US280751A - Harrow - Google Patents

Description

817 P. LUX.

(No Model.)

HARROW. Y

Patented July 3, 1883.v

I WITNFSTSES: I @Mwwg.

ATTQRNEYS UNITED STATES PATENT OFFIc JOHN H. LUX AND PHILIP LUX, OF EARLVILIIE, IO\VA.

HARROW.

SPECIFICATION forming part of Letters Patent No. 280,751, dated July 3, 1 883.

Application filed Aprll14, 1833. (No model.)

To aZZ whom, it may concern PHILIP LUX, of Earlville, in the county of Delaware and State of Iowa, have invented certain new and useful Improvements in Harrows; and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to-the accompanying drawings, which form a part of this specification, and in which Figure 1 is a perspective view of our improved harrow. Fig. 2 is a perspective detail view of one of the teeth, with a portion of the harrow-frame; and Fig. 3 is a longitudinal sectional view through a portion of the harrowframe, showing the attachment of the movable teeth.

Similar letters of reference indicate corresponding parts in all the figures.

' Our invention has relation to harrows with pivoted teeth of that class which are adapted for use either as a straight-tooth or smoothing harrow, according to the direction of the draft; and it consists in the detailed construction and arrangement of the pivoted teeth, as hereinafter more*fully described and claimed.

We prefer to make our improved harrow in three sections, as shown in Fig. 1 of the drawings, which are connected at one end to the drag-bar A, to the middle of which the doubletree 13 is secured; but a greater or smaller number of sections may be used, the several sections being constructed alike and each consisting of a series of parallel bars arranged in pairs, as shown at O O, leaving a narrow space between each pair of bars for the insertion of the pivoted teeth D. These double bars 0 are arranged parallel to each other and connected by parallel cross-bars E and diagonal braces F, as shown in Fig. 1, thus making a harrowsection of square or rectangular shape. The teeth shown at D are made of steel, by preference, about seven inches long, three-eighths of an inch thick, and two inches wide at the top, tapering down to the point E from the point marked F. The upper square part or head, M, of the tooth, which is inserted into the narrow space or slot between the bars 0 O, has

two apertures, G and H, one of which, G, is only large enough for the insertion of the bolt I, upon which the tooth is hung or pivoted, while the other aperture, H, is considerably larger, so as to allow the tooth a limited play upon the bolt J, which is inserted through said aperture. When the harrow is used as a straight-tooth or scouring harrow, the draft is applied to that end of the tooth-bars which is marked K in the drawings, so that as the harrow is drawn over the ground the front edge or straight side of the teeth will assume a position at right angles to the bars 0, while, if the harrow is to be used as a smoothing-harrow, the draft is applied to the opposite end, L, of the tooth-bars, by which the teeth will be tilted, as indicated in dotted lines.

The frame, being made wholly of wroughtiron, combines lightness with strength in an eminent degree, and by simply changing the hitch to opposite ends it makes either a straight-tooth or smoothing harrow, as may be desired, without changing any of the parts. Each tooth being secured to the tooth-bar or beam by two bolts or rivets, it cannot possibly get out of place or become lost, and the teeth, being made of steel, will scour in any soil and very seldom require sharpening, which can be done without removing the bar or beam by simply unbolting the beam from the harrow.

Ve are aware that it is not new to construct a harrow with its teeth pivoted between the tooth-bars, so as to adapt them to be held either in a straight or tilted position, according to the line of draft; nor do we claim such construction, broadly; but the novelty of our invention resides in the detailed construction and arrangement of the teeth with their two apertures, G H, of unequal size, but in a line with each other and pivoted between pairs of adjacent bars, without the use of clamps, guideblocks, or stops inserted between said bars, save the bolts I J, which operate to connect the bars in pairs, so that our improved harrow consists of few parts simply put together.

What weclaim, and desire to secure by Letters Patent of the United States, is therefore- In a harrow of the described class, the combination of the fiat-tooth bars 0, set on edge and connected in pairs by the bolts I and J, our own we have hereunto affixed our signaand teeth 1), havlng a square head, M, fitting tures in presence of two Witnesses.

between and a ainst the adjacent sides of the r tooth-bars, andi provided with the apertures G 3 g 5 and H, of unequal size, but in a line with each J J other, substantially as and for the purpose \Vitnesses: herein shown and specified. J. W. DIETRICK,

In testimony that we claim the foregoing as EDWARD \VAGNER.

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