By - Schuette Mfg.

Knowles Series H Spring Tooth Harrows 3-Point Hitch Pull Type

This is an all new high quality, ruggedly designed harrow that will give many years of satisfactory service.  It can be converted from a three-point hydraulic lift type to a trailing or a pull type machine by removing a tee handle pin.  With this arrangement, two different requirements for spring tooth harrows can be met with a single model.

H 6016 ft.18Two – 3 ft.430
H 9019 ft.27Three – 3 ft.625
H 120112 ft.36Three – 4 ft.740
H 160116 ft.48Four – 4 ft.994


Rectangular Tooth Bars – 23″ Spacing
Adjustable Tooth Clamps
Replaceable Runner Shoes
Depth Control Levers
Adjustable Hitch
Heat Treated Teeth


Rugged draw bar and lifting frame do not restrict flexibility of harrow.
Yoke pivots on 1″ diameter bolts.
Teeth are mounted on heavy 1″ x 2″ steel tubing.
Teeth are punched for standard shovels.
By - Schuette Mfg.

Knowles Series SW 720 Wheel Mounted Spring Tooth Harrow

Sections raise hydraulically for easy trash removal and backing up. Sections are easily moved to 90 degrees for transport. Heavy duty tubular frame is reinforced at all stress points. Heavy wear shoes are provided for longer life. Heat treated spring teeth resist wear and breakage. Size of tooth – 1-3/4″ x 5/16″ x 39″. Teeth require 1/2″ mounting bolts. 3/8″ holes provided in teeth for replacement points on 2″ centers. Sections are joined together with 1″ diameter bolts. Jackstand for easier hitching is standard equipment. 15″ wheels with large flotation type tires are standard. A rugged adjustable hitch is provided to fit tractor draw bar. 23″ tooth bar spacing.

The new KNOWLES wheel-mounted harrow is designed for fast and efficient seedbed preparation.

A heavy structural frame and hydraulic lift give fast, convenient transport and easy field operation.  Available in three standard sizes.

7201616′12′ 6″Four – 4 ft.482189#
7202020′12′ 6″Two – 4 ft.Four – 3 ft.602550#
7202525′12′ 6″Six – 4 ft.722762#
By - Schuette Mfg.

Knowles 30′, 34′ and 38′ Wheel Mounted Spring Tooth Harrows

2″ x 2″ Tooth Cross Bars. Size of Tooth-1-3/4″ x 5/16″ x 39″. Heavy Duty Tubular Tongue and Frame. Single Wing Support Tire on Each Wing. Variable Length Tongue insert for Each Width. Dual 12.5L x 15 8-Ply Tires for Added Flotation. Wing Sections are Easily Moved to 90 degrees for Transport. Depth Control Levers. 23″ Tooth Bar Spacing. Center Mounted Jack Stand. Heavy Duty Replaceable Front and Rear Wear Shoes. Heat Treated Teeth with Holes for Replacement Points.


7203030′16′ 8″Seven – 4 ft.884200#
7203434′16′ 8″Four – 3 ft.
Five – 4 ft.
7203838′16′ 8″Nine – 4 ft.1124760#


Lifting Controlled with Two Hydraulic Cylinders for Easy Trash Removal and Transport (Hydraulic Cylinders Not Included-Hydraulic Cylinder Kit Available Upon Request)