US Patent: 55,389 - Improvement in planing-machines


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US Patent: 55,389

Improvement in planing-machines

Patentee:

John B. Tarr (exact or similar names) - Chicago, IL

USPTO Classifications:

144/243

Tool Categories:

woodworking machines : cutter head machines : wood planers

Assignees:

None

Manufacturer:

S. A. Woods Machine Co. - Boston, MA

Witnesses:

Unknown

Patent Dates:
Granted:	Jun. 05, 1866

Patent Pictures:

USPTO (New site tip)
Google Patents
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Vintage Machinery entry for S. A. Woods Machine Co.

Description:

This important patent is for a side-head chip breaker. It prevents splintering of the side of the board while being matched. It is an improvement to patent 20,527. Unfortunately for inventor John B. Tarr, this patent's claims were considerably narrower than they could have been, which left room for manufacturers to put chip-breakers on their planer side-heads without having to pay any licensing fees. This issue is discussed in Charles Tompkins' book, "History of the Planing Mill".