68 WISEMAN-DOWNS CO., INC. - 34 E. PRATT ST. - BALTIMORE, MD 
JOHN DEERE MODEL L. C. TRACTOR DISK HARROW 
STRONGER AND BETTER THAN EVER 
John Deere Model L Disk Harrow 
Now, the John Deere Model L Tractor Disk Harrow is 
stronger and better than ever. 
In addition to all the good qualities embodied in the 
original Model L, new and important improvements have 
been made which make more effective the exclusive work¬ 
ing features that have long identified the Model L as an 
outstanding favorite. 
A wider and heavier frame; angle iron main frame braces 
instead of flat bars; pivot connection between the main 
frame and gangs; new pivoted yoke and draw-bar guide; 
increased carbon in steel wearing parts; heat-treated disk 
blades—these are some of the improvements which com¬ 
bine to make a stronger and heavier harrow that does bet¬ 
ter work and lasts longer. 
Heat-Treated Alloy Steel Disk Blades 
The disk blades now furnished on all John Deere Disk 
Harrows are made of long-wearing alloy steel which is used 
extensively in the manufacture of automobile parts that 
are under heavy strain. The blades are carefully heat- 
treated after they are formed. This gives an even stronger 
blade than the high carbon steel disks which have hereto¬ 
fore been furnished on John Deere Harrows. 
The heat-treated blade is unusually close grained, which 
combines hardness with toughness. Thus the blade holds 
its edge, stays sharp and lasts longer, especially when 
working in tough, hard or stony soil. 
All of the superior points of construction which have 
contributed to the remarkable success and efficiency of the 
Model L have been retained—the convenient angling cranks, 
automatic yielding lock coupling, aligning device, and the 
flexibility of the harrow itself—all of which make good 
work certain under varying field conditions. 
Prices on Model L Tractor Disk Harrows 
No. LC616 24 16" Discs, cuts 6 feet. $116.75 
No. LC618 24 18" Discs, cuts 6 feet.126.50 
No. LC716 28 16" Discs, cuts 7 feet.125.00 
No. LC718 28 18" Discs, cuts 7 feet. ... 135.75 
JOHN DEERE MODEL B DISK HARROW 
John Deere Model B Harrow 
If every field were as smooth as a board floor, flexibility 
would be of no advantage in a disk harrow. But the truth 
is there is no field condition in which a flexible harrow 
will not do better work than a rigid one. A disk harrow 
must be flexible to do the best work. 
Independent action of the gangs is largely responsible 
for the flexibility of the Model B. This construction is of 
great value because it allows one part of the harrow to 
pass over an obstruction in the field without interfering 
with the rest of the machine. A rigid harrow, under the 
same conditions, is likely to leave some of the land un¬ 
cultivated. 
Separate angling levers enable the operator to give the 
gangs the proper angle with relation to each other when 
working on hillsides, so the harrow does not crowd in any 
direction. 
When overlapping, with one gang running in hard 
ground and the other gang in soft ground, the single-lever 
harrow tends to crowd towards the soft ground, due to the 
greater resistance offered by the hard ground. This fault 
is readily overcome with the Model B by giving the gang 
working in soft ground slightly more angle. 
Spring Pressure and Third Lever Have Many Advantages 
The control of the Model B, so that it will penetrate 
evenly its entire width in any kind of ground, is made 
extremely simple and positive by the spring-pressure third 
lever feature. 
The Model B has a pivoted yoke through which the draw¬ 
bars pass. This yoke is controlled in its up-and-down 
movements by a third lever and powerful pressure spring. 
When this third spring-pressure lever is pulled back, the 
inner ends of th.e gang are forced down to work in depres¬ 
sions and dead furrows, or to give extra pressure in hard 
ground. 
Prices on Model B Disk Harrows 
No. BF416— 8 16" Discs, cuts 4 ft. 2-H.E. and Pole. . $50.00 
No. BF418— 8 18" Discs, cuts 4 ft. 2-H.E. and Pole. . . 53.00 
No. BF516—10 16" Discs, cuts 5 ft. 2-H.E. and Pole . . 53.25 
No. BF518—10 18" Discs, cuts 5 ft. 2-H.E. and Pole . . 57.25 
No. 17—Forecarriage . 11.25 
Best by Every Test 
