12976
Patent Summary
An image of the patent summary for number 12976.
Name/Title
12976Entry/Object ID
2025.3.199Tags
1800s, british, shears, sheep, birkheadDescription
12,976. Birkhead, T. Oct. 12. Shears, sheep. Means are provided for regulating the power of the spring, especially in double-bow shears, to suit the strength of the shearer's hand. A screw stud A is placed below the junction B of the two parts of the spring for the purpose of altering their divergence. When applied to single-bows a spring somewhat like the centre portion of the double bows is attached to the side of the single bow, and adjusted by the stud.Cataloged By
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Patent Summaries