar names) - Newton, MA

USPTO Classifications:
278/96.2

Tool Categories:
agricultural : clevises

Assignees:
F. F, Holbrook - Boston, MA

Manufacturer:
F. F. Holbrook & Small. - Boston, MA

Witnesses:
D. L. Miller
Thos. H. Dodge

Patent Dates:
Granted: Mar. 02, 1869

Patent Pictures: [ 1 | 2 | 3 ]
Patent 87,421 -- edited image
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Description:
The design is to facilitate pulling a plow or other implement with three horses abreast, and to the left of the line of draft. The components include an off-center cross-clevis and a draft rod connecting the outer end of the cross-clevis to the plow beam. One or both of the side plates include a flange to support the draft-wheel. The patent includes a spring-pin.

Holbrook was marketing plows incorporating this clevis at Boston.

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