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US Patent: 631,598
Harrow
Patentee:
Marquis J. Todd (exact or similar names) - Buffalo, Erie County, NY

USPTO Classifications:
172/158, 172/503, 172/555, 172/567, 172/572

Tool Categories:
agricultural : harrows

Assignees:
None

Manufacturer:
Pitts Agricultural Works - Buffalo, Erie County, NY

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 12, 1899
Granted: Aug. 22, 1899

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Buffalo Pitts Co.
Description:
Abstract:

he primary objects of the invention are to automatically raise the central disk when the disk gangs between which it is located are thrown out of working position, to force and hold the disk down to its work when the gangs are thrown into working position, and to allow such disk to yield upon contacting with stones or other obstructions. A further object is to maintain the central disk in line between the two gangs of disks, thereby preventing it from working too near either gang and avoid strain on its standard, and a further object is to effect the operation of the central disk-that is, throwing it into and out of engagement with the soil by the operation of the gang-adjusting mechanism.

Claim:

A harrow having gangs, a disk centrally of said gangs and means for automatically lowering and raising the disk as the harrow is thrown into and out of operation.

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